INFO: task syz.2.18:520 blocked for more than 122 seconds.
Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.18 state:D stack:0 pid:520 tgid:516 ppid:478 task_flags:0x400740 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0xfd2/0x1c60 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0xe0/0x280 kernel/sched/core.c:6878
schedule_timeout+0xb1/0x230 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x381/0x670 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x20/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:504 [inline]
do_coredump+0x81a/0x35a0 fs/coredump.c:686
get_signal+0x1139/0x1420 kernel/signal.c:3019
arch_do_signal_or_restart+0x9a/0x6f0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x81/0xd0 kernel/entry/common.c:111
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x134/0x160 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7eff4058e929
RSP: 002b:00007eff414a00e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007eff407b6088 RCX: 00007eff4058e929
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007eff407b608c
RBP: 00007eff407b6080 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007eff407b608c
R13: 0000000000000000 R14: 00007ffd7ac4f1a0 R15: 00007ffd7ac4f288
INFO: task syz.3.19:521 blocked for more than 123 seconds.
Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.19 state:D stack:0 pid:521 tgid:517 ppid:479 task_flags:0x400740 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0xfd2/0x1c60 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0xe0/0x280 kernel/sched/core.c:6878
schedule_timeout+0xb1/0x230 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x381/0x670 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x20/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:504 [inline]
do_coredump+0x81a/0x35a0 fs/coredump.c:686
get_signal+0x1139/0x1420 kernel/signal.c:3019
arch_do_signal_or_restart+0x9a/0x6f0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x81/0xd0 kernel/entry/common.c:111
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x134/0x160 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fd97fd8e929
RSP: 002b:00007fd980c650e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007fd97ffb6088 RCX: 00007fd97fd8e929
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd97ffb608c
RBP: 00007fd97ffb6080 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd97ffb608c
R13: 0000000000000000 R14: 00007ffce530c900 R15: 00007ffce530c9e8
INFO: task syz.0.16:526 blocked for more than 123 seconds.
Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.16 state:D stack:0 pid:526 tgid:522 ppid:473 task_flags:0x400740 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0xfd2/0x1c60 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0xe0/0x280 kernel/sched/core.c:6878
schedule_timeout+0xb1/0x230 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x381/0x670 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x20/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:504 [inline]
do_coredump+0x81a/0x35a0 fs/coredump.c:686
get_signal+0x1139/0x1420 kernel/signal.c:3019
arch_do_signal_or_restart+0x9a/0x6f0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x81/0xd0 kernel/entry/common.c:111
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x134/0x160 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f7c7758e929
RSP: 002b:00007f7c783680e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007f7c777b6088 RCX: 00007f7c7758e929
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f7c777b608c
RBP: 00007f7c777b6080 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7c777b608c
R13: 0000000000000000 R14: 00007ffea8cec1f0 R15: 00007ffea8cec2d8
INFO: task syz.5.17:527 blocked for more than 123 seconds.
Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.17 state:D stack:0 pid:527 tgid:524 ppid:475 task_flags:0x400740 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0xfd2/0x1c60 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0xe0/0x280 kernel/sched/core.c:6878
schedule_timeout+0xb1/0x230 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x381/0x670 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x20/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:504 [inline]
do_coredump+0x81a/0x35a0 fs/coredump.c:686
get_signal+0x1139/0x1420 kernel/signal.c:3019
arch_do_signal_or_restart+0x9a/0x6f0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x81/0xd0 kernel/entry/common.c:111
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
do_syscall_64+0x134/0x160 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fe6b0f8e929
RSP: 002b:00007fe6b09ff0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007fe6b11b6088 RCX: 00007fe6b0f8e929
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fe6b11b608c
RBP: 00007fe6b11b6080 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe6b11b608c
R13: 0000000000000000 R14: 00007ffdae32f4e0 R15: 00007ffdae32f5c8
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0 PREEMPT dd587bc51108b623c53c6d3650bdeb7dcc47c5d9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
__dump_stack+0x21/0x30 lib/dump_stack.c:94
dump_stack_lvl+0x10b/0x180 lib/dump_stack.c:120
dump_stack+0x19/0x20 lib/dump_stack.c:129
nmi_cpu_backtrace+0x2bd/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:307 [inline]
watchdog+0x1043/0x1090 kernel/hung_task.c:470
kthread+0x6f4/0x880 kernel/kthread.c:464
ret_from_fork+0x147/0x1f0 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: 0 Comm: swapper/0 Not tainted 6.16.0-rc4-syzkaller-00049-gb4911fb0b060 #0 PREEMPT dd587bc51108b623c53c6d3650bdeb7dcc47c5d9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:pv_native_safe_halt+0x17/0x20 arch/x86/kernel/paravirt.c:82
Code: cc cc cc b8 f4 7a ae ae 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d f3 82 13 00 f3 0f 1e fa 55 48 89 e5 fb f4 <5d> e9 43 63 02 00 cc cc cc b8 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffffff87007d80 EFLAGS: 000002c2
RAX: ffff88826e785000 RBX: ffffffff870174c0 RCX: ffffffff8593d0ae
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 000000000004d40c
RBP: ffffffff87007d80 R08: ffff8881f6e34383 R09: 1ffff1103edc6870
R10: dffffc0000000000 R11: ffffed103edc6871 R12: 1ffffffff0e02e98
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87a6d0b0
FS: 0000000000000000(0000) GS:ffff88826e785000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555b38d4a8 CR3: 000000011c95a000 CR4: 00000000003526b0
Call Trace:
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x17/0x30 arch/x86/kernel/process.c:749
arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:786
default_idle_call+0x3f/0x80 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:185 [inline]
do_idle+0x19c/0x470 kernel/sched/idle.c:325
cpu_startup_entry+0x48/0x70 kernel/sched/idle.c:423
rest_init+0x10b/0x130 init/main.c:745
start_kernel+0x46a/0x4bb init/main.c:1102
x86_64_start_reservations+0x28/0x30 arch/x86/kernel/head64.c:307
x86_64_start_kernel+0x147/0x1cb arch/x86/kernel/head64.c:288
common_startup_64+0x13b/0x157