[13207] 0 13207 17634 8236 25 4 0 0 syz-executor0
[13220] 0 13220 17634 12691 32 3 0 0 syz-executor1
[13222] 0 13222 17634 12691 31 3 0 0 syz-executor2
[13245] 0 13245 17601 8234 24 3 0 0 syz-executor0
INFO: task syz-executor0:13721 blocked for more than 140 seconds.
Not tainted 4.14.91+ #3
[13248] 0 13248 17634 8236 24 3 0 0 syz-executor0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor0 D30384 13721 1839 0x00000004
[13252] 0 13252 17634 12691 32 3 0 0 syz-executor1
[13263] 0 13263 17634 8237 25 4 0 0 syz-executor0
[13350] 0 13350 17634 12691 32 3 0 0 syz-executor1
[13375] 0 13375 17634 8234 25 4 0 0 syz-executor2
Call Trace:
[13414] 0 13414 17634 12691 32 3 0 0 syz-executor1
[13473] 0 13473 17634 12691 32 3 0 0 syz-executor1
schedule+0x92/0x1c0 kernel/sched/core.c:3490
__lock_sock+0x12b/0x220 net/core/sock.c:2237
[13538] 0 13538 17634 12691 32 3 0 0 syz-executor1
[13555] 0 13555 17700 8240 26 4 0 0 syz-executor0
lock_sock_nested+0xe1/0x100 net/core/sock.c:2758
lock_sock include/net/sock.h:1452 [inline]
packet_setsockopt+0xed5/0x2830 net/packet/af_packet.c:3859
[13593] 0 13593 17634 12691 32 3 0 0 syz-executor1
[13611] 0 13611 17634 8236 26 4 0 0 syz-executor0
[13646] 0 13646 17634 12691 32 3 0 0 syz-executor1
[13701] 0 13701 17634 12691 32 3 0 0 syz-executor1
[13713] 0 13709 17700 8239 25 4 0 0 syz-executor0
[13761] 0 13761 3649 42 13 3 0 0 getty
Showing all locks held in the system:
[13762] 0 13762 3649 43 13 3 0 0 getty
1 lock held by khungtaskd/23:
#0: (tasklist_lock){.+.+}, at: [<ffffffff8ebff97c>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541
2 locks held by getty/1757:
#0: (&tty->ldisc_sem){++++}, at: [<ffffffff8f736982>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:275
#1: (&ldata->atomic_read_lock){+.+.}, at: [<ffffffff8f731da7>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156
2 locks held by syz-fuzzer/1782:
#0: (&mm->mmap_sem){++++}, at: [<ffffffff8eab4391>] __do_page_fault+0x271/0xb80 arch/x86/mm/fault.c:1354
#1: (&ei->i_mmap_sem){++++}, at: [<ffffffff8f15dfbc>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6178
1 lock held by syz-executor2/12576:
#0: (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff8ef6bea1>] prepare_bprm_creds+0x51/0x110 fs/exec.c:1389
1 lock held by syz-executor2/12593:
#0: (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff8ef6bea1>] prepare_bprm_creds+0x51/0x110 fs/exec.c:1389
1 lock held by syz-executor2/12610:
#0: (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff8ef6bea1>] prepare_bprm_creds+0x51/0x110 fs/exec.c:1389
2 locks held by getty/13762:
#0: (&mm->mmap_sem){++++}, at: [<ffffffff8eab4391>] __do_page_fault+0x271/0xb80 arch/x86/mm/fault.c:1354
#1: (&ei->i_mmap_sem){++++}, at: [<ffffffff8f15dfbc>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6178
=============================================
[13763] 0 13763 3649 42 13 3 0 0 getty
[13764] 0 13764 3649 41 13 3 0 0 getty
[13765] 0 13765 3649 42 12 3 0 0 getty
[13767] 0 13767 3649 37 13 3 0 0 getty
Out of memory: Kill process 10976 (syz-executor4) score 1007 or sacrifice child
Killed process 10976 (syz-executor4) total-vm:70536kB, anon-rss:18128kB, file-rss:32768kB, shmem-rss:0kB
oom_reaper: reaped process 10976 (syz-executor4), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
NMI backtrace for cpu 0
CPU: 0 PID: 23 Comm: khungtaskd Not tainted 4.14.91+ #3
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x10e lib/dump_stack.c:53
nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 13765 Comm: getty Not tainted 4.14.91+ #3
task: ffff8881d1de4680 task.stack: ffff888188c10000
RIP: 0010:__lock_acquire+0x801/0x3fa0 kernel/locking/lockdep.c:3499
RSP: 0000:ffff888188c16ed0 EFLAGS: 00000802
RAX: dffffc0000000000 RBX: 000000004d811390 RCX: 000000006fa6a8b9
RDX: 1ffff1103a3bc9d5 RSI: ffff8881d1de4f00 RDI: 0000000000000000
RBP: ffff888188c17088 R08: 0000000000000000 R09: 0000000000020025
R10: ffff8881d1de4f00 R11: 0000000000000000 R12: ffff8881d1de4f18
R13: 000000000cb0e7f7 R14: b7b791bd5a31fb87 R15: ffff8881d1de4680
FS: 00007f9f36add700(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f835eb3f580 CR3: 0000000189100005 CR4: 00000000001606a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
Code: 54 24 60 48 c1 ea 03 80 3c 02 00 0f 85 f6 26 00 00 48 8b 54 24 70 4d 89 b7 20 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e bd 26 00 00 41 8b 87 28 08