INFO: task syz-executor142:6768 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-executor142 state:D stack:25384 pid:6768 tgid:6766 ppid:5873 task_flags:0x400548 flags:0x00024002
Call Trace:
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: 0033:0x7f6ca59011d9
RSP: 002b:00007f6ca5895178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f6ca5988338 RCX: 00007f6ca59011d9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f6ca5988338
RBP: 00007f6ca5988330 R08: 00007f6ca58956c0 R09: 00007f6ca58956c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6ca598833c
R13: 000000000000006e R14: 00007ffd2fee3740 R15: 00007ffd2fee3828
INFO: task syz-executor142:6816 blocked for more than 145 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-executor142 state:D stack:26992 pid:6816 tgid:6815 ppid:5870 task_flags:0x400548 flags:0x00024002
Call Trace:
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: 0033:0x7f6ca59011d9
RSP: 002b:00007f6ca58b6178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007f6ca5988328 RCX: 00007f6ca59011d9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f6ca598832c
RBP: 00007f6ca5988320 R08: 0000000000000000 R09: 00007f6ca58b66c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6ca598832c
R13: 0000000000000000 R14: 00007ffd2fee3740 R15: 00007ffd2fee3828
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 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:
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
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5865 Comm: strace-static-x 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:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:139 [inline]
RIP: 0010:wrmsrq arch/x86/include/asm/msr.h:199 [inline]
RIP: 0010:native_apic_msr_write+0x39/0x50 arch/x86/include/asm/apic.h:212
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 cc cc cc cc cc f3 0f 1e fa 89 f6 31 d2 e9 22 8b 90 03 66
RSP: 0018:ffffc90000007e50 EFLAGS: 00000046
RAX: 000000000005451b RBX: ffff8880b8623900 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 000000000005451b RDI: 0000000000000838
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000003 R11: ffffffff81703490 R12: 00000000100058eb
R13: dffffc0000000000 R14: 000000000005451b R15: 0000000000000020
FS: 00000000018953c0(0000) GS:ffff888125c0f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000a07000 CR3: 00000000740b6000 CR4: 00000000003526f0
Call Trace:
apic_write arch/x86/include/asm/apic.h:405 [inline]
lapic_next_event+0x11/0x20 arch/x86/kernel/apic/apic.c:416
clockevents_program_event+0x1cf/0x360 kernel/time/clockevents.c:334
hrtimer_interrupt+0x620/0xaa0 kernel/time/hrtimer.c:1900
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
__sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 9a 2b 1f f6 48 89 df e8 f2 c2 1f f6 e8 fd 0f 49 f6 fb bf 01 00 00 00 42 bc 11 f6 65 8b 05 5b cf 22 07 85 c0 74 07 5b e9 81 4c 00 00
RSP: 0018:ffffc90003d6fab0 EFLAGS: 00000282
RAX: 68658deb387fcb00 RBX: ffff88801cfd8940 RCX: 68658deb387fcb00
RDX: 0000000000000000 RSI: ffffffff8be34be0 RDI: 0000000000000001
RBP: ffffc90003d6fde0 R08: ffffffff8fa3b137 R09: 1ffffffff1f47626
R10: dffffc0000000000 R11: fffffbfff1f47627 R12: ffff88802fdada00
R13: 1ffff11005fb5b46 R14: ffff88802fdae328 R15: dffffc0000000000
spin_unlock_irq include/linux/spinlock.h:401 [inline]
ptrace_resume kernel/ptrace.c:866 [inline]
ptrace_request+0xff6/0x2260 kernel/ptrace.c:1324
arch_ptrace+0x289/0x410 arch/x86/kernel/ptrace.c:848
__do_sys_ptrace kernel/ptrace.c:1414 [inline]
__se_sys_ptrace+0x150/0x3a0 kernel/ptrace.c:1387
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x4e987a
Code: 70 41 83 f8 03 c7 44 24 10 08 00 00 00 48 89 44 24 18 48 8d 44 24 30 8b 70 08 4c 0f 43 d1 48 89 44 24 20 b8 65 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3e 48 85 c0 78 06 41 83 f8 02 76 1b 48 8b 54
RSP: 002b:00007fffe9646b80 EFLAGS: 00000206 ORIG_RAX: 0000000000000065
RAX: ffffffffffffffda RBX: 0000000001895368 RCX: 00000000004e987a
RDX: 0000000000000000 RSI: 0000000000001e30 RDI: 0000000000000018
RBP: 0000000000000018 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 000000000189de80
R13: 0000000000000000 R14: 0000000001897ca0 R15: 000000000063f160