INFO: task syz-executor:6478 blocked for more than 156 seconds.
Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:0 pid:6478 tgid:6478 ppid:6467 task_flags:0x400140 flags:0x0000000c
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
folio_wait_bit_common+0x65c/0xbac mm/filemap.c:1317
folio_wait_bit+0x30/0x40 mm/filemap.c:1456
folio_wait_writeback+0x9c/0x100 mm/page-writeback.c:3149
__filemap_fdatawait_range+0x160/0x274 mm/filemap.c:539
filemap_write_and_wait_range+0x244/0x314 mm/filemap.c:700
filemap_write_and_wait include/linux/pagemap.h:68 [inline]
sync_blockdev+0x50/0x6c block/bdev.c:222
sync_filesystem+0x1d8/0x218 fs/sync.c:70
generic_shutdown_super+0x70/0x2bc fs/super.c:621
kill_block_super+0x44/0x90 fs/super.c:1710
deactivate_locked_super+0xc4/0x12c fs/super.c:473
deactivate_super+0xe0/0x100 fs/super.c:506
cleanup_mnt+0x34c/0x3dc fs/namespace.c:1435
__cleanup_mnt+0x20/0x30 fs/namespace.c:1442
task_work_run+0x230/0x2e0 kernel/task_work.c:227
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
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:
4 locks held by kworker/0:0/9:
#0: ffff0000c0028d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212
#1: ffff800098207b80 (reg_work){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212
#2: ffff800093071868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
#3: ffff0000d5358768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline]
#3: ffff0000d5358768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: reg_process_self_managed_hints+0xcc/0x1d0 net/wireless/reg.c:3209
3 locks held by kworker/u8:0/12:
3 locks held by kworker/u8:1/13:
1 lock held by khungtaskd/32:
#0: ffff800090118020 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
3 locks held by kworker/u8:2/44:
3 locks held by kworker/u8:3/45:
2 locks held by pr/ttyAMA0/46:
3 locks held by kworker/u8:4/62:
3 locks held by kworker/u8:5/468:
3 locks held by kworker/u8:6/1626:
3 locks held by kworker/R-ipv6_/4125:
#0: ffff0000d34bd148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212
#1: ffff8000a3f87b20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212
#2: ffff800093071868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
2 locks held by kworker/R-bat_e/4206:
2 locks held by syslogd/6071:
2 locks held by udevd/6086:
2 locks held by getty/6229:
#0: ffff0000d353d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff80009c1db2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x46c/0x123c drivers/tty/n_tty.c:2222
3 locks held by syz-executor/6458:
#0: ffff0000d6c49e48 (vm_lock){++++}-{0:0}, at: do_page_fault+0x3b0/0x11c8 arch/arm64/mm/fault.c:619
#1: ffff0000d943c518 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1783 [inline]
#1: ffff0000d943c518 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1948 [inline]
#1: ffff0000d943c518 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x19c/0xe30 fs/ext4/inode.c:6220
#2: ffff0000d9442950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xeb8/0x1170 fs/jbd2/transaction.c:442
2 locks held by syz-executor/6468:
1 lock held by syz-executor/6475:
#0: ffff800093071868 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
1 lock held by syz-executor/6477:
1 lock held by syz-executor/6478:
#0: ffff0000f60520e0 (&type->s_umount_key#65){+.+.}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff0000f60520e0 (&type->s_umount_key#65){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff0000f60520e0 (&type->s_umount_key#65){+.+.}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505
3 locks held by kworker/u8:7/7034:
2 locks held by sed/7141:
3 locks held by kworker/u8:8/7142:
3 locks held by kworker/u8:9/7143:
2 locks held by kworker/u8:10/7144:
2 locks held by syz-executor/7145:
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