INFO: task syz-executor.5:8817 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-02237-g1bc191051dca #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27904 pid: 8817 ppid: 3644 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6382
schedule+0xd2/0x1f0 kernel/sched/core.c:6454
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x373/0x530 kernel/sched/completion.c:106
io_wq_exit_workers fs/io-wq.c:1264 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1299
io_uring_clean_tctx fs/io_uring.c:10512 [inline]
io_uring_cancel_generic+0x60b/0x695 fs/io_uring.c:10582
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a30 kernel/exit.c:761
do_group_exit+0xd2/0x2f0 kernel/exit.c:936
get_signal+0x4b0/0x28c0 kernel/signal.c:2903
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:149 [inline]
exit_to_user_mode_loop kernel/entry/common.c:187 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:222
__syscall_exit_to_user_mode_work kernel/entry/common.c:304 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:315
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f6d43289049
RSP: 002b:00007f6d4432c218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f6d4339bf68 RCX: 00007f6d43289049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f6d4339bf68
RBP: 00007f6d4339bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6d4339bf6c
R13: 00007f6d438cfb1f R14: 00007f6d4432c300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-02237-g1bc191051dca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2955 Comm: klogd Tainted: G W 5.17.0-syzkaller-02237-g1bc191051dca #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__slab_free+0x90/0x350 mm/slub.c:3374
Code: 66 85 db 89 04 24 66 89 5c 24 48 74 05 45 84 db 74 06 80 3c 24 00 74 7f 41 8b 7e 08 4d 89 e0 4c 89 ea 48 89 ee 4c 8b 4c 24 48 5b d4 ff ff 84 c0 74 a5 44 0f b6 2c 24 45 84 ed 0f 84 24 01 00
RSP: 0018:ffffc90002b2f7f8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000080040001 RCX: 0000000080040002
RDX: ffff888032622000 RSI: ffffea0000c98800 RDI: 0000000048000000
RBP: ffffea0000c98800 R08: ffff888032624000 R09: 0000000080040001
R10: ffffffff813579aa R11: 0000000000000000 R12: ffff888032624000
R13: ffff888032622000 R14: ffff888010c42140 R15: ffff888032624000
FS: 00007fe6502c6800(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffceb4d3048 CR3: 000000001bfb7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
qlink_free mm/kasan/quarantine.c:157 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:446
kasan_slab_alloc include/linux/kasan.h:239 [inline]
slab_post_alloc_hook mm/slab.h:749 [inline]
slab_alloc_node mm/slub.c:3230 [inline]
kmem_cache_alloc_node+0x255/0x3f0 mm/slub.c:3280
__alloc_skb+0x215/0x340 net/core/skbuff.c:414
alloc_skb include/linux/skbuff.h:1158 [inline]
alloc_skb_with_frags+0x93/0x730 net/core/skbuff.c:5956
sock_alloc_send_pskb+0x793/0x920 net/core/sock.c:2586
unix_dgram_sendmsg+0x414/0x1a10 net/unix/af_unix.c:1896
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
__sys_sendto+0x21c/0x320 net/socket.c:2040
__do_sys_sendto net/socket.c:2052 [inline]
__se_sys_sendto net/socket.c:2048 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2048
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fe6504620ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007ffef8495c98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe6504620ac
RDX: 000000000000003e RSI: 000055f48a5d1dd0 RDI: 0000000000000003
RBP: 000055f48a5ca910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007fe6505dd77d R15: 00007ffef8495da8
----------------
Code disassembly (best guess):
0: 66 85 db test %bx,%bx
3: 89 04 24 mov %eax,(%rsp)
6: 66 89 5c 24 48 mov %bx,0x48(%rsp)
b: 74 05 je 0x12
d: 45 84 db test %r11b,%r11b
10: 74 06 je 0x18
12: 80 3c 24 00 cmpb $0x0,(%rsp)
16: 74 7f je 0x97
18: 41 8b 7e 08 mov 0x8(%r14),%edi
1c: 4d 89 e0 mov %r12,%r8
1f: 4c 89 ea mov %r13,%rdx
22: 48 89 ee mov %rbp,%rsi
25: 4c 8b 4c 24 48 mov 0x48(%rsp),%r9
* 2a: e8 5b d4 ff ff callq 0xffffd48a <-- trapping instruction
2f: 84 c0 test %al,%al
31: 74 a5 je 0xffffffd8
33: 44 0f b6 2c 24 movzbl (%rsp),%r13d
38: 45 84 ed test %r13b,%r13b
3b: 0f .byte 0xf
3c: 84 24 01 test %ah,(%rcx,%rax,1)