==================================================================
BUG: KASAN: use-after-free in bq_enqueue kernel/bpf/cpumap.c:749 [inline]
BUG: KASAN: use-after-free in cpu_map_enqueue+0xb4/0x370 kernel/bpf/cpumap.c:775
Read of size 8 at addr ffff88811380f508 by task syz.2.2186/8419
CPU: 1 PID: 8419 Comm: syz.2.2186 Not tainted 6.1.118-syzkaller-00077-g3f924195e222 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:316 [inline]
print_report+0x158/0x4e0 mm/kasan/report.c:427
kasan_report+0x13c/0x170 mm/kasan/report.c:531
__asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351
bq_enqueue kernel/bpf/cpumap.c:749 [inline]
cpu_map_enqueue+0xb4/0x370 kernel/bpf/cpumap.c:775
__xdp_do_redirect_frame net/core/filter.c:4300 [inline]
xdp_do_redirect_frame+0x275/0x800 net/core/filter.c:4358
xdp_test_run_batch net/bpf/test_run.c:314 [inline]
bpf_test_run_xdp_live+0xc30/0x1f70 net/bpf/test_run.c:362
bpf_prog_test_run_xdp+0x7d1/0x1130 net/bpf/test_run.c:1393
bpf_prog_test_run+0x3b0/0x630 kernel/bpf/syscall.c:3665
__sys_bpf+0x59f/0x7f0 kernel/bpf/syscall.c:5020
__do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f55dbf85d29
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:00007f55dcced038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f55dc176080 RCX: 00007f55dbf85d29
RDX: 0000000000000050 RSI: 00000000200000c0 RDI: 000000000000000a
RBP: 00007f55dc001b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f55dc176080 R15: 00007ffd906f5108
Allocated by task 8202:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:379 [inline]
__kasan_krealloc+0x119/0x160 mm/kasan/common.c:447
kasan_krealloc include/linux/kasan.h:232 [inline]
__do_krealloc mm/slab_common.c:1338 [inline]
krealloc+0xc3/0x110 mm/slab_common.c:1375
push_jmp_history kernel/bpf/verifier.c:2462 [inline]
is_state_visited kernel/bpf/verifier.c:12308 [inline]
do_check+0x2728/0xe040 kernel/bpf/verifier.c:12448
do_check_common+0x6ca/0xca0 kernel/bpf/verifier.c:14927
do_check_main kernel/bpf/verifier.c:14990 [inline]
bpf_check+0x6d12/0x17ed0 kernel/bpf/verifier.c:15567
bpf_prog_load+0x1304/0x1bf0 kernel/bpf/syscall.c:2626
__sys_bpf+0x52c/0x7f0 kernel/bpf/syscall.c:5002
__do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 8202:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:249
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1745 [inline]
slab_free_freelist_hook mm/slub.c:1771 [inline]
slab_free mm/slub.c:3686 [inline]
__kmem_cache_free+0x21d/0x410 mm/slub.c:3702
kfree+0x7a/0xf0 mm/slab_common.c:990
clear_jmp_history kernel/bpf/verifier.c:1099 [inline]
is_state_visited kernel/bpf/verifier.c:12345 [inline]
do_check+0x521f/0xe040 kernel/bpf/verifier.c:12448
do_check_common+0x6ca/0xca0 kernel/bpf/verifier.c:14927
do_check_main kernel/bpf/verifier.c:14990 [inline]
bpf_check+0x6d12/0x17ed0 kernel/bpf/verifier.c:15567
bpf_prog_load+0x1304/0x1bf0 kernel/bpf/syscall.c:2626
__sys_bpf+0x52c/0x7f0 kernel/bpf/syscall.c:5002
__do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
insert_work+0x56/0x310 kernel/workqueue.c:1368
__queue_work+0x9b6/0xd70 kernel/workqueue.c:1527
queue_work_on+0x105/0x170 kernel/workqueue.c:1555
queue_work include/linux/workqueue.h:510 [inline]
schedule_work include/linux/workqueue.h:571 [inline]
__cpu_map_entry_replace kernel/bpf/cpumap.c:558 [inline]
cpu_map_free+0x1e7/0x2c0 kernel/bpf/cpumap.c:641
bpf_map_free_deferred+0xf7/0x1b0 kernel/bpf/syscall.c:637
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Second to last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
__call_rcu_common kernel/rcu/tree.c:2807 [inline]
call_rcu+0xdc/0x10f0 kernel/rcu/tree.c:2926
__cpu_map_entry_replace kernel/bpf/cpumap.c:556 [inline]
cpu_map_free+0x109/0x2c0 kernel/bpf/cpumap.c:641
bpf_map_free_deferred+0xf7/0x1b0 kernel/bpf/syscall.c:637
process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
kthread+0x26d/0x300 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the object at ffff88811380f500
which belongs to the cache kmalloc-192 of size 192
The buggy address is located 8 bytes inside of
192-byte region [ffff88811380f500, ffff88811380f5c0)
The buggy address belongs to the physical page:
page:ffffea00044e03c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11380f
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 dead000000000100 dead000000000122 ffff888100042c00
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 5858, tgid 5855 (syz.8.1486), ts 209572712679, free_ts 209141609007
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x213/0x220 mm/page_alloc.c:2590
prep_new_page+0x1b/0x110 mm/page_alloc.c:2597
get_page_from_freelist+0x2f41/0x2fc0 mm/page_alloc.c:4462
__alloc_pages+0x234/0x610 mm/page_alloc.c:5759
alloc_slab_page+0x6c/0xf0
allocate_slab mm/slub.c:1962 [inline]
new_slab+0x90/0x3e0 mm/slub.c:2015
___slab_alloc+0x6f9/0xb80 mm/slub.c:3203
__slab_alloc+0x5d/0xa0 mm/slub.c:3302
slab_alloc_node mm/slub.c:3387 [inline]
__kmem_cache_alloc_node+0x207/0x2a0 mm/slub.c:3462
kmalloc_trace+0x2a/0xa0 mm/slab_common.c:1028
kmalloc include/linux/slab.h:557 [inline]
kzalloc include/linux/slab.h:693 [inline]
____ip_mc_inc_group+0x215/0x8d0 net/ipv4/igmp.c:1452
__ip_mc_inc_group net/ipv4/igmp.c:1487 [inline]
ip_mc_inc_group net/ipv4/igmp.c:1493 [inline]
ip_mc_up+0x10f/0x1e0 net/ipv4/igmp.c:1792
inetdev_event+0xc80/0x1110 net/ipv4/devinet.c:1590
notifier_call_chain kernel/notifier.c:87 [inline]
raw_notifier_call_chain+0x8c/0xf0 kernel/notifier.c:455
__dev_notify_flags+0x304/0x610
dev_change_flags+0xf0/0x1a0 net/core/dev.c:8685
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1498 [inline]
free_pcp_prepare mm/page_alloc.c:1572 [inline]
free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3511
free_unref_page_list+0xf1/0x7b0 mm/page_alloc.c:3659
release_pages+0xf7f/0xfe0 mm/swap.c:1063
free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:315
tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
tlb_flush_mmu mm/mmu_gather.c:261 [inline]
tlb_finish_mmu+0x1e0/0x3f0 mm/mmu_gather.c:361
exit_mmap+0x460/0xbe0 mm/mmap.c:3348
__mmput+0x95/0x310 kernel/fork.c:1299
mmput+0x56/0x170 kernel/fork.c:1322
exit_mm kernel/exit.c:568 [inline]
do_exit+0xb29/0x2b80 kernel/exit.c:864
do_group_exit+0x21a/0x2d0 kernel/exit.c:1027
get_signal+0x169d/0x1820 kernel/signal.c:2889
arch_do_signal_or_restart+0xb0/0x16f0 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x74/0xa0 kernel/entry/common.c:174
exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x26/0x130 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
Memory state around the buggy address:
ffff88811380f400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88811380f480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff88811380f500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88811380f580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
ffff88811380f600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
general protection fault, probably for non-canonical address 0xe09bed393ede040c: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x04df89c9f6f02060-0x04df89c9f6f02067]
CPU: 1 PID: 8419 Comm: syz.2.2186 Tainted: G B 6.1.118-syzkaller-00077-g3f924195e222 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:bq_enqueue kernel/bpf/cpumap.c:751 [inline]
RIP: 0010:cpu_map_enqueue+0x113/0x370 kernel/bpf/cpumap.c:775
Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 86 ee 24 00 4c 8b 23 4f 8d 74 3c 58 4d 89 f5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 a8 01 00 00 4d 01 fc 41 8b 1e bf 08
RSP: 0018:ffffc90000e97600 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffffff8674a898 RCX: 0000000000080000
RDX: ffffc9000ae31000 RSI: 0000000000032268 RDI: 0000000000032269
RBP: ffffc90000e97638 R08: ffffffff81980b5e R09: fffffbfff0f6e2fd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f6f00000
R13: 009bf1393ede040c R14: 04df89c9f6f02062 R15: 04e001480000200a
FS: 00007f55dcced6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000508f0000 CR3: 0000000127bf4000 CR4: 00000000003506a0
DR0: 0000000020000300 DR1: 0000000020000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__xdp_do_redirect_frame net/core/filter.c:4300 [inline]
xdp_do_redirect_frame+0x275/0x800 net/core/filter.c:4358
xdp_test_run_batch net/bpf/test_run.c:314 [inline]
bpf_test_run_xdp_live+0xc30/0x1f70 net/bpf/test_run.c:362
bpf_prog_test_run_xdp+0x7d1/0x1130 net/bpf/test_run.c:1393
bpf_prog_test_run+0x3b0/0x630 kernel/bpf/syscall.c:3665
__sys_bpf+0x59f/0x7f0 kernel/bpf/syscall.c:5020
__do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f55dbf85d29
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:00007f55dcced038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f55dc176080 RCX: 00007f55dbf85d29
RDX: 0000000000000050 RSI: 00000000200000c0 RDI: 000000000000000a
RBP: 00007f55dc001b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f55dc176080 R15: 00007ffd906f5108
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bq_enqueue kernel/bpf/cpumap.c:751 [inline]
RIP: 0010:cpu_map_enqueue+0x113/0x370 kernel/bpf/cpumap.c:775
Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 86 ee 24 00 4c 8b 23 4f 8d 74 3c 58 4d 89 f5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 a8 01 00 00 4d 01 fc 41 8b 1e bf 08
RSP: 0018:ffffc90000e97600 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffffff8674a898 RCX: 0000000000080000
RDX: ffffc9000ae31000 RSI: 0000000000032268 RDI: 0000000000032269
RBP: ffffc90000e97638 R08: ffffffff81980b5e R09: fffffbfff0f6e2fd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f6f00000
R13: 009bf1393ede040c R14: 04df89c9f6f02062 R15: 04e001480000200a
FS: 00007f55dcced6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000508f0000 CR3: 0000000127bf4000 CR4: 00000000003506a0
DR0: 0000000020000300 DR1: 0000000020000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
0: e8 03 42 80 3c call 0x3c804208
5: 30 00 xor %al,(%rax)
7: 74 08 je 0x11
9: 48 89 df mov %rbx,%rdi
c: e8 86 ee 24 00 call 0x24ee97
11: 4c 8b 23 mov (%rbx),%r12
14: 4f 8d 74 3c 58 lea 0x58(%r12,%r15,1),%r14
19: 4d 89 f5 mov %r14,%r13
1c: 49 c1 ed 03 shr $0x3,%r13
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 41 0f b6 44 05 00 movzbl 0x0(%r13,%rax,1),%eax <-- trapping instruction
30: 84 c0 test %al,%al
32: 0f 85 a8 01 00 00 jne 0x1e0
38: 4d 01 fc add %r15,%r12
3b: 41 8b 1e mov (%r14),%ebx
3e: bf .byte 0xbf
3f: 08 .byte 0x8