INFO: task syz-executor.5:9942 blocked for more than 143 seconds.
Not tainted 5.18.0-rc2-syzkaller-00050-ga19944809fe9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27416 pid: 9942 ppid: 3645 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: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:1266 [inline]
io_wq_put_and_exit+0x4d6/0xe40 fs/io-wq.c:1301
io_uring_clean_tctx fs/io_uring.c:10368 [inline]
io_uring_cancel_generic+0x538/0x5bc fs/io_uring.c:10438
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: 0033:0x7f47b46890e9
RSP: 002b:00007f47b58c5218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f47b479bf68 RCX: 00007f47b46890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f47b479bf68
RBP: 00007f47b479bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f47b479bf6c
R13: 00007f47b4ccfb1f R14: 00007f47b58c5300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd81de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6467
2 locks held by kworker/u4:2/45:
2 locks held by getty/3272:
#0: ffff88814caa8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e562e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
2 locks held by kworker/1:8/3743:
#0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888010c66538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc9000503fda8 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
1 lock held by iou-wrk-9942/9943:
2 locks held by dhcpcd/10005:
#0: ffff888018de6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1682 [inline]
#0: ffff888018de6130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2f/0xdc0 net/packet/af_packet.c:3179
#1: ffffffff8bd8bba0 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#1: ffffffff8bd8bba0 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4fa/0x620 kernel/rcu/tree_exp.h:841
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.18.0-rc2-syzkaller-00050-ga19944809fe9 #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: 9943 Comm: iou-wrk-9942 Not tainted 5.18.0-rc2-syzkaller-00050-ga19944809fe9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__this_cpu_preempt_check+0xc/0x20 lib/smp_processor_id.c:67
Code: 44 00 00 48 c7 c6 60 b8 26 8a 48 c7 c7 a0 b8 26 8a e9 78 fe ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 0f 1f 44 00 00 48 89 ee <5d> 48 c7 c7 e0 b8 26 8a e9 57 fe ff ff cc cc cc cc cc cc cc eb 1e
RSP: 0018:ffffc90003aff768 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff89cc5ce0 RDI: ffffffff89cc5ce0
RBP: ffffffff89cc5ce0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8448d90d R11: 0000000000000000 R12: ffff8880799ed700
R13: 00000000ffffffff R14: 00000000ffffffff R15: ffff8880670ef000
FS: 00007f47b58c5700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056403d3ab018 CR3: 00000000758b2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_inc kernel/locking/lockdep.c:431 [inline]
lock_is_held_type+0x63/0x140 kernel/locking/lockdep.c:5683
lock_is_held include/linux/lockdep.h:283 [inline]
__might_resched+0x3a/0x2c0 kernel/sched/core.c:9701
ldsem_down_read+0x1f/0x40 drivers/tty/tty_ldsem.c:339
tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
tty_read+0x1a2/0x5d0 drivers/tty/tty_io.c:928
call_read_iter include/linux/fs.h:2044 [inline]
io_iter_do_read fs/io_uring.c:3736 [inline]
io_read+0x351/0x12a0 fs/io_uring.c:3852
io_issue_sqe+0x75d/0x90c0 fs/io_uring.c:7122
io_wq_submit_work+0x22a/0x630 fs/io_uring.c:7295
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: 44 00 00 add %r8b,(%rax)
3: 48 c7 c6 60 b8 26 8a mov $0xffffffff8a26b860,%rsi
a: 48 c7 c7 a0 b8 26 8a mov $0xffffffff8a26b8a0,%rdi
11: e9 78 fe ff ff jmpq 0xfffffe8e
16: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
1d: 00
1e: 55 push %rbp
1f: 48 89 fd mov %rdi,%rbp
22: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
27: 48 89 ee mov %rbp,%rsi
* 2a: 5d pop %rbp <-- trapping instruction
2b: 48 c7 c7 e0 b8 26 8a mov $0xffffffff8a26b8e0,%rdi
32: e9 57 fe ff ff jmpq 0xfffffe8e
37: cc int3
38: cc int3
39: cc int3
3a: cc int3
3b: cc int3
3c: cc int3
3d: cc int3
3e: eb 1e jmp 0x5e