EXT4-fs (loop2): last error at time 1676898680: ext4_orphan_get:1256
Bluetooth: hci7: command 0x0409 tx timeout
Bluetooth: hci7: command 0x041b tx timeout
Bluetooth: hci7: command 0x040f tx timeout
Bluetooth: hci7: command 0x0419 tx timeout
INFO: task kworker/u4:6:9466 blocked for more than 140 seconds.
Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:6 D27096 9466 2 0x80000000
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
__mutex_lock_common kernel/locking/mutex.c:1016 [inline]
__mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078
f2fs_balance_fs+0x709/0xd80 fs/f2fs/segment.c:512
f2fs_write_inode+0x500/0x600 fs/f2fs/inode.c:630
write_inode fs/fs-writeback.c:1244 [inline]
__writeback_single_inode+0x733/0x11d0 fs/fs-writeback.c:1442
writeback_sb_inodes+0x537/0xef0 fs/fs-writeback.c:1647
__writeback_inodes_wb+0xc6/0x280 fs/fs-writeback.c:1716
wb_writeback+0x841/0xcc0 fs/fs-writeback.c:1822
wb_check_old_data_flush fs/fs-writeback.c:1924 [inline]
wb_do_writeback fs/fs-writeback.c:1977 [inline]
wb_workfn+0x8ba/0x1250 fs/fs-writeback.c:2006
process_one_work+0x864/0x1570 kernel/workqueue.c:2153
worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Showing all locks held in the system:
3 locks held by kworker/1:1/52:
#0: 000000007f2686cc ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 00000000a72d968f (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
#2: 000000001c12e75d (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150
1 lock held by khungtaskd/1570:
#0: 000000007aa08fc9 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
2 locks held by kworker/u4:4/3597:
3 locks held by kworker/1:2/3686:
#0: 000000007f2686cc ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 00000000a232f5a5 ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
#2: 000000001c12e75d (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236
1 lock held by in:imklog/7800:
#0: 0000000003b072c3 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
4 locks held by kworker/u4:6/9466:
#0: 00000000fec1091e ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124
#1: 00000000a82743bc ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128
#2: 00000000c125e7a4 (&type->s_umount_key#81){++++}, at: trylock_super+0x1d/0x100 fs/super.c:412
#3: 0000000096065a9d (&sbi->gc_mutex){+.+.}, at: f2fs_balance_fs+0x709/0xd80 fs/f2fs/segment.c:512
3 locks held by syz-executor.0/27729:
2 locks held by syz-executor.5/29597:
#0: 000000001c12e75d (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
#0: 000000001c12e75d (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
#1: 000000000ca4ee83 (cpu_hotplug_lock.rw_sem){++++}, at: get_online_cpus include/linux/cpu.h:137 [inline]
#1: 000000000ca4ee83 (cpu_hotplug_lock.rw_sem){++++}, at: flush_all_backlogs net/core/dev.c:5276 [inline]
#1: 000000000ca4ee83 (cpu_hotplug_lock.rw_sem){++++}, at: rollback_registered_many+0x3a8/0xe70 net/core/dev.c:8181
1 lock held by syz-executor.5/29603:
#0: 000000001c12e75d (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
#0: 000000001c12e75d (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.5/29724:
#0: 000000001c12e75d (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
#0: 000000001c12e75d (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
1 lock held by syz-executor.5/29737:
#0: 000000001c12e75d (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline]
#0: 000000001c12e75d (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 27729 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:debug_lockdep_rcu_enabled+0x50/0xe0 kernel/rcu/update.c:253
Code: 08 84 d2 0f 85 87 00 00 00 8b 35 1f 42 d6 09 85 f6 74 79 48 c7 c0 60 f1 45 8a 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 <48> c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 04 84 d2 75 64 8b 0d 07
RSP: 0018:ffff888045afe628 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8a45f160
RDX: dffffc0000000000 RSI: 0000000000000002 RDI: ffffffff886a0dc0
RBP: ffffffff886a0dc0 R08: ffff8880997207c8 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000017
R13: 0000000000000020 R14: 0000000000000001 R15: ffff8880465c19c0
FS: 00007f5d1031b700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff14620b08 CR3: 00000000b3dab000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
___might_sleep+0x15/0x2b0 kernel/sched/core.c:6157
down_read+0x17/0x80 kernel/locking/rwsem.c:23
check_valid_map fs/f2fs/gc.c:454 [inline]
gc_data_segment fs/f2fs/gc.c:929 [inline]
do_garbage_collect fs/f2fs/gc.c:1109 [inline]
f2fs_gc+0x1cf3/0x8c90 fs/f2fs/gc.c:1196
f2fs_balance_fs+0x71a/0xd80 fs/f2fs/segment.c:513
__write_data_page+0xab8/0x22d0 fs/f2fs/data.c:1975
f2fs_write_cache_pages+0x96e/0x13e0 fs/f2fs/data.c:2107
__f2fs_write_data_pages fs/f2fs/data.c:2217 [inline]
f2fs_write_data_pages+0xcc3/0x1060 fs/f2fs/data.c:2244
do_writepages+0xe5/0x290 mm/page-writeback.c:2344
__filemap_fdatawrite_range+0x27d/0x350 mm/filemap.c:446
file_write_and_wait_range+0x93/0x100 mm/filemap.c:776
f2fs_do_sync_file+0x2eb/0x2550 fs/f2fs/file.c:228
f2fs_sync_file+0x136/0x190 fs/f2fs/file.c:334
vfs_fsync_range+0x13a/0x220 fs/sync.c:197
generic_write_sync include/linux/fs.h:2750 [inline]
f2fs_file_write_iter+0x64b/0xbe0 fs/f2fs/file.c:3044
call_write_iter include/linux/fs.h:1821 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x51b/0x770 fs/read_write.c:487
__kernel_write+0x109/0x370 fs/read_write.c:506
dump_emit+0x183/0x300 fs/coredump.c:801
elf_core_dump+0x33c0/0x4c10 fs/binfmt_elf.c:2392
do_coredump+0x1d4e/0x2d60 fs/coredump.c:765
get_signal+0xed9/0x1f70 kernel/signal.c:2583
do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
prepare_exit_to_usermode+0x277/0x2d0 arch/x86/entry/common.c:198
retint_user+0x8/0x18
RIP: 0033:0x6c267b3434
Code: Bad RIP value.
RSP: 002b:00000000200001d8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f5d11ec8f80 RCX: 00007f5d11da90f9
RDX: 0000000020000240 RSI: 00000000200001d0 RDI: 0000000000000480
RBP: 00007f5d11e04ae9 R08: 0000000020000440 R09: 0000000020000440
R10: 0000000020000280 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffd7b8e81bf R14: 00007f5d1031b300 R15: 0000000000022000