INFO: task kworker/u4:14:14823 blocked for more than 143 seconds.
Not tainted 6.2.0-rc5-syzkaller-00199-g5af6ce704936 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:14 state:D stack:17720 pid:14823 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:5)
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
queue_log_writer+0x215/0x300 fs/reiserfs/journal.c:2980
check_journal_end fs/reiserfs/journal.c:3676 [inline]
do_journal_end+0xa38/0x4a30 fs/reiserfs/journal.c:4042
reiserfs_write_inode+0x1f8/0x2a0 fs/reiserfs/inode.c:1779
write_inode fs/fs-writeback.c:1451 [inline]
__writeback_single_inode+0x4d6/0x670 fs/fs-writeback.c:1663
writeback_sb_inodes+0x812/0x1050 fs/fs-writeback.c:1889
wb_writeback+0x41f/0x7b0 fs/fs-writeback.c:2063
wb_do_writeback fs/fs-writeback.c:2206 [inline]
wb_workfn+0x3cb/0xef0 fs/fs-writeback.c:2246
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.5:18681 blocked for more than 144 seconds.
Not tainted 6.2.0-rc5-syzkaller-00199-g5af6ce704936 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:19672 pid:18681 ppid:5116 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
bit_wait+0xe/0xc0 kernel/sched/wait_bit.c:199
__wait_on_bit+0xb5/0x170 kernel/sched/wait_bit.c:49
__inode_wait_for_writeback fs/fs-writeback.c:1472 [inline]
inode_wait_for_writeback+0x211/0x2c0 fs/fs-writeback.c:1484
evict+0x277/0x620 fs/inode.c:661
xattr_unlink fs/reiserfs/xattr.c:96 [inline]
lookup_and_delete_xattr fs/reiserfs/xattr.c:494 [inline]
reiserfs_xattr_set_handle+0xae5/0xec0 fs/reiserfs/xattr.c:529
reiserfs_xattr_set+0x417/0x530 fs/reiserfs/xattr.c:633
__vfs_removexattr+0x44a/0x480 fs/xattr.c:497
__vfs_removexattr_locked+0x1fe/0x400 fs/xattr.c:532
vfs_removexattr+0x104/0x2b0 fs/xattr.c:554
ovl_do_removexattr fs/overlayfs/overlayfs.h:272 [inline]
ovl_removexattr fs/overlayfs/overlayfs.h:280 [inline]
ovl_make_workdir+0x5b9/0xdf0 fs/overlayfs/super.c:1361
ovl_get_workdir+0x2e4/0x410 fs/overlayfs/super.c:1444
ovl_fill_super+0x19d7/0x2790 fs/overlayfs/super.c:2000
mount_nodev+0x52/0xe0 fs/super.c:1405
legacy_get_tree+0xea/0x180 fs/fs_context.c:610
vfs_get_tree+0x88/0x270 fs/super.c:1489
do_new_mount+0x289/0xad0 fs/namespace.c:3145
do_mount fs/namespace.c:3488 [inline]
__do_sys_mount fs/namespace.c:3697 [inline]
__se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f21ec68c0c9
RSP: 002b:00007f21ed45e168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f21ec7abf80 RCX: 00007f21ec68c0c9
RDX: 0000000020000080 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007f21ec6e7ae9 R08: 0000000020000480 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca831b36f R14: 00007f21ed45e300 R15: 0000000000022000
INFO: task syz-executor.5:18689 blocked for more than 144 seconds.
Not tainted 6.2.0-rc5-syzkaller-00199-g5af6ce704936 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:24392 pid:18689 ppid:5116 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
wb_wait_for_completion+0x155/0x280 fs/fs-writeback.c:192
sync_inodes_sb+0x283/0xaa0 fs/fs-writeback.c:2725
sync_filesystem+0x16b/0x220 fs/sync.c:64
reiserfs_remount+0x1a9/0x19d0 fs/reiserfs/super.c:1445
reconfigure_super+0x3bc/0x7b0 fs/super.c:935
do_remount fs/namespace.c:2807 [inline]
path_mount+0xd20/0x10c0 fs/namespace.c:3467
do_mount fs/namespace.c:3488 [inline]
__do_sys_mount fs/namespace.c:3697 [inline]
__se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f21ec68d5fa
RSP: 002b:00007f21ed43cf88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f21ec68d5fa
RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 00007f21ed43d020 R08: 00007f21ed43d020 R09: 0000000001a484bc
R10: 0000000001a484bc R11: 0000000000000206 R12: 00000000200000c0
R13: 0000000020000100 R14: 00007f21ed43cfe0 R15: 00000000200007c0
Showing all locks held in the system:
2 locks held by kworker/u4:0/9:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d327010 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d327810 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8d326e40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4753:
#0: ffff88814a595098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.3/5112:
#0: ffffffff8d32c4b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#0: ffffffff8d32c4b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
2 locks held by syz-executor.2/5123:
#0: ffff88808a5780e0 (&type->s_umount_key#50){++++}-{3:3}, at: deactivate_super+0x96/0xd0 fs/super.c:362
#1: ffffffff8d32c4b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#1: ffffffff8d32c4b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x384/0x860 kernel/rcu/tree_exp.h:946
2 locks held by kworker/1:7/5680:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90006307d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
2 locks held by kworker/0:19/5822:
2 locks held by kworker/u4:14/14823:
#0: ffff888014f0a138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90005df7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
4 locks held by syz-executor.5/18681:
#0: ffff888032ae20e0 (&type->s_umount_key#70/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228
#1: ffff88808580c460 (sb_writers#27){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
#2: ffff8880390437e0 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#2: ffff8880390437e0 (&type->i_mutex_dir_key#14){++++}-{3:3}, at: vfs_removexattr+0xed/0x2b0 fs/xattr.c:553
#3: ffff88807ad0a400 (&type->i_mutex_dir_key#14/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#3: ffff88807ad0a400 (&type->i_mutex_dir_key#14/3){+.+.}-{3:3}, at: lookup_and_delete_xattr fs/reiserfs/xattr.c:486 [inline]
#3: ffff88807ad0a400 (&type->i_mutex_dir_key#14/3){+.+.}-{3:3}, at: reiserfs_xattr_set_handle+0x521/0xec0 fs/reiserfs/xattr.c:529
2 locks held by syz-executor.5/18689:
#0: ffff88808580c0e0 (&type->s_umount_key#71){++++}-{3:3}, at: do_remount fs/namespace.c:2804 [inline]
#0: ffff88808580c0e0 (&type->s_umount_key#71){++++}-{3:3}, at: path_mount+0xcd8/0x10c0 fs/namespace.c:3467
#1: ffff88801e8967d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801e8967d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x264/0xaa0 fs/fs-writeback.c:2723
1 lock held by syz-executor.4/22057:
#0: ffff88802a4240e0 (&type->s_umount_key#60/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc5-syzkaller-00199-g5af6ce704936 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6068 Comm: kworker/u4:8 Not tainted 6.2.0-rc5-syzkaller-00199-g5af6ce704936 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:121 [inline]
RIP: 0010:rcu_is_watching+0x2a/0xb0 kernel/rcu/tree.c:713
Code: 41 57 41 56 53 65 ff 05 0c ff 8e 7e e8 ff dd 3c 09 89 c3 83 f8 08 73 75 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 20 88 e2 8c <4c> 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 d0 fa 6c 00
RSP: 0018:ffffc900166af980 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888078951d40
RDX: 0000000000000000 RSI: ffffffff8b4bbf40 RDI: ffffffff8b4bbf00
RBP: ffffc900166afa28 R08: dffffc0000000000 R09: fffffbfff1d2d18e
R10: fffffbfff1d2d18e R11: 1ffffffff1d2d18d R12: dffffc0000000000
R13: 1ffff92002cd5f54 R14: ffffffff8ce28820 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa651bc000 CR3: 00000000404b7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:108 [inline]
rcu_read_lock_sched_held+0x69/0x110 kernel/rcu/update.c:123
trace_lock_acquire+0x98/0x260 include/trace/events/lock.h:24
lock_acquire+0xa4/0x3c0 kernel/locking/lockdep.c:5639
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:325
rcu_read_lock include/linux/rcupdate.h:764 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xc8/0x5b0 net/batman-adv/network-coding.c:719
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308