INFO: task syz-executor.3:5407 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28304 pid: 5407 ppid: 3636 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6304
schedule+0xd2/0x1f0 kernel/sched/core.c:6376
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x2af/0x360 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+0x4f9/0x29d0 kernel/exit.c:761
do_group_exit+0xd2/0x2f0 kernel/exit.c:936
get_signal+0x45a/0x2490 kernel/signal.c:2903
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:186 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:221
__syscall_exit_to_user_mode_work kernel/entry/common.c:303 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:314
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f4317556049
RSP: 002b:00007f4315ecb218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f4317668f68 RCX: 00007f4317556049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4317668f68
RBP: 00007f4317668f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4317668f6c
R13: 00007f4317b9cb1f R14: 00007f4315ecb300 R15: 0000000000022000
INFO: task syz-executor.1:5432 blocked for more than 143 seconds.
Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27928 pid: 5432 ppid: 3633 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6304
schedule+0xd2/0x1f0 kernel/sched/core.c:6376
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x2af/0x360 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+0x4f9/0x29d0 kernel/exit.c:761
do_group_exit+0xd2/0x2f0 kernel/exit.c:936
get_signal+0x45a/0x2490 kernel/signal.c:2903
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:186 [inline]
exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:221
__syscall_exit_to_user_mode_work kernel/entry/common.c:303 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:314
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f59a90fd049
RSP: 002b:00007f59a7a72218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f59a920ff68 RCX: 00007f59a90fd049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f59a920ff68
RBP: 00007f59a920ff60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f59a920ff6c
R13: 00007f59a9743b1f R14: 00007f59a7a72300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5437 Comm: iou-wrk-5432 Tainted: G W 5.17.0-syzkaller-01442-gb47d5a4f6b8d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:iterate_tty_read drivers/tty/tty_io.c:864 [inline]
RIP: 0010:tty_read+0x4e2/0x5d0 drivers/tty/tty_io.c:933
Code: 41 5e 41 5f c3 e8 ee e6 3e fd 4c 63 6c 24 38 e8 e4 e6 3e fd 48 8b 7c 24 08 e8 5a b2 01 00 eb 97 45 31 ed eb 92 44 89 7c 24 38 c9 e6 3e fd 31 ff 44 89 fe e8 3f ea 3e fd 45 85 ff 0f 85 bc fe
RSP: 0018:ffffc90003f5f838 EFLAGS: 00000286
RAX: 0000000000000000 RBX: fffffffffffffff5 RCX: 00000000fffffff5
RDX: 0000000000000000 RSI: ffff88807cd60000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff843a0a88 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90003f5f8c0 R14: ffffc90003f5f9f8 R15: 0000000000000000
FS: 00007f59a7a72700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa757c1f780 CR3: 000000001c7de000 CR4: 00000000003506f0
Call Trace:
call_read_iter include/linux/fs.h:2068 [inline]
io_iter_do_read fs/io_uring.c:3789 [inline]
io_read+0x330/0x12a0 fs/io_uring.c:3859
io_issue_sqe+0x813/0x8390 fs/io_uring.c:7172
io_wq_submit_work+0x1ed/0x590 fs/io_uring.c:7340
io_worker_handle_work+0xad6/0x1b30 fs/io-wq.c:595
io_wqe_worker+0x606/0xd40 fs/io-wq.c:642
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 41 5e pop %r14
2: 41 5f pop %r15
4: c3 retq
5: e8 ee e6 3e fd callq 0xfd3ee6f8
a: 4c 63 6c 24 38 movslq 0x38(%rsp),%r13
f: e8 e4 e6 3e fd callq 0xfd3ee6f8
14: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi
19: e8 5a b2 01 00 callq 0x1b278
1e: eb 97 jmp 0xffffffb7
20: 45 31 ed xor %r13d,%r13d
23: eb 92 jmp 0xffffffb7
25: 44 89 7c 24 38 mov %r15d,0x38(%rsp)
* 2a: e8 c9 e6 3e fd callq 0xfd3ee6f8 <-- trapping instruction
2f: 31 ff xor %edi,%edi
31: 44 89 fe mov %r15d,%esi
34: e8 3f ea 3e fd callq 0xfd3eea78
39: 45 85 ff test %r15d,%r15d
3c: 0f .byte 0xf
3d: 85 .byte 0x85
3e: bc .byte 0xbc
3f: fe .byte 0xfe