INFO: task kworker/0:6:5980 blocked for more than 143 seconds.
Not tainted 6.12.0-syzkaller-09734-g445d9f05fa14 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:6 state:D stack:23280 pid:5980 tgid:5980 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
ath9k_hif_usb_disconnect+0xf7/0x3f0 drivers/net/wireless/ath/ath9k/hif_usb.c:1438
usb_unbind_interface+0x1e8/0x970 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x122/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1296
bus_remove_device+0x22f/0x420 drivers/base/bus.c:576
device_del+0x396/0x9f0 drivers/base/core.c:3861
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1418
usb_disconnect+0x2e1/0x920 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+0x1da5/0x4e10 drivers/usb/core/hub.c:5903
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e1bba80 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bba80 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bba80 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
6 locks held by kworker/u8:7/3503:
#0: ffff888020efc148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000cc27d80 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff8880352ea0e0 (&type->s_umount_key#51){++++}-{4:4}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:562
#3: ffff8880352ecb98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b3/0x820 mm/page-writeback.c:2702
#4: ffff8880352ee958 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xf6c/0x1430 fs/jbd2/transaction.c:448
#5: ffff88807c002a28 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x352/0x1370 fs/ext4/inode.c:701
3 locks held by kworker/u8:9/3535:
2 locks held by getty/5602:
#0: ffff88814d1d70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
2 locks held by syz-executor/5823:
#0: ffff88802989d580 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff88802989d580 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6278
#1: ffff8880352ea518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3176
3 locks held by kworker/0:3/5879:
#0: ffff88801b078948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc9000469fd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff88807c0c5d20 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:828 [inline]
#2: ffff88807c0c5d20 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: open_last_lookups fs/namei.c:3747 [inline]
#2: ffff88807c0c5d20 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: path_openat+0x88a/0x2d60 fs/namei.c:3984
5 locks held by kworker/0:6/5980:
#0: ffff888022281d48 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90003517d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
#2: ffff888144756190 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
#2: ffff888144756190 (&dev->mutex){....}-{4:4}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5849
#3: ffff888029145190 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff888029145190 (&dev->mutex){....}-{4:4}, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2295
#4: ffff888054390160 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff888054390160 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff888054390160 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1293
2 locks held by syz-executor/12765:
#0: ffff8880352ea420 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4073
#1: ffff88807c0c6708 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:853 [inline]
#1: ffff88807c0c6708 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1c2/0x530 fs/namei.c:4080
2 locks held by syz-executor/12773:
#0: ffff8880352ea420 (sb_writers#5){.+.+}-{0:0}, at: filename_create+0x10d/0x530 fs/namei.c:4073
#1: ffff88807ef8b580 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:853 [inline]
#1: ffff88807ef8b580 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1c2/0x530 fs/namei.c:4080
2 locks held by syz.1.1650/12801:
#0: ffff8880368854a8 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff8880368854a8 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6278
#1: ffff8880352ea518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3176
2 locks held by syz.6.1653/12814:
#0: ffff88806ef4cd18 (&vma->vm_lock->lock){++++}-{4:4}, at: vma_start_read include/linux/mm.h:716 [inline]
#0: ffff88806ef4cd18 (&vma->vm_lock->lock){++++}-{4:4}, at: lock_vma_under_rcu+0x13e/0x980 mm/memory.c:6278
#1: ffff8880352ea518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x177/0x380 mm/memory.c:3176
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-syzkaller-09734-g445d9f05fa14 #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+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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xf14/0x1240 kernel/hung_task.c:397
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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: 1090 Comm: kworker/u8:6 Not tainted 6.12.0-syzkaller-09734-g445d9f05fa14 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:lock_release+0x170/0x6f0 kernel/locking/lockdep.c:5862
Code: f6 0f 85 8e 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 19 05 00 00 49 81 3c 24 a0 37 7f 93 <0f> 84 65 02 00 00 9c 8f 04 24 fa 48 c7 c7 a0 e1 6c 8b e8 29 09 c4
RSP: 0018:ffffc90003eafa98 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920007d5f55 RCX: ffffffff816b6969
RDX: 1ffffffff1c37750 RSI: 0000000000000000 RDI: ffff888027d98adc
RBP: ffffffff9060e1b4 R08: 0000000000000000 R09: fffffbfff20c15d2
R10: ffffffff9060ae97 R11: 0000000000000003 R12: ffffffff8e1bba80
R13: ffff88806039cd80 R14: ffff888027d98000 R15: ffff888031d39100
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056443318dca8 CR3: 000000000df7e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_release include/linux/rcupdate.h:347 [inline]
rcu_read_unlock include/linux/rcupdate.h:880 [inline]
batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:771 [inline]
batadv_iv_ogm_schedule_buff+0x761/0x14d0 net/batman-adv/bat_iv_ogm.c:825
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:868 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:861 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x31e/0x8d0 net/batman-adv/bat_iv_ogm.c:1712
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244