INFO: task syz-executor.2:25795 blocked for more than 143 seconds.
Not tainted 5.18.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27872 pid:25795 ppid: 3622 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5073 [inline]
__schedule+0xa9a/0x4cc0 kernel/sched/core.c:6388
schedule+0xd2/0x1f0 kernel/sched/core.c:6460
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1860
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:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10381 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10451
io_uring_files_cancel include/linux/io_uring.h:18 [inline]
do_exit+0x4f9/0x2a00 kernel/exit.c:750
do_group_exit+0xd2/0x2f0 kernel/exit.c:925
get_signal+0x22df/0x24c0 kernel/signal.c:2864
arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:867
exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:294
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f07ac8890e9
RSP: 002b:00007f07ada59218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f07ac99bf68 RCX: 00007f07ac8890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f07ac99bf68
RBP: 00007f07ac99bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f07ac99bf6c
R13: 00007ffc7e2cceef R14: 00007f07ada59300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd7f5e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by getty/3275:
#0: ffff88814c2b7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90001bf92e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
3 locks held by kworker/u4:6/3752:
#0: ffff8880b9d3a098 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:554
#1: ffff8880b9d27888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3e7/0x4e0 kernel/sched/psi.c:889
#2: ffff88802c2e8dc0 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1039 [inline]
#2: ffff88802c2e8dc0 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x90/0xe80 net/mac80211/ibss.c:1681
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc4-syzkaller #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:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25842 Comm: iou-wrk-25795 Not tainted 5.18.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:import_single_range+0xf4/0x2e0 lib/iov_iter.c:2026
Code: 83 fd 44 89 e0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 d1 a1 83 fd 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 ab 01 00 00 49 8d 7c 24 08 4d 89 2c 24 48 b8 00 00 00 00 00
RSP: 0018:ffffc90001c7f810 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc90001c7f9e8 RCX: 0000000000000000
RDX: 1ffff9200038ff45 RSI: ffffffff83f4c31f RDI: 0000000000000003
RBP: 0000000000000011 R08: 0000000020000040 R09: 0000000000000000
R10: ffffffff83f4c2fc R11: 0000000000000001 R12: ffffc90001c7fa28
R13: 0000000020000040 R14: 0000000000000000 R15: 00007fffffffefef
FS: 00007f07ada59700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00a1086c8 CR3: 000000006fc8c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__io_import_iovec+0x2c6/0x1720 fs/io_uring.c:3488
io_import_iovec fs/io_uring.c:3514 [inline]
io_read+0xb65/0x12b0 fs/io_uring.c:3809
io_issue_sqe+0x768/0x8a00 fs/io_uring.c:7133
io_wq_submit_work+0x22a/0x620 fs/io_uring.c:7308
io_worker_handle_work+0xb1c/0x1ab0 fs/io-wq.c:597
io_wqe_worker+0x637/0xdb0 fs/io-wq.c:644
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
----------------
Code disassembly (best guess):
0: 83 fd 44 cmp $0x44,%ebp
3: 89 e0 mov %esp,%eax
5: 5b pop %rbx
6: 5d pop %rbp
7: 41 5c pop %r12
9: 41 5d pop %r13
b: 41 5e pop %r14
d: 41 5f pop %r15
f: c3 retq
10: e8 d1 a1 83 fd callq 0xfd83a1e6
15: 4c 89 e2 mov %r12,%rdx
18: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1f: fc ff df
22: 48 c1 ea 03 shr $0x3,%rdx
26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
* 2a: 0f 85 ab 01 00 00 jne 0x1db <-- trapping instruction
30: 49 8d 7c 24 08 lea 0x8(%r12),%rdi
35: 4d 89 2c 24 mov %r13,(%r12)
39: 48 rex.W
3a: b8 00 00 00 00 mov $0x0,%eax