INFO: task kworker/0:7:5159 blocked for more than 143 seconds.
Not tainted 6.8.0-rc4-syzkaller-00034-g8d3dea210042 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:7 state:D stack:23936 pid:5159 tgid:5159 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
usb_kill_urb.part.0+0x1ca/0x250 drivers/usb/core/urb.c:713
usb_kill_urb+0x83/0xa0 drivers/usb/core/urb.c:702
usb_start_wait_urb+0x255/0x4c0 drivers/usb/core/message.c:65
usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
usb_control_msg+0x327/0x4b0 drivers/usb/core/message.c:154
get_bMaxPacketSize0.constprop.0+0xa5/0x1c0 drivers/usb/core/hub.c:4768
hub_port_init+0x693/0x3a00 drivers/usb/core/hub.c:4964
hub_port_connect drivers/usb/core/hub.c:5412 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5623 [inline]
port_event drivers/usb/core/hub.c:5783 [inline]
hub_event+0x2b65/0x4e20 drivers/usb/core/hub.c:5865
process_one_work+0x889/0x15e0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
INFO: task kworker/1:3:20295 blocked for more than 144 seconds.
Not tainted 6.8.0-rc4-syzkaller-00034-g8d3dea210042 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3 state:D stack:27088 pid:20295 tgid:20295 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c60 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x280 kernel/sched/core.c:6817
usb_kill_urb.part.0+0x1ca/0x250 drivers/usb/core/urb.c:713
usb_kill_urb+0x83/0xa0 drivers/usb/core/urb.c:702
usb_start_wait_urb+0x255/0x4c0 drivers/usb/core/message.c:65
usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
usb_control_msg+0x327/0x4b0 drivers/usb/core/message.c:154
get_bMaxPacketSize0.constprop.0+0xa5/0x1c0 drivers/usb/core/hub.c:4768
hub_port_init+0x693/0x3a00 drivers/usb/core/hub.c:4964
hub_port_connect drivers/usb/core/hub.c:5412 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5623 [inline]
port_event drivers/usb/core/hub.c:5783 [inline]
hub_event+0x2b65/0x4e20 drivers/usb/core/hub.c:5865
process_one_work+0x889/0x15e0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d7ad160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d7ad160 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d7ad160 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:8/2427:
2 locks held by getty/4814:
#0: ffff88802b38e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfca/0x1490 drivers/tty/n_tty.c:2201
5 locks held by kworker/0:7/5159:
#0: ffff88801babbd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc900040c7d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
#2: ffff888023c7a190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888023c7a190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5811
#3: ffff888023d01510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3169 [inline]
#3: ffff888023d01510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5380 [inline]
#3: ffff888023d01510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5623 [inline]
#3: ffff888023d01510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5783 [inline]
#3: ffff888023d01510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2802/0x4e20 drivers/usb/core/hub.c:5865
#4: ffff888023bfe9f8 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5381 [inline]
#4: ffff888023bfe9f8 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5623 [inline]
#4: ffff888023bfe9f8 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5783 [inline]
#4: ffff888023bfe9f8 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x282b/0x4e20 drivers/usb/core/hub.c:5865
5 locks held by kworker/1:3/20295:
#0: ffff88801babbd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc900034bfd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
#2: ffff888023f7c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888023f7c190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e20 drivers/usb/core/hub.c:5811
#3: ffff888023f7f510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3169 [inline]
#3: ffff888023f7f510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5380 [inline]
#3: ffff888023f7f510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5623 [inline]
#3: ffff888023f7f510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5783 [inline]
#3: ffff888023f7f510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2802/0x4e20 drivers/usb/core/hub.c:5865
#4: ffff8880232b8b08 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5381 [inline]
#4: ffff8880232b8b08 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5623 [inline]
#4: ffff8880232b8b08 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5783 [inline]
#4: ffff8880232b8b08 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x282b/0x4e20 drivers/usb/core/hub.c:5865
2 locks held by kworker/1:4/23735:
#0: ffff888014c8e538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x789/0x15e0 kernel/workqueue.c:2608
#1: ffffc9000301fd80 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15e0 kernel/workqueue.c:2609
3 locks held by syz-executor.0/10732:
2 locks held by syz-executor.4/10738:
2 locks held by syz-executor.3/10741:
4 locks held by syz-executor.1/10751:
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: ioctl_setflags fs/ioctl.c:726 [inline]
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: do_vfs_ioctl+0xf73/0x1940 fs/ioctl.c:840
#1: ffff88809fb3f200 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88809fb3f200 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_fileattr_set+0x153/0xc00 fs/ioctl.c:682
#2: ffff88802e280b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_write fs/ext4/ext4.h:1781 [inline]
#2: ffff88802e280b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ind_migrate+0x23c/0xa50 fs/ext4/migrate.c:625
#3: ffffffff8d7b89b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#3: ffffffff8d7b89b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x6b5/0x800 kernel/rcu/tree_exp.h:995
2 locks held by syz-executor.1/10752:
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: ksys_pwrite64 fs/read_write.c:705 [inline]
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_pwrite64 fs/read_write.c:715 [inline]
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_pwrite64 fs/read_write.c:712 [inline]
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_pwrite64+0x1fe/0x260 fs/read_write.c:712
#1: ffff88809fb3f200 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88809fb3f200 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3d0 fs/ext4/file.c:294
2 locks held by syz-executor.1/10753:
#0: ffff88807eb48d48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xeb/0x180 fs/file.c:1191
#1: ffff88809fb3f200 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#1: ffff88809fb3f200 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_llseek+0x268/0x2f0 fs/ext4/file.c:919
3 locks held by syz-executor.2/10756:
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: ioctl_setflags fs/ioctl.c:726 [inline]
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: do_vfs_ioctl+0xf73/0x1940 fs/ioctl.c:840
#1: ffff88809fb3e800 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88809fb3e800 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_fileattr_set+0x153/0xc00 fs/ioctl.c:682
#2: ffff88802e280b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_write fs/ext4/ext4.h:1781 [inline]
#2: ffff88802e280b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ind_migrate+0x23c/0xa50 fs/ext4/migrate.c:625
2 locks held by syz-executor.2/10757:
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: ksys_pwrite64 fs/read_write.c:705 [inline]
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: __do_sys_pwrite64 fs/read_write.c:715 [inline]
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: __se_sys_pwrite64 fs/read_write.c:712 [inline]
#0: ffff88802e42e420 (sb_writers#5){.+.+}-{0:0}, at: __x64_sys_pwrite64+0x1fe/0x260 fs/read_write.c:712
#1: ffff88809fb3e800 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:802 [inline]
#1: ffff88809fb3e800 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xb0/0x3d0 fs/ext4/file.c:294
2 locks held by syz-executor.2/10758:
#0: ffff88807eb2cac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xeb/0x180 fs/file.c:1191
#1: ffff88809fb3e800 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#1: ffff88809fb3e800 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_llseek+0x268/0x2f0 fs/ext4/file.c:919
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc4-syzkaller-00034-g8d3dea210042 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
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:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3908 Comm: kworker/u4:12 Not tainted 6.8.0-rc4-syzkaller-00034-g8d3dea210042 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: ext4-rsv-conversion ext4_end_io_rsv_work
RIP: 0010:task_irq_context kernel/locking/lockdep.c:4607 [inline]
RIP: 0010:__lock_acquire+0x372/0x3b40 kernel/locking/lockdep.c:5074
Code: 02 48 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d7 10 00 00 48 8b 04 24 49 8d 7c 24 24 8b 54 24 08 83 b8 a4 0a 00 00 01 <44> 89 e8 83 d8 ff c1 e5 0f c1 e0 0d c1 e1 10 0f b7 ed 09 e8 81 e1
RSP: 0018:ffffc9000bc777a0 EFLAGS: 00000097
RAX: ffff88802dbad940 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: ffff88802dbae3e4 RDI: ffff88802dbae49c
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 000000000000000f R11: 0000000000000003 R12: ffff88802dbae478
R13: 0000000000000000 R14: 0000000000000000 R15: 00000000000002c8
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00aaedc00 CR3: 000000004eaa2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
__folio_end_writeback+0x34b/0xd80 mm/page-writeback.c:2955
folio_end_writeback+0x137/0x400 mm/filemap.c:1599
ext4_finish_bio+0xd9d/0x1390 fs/ext4/page-io.c:145
ext4_release_io_end+0x118/0x3a0 fs/ext4/page-io.c:160
ext4_end_io_end fs/ext4/page-io.c:194 [inline]
ext4_do_flush_completed_IO fs/ext4/page-io.c:259 [inline]
ext4_end_io_rsv_work+0x168/0x690 fs/ext4/page-io.c:273
process_one_work+0x889/0x15e0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242