INFO: task syz.2.356:1404 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.356       state:D stack:0     pid:1404  tgid:1397  ppid:291    flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x1322/0x1df0 kernel/sched/core.c:7791
 __schedule_loop kernel/sched/core.c:7872 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7887
 schedule_timeout+0xb2/0x3a0 kernel/time/timer.c:2595
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common+0x359/0x630 kernel/sched/completion.c:127
 wait_for_completion_state+0x19/0x40 kernel/sched/completion.c:264
 coredump_wait fs/coredump.c:419 [inline]
 do_coredump+0x7cf/0x2bd0 fs/coredump.c:581
 get_signal+0x11fd/0x14f0 kernel/signal.c:2918
 arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4e/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_invalid_op+0x42/0x60 arch/x86/kernel/traps.c:354
 asm_exc_invalid_op+0x1f/0x30 arch/x86/include/asm/idtentry.h:621
RIP: 0033:0x200000000000
RSP: 002b:00007f22dec72a78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007f22ddfe6090 RCX: 00007f22ddd8efc9
RDX: 00007f22dec72a80 RSI: 00007f22dec72bb0 RDI: 000000000000000d
RBP: 00007f22dde11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f22ddfe6128 R14: 00007f22ddfe6090 R15: 00007ffd63def268
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 266cda178c92c5b558a82471c37c826ff232bf8e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x10c/0x190 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2bf/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xd8f/0xed0 kernel/hung_task.c:423
 kthread+0x2ca/0x370 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 283 Comm: syz-executor Not tainted syzkaller #0 266cda178c92c5b558a82471c37c826ff232bf8e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:hrtimer_suitable_target kernel/time/hrtimer.c:209 [inline]
RIP: 0010:switch_hrtimer_base kernel/time/hrtimer.c:294 [inline]
RIP: 0010:__hrtimer_start_range_ns kernel/time/hrtimer.c:1280 [inline]
RIP: 0010:hrtimer_start_range_ns+0xb59/0x2190 kernel/time/hrtimer.c:1347
Code: 45 98 44 0f b6 30 44 89 f6 83 e6 10 31 ff e8 ae 51 10 00 41 83 e6 10 75 7a e8 a3 4e 10 00 4d 89 ef 48 8b 5d 90 e9 de 02 00 00 <4c> 3b a5 70 ff ff ff 0f 84 2d 01 00 00 49 bc 00 00 00 00 00 fc ff
RSP: 0018:ffffc900011cfad8 EFLAGS: 00000046
RAX: ffffffff8175aef0 RBX: ffffc900011cfd30 RCX: ffff88812cabcc00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009
RBP: ffffc900011cfbb0 R08: 0000000000000003 R09: 0000000000000004
R10: 0000000000000000 R11: ffffffff813be5e0 R12: ffff8881f6e2cec0
R13: ffff8881f6e2cf00 R14: 1ffff92000239fa6 R15: 0000000000000000
FS:  000055555bf7c500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc1543bff8 CR3: 0000000106266000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 hrtimer_start_expires include/linux/hrtimer.h:290 [inline]
 hrtimer_sleeper_start_expires kernel/time/hrtimer.c:2015 [inline]
 do_nanosleep+0x136/0x590 kernel/time/hrtimer.c:2091
 hrtimer_nanosleep+0x13e/0x320 kernel/time/hrtimer.c:2142
 common_nsleep+0x93/0xb0 kernel/time/posix-timers.c:1373
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1419 [inline]
 __se_sys_clock_nanosleep+0x2fd/0x390 kernel/time/posix-timers.c:1396
 __x64_sys_clock_nanosleep+0x9f/0xc0 kernel/time/posix-timers.c:1396
 x64_sys_call+0x2554/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:231
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f4ca75c1843
Code: 1f 84 00 00 00 00 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d 1e 6d 1f 00 00 74 14 b8 e6 00 00 00 0f 05 <f7> d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007fff5ee0c4b8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4ca75c1843
RDX: 00007fff5ee0c4d0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000025b10877 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff5ee0c920
R13: 0000000000000004 R14: 00007fff5ee0c50c R15: 00007fff5ee0c5a0
 </TASK>