INFO: task kworker/u8:2:44 blocked for more than 144 seconds.
Not tainted 6.15.0-rc1-syzkaller-g0af2f6be1b42 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:2 state:D stack:0 pid:44 tgid:44 ppid:2 task_flags:0x4248060 flags:0x00000008
Workqueue: xfs_iwalk-9172 xfs_pwork_work
Call trace:
__switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T)
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x16a4/0x2c80 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xbc/0x238 kernel/sched/core.c:6860
schedule_timeout+0xb4/0x2ac kernel/time/sleep_timeout.c:75
do_wait_for_common+0x310/0x47c kernel/sched/completion.c:95
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:148
xfs_buf_iowait+0x10c/0x5c8 fs/xfs/xfs_buf.c:1408
_xfs_buf_read fs/xfs/xfs_buf.c:645 [inline]
xfs_buf_read_map+0x37c/0xab4 fs/xfs/xfs_buf.c:711
xfs_trans_read_buf_map+0x20c/0xae8 fs/xfs/xfs_trans_buf.c:304
xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline]
xfs_btree_read_buf_block+0x274/0x434 fs/xfs/libxfs/xfs_btree.c:1402
xfs_btree_lookup_get_block+0x2a8/0x500 fs/xfs/libxfs/xfs_btree.c:1907
xfs_btree_lookup+0x438/0x12d4 fs/xfs/libxfs/xfs_btree.c:2018
xfs_alloc_lookup fs/xfs/libxfs/xfs_alloc.c:166 [inline]
xfs_alloc_lookup_eq fs/xfs/libxfs/xfs_alloc.c:184 [inline]
xfs_alloc_fixup_trees+0x21c/0xdbc fs/xfs/libxfs/xfs_alloc.c:626
xfs_alloc_cur_finish+0xc4/0x51c fs/xfs/libxfs/xfs_alloc.c:1117
xfs_alloc_ag_vextent_near+0x102c/0x16c4 fs/xfs/libxfs/xfs_alloc.c:1776
xfs_alloc_vextent_iterate_ags+0x65c/0xa5c fs/xfs/libxfs/xfs_alloc.c:3739
xfs_alloc_vextent_start_ag+0x358/0x8ac fs/xfs/libxfs/xfs_alloc.c:3814
xfs_bmap_btalloc_best_length fs/xfs/libxfs/xfs_bmap.c:3622 [inline]
xfs_bmap_btalloc fs/xfs/libxfs/xfs_bmap.c:3667 [inline]
xfs_bmapi_allocate+0x14b4/0x2b54 fs/xfs/libxfs/xfs_bmap.c:3942
xfs_bmapi_write+0x95c/0x1634 fs/xfs/libxfs/xfs_bmap.c:4271
xfs_dquot_disk_alloc+0x510/0xc0c fs/xfs/xfs_dquot.c:381
xfs_qm_dqread+0x1b0/0x718 fs/xfs/xfs_dquot.c:720
xfs_qm_dqget+0x274/0x670 fs/xfs/xfs_dquot.c:932
xfs_qm_quotacheck_dqadjust+0xe0/0x628 fs/xfs/xfs_qm.c:1333
xfs_qm_dqusage_adjust+0x550/0x764 fs/xfs/xfs_qm.c:1459
xfs_iwalk_ag_recs+0x43c/0x828 fs/xfs/xfs_iwalk.c:209
xfs_iwalk_run_callbacks+0x1c0/0x3f4 fs/xfs/xfs_iwalk.c:370
xfs_iwalk_ag+0x8cc/0x9c0 fs/xfs/xfs_iwalk.c:476
xfs_iwalk_ag_work+0x10c/0x1a8 fs/xfs/xfs_iwalk.c:625
xfs_pwork_work+0x80/0x1a4 fs/xfs/xfs_pwork.c:47
process_one_work+0x810/0x1638 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x97c/0xf08 kernel/workqueue.c:3400
kthread+0x674/0x7dc kernel/kthread.c:464
ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
INFO: task syz.1.933:9215 blocked for more than 145 seconds.
Not tainted 6.15.0-rc1-syzkaller-g0af2f6be1b42 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.933 state:D stack:0 pid:9215 tgid:9212 ppid:6477 task_flags:0x400140 flags:0x00000009
Call trace:
__switch_to+0x414/0x788 arch/arm64/kernel/process.c:701 (T)
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x16a4/0x2c80 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xbc/0x238 kernel/sched/core.c:6860
io_schedule+0x8c/0x124 kernel/sched/core.c:7742
bit_wait_io+0x1c/0xac kernel/sched/wait_bit.c:247
__wait_on_bit kernel/sched/wait_bit.c:49 [inline]
out_of_line_wait_on_bit+0x208/0x334 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
__wait_on_buffer fs/buffer.c:123 [inline]
wait_on_buffer include/linux/buffer_head.h:413 [inline]
__bread_slow fs/buffer.c:1265 [inline]
__bread_gfp+0x200/0x34c fs/buffer.c:1488
sb_bread include/linux/buffer_head.h:345 [inline]
exfat_verify_boot_region fs/exfat/super.c:565 [inline]
__exfat_fill_super fs/exfat/super.c:612 [inline]
exfat_fill_super+0xb18/0x2110 fs/exfat/super.c:668
get_tree_bdev_flags+0x38c/0x494 fs/super.c:1636
get_tree_bdev+0x2c/0x3c fs/super.c:1659
exfat_get_tree+0x28/0x38 fs/exfat/super.c:735
vfs_get_tree+0x90/0x28c fs/super.c:1759
do_new_mount+0x278/0x900 fs/namespace.c:3879
path_mount+0x590/0xe04 fs/namespace.c:4206
do_mount fs/namespace.c:4219 [inline]
__do_sys_mount fs/namespace.c:4430 [inline]
__se_sys_mount fs/namespace.c:4407 [inline]
__arm64_sys_mount+0x4f4/0x5d0 fs/namespace.c:4407
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744
el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Showing all locks held in the system:
1 lock held by kthreadd/2:
3 locks held by kworker/u8:0/12:
3 locks held by kworker/u8:1/13:
1 lock held by khungtaskd/32:
#0: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
4 locks held by kworker/u8:2/44:
#0: ffff0000f2fd9148 ((wq_completion)xfs_iwalk-9172){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212
#1: ffff800098947b80 ((work_completion)(&pwork->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212
#2: ffff0000d7334610 (sb_internal#2){.+.+}-{0:0}, at: xfs_dquot_disk_alloc+0x304/0xc0c fs/xfs/xfs_dquot.c:358
#3: ffff0000db174e98 (&xfs_nondir_ilock_class){++++}-{4:4}, at: xfs_ilock+0x1f0/0x418 fs/xfs/xfs_inode.c:165
3 locks held by kworker/u8:3/45:
2 locks held by pr/ttyAMA0/46:
3 locks held by kworker/u8:4/327:
3 locks held by kworker/u8:5/493:
3 locks held by kworker/u8:6/531:
3 locks held by kworker/u8:7/587:
3 locks held by kworker/u8:8/662:
1 lock held by hwrng/1413:
2 locks held by kworker/1:1H/1959:
#0: ffff0000c20b6548 ((wq_completion)kblockd){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212
#1: ffff8000a0a77b80 ((work_completion)(&q->timeout_work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212
2 locks held by kworker/R-bat_e/4208:
2 locks held by syslogd/6072:
1 lock held by udevd/6087:
2 locks held by dhcpcd/6140:
2 locks held by dhcpcd/6141:
2 locks held by getty/6224:
#0: ffff0000d32930a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff80009c1eb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x46c/0x123c drivers/tty/n_tty.c:2222
1 lock held by syz-executor/6466:
1 lock held by syz-executor/6483:
3 locks held by syz-executor/6486:
4 locks held by syz-executor/6488:
1 lock held by syz.4.918/9172:
#0: ffff0000d73340e0 (&type->s_umount_key#50/1){+.+.}-{4:4}, at: alloc_super+0x1b0/0x834 fs/super.c:344
1 lock held by syz.1.933/9215:
#0: ffff0000d76220e0 (&type->s_umount_key#85/1){+.+.}-{4:4}, at: alloc_super+0x1b0/0x834 fs/super.c:344
3 locks held by kworker/u8:9/9216:
3 locks held by kworker/u8:10/9217:
=============================================