INFO: task syz.1.2812:8369 blocked for more than 122 seconds.
Not tainted 6.12.30-syzkaller-g153a0a38e976 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2812 state:D stack:0 pid:8369 tgid:8369 ppid:6043 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5924 [inline]
__schedule+0x145b/0x1f10 kernel/sched/core.c:7750
__schedule_loop kernel/sched/core.c:7831 [inline]
schedule+0xc6/0x240 kernel/sched/core.c:7846
request_wait_answer fs/fuse/dev.c:472 [inline]
__fuse_request_send fs/fuse/dev.c:487 [inline]
__fuse_simple_request+0xdac/0x1970 fs/fuse/dev.c:582
fuse_simple_request fs/fuse/fuse_i.h:1248 [inline]
fuse_flush+0x909/0x1d50 fs/fuse/file.c:582
filp_flush fs/open.c:1550 [inline]
filp_close+0xc0/0x160 fs/open.c:1563
__range_close fs/file.c:712 [inline]
__close_range+0x50e/0x6c0 fs/file.c:769
__do_sys_close_range fs/open.c:1616 [inline]
__se_sys_close_range fs/open.c:1613 [inline]
__x64_sys_close_range+0x7e/0x90 fs/open.c:1613
x64_sys_call+0x1686/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:437
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: 0033:0x7f8f0998e929
RSP: 002b:00007ffd3b6ab968 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007f8f09bb7ba0 RCX: 00007f8f0998e929
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f8f09bb7ba0 R08: 00000000000001ac R09: 000000193b6abc5f
R10: 00007f8f09bb7ac0 R11: 0000000000000246 R12: 0000000000031bc3
R13: 00007ffd3b6aba60 R14: ffffffffffffffff R15: 00007ffd3b6aba80
INFO: task syz.1.2812:8370 blocked for more than 123 seconds.
Not tainted 6.12.30-syzkaller-g153a0a38e976 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2812 state:D stack:0 pid:8370 tgid:8369 ppid:6043 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5924 [inline]
__schedule+0x145b/0x1f10 kernel/sched/core.c:7750
__schedule_loop kernel/sched/core.c:7831 [inline]
schedule+0xc6/0x240 kernel/sched/core.c:7846
request_wait_answer fs/fuse/dev.c:472 [inline]
__fuse_request_send fs/fuse/dev.c:487 [inline]
__fuse_simple_request+0xdac/0x1970 fs/fuse/dev.c:582
fuse_simple_request fs/fuse/fuse_i.h:1248 [inline]
fuse_do_getattr+0x350/0x630 fs/fuse/dir.c:1586
fuse_update_get_attr+0x8cd/0x2600 fs/fuse/dir.c:1642
fuse_getattr+0x3bf/0x630 fs/fuse/dir.c:2482
vfs_getattr_nosec+0x25b/0x2f0 fs/stat.c:166
vfs_getattr fs/stat.c:207 [inline]
vfs_statx_path+0x70/0x300 fs/stat.c:251
vfs_statx+0x130/0x200 fs/stat.c:315
vfs_fstatat fs/stat.c:341 [inline]
vfs_lstat include/linux/fs.h:3381 [inline]
__do_sys_newlstat fs/stat.c:491 [inline]
__se_sys_newlstat+0xd7/0x360 fs/stat.c:485
__x64_sys_newlstat+0x5f/0x80 fs/stat.c:485
x64_sys_call+0x1b6f/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:7
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: 0033:0x7f8f0998e929
RSP: 002b:00007f8f0a746038 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 00007f8f09bb5fa0 RCX: 00007f8f0998e929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000b80
RBP: 00007f8f09a10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8f09bb5fa0 R15: 00007ffd3b6ab808
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.30-syzkaller-g153a0a38e976 #0 148e3123b04ac6bd10e65cc50fbc76805c129a8d
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+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:229 [inline]
watchdog+0xd8f/0xed0 kernel/hung_task.c:385
kthread+0x2ca/0x370 kernel/kthread.c:389
ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.30-syzkaller-g153a0a38e976 #0 148e3123b04ac6bd10e65cc50fbc76805c129a8d
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:106
Code: cc cc cc b8 c0 e0 12 1e 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 73 bc 41 00 f3 0f 1e fa 55 48 89 e5 fb f4 <5d> e9 c3 59 02 00 cc cc cc b8 00 00 00 00 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900001a7e00 EFLAGS: 000002c6
RAX: ffff8881f6f00000 RBX: ffff888103668000 RCX: ffffffff8585900e
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 00000000005ce89c
RBP: ffffc900001a7e00 R08: ffff8881f6f39733 R09: 1ffff1103ede72e6
R10: dffffc0000000000 R11: ffffed103ede72e7 R12: 1ffff110206cd000
R13: 0000000000000001 R14: 0000000000000000 R15: ffffffff87ca71a8
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7d66781178 CR3: 000000012601c000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_safe_halt arch/x86/include/asm/paravirt.h:112 [inline]
default_idle+0x17/0x30 arch/x86/kernel/process.c:748
arch_cpu_idle+0xd/0x20 arch/x86/kernel/process.c:785
default_idle_call+0x3f/0x80 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:185 [inline]
do_idle+0x1a0/0x470 kernel/sched/idle.c:326
cpu_startup_entry+0x48/0x70 kernel/sched/idle.c:424
start_secondary+0x12e/0x140 arch/x86/kernel/smpboot.c:314
common_startup_64+0x13b/0x157