INFO: task syz-executor389:5959 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc1-next-20250814-syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor389 state:D stack:25384 pid:5959  tgid:5952  ppid:5868   task_flags:0x400548 flags:0x00024002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7058
 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common kernel/sched/completion.c:121 [inline]
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:153
 io_wq_exit_workers io_uring/io-wq.c:1327 [inline]
 io_wq_put_and_exit+0x316/0x650 io_uring/io-wq.c:1355
 io_uring_clean_tctx+0x11f/0x1a0 io_uring/tctx.c:203
 io_uring_cancel_generic+0x6ca/0x7d0 io_uring/io_uring.c:3272
 io_uring_files_cancel include/linux/io_uring.h:19 [inline]
 do_exit+0x345/0x2300 kernel/exit.c:907
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
 get_signal+0x1286/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7dc575d419
RSP: 002b:00007f7dc56f2208 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000001000 RBX: 00007f7dc57e4338 RCX: 00007f7dc575d419
RDX: 000000000000079c RSI: 00000000000847ba RDI: 0000000000000003
RBP: 00007f7dc57e4330 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000000e R11: 0000000000000246 R12: 00007f7dc57b1074
R13: 0000000000000003 R14: 0000200000000200 R15: 0000200000000640
 </TASK>
INFO: task syz-executor389:6411 blocked for more than 148 seconds.
      Not tainted 6.17.0-rc1-next-20250814-syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor389 state:D stack:25384 pid:6411  tgid:6409  ppid:5865   task_flags:0x400548 flags:0x00024002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7058
 schedule_timeout+0x9a/0x270 kernel/time/sleep_timeout.c:75
 do_wait_for_common kernel/sched/completion.c:100 [inline]
 __wait_for_common kernel/sched/completion.c:121 [inline]
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion+0x2bf/0x5d0 kernel/sched/completion.c:153
 io_wq_exit_workers io_uring/io-wq.c:1327 [inline]
 io_wq_put_and_exit+0x316/0x650 io_uring/io-wq.c:1355
 io_uring_clean_tctx+0x11f/0x1a0 io_uring/tctx.c:203
 io_uring_cancel_generic+0x6ca/0x7d0 io_uring/io_uring.c:3272
 io_uring_files_cancel include/linux/io_uring.h:19 [inline]
 do_exit+0x345/0x2300 kernel/exit.c:907
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
 get_signal+0x1286/0x1340 kernel/signal.c:3034
 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7dc575d419
RSP: 002b:00007f7dc56f2218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f7dc57e4338 RCX: 00007f7dc575d419
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f7dc57e433c
RBP: 00007f7dc57e4330 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7dc57b1074
R13: 0000000000000003 R14: 0000200000000200 R15: 0000200000000640
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.17.0-rc1-next-20250814-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:332 [inline]
 watchdog+0xf60/0xfa0 kernel/hung_task.c:495
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6418 Comm: iou-wrk-6411 Not tainted 6.17.0-rc1-next-20250814-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__io_wq_is_hashed io_uring/io-wq.h:54 [inline]
RIP: 0010:io_wq_hash_defer io_uring/io-wq.c:439 [inline]
RIP: 0010:io_wq_dec_running+0x25c/0x3e0 io_uring/io-wq.c:468