====================================================== WARNING: possible circular locking dependency detected 4.15.0-rc9+ #213 Not tainted ------------------------------------------------------ syz-executor7/5487 is trying to acquire lock: (&xt[i].mutex){+.+.}, at: [<00000000dbd46745>] xt_find_target+0x44/0x1e0 net/netfilter/x_tables.c:229 but task is already holding lock: (sk_lock-AF_INET6){+.+.}, at: [<0000000048883db2>] lock_sock include/net/sock.h:1463 [inline] (sk_lock-AF_INET6){+.+.}, at: [<0000000048883db2>] ipv6_setsockopt+0xff/0x150 net/ipv6/ipv6_sockglue.c:927 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (sk_lock-AF_INET6){+.+.}: lock_sock_nested+0xc2/0x110 net/core/sock.c:2780 lock_sock include/net/sock.h:1463 [inline] do_ipv6_setsockopt.isra.8+0x3c5/0x39d0 net/ipv6/ipv6_sockglue.c:167 ipv6_setsockopt+0xd7/0x150 net/ipv6/ipv6_sockglue.c:922 udpv6_setsockopt+0x45/0x80 net/ipv6/udp.c:1422 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 -> #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 unregister_netdevice_notifier+0x91/0x4e0 net/core/dev.c:1673 clusterip_config_entry_put net/ipv4/netfilter/ipt_CLUSTERIP.c:114 [inline] clusterip_tg_destroy+0x389/0x6e0 net/ipv4/netfilter/ipt_CLUSTERIP.c:508 cleanup_entry+0x218/0x350 net/ipv4/netfilter/ip_tables.c:659 __do_replace+0x79d/0xa50 net/ipv4/netfilter/ip_tables.c:1094 do_replace net/ipv4/netfilter/ip_tables.c:1150 [inline] do_ipt_set_ctl+0x40f/0x5f0 net/ipv4/netfilter/ip_tables.c:1680 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 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2872 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 (&xt[i].mutex){+.+.}: lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3914 __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 xt_find_target+0x44/0x1e0 net/netfilter/x_tables.c:229 xt_request_find_target+0x2c/0xb0 net/netfilter/x_tables.c:255 find_check_entry.isra.7+0x669/0xcf0 net/ipv6/netfilter/ip6_tables.c:572 translate_table+0xf52/0x1690 net/ipv6/netfilter/ip6_tables.c:749 do_replace net/ipv6/netfilter/ip6_tables.c:1165 [inline] do_ip6t_set_ctl+0x370/0x5f0 net/ipv6/netfilter/ip6_tables.c:1691 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 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2872 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: Chain exists of: &xt[i].mutex --> rtnl_mutex --> sk_lock-AF_INET6 Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(sk_lock-AF_INET6); lock(rtnl_mutex); lock(sk_lock-AF_INET6); lock(&xt[i].mutex); *** DEADLOCK *** 1 lock held by syz-executor7/5487: #0: (sk_lock-AF_INET6){+.+.}, at: [<0000000048883db2>] lock_sock include/net/sock.h:1463 [inline] #0: (sk_lock-AF_INET6){+.+.}, at: [<0000000048883db2>] ipv6_setsockopt+0xff/0x150 net/ipv6/ipv6_sockglue.c:927 stack backtrace: CPU: 0 PID: 5487 Comm: syz-executor7 Not tainted 4.15.0-rc9+ #213 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.37+0x2cd/0x2dc kernel/locking/lockdep.c:1218 check_prev_add kernel/locking/lockdep.c:1858 [inline] check_prevs_add kernel/locking/lockdep.c:1971 [inline] validate_chain kernel/locking/lockdep.c:2412 [inline] __lock_acquire+0x30a8/0x3e00 kernel/locking/lockdep.c:3426 lock_acquire+0x1d5/0x580 kernel/locking/lockdep.c:3914 __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 xt_find_target+0x44/0x1e0 net/netfilter/x_tables.c:229 xt_request_find_target+0x2c/0xb0 net/netfilter/x_tables.c:255 find_check_entry.isra.7+0x669/0xcf0 net/ipv6/netfilter/ip6_tables.c:572 translate_table+0xf52/0x1690 net/ipv6/netfilter/ip6_tables.c:749 do_replace net/ipv6/netfilter/ip6_tables.c:1165 [inline] do_ip6t_set_ctl+0x370/0x5f0 net/ipv6/netfilter/ip6_tables.c:1691 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 tcp_setsockopt+0x82/0xd0 net/ipv4/tcp.c:2872 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:00007fc653c0ec58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000453299 RDX: 0000000000000040 RSI: 0000000000000029 RDI: 0000000000000013 RBP: 0000000000000026 R08: 0000000000000408 R09: 0000000000000000 R10: 0000000020001000 R11: 0000000000000212 R12: 00000000006ef430 R13: 00000000ffffffff R14: 00007fc653c0f6d4 R15: 0000000000000000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 1 CPU: 1 PID: 5743 Comm: syz-executor3 Not tainted 4.15.0-rc9+ #213 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 fail_dump lib/fault-inject.c:51 [inline] should_fail+0x8c0/0xa40 lib/fault-inject.c:149 should_failslab+0xec/0x120 mm/failslab.c:32 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc_node mm/slab.c:3289 [inline] kmem_cache_alloc_node+0x56/0x760 mm/slab.c:3632 __alloc_skb+0xf1/0x780 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:983 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1180 [inline] netlink_sendmsg+0xa86/0xe60 net/netlink/af_netlink.c:1872 sock_sendmsg_nosec net/socket.c:630 [inline] sock_sendmsg+0xca/0x110 net/socket.c:640 ___sys_sendmsg+0x767/0x8b0 net/socket.c:2046 __sys_sendmsg+0xe5/0x210 net/socket.c:2080 SYSC_sendmsg net/socket.c:2091 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2087 entry_SYSCALL_64_fastpath+0x29/0xa0 RIP: 0033:0x453299 RSP: 002b:00007feb44233c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007feb44233aa0 RCX: 0000000000453299 RDX: 0000000000000000 RSI: 0000000020d65000 RDI: 0000000000000013 RBP: 00007feb44233a90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000212 R12: 00000000004b8096 R13: 00007feb44233bc8 R14: 00000000004b8096 R15: 0000000000000000 dccp_v4_rcv: dropped packet with invalid checksum dccp_invalid_packet: pskb_may_pull failed netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. xt_CT: You must specify a L4 protocol, and not use inversions on it. xt_CT: You must specify a L4 protocol, and not use inversions on it. kauditd_printk_skb: 16 callbacks suppressed audit: type=1400 audit(1517192776.726:38): avc: denied { getattr } for pid=6056 comm="syz-executor6" path="socket:[14799]" dev="sockfs" ino=14799 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 dccp_xmit_packet: Payload too large (65423) for featneg. dccp_xmit_packet: Payload too large (65423) for featneg. netlink: 3 bytes leftover after parsing attributes in process `syz-executor2'. sctp: [Deprecated]: syz-executor6 (pid 6276) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor6 (pid 6280) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead validate_nla: 45 callbacks suppressed netlink: 'syz-executor0': attribute type 21 has an invalid length. netlink: 'syz-executor3': attribute type 18 has an invalid length. netlink: 'syz-executor3': attribute type 18 has an invalid length. netlink: 'syz-executor3': attribute type 18 has an invalid length. netlink: 'syz-executor3': attribute type 18 has an invalid length. netlink: 'syz-executor0': attribute type 21 has an invalid length. netlink: 'syz-executor3': attribute type 18 has an invalid length. audit: type=1400 audit(1517192777.663:39): avc: denied { map } for pid=6363 comm="syz-executor7" path="pipe:[16041]" dev="pipefs" ino=16041 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=fifo_file permissive=1 netlink: 'syz-executor3': attribute type 18 has an invalid length. Dead loop on virtual device ip6_vti0, fix it urgently! Dead loop on virtual device ip6_vti0, fix it urgently! netlink: 'syz-executor3': attribute type 18 has an invalid length. netlink: 'syz-executor5': attribute type 15 has an invalid length. IPv4: Oversized IP packet from 127.0.0.1 IPv4: Oversized IP packet from 127.0.0.1 audit: type=1400 audit(1517192778.111:40): avc: denied { map } for pid=6534 comm="syz-executor4" path="socket:[16179]" dev="sockfs" ino=16179 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=tcp_socket permissive=1 audit: type=1400 audit(1517192778.111:41): avc: denied { net_bind_service } for pid=6537 comm="syz-executor2" capability=10 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 TCP: request_sock_TCPv6: Possible SYN flooding on port 20022. Sending cookies. Check SNMP counters. nla_parse: 3 callbacks suppressed netlink: 12 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 12 bytes leftover after parsing attributes in process `syz-executor3'. sctp: [Deprecated]: syz-executor4 (pid 6924) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor4 (pid 6924) Use of int in maxseg socket option. Use struct sctp_assoc_value instead xt_HL: TTL: invalid or unknown mode 100 netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor0'. audit: type=1400 audit(1517192779.583:42): avc: denied { accept } for pid=7093 comm="syz-executor5" 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: 8 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor4'. SELinux: unrecognized netlink message: protocol=9 nlmsg_type=16 sclass=netlink_audit_socket pig=7350 comm=syz-executor1 oom_reaper: reaped process 7346 (syz-executor6), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB syz-executor6: vmalloc: allocation failure, allocated 2878464000 of 4294971392 bytes, mode:0x14000c0(GFP_KERNEL), nodemask=(null) rsyslogd invoked oom-killer: gfp_mask=0x14200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=0 rsyslogd cpuset=/ mems_allowed=0 CPU: 0 PID: 3526 Comm: rsyslogd Not tainted 4.15.0-rc9+ #213 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+0x8b5/0x14a0 mm/oom_kill.c:865 out_of_memory+0x86d/0x1220 mm/oom_kill.c:1079 __alloc_pages_may_oom mm/page_alloc.c:3395 [inline] __alloc_pages_slowpath+0x1d1b/0x2d00 mm/page_alloc.c:4096 __alloc_pages_nodemask+0x9fb/0xd80 mm/page_alloc.c:4252 alloc_pages_current+0xb6/0x1e0 mm/mempolicy.c:2036 alloc_pages include/linux/gfp.h:492 [inline] __page_cache_alloc+0x334/0x500 mm/filemap.c:946 page_cache_read mm/filemap.c:2388 [inline] filemap_fault+0xefc/0x1c20 mm/filemap.c:2572 ext4_filemap_fault+0x82/0xad fs/ext4/inode.c:6164 __do_fault+0xeb/0x30f mm/memory.c:3202 do_read_fault mm/memory.c:3612 [inline] do_fault mm/memory.c:3712 [inline] handle_pte_fault mm/memory.c:3943 [inline] __handle_mm_fault+0x1d8f/0x3ce0 mm/memory.c:4067 handle_mm_fault+0x334/0x8d0 mm/memory.c:4104 __do_page_fault+0x5c9/0xc90 arch/x86/mm/fault.c:1430 do_page_fault+0xee/0x720 arch/x86/mm/fault.c:1505 page_fault+0x4c/0x60 arch/x86/entry/entry_64.S:1260 RIP: 0033:0x7fe73ab551fd RSP: 002b:00007fe7380f4e30 EFLAGS: 00010293 RAX: 0000000000000071 RBX: 00000000011ff4b0 RCX: 00007fe73ab551fd RDX: 0000000000000fff RSI: 00007fe7399295a0 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00000000011ea260 R09: 0000000004000001 R10: 0000000000000001 R11: 0000000000000293 R12: 000000000065e420 R13: 00007fe7380f59c0 R14: 00007fe73b19a040 R15: 0000000000000003 Mem-Info: active_anon:51274 inactive_anon:64 isolated_anon:0 active_file:24 inactive_file:0 isolated_file:0 unevictable:0 dirty:0 writeback:0 unstable:0 slab_reclaimable:7803 slab_unreclaimable:87400 mapped:16538 shmem:70 pagetables:624 bounce:0 free:16078 free_pcp:115 free_cma:0 Node 0 active_anon:205096kB inactive_anon:256kB active_file:96kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:66152kB 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:29048kB min:30320kB low:37900kB high:45480kB active_anon:0kB inactive_anon:0kB active_file:8kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2940016kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:120kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 3510 3510 Node 0 Normal free:19356kB min:37096kB low:46368kB high:55640kB active_anon:205196kB inactive_anon:256kB active_file:88kB inactive_file:112kB unevictable:0kB writepending:0kB present:4718592kB managed:3594332kB mlocked:0kB kernel_stack:3840kB pagetables:2496kB bounce:0kB free_pcp:340kB local_pcp:220kB 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: 4*4kB (ME) 3*8kB (ME) 5*16kB (UME) 2*32kB (ME) 3*64kB (ME) 4*128kB (ME) 4*256kB (UME) 3*512kB (ME) 5*1024kB (UME) 2*2048kB (ME) 4*4096kB (M) = 29048kB Node 0 Normal: 647*4kB (M) 356*8kB (UM) 186*16kB (UM) 84*32kB (UM) 36*64kB (UM) 15*128kB (UM) 15*256kB (UM) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 19676kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 121 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 328415 pages reserved Unreclaimable slab info: Name Used Total pid_2 352KB 352KB hashtab_node 118KB 119KB ebitmap_node 2260KB 2260KB avtab_node 1012KB 1013KB TIPC 57KB 57KB RDS 70KB 70KB rds_connection 4KB 4KB SCTPv6 308KB 308KB SCTP 224KB 224KB sctp_chunk 75KB 75KB sctp_bind_bucket 7KB 7KB tw_sock_DCCPv6 3KB 3KB request_sock_DCCPv6 3KB 3KB DCCPv6 51KB 51KB tw_sock_DCCP 3KB 3KB request_sock_DCCP 1KB 3KB DCCP 54KB 54KB ccid2_hc_tx_sock 27KB 27KB ccid2_hc_rx_sock 0KB 3KB dccp_ackvec_record 1KB 3KB dccp_ackvec 13KB 15KB dccp_bind_bucket 4KB 4KB KCM 30KB 30KB kcm_mux_cache 22KB 22KB can_receiver 1KB 3KB bridge_fdb_cache 7KB 7KB xfrm6_tunnel_spi 0KB 4KB ip6-frags 0KB 3KB fib6_nodes 28KB 28KB ip6_dst_cache 412KB 412KB ip6_mrt_cache 0KB 4KB PINGv6 39KB 39KB RAWv6 234KB 234KB UDPLITEv6 3KB 3KB UDPv6 203KB 203KB request_sock_TCPv6 2KB 3KB TCPv6 78KB 78KB nf_conntrack 3KB 3KB AF_VSOCK 47KB 47KB sd_ext_cdb 0KB 3KB scsi_sense_cache 30KB 72KB virtio_scsi_cmd 16KB 16KB sgpool-128 8KB 8KB sgpool-64 4KB 6KB sgpool-32 16KB 47KB sgpool-16 15KB 15KB sgpool-8 57KB 123KB cfq_io_cq 2KB 15KB cfq_queue 2KB 19KB mqueue_inode_cache 33KB 35KB 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 4KB 7KB rpc_buffers 17KB 19KB rpc_tasks 2KB 3KB UNIX 299KB 350KB ip4-frags 4KB 7KB tcp_bind_bucket 12KB 12KB inet_peer_cache 3KB 8KB ip_fib_trie 5KB 7KB ip_fib_alias 43KB 47KB ip_dst_cache 36KB 36KB PING 43KB 43KB RAW 165KB 165KB UDP 132KB 132KB tw_sock_TCP 3KB 7KB TCP 78KB 78KB hugetlbfs_inode_cache 23KB 23KB eventpoll_pwq 7KB 15KB eventpoll_epi 16KB 27KB inotify_inode_mark 3KB 7KB request_queue 33KB 67KB blkdev_ioc 3KB 23KB bio-0 94KB 165KB biovec-(1<<(21-12)) 486KB 486KB biovec-64 25KB 63KB biovec-16 0KB 3KB bio_integrity_payload 0KB 4KB khugepaged_mm_slot 30KB 31KB user_namespace 5KB 7KB uid_cache 0KB 3KB dmaengine-unmap-2 0KB 3KB audit_buffer 3KB 3KB skbuff_fclone_cache 585KB 585KB skbuff_head_cache 2040KB 2640KB configfs_dir_cache 0KB 4KB file_lock_cache 43KB 63KB file_lock_ctx 0KB 3KB fsnotify_mark_connector 2KB 3KB net_namespace 54KB 54KB shmem_inode_cache 2030KB 2030KB task_delay_info 596KB 596KB taskstats 298KB 298KB sigqueue 1708KB 1708KB kernfs_node_cache 4425KB 4425KB mnt_cache 98KB 100KB filp 7438KB 7901KB names_cache 72683KB 72721KB avc_node 55KB 55KB selinux_file_security 373KB 492KB selinux_inode_security 2068KB 2068KB key_jar 3KB 7KB nsproxy 4KB 7KB vm_area_struct 16438KB 17359KB mm_struct 3435KB 4562KB fs_cache 416KB 440KB files_cache 1566KB 1616KB signal_cache 2537KB 2537KB sighand_cache 316KB 339KB task_struct 20053KB 20108KB cred_jar 1753KB 2376KB anon_vma_chain 4346KB 5977KB anon_vma 213KB 327KB pid 96KB 200KB Acpi-Operand 106KB 170KB Acpi-Namespace 19KB 23KB numa_policy 0KB 3KB debug_objects_cache 430KB 430KB trace_event_file 149KB 151KB ftrace_event_field 261KB 263KB pool_workqueue 40KB 44KB page->ptl 2986KB 3142KB kmalloc-262144 1032KB 1032KB kmalloc-131072 1950KB 1950KB kmalloc-65536 330KB 330KB kmalloc-32768 23397KB 23694KB kmalloc-16384 2607KB 2755KB kmalloc-8192 2013KB 2013KB kmalloc-4096 7433KB 7467KB kmalloc-2048 9721KB 9721KB kmalloc-1024 7394KB 7394KB kmalloc-512 3834KB 4646KB kmalloc-256 2257KB 2347KB kmalloc-128 1232KB 1232KB kmalloc-96 1604KB 1604KB kmalloc-64 2548KB 2548KB kmalloc-32 3071KB 3071KB kmalloc-192 476KB 476KB kmem_cache 108KB 112KB [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 1843] 0 1843 5385 182 86016 0 -1000 udevd [ 3391] 0 3391 2493 573 61440 0 0 dhclient [ 3522] 0 3522 14298 174 118784 0 0 rsyslogd [ 3570] 0 3570 4725 51 86016 0 0 cron [ 3595] 0 3595 3736 45 69632 0 0 mcstransd [ 3605] 0 3605 12927 1233 131072 0 0 restorecond [ 3618] 0 3618 12490 152 135168 0 -1000 sshd [ 3647] 0 3647 3694 39 73728 0 0 getty [ 3648] 0 3648 3694 40 73728 0 0 getty [ 3649] 0 3649 3694 40 73728 0 0 getty [ 3650] 0 3650 3694 41 69632 0 0 getty [ 3651] 0 3651 3694 40 77824 0 0 getty [ 3652] 0 3652 3694 41 73728 0 0 getty [ 3653] 0 3653 3649 40 73728 0 0 getty [ 3656] 0 3656 5681 455 86016 0 -1000 udevd [ 3657] 0 3657 5681 455 86016 0 -1000 udevd [ 3672] 0 3672 17821 197 192512 0 0 sshd [ 3674] 0 3674 90609 47054 544768 0 0 syz-fuzzer [ 3717] 0 3717 7297 16 65536 0 0 syz-executor7 [ 3718] 0 3718 7297 16 69632 0 0 syz-executor1 [ 3719] 0 3719 7297 16 65536 0 0 syz-executor4 [ 3720] 0 3720 7296 2073 77824 0 0 syz-executor1 [ 3721] 0 3721 7296 2073 73728 0 0 syz-executor7 [ 3722] 0 3722 7297 17 69632 0 0 syz-executor0 [ 3723] 0 3723 7297 15 69632 0 0 syz-executor5 [ 3724] 0 3724 7296 2074 73728 0 0 syz-executor4 [ 3725] 0 3725 7297 15 65536 0 0 syz-executor6 [ 3726] 0 3726 7297 16 65536 0 0 syz-executor3 [ 3727] 0 3727 7297 15 65536 0 0 syz-executor2 [ 3728] 0 3728 7296 2075 77824 0 0 syz-executor0 [ 3729] 0 3729 7296 2073 77824 0 0 syz-executor5 [ 3730] 0 3730 7296 2072 73728 0 0 syz-executor2 [ 3731] 0 3731 7296 2073 73728 0 0 syz-executor3 [ 3732] 0 3732 7296 2072 73728 0 0 syz-executor6 [ 7346] 0 7341 7481 0 77824 0 0 syz-executor6 Out of memory: Kill process 3674 (syz-fuzzer) score 27 or sacrifice child Killed process 3718 (syz-executor1) total-vm:29188kB, anon-rss:60kB, file-rss:4kB, shmem-rss:0kB rsyslogd invoked oom-killer: gfp_mask=0x14200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=0 rsyslogd cpuset=/ mems_allowed=0 CPU: 0 PID: 3526 Comm: rsyslogd Not tainted 4.15.0-rc9+ #213 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+0x8b5/0x14a0 mm/oom_kill.c:865 out_of_memory+0x86d/0x1220 mm/oom_kill.c:1079 __alloc_pages_may_oom mm/page_alloc.c:3395 [inline] __alloc_pages_slowpath+0x1d1b/0x2d00 mm/page_alloc.c:4096 __alloc_pages_nodemask+0x9fb/0xd80 mm/page_alloc.c:4252 alloc_pages_current+0xb6/0x1e0 mm/mempolicy.c:2036 alloc_pages include/linux/gfp.h:492 [inline] __page_cache_alloc+0x334/0x500 mm/filemap.c:946 page_cache_read mm/filemap.c:2388 [inline] filemap_fault+0xefc/0x1c20 mm/filemap.c:2572