oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
INFO: task syz-executor1:18278 blocked for more than 140 seconds.
Not tainted 4.20.0-rc2+ #338
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
syz-executor1 D19208 18278 16470 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x8cf/0x21d0 kernel/sched/core.c:3472
__alloc_pages_may_oom mm/page_alloc.c:3519 [inline]
__alloc_pages_slowpath+0x2354/0x2e10 mm/page_alloc.c:4240
__alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
schedule+0xfe/0x460 kernel/sched/core.c:3516
__alloc_pages include/linux/gfp.h:473 [inline]
__alloc_pages_node include/linux/gfp.h:486 [inline]
kmem_getpages mm/slab.c:1409 [inline]
cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
fallback_alloc+0x204/0x2e0 mm/slab.c:3219
____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
slab_alloc_node mm/slab.c:3327 [inline]
kmem_cache_alloc_node_trace+0xe7/0x740 mm/slab.c:3661
__do_kmalloc_node mm/slab.c:3683 [inline]
__kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3698
__kmalloc_reserve.isra.40+0x41/0xe0 net/core/skbuff.c:137
__alloc_skb+0x155/0x770 net/core/skbuff.c:205
alloc_skb include/linux/skbuff.h:997 [inline]
_sctp_make_chunk+0x58/0x280 net/sctp/sm_make_chunk.c:1402
sctp_make_data net/sctp/sm_make_chunk.c:1434 [inline]
sctp_make_datafrag_empty+0x1d2/0x2e0 net/sctp/sm_make_chunk.c:748
sctp_datamsg_from_user+0x7ca/0x1310 net/sctp/chunk.c:275
__lock_sock+0x1fb/0x350 net/core/sock.c:2252
sctp_sendmsg_to_asoc+0x5ca/0x1a20 net/sctp/socket.c:1941
lock_sock_nested+0xfe/0x120 net/core/sock.c:2774
lock_sock include/net/sock.h:1492 [inline]
sctp_wait_for_connect+0x3ae/0x640 net/sctp/socket.c:8642
sctp_sendmsg+0x13c2/0x1da0 net/sctp/socket.c:2113
sctp_sendmsg_to_asoc+0x1627/0x1a20 net/sctp/socket.c:1967
inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798
sock_sendmsg_nosec net/socket.c:621 [inline]
sock_sendmsg+0xd5/0x120 net/socket.c:631
sock_write_iter+0x35e/0x5c0 net/socket.c:900
call_write_iter include/linux/fs.h:1857 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x6b8/0x9f0 fs/read_write.c:487
vfs_write+0x1fc/0x560 fs/read_write.c:549
ksys_write+0x101/0x260 fs/read_write.c:598
__do_sys_write fs/read_write.c:610 [inline]
__se_sys_write fs/read_write.c:607 [inline]
__x64_sys_write+0x73/0xb0 fs/read_write.c:607
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: Bad RIP value.
sctp_sendmsg+0x13c2/0x1da0 net/sctp/socket.c:2113
RSP: 002b:00007fcddd1ebc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 000000000001fef0 RSI: 0000000020000240 RDI: 000000000000000a
RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcddd1ec6d4
R13: 00000000004c58a6 R14: 00000000004d95b8 R15: 00000000ffffffff
Mem-Info:
active_anon:191260 inactive_anon:192 isolated_anon:0
active_file:10 inactive_file:40 isolated_file:0
unevictable:1 dirty:0 writeback:0 unstable:0
slab_reclaimable:17185 slab_unreclaimable:1294326
mapped:49154 shmem:246 pagetables:1860 bounce:0
free:24294 free_pcp:31 free_cma:0
Node 0 active_anon:765040kB inactive_anon:768kB active_file:40kB inactive_file:160kB unevictable:4kB isolated(anon):0kB isolated(file):0kB mapped:196616kB dirty:0kB writeback:0kB shmem:984kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 329728kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
inet_sendmsg+0x1a1/0x690 net/ipv4/af_inet.c:798
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 2818 6321 6321
Node 0 DMA32 free:43884kB min:30052kB low:37564kB high:45076kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2888776kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
lowmem_reserve[]: 0 0 3503 3503
Node 0 Normal free:37556kB min:37364kB low:46704kB high:56044kB active_anon:765040kB inactive_anon:768kB active_file:40kB inactive_file:20kB unevictable:4kB writepending:0kB present:4718592kB managed:3587816kB mlocked:0kB kernel_stack:8256kB pagetables:7440kB bounce:0kB free_pcp:428kB local_pcp:428kB free_cma:0kB
lowmem_reserve[]: 0 0 0 0
sock_sendmsg_nosec net/socket.c:621 [inline]
sock_sendmsg+0xd5/0x120 net/socket.c:631
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
__sys_sendto+0x3d7/0x670 net/socket.c:1788
Node 0 DMA32: 5*4kB (UM) 1*8kB (M) 1*16kB (M) 4*32kB (UM) 3*64kB (M) 2*128kB (M) 3*256kB (UM) 3*512kB (UM) 4*1024kB (UM) 2*2048kB (M) 8*4096kB (M) = 43884kB
Node 0 Normal: 2958*4kB (UMEH) 1639*8kB (UME) 585*16kB (UM) 89*32kB (UM) 4*64kB (U) 0*128kB 1*256kB (U) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 37664kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
280 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
342854 pages reserved
0 pages cma reserved
Unreclaimable slab info:
Name Used Total
pid_3 0KB 3KB
pid_2 221KB 372KB
TIPC 10KB 21KB
rds_connection 0KB 3KB
SCTPv6 14KB 30KB
sctp_chunk 1119198KB 1119198KB
sctp_bind_bucket 0KB 3KB
DCCPv6 17KB 29KB
DCCP 16KB 27KB
dccp_bind_bucket 0KB 4KB
bridge_fdb_cache 11KB 39KB
fib6_nodes 79KB 120KB
ip6_dst_cache 237KB 266KB
RAWv6 78KB 78KB
UDPv6 3KB 3KB
TCPv6 23KB 23KB
nf_conntrack 5KB 18KB
ashmem_area_cache 0KB 3KB
sd_ext_cdb 0KB 3KB
__do_sys_sendto net/socket.c:1800 [inline]
__se_sys_sendto net/socket.c:1796 [inline]
__x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796
do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
scsi_sense_cache 1056KB 1060KB
virtio_scsi_cmd 16KB 16KB
sgpool-128 8KB 8KB
sgpool-64 4KB 6KB
sgpool-32 2KB 7KB
sgpool-16 1KB 3KB
sgpool-8 0KB 3KB
mqueue_inode_cache 10KB 28KB
bio_post_read_ctx 14KB 15KB
entry_SYSCALL_64_after_hwframe+0x49/0xbe
bio-2 14KB 15KB
RIP: 0033:0x457569
jfs_mp 7KB 7KB
Code: Bad RIP value.
nfs_commit_data 3KB 7KB
RSP: 002b:00007fcddd22dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
nfs_write_data 32KB 32KB
ext4_system_zone 0KB 3KB
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457569
kioctx 2KB 14KB
RDX: 0000000000000001 RSI: 0000000020000000 RDI: 000000000000000a
RBP: 000000000072bf00 R08: 000000002005ffe4 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcddd22e6d4
aio_kiocb 0KB 4KB
bio-1 1KB 3KB
fasync_cache 0KB 4KB
R13: 00000000004c3c1d R14: 00000000004d5e98 R15: 00000000ffffffff
Showing all locks held in the system:
pid_namespace 2KB 11KB
posix_timers_cache 0KB 3KB
rpc_buffers 17KB 19KB
1 lock held by khungtaskd/1019:
rpc_tasks 2KB 3KB
#0: 000000008a06fb28 (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379
UNIX 18KB 21KB
2 locks held by udevd/3716:
2 locks held by rsyslogd/5941:
2 locks held by getty/6031:
#0: 0000000098bfc807 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 0000000037cb72d1 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
tcp_bind_bucket 21KB 24KB
2 locks held by getty/6032:
#0: 000000004f57dedc (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 00000000c1865483 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/6033:
#0:
inet_peer_cache 0KB 4KB
000000008268227d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
ip_fib_trie 11KB 19KB
#1: 00000000130dceb9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
2 locks held by getty/6034:
#0: 00000000d32406eb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
#1: 0000000062ab0c05 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
ip_fib_alias 53KB 83KB
2 locks held by getty/6035:
#0: 00000000054d84cc (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
ip_dst_cache 114KB 124KB
#1: 0000000058bba832 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
RAW 46KB 57KB
UDP 17KB 32KB
TCP 8KB 11KB
hugetlbfs_inode_cache 2KB 7KB
2 locks held by getty/6036:
fscache_cookie_jar 1KB 11KB
eventpoll_pwq 3KB 23KB
#0: 0000000095e0c705 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
eventpoll_epi 5KB 23KB
inotify_inode_mark 5KB 23KB
request_queue 153KB 153KB
blkdev_requests 1KB 3KB
blkdev_ioc 158KB 277KB
#1: 00000000bb44b75a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
bio-0 3810KB 4755KB
biovec-max 17275KB 17275KB
2 locks held by getty/6037:
biovec-64 252KB 252KB
#0: 0000000070955de5 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353
biovec-16 90KB 90KB
bio_integrity_payload 1KB 3KB
khugepaged_mm_slot 29KB 58KB
user_namespace 0KB 3KB
#1: 0000000037dab48e (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154
dmaengine-unmap-256 2KB 6KB
dmaengine-unmap-128 1KB 3KB
dmaengine-unmap-16 0KB 4KB
dmaengine-unmap-2 0KB 3KB
2 locks held by syz-fuzzer/6056:
skbuff_fclone_cache 476KB 791KB
skbuff_head_cache 1121013KB 1121013KB
configfs_dir_cache 0KB 4KB
file_lock_cache 0KB 3KB
file_lock_ctx 1KB 3KB
fsnotify_mark_connector 3KB 19KB
net_namespace 60KB 60KB
shmem_inode_cache 4484KB 4581KB
task_delay_info 115KB 203KB
4 locks held by syz-fuzzer/6061:
taskstats 207KB 382KB
proc_dir_entry 669KB 746KB
pde_opener 8KB 11KB
6 locks held by syz-executor1/18292:
seq_file 111KB 141KB
sigqueue 24KB 35KB
=============================================
kernfs_node_cache 12017KB 12048KB
NMI backtrace for cpu 0
mnt_cache 88KB 116KB
CPU: 0 PID: 1019 Comm: khungtaskd Not tainted 4.20.0-rc2+ #338
filp 2373KB 2531KB
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
names_cache 80108KB 80146KB
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x244/0x39d lib/dump_stack.c:113
iint_cache 82KB 87KB
nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62
key_jar 13KB 22KB
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
watchdog+0xb51/0x1060 kernel/hung_task.c:289
uts_namespace 2KB 11KB
nsproxy 100KB 102KB
vm_area_struct 4369KB 4613KB
mm_struct 1010KB 1053KB
fs_cache 99KB 116KB
kthread+0x35a/0x440 kernel/kthread.c:246
files_cache 374KB 397KB
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
signal_cache 828KB 898KB
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.708 msecs
NMI backtrace for cpu 1
CPU: 1 PID: 18292 Comm: syz-executor1 Not tainted 4.20.0-rc2+ #338
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:debug_lockdep_rcu_enabled+0x53/0x90 kernel/rcu/update.c:248
Code: 38 d0 7c 04 84 d2 75 4c 8b 15 51 7f ad 08 85 d2 74 3e 48 c7 c7 b4 61 16 8a 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1c 8b
RSP: 0000:ffff8881daf07298 EFLAGS: 00000807
RAX: dffffc0000000000 RBX: 1ffff1103b5e0e5a RCX: 0000000000000001
RDX: 1ffffffff142cc36 RSI: 0000000000000001 RDI: ffffffff8a1661b4
RBP: ffff8881daf07298 R08: 0000000000000000 R09: ffffed103b5e0e6d
R10: ffffed103b5e0e6d R11: 0000000000000003 R12: ffff8881cd924600
R13: ffff8881daf073b0 R14: ffff8881da8177c0 R15: 0000000000000000
FS: 00007fcddd1ec700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004044ad CR3: 00000001b6305000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x689/0xa00 kernel/locking/lockdep.c:3862
__raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock+0x1a/0x50 kernel/locking/spinlock.c:176
spin_unlock include/linux/spinlock.h:369 [inline]
__queue_work+0xc01/0x1440 kernel/workqueue.c:1413
queue_work_on+0x19a/0x1e0 kernel/workqueue.c:1486
queue_work include/linux/workqueue.h:512 [inline]
schedule_work include/linux/workqueue.h:570 [inline]
kernfs_notify+0x130/0x170 fs/kernfs/file.c:946
cgroup_file_notify+0x1d2/0x2f0 kernel/cgroup/cgroup.c:3860
cgroup_file_notify_timer+0x16/0x20 kernel/cgroup/cgroup.c:3570
call_timer_fn+0x272/0x920 kernel/time/timer.c:1326
expire_timers kernel/time/timer.c:1363 [inline]
__run_timers+0x7e5/0xc70 kernel/time/timer.c:1682
run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1695
__do_softirq+0x308/0xb7e kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x17f/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:761 [inline]
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1688 [inline]
RIP: 0010:vprintk_emit+0x87d/0x990 kernel/printk/printk.c:1921
Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 de 00 00 00 48 83 3d 63 3b ec 07 00 74 34 e8 cc c7 19 00 48 8b bd 90 fe ff ff 57 9d <0f> 1f 44 00 00 e9 aa fe ff ff e8 b4 c7 19 00 0f 0b e8 ad c7 19 00
RSP: 0000:ffff88817b84dd88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: 1ffff1102f709bb7 RCX: ffffc90009fe2000
RDX: 0000000000040000 RSI: ffffffff8165c014 RDI: 0000000000000246
RBP: ffff88817b84df00 R08: ffff8881cd924ef0 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8881cd924600 R12: 0000000000000200
R13: 0000000000000000 R14: ffffed102f709bcb R15: ffff88817b84ded8
vprintk_default+0x28/0x30 kernel/printk/printk.c:1964
vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398
printk+0xa7/0xcf kernel/printk/printk.c:1997
dump_unreclaimable_slab.cold.22+0xd8/0xe6 mm/slab_common.c:1392
dump_header+0x7cc/0xf72 mm/oom_kill.c:447
oom_kill_process.cold.27+0x10/0x903 mm/oom_kill.c:953
out_of_memory+0xa84/0x1430 mm/oom_kill.c:1120
__alloc_pages_may_oom mm/page_alloc.c:3519 [inline]
__alloc_pages_slowpath+0x2354/0x2e10 mm/page_alloc.c:4240
__alloc_pages_nodemask+0xa80/0xde0 mm/page_alloc.c:4395
__alloc_pages include/linux/gfp.h:473 [inline]
__alloc_pages_node include/linux/gfp.h:486 [inline]
kmem_getpages mm/slab.c:1409 [inline]
cache_grow_begin+0xa5/0x8c0 mm/slab.c:2677
fallback_alloc+0x204/0x2e0 mm/slab.c:3219
____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
slab_alloc_node mm/slab.c:3327 [inline]
kmem_cache_alloc_node_trace+0xe7/0x740 mm/slab.c:3661
__do_kmalloc_node mm/slab.c:3683 [inline]
__kmalloc_node_track_caller+0x3c/0x70 mm/slab.c:3698
__kmalloc_reserve.isra.40+0x41/0xe0 net/core/skbuff.c:137
__alloc_skb+0x155/0x770 net/core/skbuff.c:205
? _copy_to_iter_mcsafe+0x168
Lost 72 message(s)!