INFO: task kworker/0:3:5236 blocked for more than 147 seconds.
Not tainted 6.12.0-rc2-next-20241008-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:3 state:D stack:19024 pid:5236 tgid:5236 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
chaoskey_disconnect+0xb2/0x270 drivers/usb/misc/chaoskey.c:235
usb_unbind_interface+0x25e/0x940 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x503/0x7c0 drivers/base/dd.c:1296
bus_remove_device+0x34f/0x420 drivers/base/bus.c:576
device_del+0x57a/0x9b0 drivers/base/core.c:3864
usb_disable_device+0x3bf/0x850 drivers/usb/core/message.c:1418
usb_disconnect+0x340/0x950 drivers/usb/core/hub.c:2304
hub_port_connect drivers/usb/core/hub.c:5361 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x1ebc/0x5150 drivers/usb/core/hub.c:5903
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.2.728:9496 blocked for more than 147 seconds.
Not tainted 6.12.0-rc2-next-20241008-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.728 state:D stack:26608 pid:9496 tgid:9494 ppid:7664 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
chaoskey_release+0x169/0x2f0 drivers/usb/misc/chaoskey.c:322
__fput+0x23f/0x880 fs/file_table.c:431
task_work_run+0x24f/0x310 kernel/task_work.c:228
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f166d57dff9
RSP: 002b:00007f166e338038 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffed RBX: 00007f166d735f80 RCX: 00007f166d57dff9
RDX: 0000000000000080 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00007f166d5f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f166d735f80 R15: 00007ffc9406d968
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-next-20241008-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
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: 11933 Comm: syz.3.1110 Not tainted 6.12.0-rc2-next-20241008-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:add_transaction_credits fs/jbd2/transaction.c:224 [inline]
RIP: 0010:start_this_handle+0x799/0x2110 fs/jbd2/transaction.c:407
Code: e8 7c 7c 89 ff 4c 8b 2b 4d 85 ed 0f 84 6a 09 00 00 49 8d 5d 0c 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 0f 85 6e 0f 00 00 8b 1b 31 ff 89 de e8 54 c9 1f ff 85 db 4c
RSP: 0000:ffffc90003f57380 EFLAGS: 00000a07
RAX: 0000000000000000 RBX: ffff888026f8fa0c RCX: dffffc0000000000
RDX: ffff88802b3b0000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003f57680 R08: ffffffff82752c35 R09: 1ffff11006470816
R10: dffffc0000000000 R11: ffffed1006470817 R12: 1ffff1100f012867
R13: ffff888026f8fa00 R14: 1ffff1100647081e R15: ffff8880323840b0
FS: 000055555a6de500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f81fffc CR3: 00000000671aa000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
jbd2__journal_start+0x2da/0x5d0 fs/jbd2/transaction.c:505
__ext4_journal_start_sb+0x239/0x600 fs/ext4/ext4_jbd2.c:112
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x92/0x110 fs/ext4/inode.c:5981
__mark_inode_dirty+0x2ee/0xe90 fs/fs-writeback.c:2493
generic_update_time fs/inode.c:2125 [inline]
inode_update_time fs/inode.c:2138 [inline]
__file_update_time fs/inode.c:2380 [inline]
file_update_time+0x3d2/0x450 fs/inode.c:2410
ext4_page_mkwrite+0x206/0xdf0 fs/ext4/inode.c:6102
do_page_mkwrite+0x198/0x480 mm/memory.c:3170
do_shared_fault mm/memory.c:5375 [inline]
do_fault mm/memory.c:5437 [inline]
do_pte_missing mm/memory.c:3973 [inline]
handle_pte_fault+0x1235/0x6830 mm/memory.c:5778
__handle_mm_fault mm/memory.c:5921 [inline]
handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6089
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f8284a5cb46
Code: 4d 89 f5 41 83 e5 03 0f 85 f7 01 00 00 48 89 df be 04 00 00 00 e8 ca b5 fe ff 48 8b 43 38 83 43 28 04 48 8d 50 fc 48 89 53 38 <89> 68 fc 8b 43 28 48 83 c4 38 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f
RSP: 002b:00007ffcd008cd00 EFLAGS: 00010202
RAX: 0000001b2f820000 RBX: 00007f8285865720 RCX: 0000001b2f420210
RDX: 0000001b2f81fffc RSI: 00000000003ffdf0 RDI: 00007f8285865700
RBP: 0000000000000000 R08: 00007f8284d20000 R09: 00007f8284d22000
R10: 00007f8285865700 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000048e