INFO: task syz.3.2426:7577 blocked for more than 122 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2426 state:D stack:0 pid:7577 tgid:7576 ppid:292 flags:0x00004004
Call Trace:
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
super_lock+0x150/0x300 fs/super.c:115
super_lock_shared fs/super.c:140 [inline]
iterate_supers+0x8a/0x560 fs/super.c:934
quota_sync_all fs/quota/quota.c:69 [inline]
__do_sys_quotactl fs/quota/quota.c:938 [inline]
__se_sys_quotactl+0x308/0x7d0 fs/quota/quota.c:917
__x64_sys_quotactl+0x9f/0xc0 fs/quota/quota.c:917
x64_sys_call+0x2818/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:180
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: 0033:0x7f9c2178f6c9
RSP: 002b:00007f9c2268f038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f9c219e5fa0 RCX: 00007f9c2178f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000101
RBP: 00007f9c21811f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9c219e6038 R14: 00007f9c219e5fa0 R15: 00007fff2173b228
INFO: task syz.3.2426:7578 blocked for more than 123 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2426 state:D stack:0 pid:7578 tgid:7576 ppid:292 flags:0x00004004
Call Trace:
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
super_lock+0x150/0x300 fs/super.c:115
super_lock_shared fs/super.c:140 [inline]
iterate_supers+0x8a/0x560 fs/super.c:934
quota_sync_all fs/quota/quota.c:69 [inline]
__do_sys_quotactl fs/quota/quota.c:938 [inline]
__se_sys_quotactl+0x308/0x7d0 fs/quota/quota.c:917
__x64_sys_quotactl+0x9f/0xc0 fs/quota/quota.c:917
x64_sys_call+0x2818/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:180
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: 0033:0x7f9c2178f6c9
RSP: 002b:00007f9c2266e038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f9c219e6090 RCX: 00007f9c2178f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff80000100
RBP: 00007f9c21811f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9c219e6128 R14: 00007f9c219e6090 R15: 00007fff2173b228
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
__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
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 60 Comm: kworker/u8:2 Not tainted syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
RIP: 0010:se_update_runnable kernel/sched/sched.h:945 [inline]
RIP: 0010:enqueue_entity+0x85/0xf90 kernel/sched/fair.c:5530
Code: 00 00 e8 ce 44 01 00 48 89 df 4c 89 fe ba 05 00 00 00 e8 2e b1 ff ff 49 8d 9f a8 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 b1 0e 7f 00 4c 8b 33 4d 85 f6 74 57 49 8d 7e 14
RSP: 0018:ffffc900000078a8 EFLAGS: 00000046
RAX: 1ffff11020dd09ad RBX: ffff888106e84d68 RCX: b43b7c84097e8800
RDX: 0000000000008400 RSI: dffffc0000000000 RDI: ffff8881f6e4fc1c
RBP: ffffc90000007910 R08: 0000000000000000 R09: 1ffff11020dd09b3
R10: 0000000000000001 R11: ffff888106e84d9c R12: ffff888106e84c00
R13: dffffc0000000000 R14: ffff8881f6e4fbd0 R15: ffff888106e84cc0
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffff8a73622a CR3: 0000000155372000 CR4: 00000000003526b0
Call Trace:
enqueue_task_fair+0x3fb/0x17e0 kernel/sched/fair.c:7181
enqueue_task+0x7df/0x11f0 kernel/sched/core.c:2104
__activate_task kernel/sched/core.c:2151 [inline]
activate_task+0x38b/0x3d0 kernel/sched/core.c:2185
ttwu_do_activate+0x154/0x630 kernel/sched/core.c:4209
ttwu_queue kernel/sched/core.c:4506 [inline]
try_to_wake_up+0xd87/0x1b00 kernel/sched/core.c:4845
wake_up_process+0x14/0x20 kernel/sched/core.c:4980
hrtimer_wakeup+0x52/0x70 kernel/time/hrtimer.c:1989
__run_hrtimer kernel/time/hrtimer.c:1753 [inline]
__hrtimer_run_queues+0x3c0/0x9e0 kernel/time/hrtimer.c:1817
hrtimer_interrupt+0x37e/0xf00 kernel/time/hrtimer.c:1879
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x8e/0x2b0 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0x7d/0x90 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1f/0x30 arch/x86/include/asm/idtentry.h:702
RIP: 0010:fmul2 arch/x86/crypto/curve25519-x86_64.c:296 [inline]
RIP: 0010:curve25519_ever64_base arch/x86/crypto/curve25519-x86_64.c:1578 [inline]
RIP: 0010:curve25519_base_arch+0xd1a/0x2fc0 arch/x86/crypto/curve25519-x86_64.c:1609
Code: 41 50 c4 62 ab f6 5e 28 f3 4d 0f 38 f6 d1 66 4c 0f 38 f6 d3 4c 89 51 58 c4 62 e3 f6 6e 30 f3 49 0f 38 f6 db 66 49 0f 38 f6 de <49> c7 c0 00 00 00 00 c4 e2 8b f6 56 38 f3 4d 0f 38 f6 f5 66 4c 0f
RSP: 0018:ffffc90000c87560 EFLAGS: 00000247
RAX: 5c95b9c0ab2a3a7e RBX: 84d35511330159cd RCX: ffffc90000c87700
RDX: 0098f6e1cef81c1e RSI: ffffc90000c87680 RDI: ffffc90000c87640
RBP: ffffc90000c87850 R08: 06a71fdfe8e358df R09: 007f3dab0a321b4a
R10: 57ef0dcff59cb8e8 R11: 006fb24c2fad33fe R12: ffffc90000c87680
R13: 0071565d96b1bd35 R14: d6842f11ba840ec9 R15: ffffc90000c87600
curve25519_generate_public include/crypto/curve25519.h:55 [inline]
wg_noise_handshake_create_initiation+0x22f/0x7f0 drivers/net/wireguard/noise.c:542
wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline]
wg_packet_handshake_send_worker+0x160/0x240 drivers/net/wireguard/send.c:51
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0x7d2/0x1020 kernel/workqueue.c:3319
worker_thread+0xc58/0x1250 kernel/workqueue.c:3400
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