====================================================== WARNING: possible circular locking dependency detected 4.15.0+ #220 Not tainted ------------------------------------------------------ syz-executor1/5786 is trying to acquire lock: (sk_lock-AF_INET6){+.+.}, at: [<0000000075029241>] lock_sock include/net/sock.h:1461 [inline] (sk_lock-AF_INET6){+.+.}, at: [<0000000075029241>] do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 but task is already holding lock: xt_l2tp: v2 sid > 0xffff: 4294967292 (rtnl_mutex){+.+.}, at: [<000000004356460f>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 xt_l2tp: v2 sid > 0xffff: 4294967292 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (rtnl_mutex){+.+.}: __mutex_lock_common kernel/locking/mutex.c:756 [inline] __mutex_lock+0x16f/0x1a80 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 register_netdevice_notifier+0xad/0x860 net/core/dev.c:1607 tee_tg_check+0x1a0/0x280 net/netfilter/xt_TEE.c:106 xt_check_target+0x22c/0x7d0 net/netfilter/x_tables.c:845 check_target net/ipv6/netfilter/ip6_tables.c:533 [inline] find_check_entry.isra.7+0x935/0xcf0 net/ipv6/netfilter/ip6_tables.c:575 translate_table+0xf52/0x1690 net/ipv6/netfilter/ip6_tables.c:744 do_replace net/ipv6/netfilter/ip6_tables.c:1160 [inline] do_ip6t_set_ctl+0x370/0x5f0 net/ipv6/netfilter/ip6_tables.c:1686 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115 ipv6_setsockopt+0x115/0x150 net/ipv6/ipv6_sockglue.c:928 rawv6_setsockopt+0x4a/0xf0 net/ipv6/raw.c:1060 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 -> #0 (sk_lock-AF_INET6){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920 lock_sock_nested+0xc2/0x110 net/core/sock.c:2780 lock_sock include/net/sock.h:1461 [inline] do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 ipv6_setsockopt+0xd7/0x150 net/ipv6/ipv6_sockglue.c:922 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(rtnl_mutex); lock(sk_lock-AF_INET6); lock(rtnl_mutex); lock(sk_lock-AF_INET6); *** DEADLOCK *** 1 lock held by syz-executor1/5786: #0: (rtnl_mutex){+.+.}, at: [<000000004356460f>] rtnl_lock+0x17/0x20 net/core/rtnetlink.c:74 stack backtrace: CPU: 0 PID: 5786 Comm: syz-executor1 Not tainted 4.15.0+ #220 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 print_circular_bug.isra.38+0x2cd/0x2dc kernel/locking/lockdep.c:1223 check_prev_add kernel/locking/lockdep.c:1863 [inline] check_prevs_add kernel/locking/lockdep.c:1976 [inline] validate_chain kernel/locking/lockdep.c:2417 [inline] __lock_acquire+0x30a8/0x3e00 kernel/locking/lockdep.c:3431 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3920 lock_sock_nested+0xc2/0x110 net/core/sock.c:2780 lock_sock include/net/sock.h:1461 [inline] do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 ipv6_setsockopt+0xd7/0x150 net/ipv6/ipv6_sockglue.c:922 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f4ee7c33c58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000000000001 RSI: 0000000000000029 RDI: 0000000000000013 RBP: 00000000000005ce R08: 0000000000000004 R09: 0000000000000000 R10: 00000000209fe000 R11: 0000000000000212 R12: 00000000006f7bf0 R13: 00000000ffffffff R14: 00007f4ee7c346d4 R15: 0000000000000000 netlink: 44 bytes leftover after parsing attributes in process `syz-executor3'. IPv4: Oversized IP packet from 127.0.0.1 netlink: 44 bytes leftover after parsing attributes in process `syz-executor3'. Cannot find add_set index 0 as target Cannot find add_set index 0 as target device syz0 entered promiscuous mode device syz0 left promiscuous mode device syz0 entered promiscuous mode netlink: 'syz-executor4': attribute type 21 has an invalid length. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=41915 sclass=netlink_route_socket pig=6155 comm=syz-executor7 ieee80211 phy2: Selected rate control algorithm 'minstrel_ht' openvswitch: netlink: Flow get message rejected, Key attribute missing. ieee80211 phy3: Selected rate control algorithm 'minstrel_ht' openvswitch: netlink: Flow get message rejected, Key attribute missing. kauditd_printk_skb: 11 callbacks suppressed audit: type=1400 audit(1517689617.934:33): avc: denied { prog_run } for pid=6331 comm="syz-executor3" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 audit: type=1400 audit(1517689618.005:34): avc: denied { create } for pid=6357 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=1 audit: type=1400 audit(1517689618.015:35): avc: denied { write } for pid=6357 comm="syz-executor4" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_fib_lookup_socket permissive=1 IPv4: Oversized IP packet from 127.0.0.1 IPv4: Oversized IP packet from 127.0.0.1 syz0: Invalid MTU 0 requested, hw min 68 audit: type=1400 audit(1517689618.161:36): avc: denied { net_broadcast } for pid=6394 comm="syz-executor6" capability=11 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 sctp: [Deprecated]: syz-executor7 (pid 6409) Use of int in max_burst socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor7 (pid 6392) Use of int in max_burst socket option. Use struct sctp_assoc_value instead syz0: Invalid MTU 0 requested, hw min 68 mip6: mip6_rthdr_init_state: spi is not 0: 3942907904 mip6: mip6_rthdr_init_state: spi is not 0: 3942907904 netlink: 'syz-executor5': attribute type 21 has an invalid length. audit: type=1400 audit(1517689618.527:37): avc: denied { create } for pid=6538 comm="syz-executor1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_rdma_socket permissive=1 syz-executor0 (6516) used greatest stack depth: 14704 bytes left audit: type=1400 audit(1517689618.744:38): avc: denied { setopt } for pid=6622 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 netlink: 'syz-executor6': attribute type 1 has an invalid length. netlink: 'syz-executor6': attribute type 1 has an invalid length. netlink: 'syz-executor6': attribute type 26 has an invalid length. netlink: 'syz-executor6': attribute type 1 has an invalid length. netlink: 'syz-executor6': attribute type 1 has an invalid length. netlink: 'syz-executor6': attribute type 26 has an invalid length. can: request_module (can-proto-3) failed. can: request_module (can-proto-3) failed. Cannot find add_set index 0 as target audit: type=1400 audit(1517689619.537:39): avc: denied { ioctl } for pid=6930 comm="syz-executor1" path="socket:[16485]" dev="sockfs" ino=16485 ioctlcmd=0x894b scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 IPVS: length: 760 != 24 IPVS: length: 760 != 24 netlink: 7 bytes leftover after parsing attributes in process `syz-executor5'. audit: type=1400 audit(1517689620.067:40): avc: denied { create } for pid=7134 comm="syz-executor0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_crypto_socket permissive=1 PF_BRIDGE: br_mdb_parse() with invalid ifindex audit: type=1400 audit(1517689620.166:41): avc: denied { map } for pid=7167 comm="syz-executor5" path="socket:[17486]" dev="sockfs" ino=17486 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=rawip_socket permissive=1 audit: type=1400 audit(1517689620.207:42): avc: denied { bind } for pid=7166 comm="syz-executor1" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 sctp: [Deprecated]: syz-executor5 (pid 7245) Use of int in max_burst socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor5 (pid 7227) Use of int in max_burst socket option. Use struct sctp_assoc_value instead Cannot find set identified by id 0 to match Cannot find set identified by id 0 to match dccp_close: ABORT with 242 bytes unread oom_reaper: reaped process 7424 (syz-executor2), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB syz-executor2 invoked oom-killer: gfp_mask=0x14002c2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN), nodemask=(null), order=0, oom_score_adj=0 syz-executor2 cpuset=/ mems_allowed=0 syz-executor2: vmalloc: allocation failure, allocated 3216601088 of 4294971392 bytes, mode:0x14000c0(GFP_KERNEL), nodemask=(null) syz-executor2 cpuset=/ mems_allowed=0 CPU: 0 PID: 7424 Comm: syz-executor2 Not tainted 4.15.0+ #220 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 warn_alloc+0x19a/0x2b0 mm/page_alloc.c:3306 __vmalloc_area_node mm/vmalloc.c:1718 [inline] __vmalloc_node_range+0x482/0x650 mm/vmalloc.c:1759 __vmalloc_node mm/vmalloc.c:1804 [inline] __vmalloc_node_flags_caller+0x50/0x60 mm/vmalloc.c:1826 kvmalloc_node+0x82/0xd0 mm/util.c:428 kvmalloc include/linux/mm.h:541 [inline] xt_alloc_table_info+0x64/0xe0 net/netfilter/x_tables.c:1006 do_replace net/ipv4/netfilter/ip_tables.c:1130 [inline] do_ipt_set_ctl+0x29b/0x5f0 net/ipv4/netfilter/ip_tables.c:1675 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115 ip_setsockopt+0xa1/0xb0 net/ipv4/ip_sockglue.c:1260 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f50d465dc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f50d465e700 RCX: 0000000000453299 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000014 RBP: 0000000000000000 R08: 00000000000002f8 R09: 0000000000000000 R10: 0000000020019d08 R11: 0000000000000212 R12: 0000000000000000 R13: 0000000000a2f33f R14: 00007f50d465e9c0 R15: 0000000000000000 Mem-Info: active_anon:51679 inactive_anon:63 isolated_anon:0 active_file:27 inactive_file:8 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:7500 slab_unreclaimable:87643 mapped:16524 shmem:70 pagetables:623 bounce:0 free:15933 free_pcp:139 free_cma:0 Node 0 active_anon:206716kB inactive_anon:252kB active_file:108kB inactive_file:32kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:66096kB dirty:0kB writeback:0kB shmem:280kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 83968kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2868 6378 6378 Node 0 DMA32 free:28304kB min:30316kB low:37892kB high:45468kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129292kB managed:2939968kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:164kB local_pcp:44kB free_cma:0kB lowmem_reserve[]: 0 0 3510 3510 Node 0 Normal free:19520kB min:37100kB low:46372kB high:55644kB active_anon:206716kB inactive_anon:252kB active_file:108kB inactive_file:52kB unevictable:0kB writepending:0kB present:4718592kB managed:3594332kB mlocked:0kB kernel_stack:4000kB pagetables:2492kB bounce:0kB free_pcp:392kB local_pcp:348kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 2*4kB (M) 1*8kB (M) 4*16kB (UM) 2*32kB (M) 2*64kB (UM) 3*128kB (M) 2*256kB (M) 3*512kB (UM) 3*1024kB (M) 1*2048kB (M) 5*4096kB (M) = 28304kB Node 0 Normal: 636*4kB (M) 388*8kB (UM) 201*16kB (UME) 87*32kB (UME) 35*64kB (UME) 44*128kB (UM) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 19520kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 110 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965969 pages RAM 0 pages HighMem/MovableOnly 328417 pages reserved CPU: 1 PID: 7431 Comm: syz-executor2 Not tainted 4.15.0+ #220 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 dump_header+0x28c/0xe1e mm/oom_kill.c:437 oom_kill_process+0x8b9/0x1550 mm/oom_kill.c:866 out_of_memory+0x86d/0x1220 mm/oom_kill.c:1080 __alloc_pages_may_oom mm/page_alloc.c:3402 [inline] __alloc_pages_slowpath+0x1d1b/0x2d00 mm/page_alloc.c:4103 __alloc_pages_nodemask+0x9fb/0xd80 mm/page_alloc.c:4259 alloc_pages_current+0xb6/0x1e0 mm/mempolicy.c:2055 alloc_pages include/linux/gfp.h:492 [inline] __vmalloc_area_node mm/vmalloc.c:1699 [inline] __vmalloc_node_range+0x409/0x650 mm/vmalloc.c:1759 __vmalloc_node mm/vmalloc.c:1804 [inline] __vmalloc_node_flags_caller+0x50/0x60 mm/vmalloc.c:1826 kvmalloc_node+0x82/0xd0 mm/util.c:428 kvmalloc include/linux/mm.h:541 [inline] xt_alloc_table_info+0x64/0xe0 net/netfilter/x_tables.c:1006 do_replace net/ipv4/netfilter/ip_tables.c:1130 [inline] do_ipt_set_ctl+0x29b/0x5f0 net/ipv4/netfilter/ip_tables.c:1675 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115 ip_setsockopt+0xa1/0xb0 net/ipv4/ip_sockglue.c:1260 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104 syz-executor2 (7424) used greatest stack depth: 12288 bytes left sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f50d461bc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000453299 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000019 RBP: 00000000000003d9 R08: 00000000000002f8 R09: 0000000000000000 R10: 0000000020019d08 R11: 0000000000000212 R12: 00000000006f4cf8 R13: 00000000ffffffff R14: 00007f50d461c6d4 R15: 000000000000000b Mem-Info: active_anon:51679 inactive_anon:63 isolated_anon:0 active_file:13 inactive_file:312 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:7500 slab_unreclaimable:87518 mapped:16714 shmem:70 pagetables:623 bounce:0 free:802852 free_pcp:392 free_cma:0 Node 0 active_anon:206716kB inactive_anon:252kB active_file:52kB inactive_file:1248kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:66856kB dirty:0kB writeback:0kB shmem:280kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 83968kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2868 6378 6378 Node 0 DMA32 free:1481212kB min:30316kB low:37892kB high:45468kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129292kB managed:2939968kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:792kB local_pcp:672kB free_cma:0kB lowmem_reserve[]: 0 0 3510 3510 Node 0 Normal free:1714032kB min:37100kB low:46372kB high:55644kB active_anon:206716kB inactive_anon:252kB active_file:60kB inactive_file:1300kB unevictable:0kB writepending:84kB present:4718592kB managed:3594332kB mlocked:0kB kernel_stack:4000kB pagetables:2492kB bounce:0kB free_pcp:940kB local_pcp:732kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 11575*4kB (UM) 11564*8kB (UM) 11574*16kB (UM) 11563*32kB (UM) 11560*64kB (UM) 92*128kB (UM) 9*256kB (UM) 7*512kB (UM) 3*1024kB (M) 1*2048kB (M) 6*4096kB (UM) = 1481212kB Node 0 Normal: 10070*4kB (UME) 9917*8kB (UM) 9709*16kB (UME) 9694*32kB (UME) 9228*64kB (UME) 462*128kB (UM) 146*256kB (UM) 87*512kB (U) 84*1024kB (U) 52*2048kB (U) 50*4096kB (U) = 1714128kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 411 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965969 pages RAM 0 pages HighMem/MovableOnly 328417 pages reserved Unreclaimable slab info: Name Used Total pid_2 293KB 296KB hashtab_node 118KB 119KB ebitmap_node 1987KB 1992KB avtab_node 1012KB 1013KB TIPC 77KB 79KB RDS 29KB 31KB rds_connection 1KB 4KB SCTPv6 370KB 372KB SCTP 212KB 213KB sctp_chunk 146KB 150KB sctp_bind_bucket 5KB 7KB tw_sock_DCCPv6 3KB 3KB DCCPv6 31KB 36KB tw_sock_DCCP 5KB 7KB request_sock_DCCP 3KB 3KB DCCP 36KB 40KB ccid2_hc_tx_sock 6KB 6KB ccid2_hc_rx_sock 0KB 3KB dccp_ackvec_record 3KB 3KB dccp_ackvec 7KB 7KB dccp_bind_bucket 7KB 8KB KCM 25KB 30KB kcm_psock_cache 4KB 7KB kcm_mux_cache 9KB 15KB can_receiver 1KB 3KB bridge_fdb_cache 5KB 7KB ip6-frags 1KB 3KB fib6_nodes 27KB 32KB ip6_dst_cache 426KB 431KB ip6_mrt_cache 1KB 4KB PINGv6 32KB 32KB RAWv6 224KB 227KB UDPLITEv6 10KB 10KB UDPv6 138KB 140KB tw_sock_TCPv6 3KB 3KB TCPv6 33KB 33KB AF_VSOCK 50KB 54KB sd_ext_cdb 0KB 3KB scsi_sense_cache 33KB 84KB virtio_scsi_cmd 16KB 16KB sgpool-128 8KB 8KB sgpool-64 4KB 6KB sgpool-32 33KB 39KB sgpool-16 18KB 18KB sgpool-8 83KB 150KB cfq_io_cq 19KB 19KB cfq_queue 12KB 19KB mqueue_inode_cache 1KB 7KB nfs_commit_data 3KB 7KB nfs_write_data 34KB 37KB jbd2_inode 2KB 3KB ext4_system_zone 0KB 3KB bio-1 1KB 3KB fasync_cache 2KB 4KB pid_namespace 2KB 7KB rpc_buffers 17KB 19KB rpc_tasks 2KB 3KB UNIX 255KB 301KB ip4-frags 1KB 7KB tcp_bind_bucket 9KB 12KB inet_peer_cache 2KB 8KB xfrm_dst_cache 1KB 4KB ip_fib_trie 4KB 7KB ip_fib_alias 43KB 47KB ip_dst_cache 39KB 40KB PING 18KB 21KB RAW 127KB 129KB UDP 115KB 117KB tw_sock_TCP 1KB 3KB request_sock_TCP 2KB 7KB TCP 49KB 63KB hugetlbfs_inode_cache 4KB 7KB eventpoll_pwq 12KB 23KB eventpoll_epi 25KB 55KB inotify_inode_mark 3KB 3KB request_queue 31KB 39KB blkdev_ioc 19KB 19KB bio-0 103KB 172KB biovec-(1<<(21-12)) 610KB 610KB biovec-64 32KB 39KB biovec-16 7KB 7KB bio_integrity_payload 0KB 4KB khugepaged_mm_slot 22KB 23KB user_namespace 5KB 7KB dmaengine-unmap-2 0KB 3KB audit_buffer 2KB 3KB skbuff_fclone_cache 411KB 412KB skbuff_head_cache 2099KB 2433KB configfs_dir_cache 0KB 4KB file_lock_cache 41KB 63KB file_lock_ctx 0KB 3KB fsnotify_mark_connector 2KB 3KB net_namespace 54KB 54KB shmem_inode_cache 1813KB 1813KB task_delay_info 531KB 533KB taskstats 231KB 233KB sigqueue 868KB 874KB kernfs_node_cache 5377KB 5378KB mnt_cache 83KB 88KB filp 7576KB 8471KB names_cache 76385KB 76423KB avc_node 50KB 51KB selinux_file_security 379KB 577KB selinux_inode_security 1974KB 1976KB key_jar 3KB 7KB nsproxy 2KB 7KB vm_area_struct 15725KB 16857KB mm_struct 3310KB 4601KB fs_cache 434KB 464KB files_cache 1489KB 1631KB signal_cache 2443KB 2522KB sighand_cache 302KB 353KB task_struct 17909KB 17964KB cred_jar 1857KB 2360KB anon_vma_chain 4093KB 6516KB anon_vma 216KB 365KB pid 112KB 224KB Acpi-Operand 312KB 792KB Acpi-Namespace 102KB 104KB numa_policy 0KB 3KB debug_objects_cache 492KB 516KB trace_event_file 149KB 151KB ftrace_event_field 261KB 263KB pool_workqueue 42KB 48KB page->ptl 2790KB 3209KB kmalloc-262144 1032KB 1032KB kmalloc-131072 1430KB 1430KB kmalloc-65536 264KB 264KB kmalloc-32768 21186KB 21483KB kmalloc-16384 2772KB 2920KB kmalloc-8192 2013KB 2013KB kmalloc-4096 7866KB 7892KB kmalloc-2048 9481KB 9492KB kmalloc-1024 7040KB 7040KB kmalloc-512 4091KB 4773KB kmalloc-256 2373KB 2666KB kmalloc-128 1128KB 1130KB kmalloc-96 1376KB 1376KB kmalloc-64 2429KB 2432KB kmalloc-32 2829KB 2831KB kmalloc-192 482KB 484KB kmem_cache 105KB 108KB [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 2097] 0 2097 5367 169 86016 0 -1000 udevd [ 3770] 0 3770 2493 573 61440 0 0 dhclient [ 3904] 0 3904 14298 173 118784 0 0 rsyslogd [ 3952] 0 3952 4725 51 81920 0 0 cron [ 3973] 0 3973 3735 44 69632 0 0 mcstransd [ 3979] 0 3979 12927 1228 139264 0 0 restorecond [ 4005] 0 4005 12490 152 135168 0 -1000 sshd [ 4029] 0 4029 3694 40 65536 0 0 getty [ 4030] 0 4030 3694 40 73728 0 0 getty [ 4031] 0 4031 3694 39 73728 0 0 getty [ 4032] 0 4032 3694 40 73728 0 0 getty [ 4033] 0 4033 3694 41 77824 0 0 getty [ 4034] 0 4034 3694 41 73728 0 0 getty [ 4035] 0 4035 3649 39 73728 0 0 getty [ 4039] 0 4039 5681 455 86016 0 -1000 udevd [ 4040] 0 4040 5681 455 86016 0 -1000 udevd [ 4056] 0 4056 17821 198 184320 0 0 sshd [ 4058] 0 4058 92054 47538 548864 0 0 syz-fuzzer [ 4100] 0 4100 7297 16 65536 0 0 syz-executor7 [ 4101] 0 4101 7297 15 69632 0 0 syz-executor4 [ 4102] 0 4102 7297 16 69632 0 0 syz-executor5 [ 4103] 0 4103 7296 2073 77824 0 0 syz-executor4 [ 4104] 0 4104 7296 2073 73728 0 0 syz-executor7 [ 4105] 0 4105 7297 16 61440 0 0 syz-executor6 [ 4106] 0 4106 7297 15 69632 0 0 syz-executor1 [ 4107] 0 4107 7296 2073 77824 0 0 syz-executor5 [ 4108] 0 4108 7297 15 65536 0 0 syz-executor3 [ 4109] 0 4109 7297 17 73728 0 0 syz-executor2 [ 4110] 0 4110 7296 2073 69632 0 0 syz-executor6 [ 4111] 0 4111 7296 2072 77824 0 0 syz-executor1 [ 4112] 0 4112 7297 16 65536 0 0 syz-executor0 [ 4114] 0 4114 7296 2073 73728 0 0 syz-executor0 [ 4113] 0 4113 7296 2073 73728 0 0 syz-executor3 [ 4115] 0 4115 7296 2074 81920 0 0 syz-executor2 [ 7431] 0 7422 11589 0 90112 0 0 syz-executor2 Out of memory: Kill process 4058 (syz-fuzzer) score 28 or sacrifice child Killed process 4109 (syz-executor2) total-vm:29188kB, anon-rss:64kB, file-rss:4kB, shmem-rss:0kB syz-executor2: vmalloc: allocation failure, allocated 2673856512 of 4294971392 bytes, mode:0x14000c0(GFP_KERNEL), nodemask=(null) syz-executor2 cpuset=/ mems_allowed=0 CPU: 0 PID: 7431 Comm: syz-executor2 Not tainted 4.15.0+ #220 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 warn_alloc+0x19a/0x2b0 mm/page_alloc.c:3306 __vmalloc_area_node mm/vmalloc.c:1718 [inline] __vmalloc_node_range+0x482/0x650 mm/vmalloc.c:1759 __vmalloc_node mm/vmalloc.c:1804 [inline] __vmalloc_node_flags_caller+0x50/0x60 mm/vmalloc.c:1826 kvmalloc_node+0x82/0xd0 mm/util.c:428 kvmalloc include/linux/mm.h:541 [inline] xt_alloc_table_info+0x64/0xe0 net/netfilter/x_tables.c:1006 do_replace net/ipv4/netfilter/ip_tables.c:1130 [inline] do_ipt_set_ctl+0x29b/0x5f0 net/ipv4/netfilter/ip_tables.c:1675 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline] nf_setsockopt+0x67/0xc0 net/netfilter/nf_sockopt.c:115 ip_setsockopt+0xa1/0xb0 net/ipv4/ip_sockglue.c:1260 sctp_setsockopt+0x2b6/0x61d0 net/sctp/socket.c:4104 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2978 SYSC_setsockopt net/socket.c:1849 [inline] SyS_setsockopt+0x189/0x360 net/socket.c:1828 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007f50d461bc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071c010 RCX: 0000000000453299 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000019 RBP: 00000000000003d9 R08: 00000000000002f8 R09: 0000000000000000 R10: 0000000020019d08 R11: 0000000000000212 R12: 00000000006f4cf8 R13: 00000000ffffffff R14: 00007f50d461c6d4 R15: 000000000000000b Mem-Info: active_anon:51654 inactive_anon:63 isolated_anon:0 active_file:15 inactive_file:685 isolated_file:0 unevictable:0 dirty:30 writeback:0 unstable:0 slab_reclaimable:7511 slab_unreclaimable:87281 mapped:14867 shmem:70 pagetables:586 bounce:0 free:802654 free_pcp:479 free_cma:0 Node 0 active_anon:206616kB inactive_anon:252kB active_file:60kB inactive_file:2940kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:59668kB dirty:120kB writeback:0kB shmem:280kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 83968kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 0 DMA free:15908kB min:164kB low:204kB high:244kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2868 6378 6378 Node 0 DMA32 free:1481212kB min:30316kB low:37892kB high:45468kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129292kB managed:2939968kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:792kB local_pcp:120kB free_cma:0kB lowmem_reserve[]: 0 0 3510 3510 Node 0 Normal free:1713232kB min:37100kB low:46372kB high:55644kB active_anon:206616kB inactive_anon:252kB active_file:60kB inactive_file:2940kB unevictable:0kB writepending:120kB present:4718592kB managed:3594332kB mlocked:0kB kernel_stack:3904kB pagetables:2344kB bounce:0kB free_pcp:1104kB local_pcp:384kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB Node 0 DMA32: 11575*4kB (UM) 11564*8kB (UM) 11574*16kB (UM) 11563*32kB (UM) 11560*64kB (UM) 92*128kB (UM) 9*256kB (UM) 7*512kB (UM) 3*1024kB (M) 1*2048kB (M) 6*4096kB (UM) = 1481212kB Node 0 Normal: 9636*4kB (UME) 9973*8kB (UM) 9727*16kB (UME) 9699*32kB (UME) 9230*64kB (UME) 460*128kB (UM) 146*256kB (UM) 86*512kB (U) 85*1024kB (U) 52*2048kB (U) 50*4096kB (U) = 1713672kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 881 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965969 pages RAM 0 pages HighMem/MovableOnly 328417 pages reserved