INFO: task kworker/u4:0:9 blocked for more than 143 seconds.
Not tainted 5.15.173-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:0 state:D stack: 0 pid: 9 ppid: 2 flags:0x00000008
Workqueue: writeback wb_workfn (flush-7:1)
Call trace:
__switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0xf10/0x1e48 kernel/sched/core.c:6373
schedule+0x11c/0x1c8 kernel/sched/core.c:6456
io_schedule+0x8c/0x194 kernel/sched/core.c:8481
wait_on_page_bit_common+0x6fc/0xc14 mm/filemap.c:1356
__lock_page+0x8c/0xa8 mm/filemap.c:1648
lock_page include/linux/pagemap.h:625 [inline]
write_cache_pages+0x440/0xf58 mm/page-writeback.c:2244
generic_writepages mm/page-writeback.c:2368 [inline]
do_writepages+0x3f8/0x5ec mm/page-writeback.c:2388
__writeback_single_inode+0x148/0x13a4 fs/fs-writeback.c:1647
writeback_sb_inodes+0x94c/0x1654 fs/fs-writeback.c:1930
__writeback_inodes_wb+0x110/0x39c fs/fs-writeback.c:2001
wb_writeback+0x410/0xfc8 fs/fs-writeback.c:2106
wb_check_background_flush fs/fs-writeback.c:2172 [inline]
wb_do_writeback fs/fs-writeback.c:2260 [inline]
wb_workfn+0xc44/0x1070 fs/fs-writeback.c:2288
process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
worker_thread+0x910/0x1034 kernel/workqueue.c:2457
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
INFO: task kworker/0:1:13 blocked for more than 143 seconds.
Not tainted 5.15.173-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1 state:D stack: 0 pid: 13 ppid: 2 flags:0x00000008
Workqueue: events_long flush_old_commits
Call trace:
__switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0xf10/0x1e48 kernel/sched/core.c:6373
schedule+0x11c/0x1c8 kernel/sched/core.c:6456
schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6515
__mutex_lock_common+0xba0/0x2154 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743
reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27
reiserfs_sync_fs fs/reiserfs/super.c:76 [inline]
flush_old_commits+0x1b0/0x2b8 fs/reiserfs/super.c:111
process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
worker_thread+0x910/0x1034 kernel/workqueue.c:2457
kthread+0x37c/0x45c kernel/kthread.c:334
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
INFO: task syz.1.12:4127 blocked for more than 143 seconds.
Not tainted 5.15.173-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.12 state:D stack: 0 pid: 4127 ppid: 4023 flags:0x00000009
Call trace:
__switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0xf10/0x1e48 kernel/sched/core.c:6373
schedule+0x11c/0x1c8 kernel/sched/core.c:6456
io_schedule+0x8c/0x194 kernel/sched/core.c:8481
wait_on_page_bit_common+0x6fc/0xc14 mm/filemap.c:1356
__lock_page mm/filemap.c:1648 [inline]
lock_page include/linux/pagemap.h:625 [inline]
pagecache_get_page+0x66c/0xd94 mm/filemap.c:1910
find_or_create_page include/linux/pagemap.h:420 [inline]
grab_cache_page include/linux/pagemap.h:502 [inline]
grab_tail_page fs/reiserfs/inode.c:2209 [inline]
reiserfs_truncate_file+0x1bc/0x6f0 fs/reiserfs/inode.c:2277
reiserfs_file_release+0x710/0x884 fs/reiserfs/file.c:109
__fput+0x1c4/0x800 fs/file_table.c:280
____fput+0x20/0x30 fs/file_table.c:308
task_work_run+0x130/0x1e4 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
INFO: task syz.1.12:4143 blocked for more than 143 seconds.
Not tainted 5.15.173-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.12 state:D stack: 0 pid: 4143 ppid: 4023 flags:0x00000009
Call trace:
__switch_to+0x308/0x5e8 arch/arm64/kernel/process.c:518
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0xf10/0x1e48 kernel/sched/core.c:6373
schedule+0x11c/0x1c8 kernel/sched/core.c:6456
schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6515
__mutex_lock_common+0xba0/0x2154 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0xa4/0xf8 kernel/locking/mutex.c:743
reiserfs_write_lock_nested+0x68/0xd8 fs/reiserfs/lock.c:78
reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:815 [inline]
lock_journal fs/reiserfs/journal.c:534 [inline]
do_journal_end+0x2cc/0x3c50 fs/reiserfs/journal.c:4025
journal_end fs/reiserfs/journal.c:3414 [inline]
reiserfs_end_persistent_transaction+0x1e4/0x374 fs/reiserfs/journal.c:3183
reiserfs_write_end+0x2d4/0x6fc fs/reiserfs/inode.c:2964
pagecache_write_end+0xa0/0xc0 mm/filemap.c:3619
generic_cont_expand_simple+0x18c/0x208 fs/buffer.c:2367
reiserfs_setattr+0x37c/0xd94 fs/reiserfs/inode.c:3319
notify_change+0xa34/0xcf8 fs/attr.c:505
do_truncate+0x1c0/0x28c fs/open.c:65
vfs_truncate+0x2e0/0x388 fs/open.c:111
do_sys_truncate+0xec/0x1b4 fs/open.c:134
__do_sys_truncate fs/open.c:146 [inline]
__se_sys_truncate fs/open.c:144 [inline]
__arm64_sys_truncate+0x5c/0x70 fs/open.c:144
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Showing all locks held in the system:
3 locks held by kworker/u4:0/9:
#0: ffff0000c21d0138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283
#1: ffff80001bc37c00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285
#2: ffff0000d95c20e0 (&type->s_umount_key#46){++++}-{3:3}, at: trylock_super+0x28/0xf8 fs/super.c:418
4 locks held by kworker/0:1/13:
#0: ffff0000c0021138 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283
#1: ffff80001bc77c00 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285
#2:
ffff0000d95c20e0 (&type->s_umount_key#46){++++}-{3:3}, at: flush_old_commits+0xcc/0x2b8 fs/reiserfs/super.c:97
#3: ffff0000d97ab090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7c/0xe8 fs/reiserfs/lock.c:27
1 lock held by khungtaskd/27:
#0: ffff800014c922e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:311
2 locks held by kworker/u4:4/497:
1 lock held by udevd/3641:
#0: ffff0000cb998118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x12c/0x89c block/bdev.c:817
2 locks held by getty/3786:
#0: ffff0000d3882098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340
#1: ffff80001d60e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x414/0x1204 drivers/tty/n_tty.c:2158
2 locks held by syz.1.12/4127:
#0: ffff0000e91a1498 (&ei->tailpack){+.+.}-{3:3}, at: reiserfs_file_release+0xd0/0x884 fs/reiserfs/file.c:41
#1: ffff0000d97ab090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x68/0xd8 fs/reiserfs/lock.c:78
4 locks held by syz.1.12/4143:
#0: ffff0000d95c2460 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:377
#1: ffff0000e91a16c0 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:789 [inline]
#1: ffff0000e91a16c0 (&sb->s_type->i_mutex_key#20){+.+.}-{3:3}, at: do_truncate+0x1ac/0x28c fs/open.c:63
#2: ffff8000204790f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline]
#2: ffff8000204790f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:534 [inline]
#2: ffff8000204790f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_end+0x2c0/0x3c50 fs/reiserfs/journal.c:4025
#3: ffff0000d97ab090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock_nested+0x68/0xd8 fs/reiserfs/lock.c:78
2 locks held by kworker/1:8/4369:
#0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283
#1: ffff8000206d7c00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285
4 locks held by kworker/u4:11/4942:
3 locks held by kworker/0:9/5050:
#0: ffff0000c0020938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283
#1: ffff800020b37c00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285
#2: ffff0000d5caf240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x274/0x33c4 drivers/net/netdevsim/fib.c:1480
1 lock held by syz.7.749/7398:
2 locks held by syz.8.751/7399:
#0: ffff0000cb998118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xe0/0x6b0 block/bdev.c:912
#1: ffff0000cb9f0468 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x58/0x210 drivers/block/loop.c:2070
3 locks held by syz.6.750/7407:
1 lock held by dhcpcd/7408:
#0: ffff0000d8e3c120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1678 [inline]
#0: ffff0000d8e3c120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x4c/0xbc0 net/packet/af_packet.c:3227
=============================================