INFO: task syz.0.1248:11397 blocked for more than 143 seconds.
Not tainted 6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1248 state:D stack:25136 pid:11397 tgid:11386 ppid:5850 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
__mutex_lock_common kernel/locking/mutex.c:676 [inline]
__mutex_lock+0x81b/0x1060 kernel/locking/mutex.c:760
bdev_open+0x41a/0xe40 block/bdev.c:945
blkdev_open+0x277/0x3f0 block/fops.c:691
do_dentry_open+0x97f/0x1530 fs/open.c:965
vfs_open+0x82/0x3f0 fs/open.c:1095
do_open fs/namei.c:3887 [inline]
path_openat+0x1de4/0x2cb0 fs/namei.c:4046
do_filp_open+0x20b/0x470 fs/namei.c:4073
do_sys_openat2+0x11b/0x1d0 fs/open.c:1435
do_sys_open fs/open.c:1450 [inline]
__do_sys_openat fs/open.c:1466 [inline]
__se_sys_openat fs/open.c:1461 [inline]
__x64_sys_openat+0x174/0x210 fs/open.c:1461
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b7058d550
RSP: 002b:00007f4b7135fb70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4b7058d550
RDX: 0000000000000000 RSI: 00007f4b7135fc10 RDI: 00000000ffffff9c
RBP: 00007f4b7135fc10 R08: 0000000000000000 R09: 002364626e2f7665
R10: 0000000000000000 R11: 0000000000000293 R12: cccccccccccccccd
R13: 00007f4b707b6218 R14: 00007f4b707b6180 R15: 00007ffed6ea1398
INFO: task syz.0.1248:11413 blocked for more than 143 seconds.
Not tainted 6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.1248 state:D stack:24200 pid:11413 tgid:11386 ppid:5850 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
__mutex_lock_common kernel/locking/mutex.c:676 [inline]
__mutex_lock+0x81b/0x1060 kernel/locking/mutex.c:760
bdev_open+0xa2/0xe40 block/bdev.c:945
bdev_file_open_by_dev block/bdev.c:1059 [inline]
bdev_file_open_by_dev+0x182/0x210 block/bdev.c:1034
setup_bdev_super+0x78/0x730 fs/super.c:1610
get_tree_bdev_flags+0x363/0x620 fs/super.c:1690
vfs_get_tree+0x8e/0x340 fs/super.c:1815
do_new_mount fs/namespace.c:3805 [inline]
path_mount+0x1482/0x1fd0 fs/namespace.c:4120
do_mount fs/namespace.c:4133 [inline]
__do_sys_mount fs/namespace.c:4344 [inline]
__se_sys_mount fs/namespace.c:4321 [inline]
__x64_sys_mount+0x28d/0x310 fs/namespace.c:4321
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4b7058ebe9
RSP: 002b:00007f4b7131e038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4b707b6360 RCX: 00007f4b7058ebe9
RDX: 0000200000000040 RSI: 0000200000004a00 RDI: 0000200000000500
RBP: 00007f4b70611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000008007 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4b707b63f8 R14: 00007f4b707b6360 R15: 00007ffed6ea1398
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
watchdog+0xf0e/0x1260 kernel/hung_task.c:491
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x5d7/0x6f0 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: 10 Comm: kworker/0:1 Not tainted 6.17.0-rc2-syzkaller-00028-gbe48bcf004f9 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: events drain_vmap_area_work
RIP: 0010:__list_del_entry include/linux/list.h:215 [inline]
RIP: 0010:list_del_init include/linux/list.h:287 [inline]
RIP: 0010:purge_vmap_node+0x414/0xa30 mm/vmalloc.c:2274
Code: 80 3c 18 00 0f 85 30 04 00 00 41 8b 7e 40 e8 53 5e ff ff 4c 89 ff 41 89 c4 e8 c8 5f da 02 31 ff 89 c6 88 04 24 e8 9c 2c ab ff <0f> b6 04 24 84 c0 0f 84 0a 03 00 00 e8 ab 31 ab ff 49 8d 46 28 48
RSP: 0018:ffffc900000f7af8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff82106024
RDX: ffff88801e2c8000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000009 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffff88801b85d950 R12: 0000000000000000
R13: ffff8880212fea90 R14: ffff8880212fed00 R15: ffff8880212fed28
FS: 0000000000000000(0000) GS:ffff8881246bc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558b131e0018 CR3: 000000003381e000 CR4: 00000000003526f0
Call Trace:
__purge_vmap_area_lazy+0xa06/0xc60 mm/vmalloc.c:2356
drain_vmap_area_work+0x27/0x40 mm/vmalloc.c:2390
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245