==================================================================
BUG: KASAN: slab-use-after-free in hci_sock_get_cookie+0x42/0x50 net/bluetooth/hci_sock.c:96
Read of size 4 at addr ffff888057c0d5b8 by task syz.2.1022/8595

CPU: 0 UID: 0 PID: 8595 Comm: syz.2.1022 Not tainted 6.13.0-rc7-syzkaller-00209-g9528d418de4d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 hci_sock_get_cookie+0x42/0x50 net/bluetooth/hci_sock.c:96
 mgmt_cmd_status+0x229/0x520 net/bluetooth/mgmt_util.c:149
 cmd_status_rsp net/bluetooth/mgmt.c:1458 [inline]
 cmd_complete_rsp+0x165/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9584
 hci_dev_close_sync+0xcbb/0x11a0 net/bluetooth/hci_sync.c:5209
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:482
 hci_dev_close+0x183/0x1e0 net/bluetooth/hci_core.c:507
 hci_sock_ioctl+0x2b5/0x7d0 net/bluetooth/hci_sock.c:1128
 sock_do_ioctl+0x119/0x280 net/socket.c:1209
 sock_ioctl+0x228/0x6c0 net/socket.c:1328
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f034dd85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f034ebe5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f034df75fa0 RCX: 00007f034dd85d29
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000004
RBP: 00007f034de01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f034df75fa0 R15: 00007ffc75ec7218
 </TASK>

Allocated by task 6867:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4298 [inline]
 __kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2168
 sk_alloc+0x36/0xb90 net/core/sock.c:2221
 bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
 hci_sock_create+0xbc/0x1a0 net/bluetooth/hci_sock.c:2202
 bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x338/0x8d0 net/socket.c:1558
 sock_create net/socket.c:1616 [inline]
 __sys_socket_create net/socket.c:1653 [inline]
 __sys_socket+0x14f/0x260 net/socket.c:1700
 __do_sys_socket net/socket.c:1714 [inline]
 __se_sys_socket net/socket.c:1712 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1712
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8604:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4613 [inline]
 kfree+0x14f/0x4b0 mm/slub.c:4761
 sk_prot_free net/core/sock.c:2204 [inline]
 __sk_destruct+0x5eb/0x720 net/core/sock.c:2296
 sk_destruct+0xc2/0xf0 net/core/sock.c:2311
 __sk_free+0xf4/0x3e0 net/core/sock.c:2322
 sk_free+0x6a/0x90 net/core/sock.c:2333
 sock_put include/net/sock.h:1910 [inline]
 mgmt_pending_free+0xc0/0xf0 net/bluetooth/mgmt_util.c:307
 cmd_status_rsp net/bluetooth/mgmt.c:1459 [inline]
 cmd_complete_rsp+0x16d/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x145/0x300 net/bluetooth/mgmt.c:9517
 hci_sock_bind+0xb57/0x14d0 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind_socket net/socket.c:1819 [inline]
 __sys_bind+0x216/0x260 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x72/0xb0 net/socket.c:1861
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888057c0d000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1464 bytes inside of
 freed 2048-byte region [ffff888057c0d000, ffff888057c0d800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888057c0f000 pfn:0x57c08
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
raw: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
head: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea00015f0201 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5829, tgid 5829 (syz-executor), ts 99188561302, free_ts 32585661858
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2589 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2642
 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_node_track_caller_noprof+0x2f1/0x510 mm/slub.c:4317
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:609
 pskb_expand_head+0x243/0x1240 net/core/skbuff.c:2275
 netlink_trim+0x1ef/0x250 net/netlink/af_netlink.c:1303
 netlink_broadcast_filtered+0xc7/0xef0 net/netlink/af_netlink.c:1509
 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline]
 nlmsg_multicast include/net/netlink.h:1147 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2585
 rtnl_notify net/core/rtnetlink.c:943 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4376 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4392 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4379 [inline]
 rtmsg_ifinfo+0x174/0x1a0 net/core/rtnetlink.c:4398
 __dev_notify_flags+0x24e/0x2e0 net/core/dev.c:9003
 dev_change_flags+0x10c/0x160 net/core/dev.c:9045
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
 free_contig_range+0x133/0x3f0 mm/page_alloc.c:6635
 destroy_args+0x802/0xa50 mm/debug_vm_pgtable.c:1017
 debug_vm_pgtable+0x168e/0x31a0 mm/debug_vm_pgtable.c:1397
 do_one_initcall+0x12b/0x700 init/main.c:1266
 do_initcall_level init/main.c:1328 [inline]
 do_initcalls init/main.c:1344 [inline]
 do_basic_setup init/main.c:1363 [inline]
 kernel_init_freeable+0x5c7/0x900 init/main.c:1577
 kernel_init+0x1c/0x2b0 init/main.c:1466
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888057c0d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888057c0d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff888057c0d600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in sk_filter_trim_cap+0x9bd/0xac0 net/core/filter.c:156
Read of size 8 at addr ffff888057c0d178 by task syz.2.1022/8595

CPU: 1 UID: 0 PID: 8595 Comm: syz.2.1022 Tainted: G    B              6.13.0-rc7-syzkaller-00209-g9528d418de4d #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 sk_filter_trim_cap+0x9bd/0xac0 net/core/filter.c:156
 sk_filter include/linux/filter.h:1062 [inline]
 sock_queue_rcv_skb_reason+0x30/0xe0 net/core/sock.c:520
 sock_queue_rcv_skb include/net/sock.h:2399 [inline]
 mgmt_cmd_status+0x304/0x520 net/bluetooth/mgmt_util.c:156
 cmd_status_rsp net/bluetooth/mgmt.c:1458 [inline]
 cmd_complete_rsp+0x165/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9584
 hci_dev_close_sync+0xcbb/0x11a0 net/bluetooth/hci_sync.c:5209
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:482
 hci_dev_close+0x183/0x1e0 net/bluetooth/hci_core.c:507
 hci_sock_ioctl+0x2b5/0x7d0 net/bluetooth/hci_sock.c:1128
 sock_do_ioctl+0x119/0x280 net/socket.c:1209
 sock_ioctl+0x228/0x6c0 net/socket.c:1328
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f034dd85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f034ebe5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f034df75fa0 RCX: 00007f034dd85d29
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000004
RBP: 00007f034de01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f034df75fa0 R15: 00007ffc75ec7218
 </TASK>

Allocated by task 6867:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4298 [inline]
 __kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2168
 sk_alloc+0x36/0xb90 net/core/sock.c:2221
 bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
 hci_sock_create+0xbc/0x1a0 net/bluetooth/hci_sock.c:2202
 bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x338/0x8d0 net/socket.c:1558
 sock_create net/socket.c:1616 [inline]
 __sys_socket_create net/socket.c:1653 [inline]
 __sys_socket+0x14f/0x260 net/socket.c:1700
 __do_sys_socket net/socket.c:1714 [inline]
 __se_sys_socket net/socket.c:1712 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1712
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8604:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4613 [inline]
 kfree+0x14f/0x4b0 mm/slub.c:4761
 sk_prot_free net/core/sock.c:2204 [inline]
 __sk_destruct+0x5eb/0x720 net/core/sock.c:2296
 sk_destruct+0xc2/0xf0 net/core/sock.c:2311
 __sk_free+0xf4/0x3e0 net/core/sock.c:2322
 sk_free+0x6a/0x90 net/core/sock.c:2333
 sock_put include/net/sock.h:1910 [inline]
 mgmt_pending_free+0xc0/0xf0 net/bluetooth/mgmt_util.c:307
 cmd_status_rsp net/bluetooth/mgmt.c:1459 [inline]
 cmd_complete_rsp+0x16d/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x145/0x300 net/bluetooth/mgmt.c:9517
 hci_sock_bind+0xb57/0x14d0 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind_socket net/socket.c:1819 [inline]
 __sys_bind+0x216/0x260 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x72/0xb0 net/socket.c:1861
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888057c0d000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 376 bytes inside of
 freed 2048-byte region [ffff888057c0d000, ffff888057c0d800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888057c0f000 pfn:0x57c08
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
raw: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
head: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea00015f0201 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5829, tgid 5829 (syz-executor), ts 99188561302, free_ts 32585661858
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2589 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2642
 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_node_track_caller_noprof+0x2f1/0x510 mm/slub.c:4317
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:609
 pskb_expand_head+0x243/0x1240 net/core/skbuff.c:2275
 netlink_trim+0x1ef/0x250 net/netlink/af_netlink.c:1303
 netlink_broadcast_filtered+0xc7/0xef0 net/netlink/af_netlink.c:1509
 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline]
 nlmsg_multicast include/net/netlink.h:1147 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2585
 rtnl_notify net/core/rtnetlink.c:943 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4376 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4392 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4379 [inline]
 rtmsg_ifinfo+0x174/0x1a0 net/core/rtnetlink.c:4398
 __dev_notify_flags+0x24e/0x2e0 net/core/dev.c:9003
 dev_change_flags+0x10c/0x160 net/core/dev.c:9045
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
 free_contig_range+0x133/0x3f0 mm/page_alloc.c:6635
 destroy_args+0x802/0xa50 mm/debug_vm_pgtable.c:1017
 debug_vm_pgtable+0x168e/0x31a0 mm/debug_vm_pgtable.c:1397
 do_one_initcall+0x12b/0x700 init/main.c:1266
 do_initcall_level init/main.c:1328 [inline]
 do_initcalls init/main.c:1344 [inline]
 do_basic_setup init/main.c:1363 [inline]
 kernel_init_freeable+0x5c7/0x900 init/main.c:1577
 kernel_init+0x1c/0x2b0 init/main.c:1466
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888057c0d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888057c0d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff888057c0d180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: slab-use-after-free in atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
BUG: KASAN: slab-use-after-free in __sock_queue_rcv_skb+0x3c/0xa80 net/core/sock.c:484
Read of size 4 at addr ffff888057c0d140 by task syz.2.1022/8595

CPU: 0 UID: 0 PID: 8595 Comm: syz.2.1022 Tainted: G    B              6.13.0-rc7-syzkaller-00209-g9528d418de4d #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 __sock_queue_rcv_skb+0x3c/0xa80 net/core/sock.c:484
 sock_queue_rcv_skb_reason+0xa2/0xe0 net/core/sock.c:525
 sock_queue_rcv_skb include/net/sock.h:2399 [inline]
 mgmt_cmd_status+0x304/0x520 net/bluetooth/mgmt_util.c:156
 cmd_status_rsp net/bluetooth/mgmt.c:1458 [inline]
 cmd_complete_rsp+0x165/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9584
 hci_dev_close_sync+0xcbb/0x11a0 net/bluetooth/hci_sync.c:5209
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:482
 hci_dev_close+0x183/0x1e0 net/bluetooth/hci_core.c:507
 hci_sock_ioctl+0x2b5/0x7d0 net/bluetooth/hci_sock.c:1128
 sock_do_ioctl+0x119/0x280 net/socket.c:1209
 sock_ioctl+0x228/0x6c0 net/socket.c:1328
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f034dd85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f034ebe5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f034df75fa0 RCX: 00007f034dd85d29
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000004
RBP: 00007f034de01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f034df75fa0 R15: 00007ffc75ec7218
 </TASK>

Allocated by task 6867:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4298 [inline]
 __kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2168
 sk_alloc+0x36/0xb90 net/core/sock.c:2221
 bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
 hci_sock_create+0xbc/0x1a0 net/bluetooth/hci_sock.c:2202
 bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x338/0x8d0 net/socket.c:1558
 sock_create net/socket.c:1616 [inline]
 __sys_socket_create net/socket.c:1653 [inline]
 __sys_socket+0x14f/0x260 net/socket.c:1700
 __do_sys_socket net/socket.c:1714 [inline]
 __se_sys_socket net/socket.c:1712 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1712
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8604:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4613 [inline]
 kfree+0x14f/0x4b0 mm/slub.c:4761
 sk_prot_free net/core/sock.c:2204 [inline]
 __sk_destruct+0x5eb/0x720 net/core/sock.c:2296
 sk_destruct+0xc2/0xf0 net/core/sock.c:2311
 __sk_free+0xf4/0x3e0 net/core/sock.c:2322
 sk_free+0x6a/0x90 net/core/sock.c:2333
 sock_put include/net/sock.h:1910 [inline]
 mgmt_pending_free+0xc0/0xf0 net/bluetooth/mgmt_util.c:307
 cmd_status_rsp net/bluetooth/mgmt.c:1459 [inline]
 cmd_complete_rsp+0x16d/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x145/0x300 net/bluetooth/mgmt.c:9517
 hci_sock_bind+0xb57/0x14d0 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind_socket net/socket.c:1819 [inline]
 __sys_bind+0x216/0x260 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x72/0xb0 net/socket.c:1861
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888057c0d000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 320 bytes inside of
 freed 2048-byte region [ffff888057c0d000, ffff888057c0d800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888057c0f000 pfn:0x57c08
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
raw: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
head: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea00015f0201 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5829, tgid 5829 (syz-executor), ts 99188561302, free_ts 32585661858
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2589 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2642
 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_node_track_caller_noprof+0x2f1/0x510 mm/slub.c:4317
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:609
 pskb_expand_head+0x243/0x1240 net/core/skbuff.c:2275
 netlink_trim+0x1ef/0x250 net/netlink/af_netlink.c:1303
 netlink_broadcast_filtered+0xc7/0xef0 net/netlink/af_netlink.c:1509
 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline]
 nlmsg_multicast include/net/netlink.h:1147 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2585
 rtnl_notify net/core/rtnetlink.c:943 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4376 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4392 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4379 [inline]
 rtmsg_ifinfo+0x174/0x1a0 net/core/rtnetlink.c:4398
 __dev_notify_flags+0x24e/0x2e0 net/core/dev.c:9003
 dev_change_flags+0x10c/0x160 net/core/dev.c:9045
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
 free_contig_range+0x133/0x3f0 mm/page_alloc.c:6635
 destroy_args+0x802/0xa50 mm/debug_vm_pgtable.c:1017
 debug_vm_pgtable+0x168e/0x31a0 mm/debug_vm_pgtable.c:1397
 do_one_initcall+0x12b/0x700 init/main.c:1266
 do_initcall_level init/main.c:1328 [inline]
 do_initcalls init/main.c:1344 [inline]
 do_basic_setup init/main.c:1363 [inline]
 kernel_init_freeable+0x5c7/0x900 init/main.c:1577
 kernel_init+0x1c/0x2b0 init/main.c:1466
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888057c0d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888057c0d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff888057c0d180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
BUG: KASAN: slab-use-after-free in raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
BUG: KASAN: slab-use-after-free in atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline]
BUG: KASAN: slab-use-after-free in __sock_queue_rcv_skb+0x6fe/0xa80 net/core/sock.c:484
Read of size 4 at addr ffff888057c0d140 by task syz.2.1022/8595

CPU: 1 UID: 0 PID: 8595 Comm: syz.2.1022 Tainted: G    B              6.13.0-rc7-syzkaller-00209-g9528d418de4d #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
 raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline]
 __sock_queue_rcv_skb+0x6fe/0xa80 net/core/sock.c:484
 sock_queue_rcv_skb_reason+0xa2/0xe0 net/core/sock.c:525
 sock_queue_rcv_skb include/net/sock.h:2399 [inline]
 mgmt_cmd_status+0x304/0x520 net/bluetooth/mgmt_util.c:156
 cmd_status_rsp net/bluetooth/mgmt.c:1458 [inline]
 cmd_complete_rsp+0x165/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9584
 hci_dev_close_sync+0xcbb/0x11a0 net/bluetooth/hci_sync.c:5209
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:482
 hci_dev_close+0x183/0x1e0 net/bluetooth/hci_core.c:507
 hci_sock_ioctl+0x2b5/0x7d0 net/bluetooth/hci_sock.c:1128
 sock_do_ioctl+0x119/0x280 net/socket.c:1209
 sock_ioctl+0x228/0x6c0 net/socket.c:1328
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f034dd85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f034ebe5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f034df75fa0 RCX: 00007f034dd85d29
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000004
RBP: 00007f034de01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f034df75fa0 R15: 00007ffc75ec7218
 </TASK>

Allocated by task 6867:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4298 [inline]
 __kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2168
 sk_alloc+0x36/0xb90 net/core/sock.c:2221
 bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
 hci_sock_create+0xbc/0x1a0 net/bluetooth/hci_sock.c:2202
 bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x338/0x8d0 net/socket.c:1558
 sock_create net/socket.c:1616 [inline]
 __sys_socket_create net/socket.c:1653 [inline]
 __sys_socket+0x14f/0x260 net/socket.c:1700
 __do_sys_socket net/socket.c:1714 [inline]
 __se_sys_socket net/socket.c:1712 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1712
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8604:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4613 [inline]
 kfree+0x14f/0x4b0 mm/slub.c:4761
 sk_prot_free net/core/sock.c:2204 [inline]
 __sk_destruct+0x5eb/0x720 net/core/sock.c:2296
 sk_destruct+0xc2/0xf0 net/core/sock.c:2311
 __sk_free+0xf4/0x3e0 net/core/sock.c:2322
 sk_free+0x6a/0x90 net/core/sock.c:2333
 sock_put include/net/sock.h:1910 [inline]
 mgmt_pending_free+0xc0/0xf0 net/bluetooth/mgmt_util.c:307
 cmd_status_rsp net/bluetooth/mgmt.c:1459 [inline]
 cmd_complete_rsp+0x16d/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x145/0x300 net/bluetooth/mgmt.c:9517
 hci_sock_bind+0xb57/0x14d0 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind_socket net/socket.c:1819 [inline]
 __sys_bind+0x216/0x260 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x72/0xb0 net/socket.c:1861
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888057c0d000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 320 bytes inside of
 freed 2048-byte region [ffff888057c0d000, ffff888057c0d800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888057c0f000 pfn:0x57c08
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
raw: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
head: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea00015f0201 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5829, tgid 5829 (syz-executor), ts 99188561302, free_ts 32585661858
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2589 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2642
 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_node_track_caller_noprof+0x2f1/0x510 mm/slub.c:4317
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:609
 pskb_expand_head+0x243/0x1240 net/core/skbuff.c:2275
 netlink_trim+0x1ef/0x250 net/netlink/af_netlink.c:1303
 netlink_broadcast_filtered+0xc7/0xef0 net/netlink/af_netlink.c:1509
 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline]
 nlmsg_multicast include/net/netlink.h:1147 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2585
 rtnl_notify net/core/rtnetlink.c:943 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4376 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4392 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4379 [inline]
 rtmsg_ifinfo+0x174/0x1a0 net/core/rtnetlink.c:4398
 __dev_notify_flags+0x24e/0x2e0 net/core/dev.c:9003
 dev_change_flags+0x10c/0x160 net/core/dev.c:9045
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
 free_contig_range+0x133/0x3f0 mm/page_alloc.c:6635
 destroy_args+0x802/0xa50 mm/debug_vm_pgtable.c:1017
 debug_vm_pgtable+0x168e/0x31a0 mm/debug_vm_pgtable.c:1397
 do_one_initcall+0x12b/0x700 init/main.c:1266
 do_initcall_level init/main.c:1328 [inline]
 do_initcalls init/main.c:1344 [inline]
 do_basic_setup init/main.c:1363 [inline]
 kernel_init_freeable+0x5c7/0x900 init/main.c:1577
 kernel_init+0x1c/0x2b0 init/main.c:1466
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888057c0d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888057c0d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff888057c0d180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in __sock_queue_rcv_skb+0x708/0xa80 net/core/sock.c:484
Read of size 4 at addr ffff888057c0d174 by task syz.2.1022/8595

CPU: 0 UID: 0 PID: 8595 Comm: syz.2.1022 Tainted: G    B              6.13.0-rc7-syzkaller-00209-g9528d418de4d #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 __sock_queue_rcv_skb+0x708/0xa80 net/core/sock.c:484
 sock_queue_rcv_skb_reason+0xa2/0xe0 net/core/sock.c:525
 sock_queue_rcv_skb include/net/sock.h:2399 [inline]
 mgmt_cmd_status+0x304/0x520 net/bluetooth/mgmt_util.c:156
 cmd_status_rsp net/bluetooth/mgmt.c:1458 [inline]
 cmd_complete_rsp+0x165/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9584
 hci_dev_close_sync+0xcbb/0x11a0 net/bluetooth/hci_sync.c:5209
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:482
 hci_dev_close+0x183/0x1e0 net/bluetooth/hci_core.c:507
 hci_sock_ioctl+0x2b5/0x7d0 net/bluetooth/hci_sock.c:1128
 sock_do_ioctl+0x119/0x280 net/socket.c:1209
 sock_ioctl+0x228/0x6c0 net/socket.c:1328
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f034dd85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f034ebe5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f034df75fa0 RCX: 00007f034dd85d29
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000004
RBP: 00007f034de01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f034df75fa0 R15: 00007ffc75ec7218
 </TASK>

Allocated by task 6867:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4298 [inline]
 __kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2168
 sk_alloc+0x36/0xb90 net/core/sock.c:2221
 bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
 hci_sock_create+0xbc/0x1a0 net/bluetooth/hci_sock.c:2202
 bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x338/0x8d0 net/socket.c:1558
 sock_create net/socket.c:1616 [inline]
 __sys_socket_create net/socket.c:1653 [inline]
 __sys_socket+0x14f/0x260 net/socket.c:1700
 __do_sys_socket net/socket.c:1714 [inline]
 __se_sys_socket net/socket.c:1712 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1712
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8604:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4613 [inline]
 kfree+0x14f/0x4b0 mm/slub.c:4761
 sk_prot_free net/core/sock.c:2204 [inline]
 __sk_destruct+0x5eb/0x720 net/core/sock.c:2296
 sk_destruct+0xc2/0xf0 net/core/sock.c:2311
 __sk_free+0xf4/0x3e0 net/core/sock.c:2322
 sk_free+0x6a/0x90 net/core/sock.c:2333
 sock_put include/net/sock.h:1910 [inline]
 mgmt_pending_free+0xc0/0xf0 net/bluetooth/mgmt_util.c:307
 cmd_status_rsp net/bluetooth/mgmt.c:1459 [inline]
 cmd_complete_rsp+0x16d/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x145/0x300 net/bluetooth/mgmt.c:9517
 hci_sock_bind+0xb57/0x14d0 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind_socket net/socket.c:1819 [inline]
 __sys_bind+0x216/0x260 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x72/0xb0 net/socket.c:1861
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888057c0d000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 372 bytes inside of
 freed 2048-byte region [ffff888057c0d000, ffff888057c0d800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888057c0f000 pfn:0x57c08
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
raw: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
head: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea00015f0201 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5829, tgid 5829 (syz-executor), ts 99188561302, free_ts 32585661858
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2589 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2642
 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_node_track_caller_noprof+0x2f1/0x510 mm/slub.c:4317
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:609
 pskb_expand_head+0x243/0x1240 net/core/skbuff.c:2275
 netlink_trim+0x1ef/0x250 net/netlink/af_netlink.c:1303
 netlink_broadcast_filtered+0xc7/0xef0 net/netlink/af_netlink.c:1509
 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline]
 nlmsg_multicast include/net/netlink.h:1147 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2585
 rtnl_notify net/core/rtnetlink.c:943 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4376 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4392 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4379 [inline]
 rtmsg_ifinfo+0x174/0x1a0 net/core/rtnetlink.c:4398
 __dev_notify_flags+0x24e/0x2e0 net/core/dev.c:9003
 dev_change_flags+0x10c/0x160 net/core/dev.c:9045
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
 free_contig_range+0x133/0x3f0 mm/page_alloc.c:6635
 destroy_args+0x802/0xa50 mm/debug_vm_pgtable.c:1017
 debug_vm_pgtable+0x168e/0x31a0 mm/debug_vm_pgtable.c:1397
 do_one_initcall+0x12b/0x700 init/main.c:1266
 do_initcall_level init/main.c:1328 [inline]
 do_initcalls init/main.c:1344 [inline]
 do_basic_setup init/main.c:1363 [inline]
 kernel_init_freeable+0x5c7/0x900 init/main.c:1577
 kernel_init+0x1c/0x2b0 init/main.c:1466
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888057c0d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888057c0d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff888057c0d180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in sk_has_account include/net/sock.h:1516 [inline]
BUG: KASAN: slab-use-after-free in __sk_rmem_schedule include/net/sock.h:1534 [inline]
BUG: KASAN: slab-use-after-free in sk_rmem_schedule include/net/sock.h:1544 [inline]
BUG: KASAN: slab-use-after-free in __sock_queue_rcv_skb+0x9dd/0xa80 net/core/sock.c:490
Read of size 8 at addr ffff888057c0d028 by task syz.2.1022/8595

CPU: 1 UID: 0 PID: 8595 Comm: syz.2.1022 Tainted: G    B              6.13.0-rc7-syzkaller-00209-g9528d418de4d #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 sk_has_account include/net/sock.h:1516 [inline]
 __sk_rmem_schedule include/net/sock.h:1534 [inline]
 sk_rmem_schedule include/net/sock.h:1544 [inline]
 __sock_queue_rcv_skb+0x9dd/0xa80 net/core/sock.c:490
 sock_queue_rcv_skb_reason+0xa2/0xe0 net/core/sock.c:525
 sock_queue_rcv_skb include/net/sock.h:2399 [inline]
 mgmt_cmd_status+0x304/0x520 net/bluetooth/mgmt_util.c:156
 cmd_status_rsp net/bluetooth/mgmt.c:1458 [inline]
 cmd_complete_rsp+0x165/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9584
 hci_dev_close_sync+0xcbb/0x11a0 net/bluetooth/hci_sync.c:5209
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:482
 hci_dev_close+0x183/0x1e0 net/bluetooth/hci_core.c:507
 hci_sock_ioctl+0x2b5/0x7d0 net/bluetooth/hci_sock.c:1128
 sock_do_ioctl+0x119/0x280 net/socket.c:1209
 sock_ioctl+0x228/0x6c0 net/socket.c:1328
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f034dd85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f034ebe5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f034df75fa0 RCX: 00007f034dd85d29
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000004
RBP: 00007f034de01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f034df75fa0 R15: 00007ffc75ec7218
 </TASK>

Allocated by task 6867:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4298 [inline]
 __kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2168
 sk_alloc+0x36/0xb90 net/core/sock.c:2221
 bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
 hci_sock_create+0xbc/0x1a0 net/bluetooth/hci_sock.c:2202
 bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x338/0x8d0 net/socket.c:1558
 sock_create net/socket.c:1616 [inline]
 __sys_socket_create net/socket.c:1653 [inline]
 __sys_socket+0x14f/0x260 net/socket.c:1700
 __do_sys_socket net/socket.c:1714 [inline]
 __se_sys_socket net/socket.c:1712 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1712
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8604:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4613 [inline]
 kfree+0x14f/0x4b0 mm/slub.c:4761
 sk_prot_free net/core/sock.c:2204 [inline]
 __sk_destruct+0x5eb/0x720 net/core/sock.c:2296
 sk_destruct+0xc2/0xf0 net/core/sock.c:2311
 __sk_free+0xf4/0x3e0 net/core/sock.c:2322
 sk_free+0x6a/0x90 net/core/sock.c:2333
 sock_put include/net/sock.h:1910 [inline]
 mgmt_pending_free+0xc0/0xf0 net/bluetooth/mgmt_util.c:307
 cmd_status_rsp net/bluetooth/mgmt.c:1459 [inline]
 cmd_complete_rsp+0x16d/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x145/0x300 net/bluetooth/mgmt.c:9517
 hci_sock_bind+0xb57/0x14d0 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind_socket net/socket.c:1819 [inline]
 __sys_bind+0x216/0x260 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x72/0xb0 net/socket.c:1861
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888057c0d000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 40 bytes inside of
 freed 2048-byte region [ffff888057c0d000, ffff888057c0d800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888057c0f000 pfn:0x57c08
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
raw: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
head: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea00015f0201 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5829, tgid 5829 (syz-executor), ts 99188561302, free_ts 32585661858
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2589 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2642
 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_node_track_caller_noprof+0x2f1/0x510 mm/slub.c:4317
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:609
 pskb_expand_head+0x243/0x1240 net/core/skbuff.c:2275
 netlink_trim+0x1ef/0x250 net/netlink/af_netlink.c:1303
 netlink_broadcast_filtered+0xc7/0xef0 net/netlink/af_netlink.c:1509
 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline]
 nlmsg_multicast include/net/netlink.h:1147 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2585
 rtnl_notify net/core/rtnetlink.c:943 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4376 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4392 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4379 [inline]
 rtmsg_ifinfo+0x174/0x1a0 net/core/rtnetlink.c:4398
 __dev_notify_flags+0x24e/0x2e0 net/core/dev.c:9003
 dev_change_flags+0x10c/0x160 net/core/dev.c:9045
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
 free_contig_range+0x133/0x3f0 mm/page_alloc.c:6635
 destroy_args+0x802/0xa50 mm/debug_vm_pgtable.c:1017
 debug_vm_pgtable+0x168e/0x31a0 mm/debug_vm_pgtable.c:1397
 do_one_initcall+0x12b/0x700 init/main.c:1266
 do_initcall_level init/main.c:1328 [inline]
 do_initcalls init/main.c:1344 [inline]
 do_basic_setup init/main.c:1363 [inline]
 kernel_init_freeable+0x5c7/0x900 init/main.c:1577
 kernel_init+0x1c/0x2b0 init/main.c:1466
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888057c0cf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888057c0cf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888057c0d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff888057c0d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: slab-use-after-free in atomic_add include/linux/atomic/atomic-instrumented.h:104 [inline]
BUG: KASAN: slab-use-after-free in skb_set_owner_r include/net/sock.h:2344 [inline]
BUG: KASAN: slab-use-after-free in __sock_queue_rcv_skb+0x2c8/0xa80 net/core/sock.c:496
Write of size 4 at addr ffff888057c0d140 by task syz.2.1022/8595

CPU: 0 UID: 0 PID: 8595 Comm: syz.2.1022 Tainted: G    B              6.13.0-rc7-syzkaller-00209-g9528d418de4d #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:489
 kasan_report+0xd9/0x110 mm/kasan/report.c:602
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0xef/0x1a0 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_add include/linux/atomic/atomic-instrumented.h:104 [inline]
 skb_set_owner_r include/net/sock.h:2344 [inline]
 __sock_queue_rcv_skb+0x2c8/0xa80 net/core/sock.c:496
 sock_queue_rcv_skb_reason+0xa2/0xe0 net/core/sock.c:525
 sock_queue_rcv_skb include/net/sock.h:2399 [inline]
 mgmt_cmd_status+0x304/0x520 net/bluetooth/mgmt_util.c:156
 cmd_status_rsp net/bluetooth/mgmt.c:1458 [inline]
 cmd_complete_rsp+0x165/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 __mgmt_power_off+0x12a/0x2c0 net/bluetooth/mgmt.c:9584
 hci_dev_close_sync+0xcbb/0x11a0 net/bluetooth/hci_sync.c:5209
 hci_dev_do_close+0x2e/0x90 net/bluetooth/hci_core.c:482
 hci_dev_close+0x183/0x1e0 net/bluetooth/hci_core.c:507
 hci_sock_ioctl+0x2b5/0x7d0 net/bluetooth/hci_sock.c:1128
 sock_do_ioctl+0x119/0x280 net/socket.c:1209
 sock_ioctl+0x228/0x6c0 net/socket.c:1328
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl fs/ioctl.c:892 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f034dd85d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f034ebe5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f034df75fa0 RCX: 00007f034dd85d29
RDX: 0000000000000000 RSI: 00000000400448ca RDI: 0000000000000004
RBP: 00007f034de01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f034df75fa0 R15: 00007ffc75ec7218
 </TASK>

Allocated by task 6867:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4298 [inline]
 __kmalloc_noprof+0x21c/0x510 mm/slub.c:4310
 kmalloc_noprof include/linux/slab.h:905 [inline]
 sk_prot_alloc+0x1a8/0x2a0 net/core/sock.c:2168
 sk_alloc+0x36/0xb90 net/core/sock.c:2221
 bt_sock_alloc+0x3b/0x3a0 net/bluetooth/af_bluetooth.c:148
 hci_sock_create+0xbc/0x1a0 net/bluetooth/hci_sock.c:2202
 bt_sock_create+0x185/0x350 net/bluetooth/af_bluetooth.c:132
 __sock_create+0x338/0x8d0 net/socket.c:1558
 sock_create net/socket.c:1616 [inline]
 __sys_socket_create net/socket.c:1653 [inline]
 __sys_socket+0x14f/0x260 net/socket.c:1700
 __do_sys_socket net/socket.c:1714 [inline]
 __se_sys_socket net/socket.c:1712 [inline]
 __x64_sys_socket+0x72/0xb0 net/socket.c:1712
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8604:
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x51/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4613 [inline]
 kfree+0x14f/0x4b0 mm/slub.c:4761
 sk_prot_free net/core/sock.c:2204 [inline]
 __sk_destruct+0x5eb/0x720 net/core/sock.c:2296
 sk_destruct+0xc2/0xf0 net/core/sock.c:2311
 __sk_free+0xf4/0x3e0 net/core/sock.c:2322
 sk_free+0x6a/0x90 net/core/sock.c:2333
 sock_put include/net/sock.h:1910 [inline]
 mgmt_pending_free+0xc0/0xf0 net/bluetooth/mgmt_util.c:307
 cmd_status_rsp net/bluetooth/mgmt.c:1459 [inline]
 cmd_complete_rsp+0x16d/0x1e0 net/bluetooth/mgmt.c:1478
 mgmt_pending_foreach+0xe2/0x140 net/bluetooth/mgmt_util.c:259
 mgmt_index_removed+0x145/0x300 net/bluetooth/mgmt.c:9517
 hci_sock_bind+0xb57/0x14d0 net/bluetooth/hci_sock.c:1307
 __sys_bind_socket net/socket.c:1827 [inline]
 __sys_bind_socket net/socket.c:1819 [inline]
 __sys_bind+0x216/0x260 net/socket.c:1858
 __do_sys_bind net/socket.c:1863 [inline]
 __se_sys_bind net/socket.c:1861 [inline]
 __x64_sys_bind+0x72/0xb0 net/socket.c:1861
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888057c0d000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 320 bytes inside of
 freed 2048-byte region [ffff888057c0d000, ffff888057c0d800)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888057c0f000 pfn:0x57c08
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000240(workingset|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
raw: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000240 ffff88801b042000 ffffea0001631210 ffffea000172c010
head: ffff888057c0f000 0000000000080003 00000001f5000000 0000000000000000
head: 00fff00000000003 ffffea00015f0201 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5829, tgid 5829 (syz-executor), ts 99188561302, free_ts 32585661858
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1558
 prep_new_page mm/page_alloc.c:1566 [inline]
 get_page_from_freelist+0xfce/0x2f80 mm/page_alloc.c:3476
 __alloc_pages_noprof+0x223/0x25b0 mm/page_alloc.c:4753
 alloc_pages_mpol_noprof+0x2c8/0x620 mm/mempolicy.c:2269
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab mm/slub.c:2589 [inline]
 new_slab+0x2c9/0x410 mm/slub.c:2642
 ___slab_alloc+0xd7d/0x17a0 mm/slub.c:3830
 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3920
 __slab_alloc_node mm/slub.c:3995 [inline]
 slab_alloc_node mm/slub.c:4156 [inline]
 __do_kmalloc_node mm/slub.c:4297 [inline]
 __kmalloc_node_track_caller_noprof+0x2f1/0x510 mm/slub.c:4317
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:609
 pskb_expand_head+0x243/0x1240 net/core/skbuff.c:2275
 netlink_trim+0x1ef/0x250 net/netlink/af_netlink.c:1303
 netlink_broadcast_filtered+0xc7/0xef0 net/netlink/af_netlink.c:1509
 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline]
 nlmsg_multicast include/net/netlink.h:1147 [inline]
 nlmsg_notify+0x9e/0x220 net/netlink/af_netlink.c:2585
 rtnl_notify net/core/rtnetlink.c:943 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4376 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4392 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4379 [inline]
 rtmsg_ifinfo+0x174/0x1a0 net/core/rtnetlink.c:4398
 __dev_notify_flags+0x24e/0x2e0 net/core/dev.c:9003
 dev_change_flags+0x10c/0x160 net/core/dev.c:9045
page last free pid 1 tgid 1 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1127 [inline]
 free_unref_page+0x661/0x1080 mm/page_alloc.c:2659
 free_contig_range+0x133/0x3f0 mm/page_alloc.c:6635
 destroy_args+0x802/0xa50 mm/debug_vm_pgtable.c:1017
 debug_vm_pgtable+0x168e/0x31a0 mm/debug_vm_pgtable.c:1397
 do_one_initcall+0x12b/0x700 init/main.c:1266
 do_initcall_level init/main.c:1328 [inline]
 do_initcalls init/main.c:1344 [inline]
 do_basic_setup init/main.c:1363 [inline]
 kernel_init_freeable+0x5c7/0x900 init/main.c:1577
 kernel_init+0x1c/0x2b0 init/main.c:1466
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff888057c0d000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888057c0d100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                           ^
 ffff888057c0d180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888057c0d200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================