INFO: task kworker/u4:8:9346 blocked for more than 143 seconds.
Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:8 state:D stack:17368 pid:9346 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:3)
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.3:25798 blocked for more than 144 seconds.
Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:19288 pid:25798 ppid:5120 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: 0033:0x7f59d2a8c0c9
RSP: 002b:00007f59d3814168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f59d2babf80 RCX: 00007f59d2a8c0c9
RDX: 0000000020000080 RSI: 00000000200000c0 RDI: 0000000000000000
RBP: 00007f59d2ae7ae9 R08: 0000000020000480 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe48930a3f R14: 00007f59d3814300 R15: 0000000000022000
INFO: task syz-executor.3:25811 blocked for more than 145 seconds.
Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:23304 pid:25811 ppid:5120 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: 0033:0x7f59d2a8d5fa
RSP: 002b:00007f59d37d1f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f59d2a8d5fa
RDX: 00000000200001c0 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 00007f59d37d2020 R08: 00007f59d37d2020 R09: 0000000001a484bc
R10: 0000000001a484bc R11: 0000000000000202 R12: 00000000200001c0
R13: 0000000020000100 R14: 00007f59d37d1fe0 R15: 00000000200004c0
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d326f10 (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: ffffffff8d327710 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
2 locks held by kworker/1:0/22:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc900001c7d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
1 lock held by khungtaskd/28:
#0: ffffffff8d326d40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4756:
#0: ffff88814a267098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.5/5105:
#0: ffffffff8d32c3b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#0: ffffffff8d32c3b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
2 locks held by kworker/u4:8/9346:
#0: ffff888017b14938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90014f5fd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
4 locks held by syz-executor.3/25798:
#0: ffff888033a8c0e0 (&type->s_umount_key#56/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228
#1: ffff88803062e460 (sb_writers#20){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
#2: ffff88802f8396c0 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#2: ffff88802f8396c0 (&type->i_mutex_dir_key#9){++++}-{3:3}, at: vfs_removexattr+0xed/0x2b0 fs/xattr.c:553
#3: ffff88802f83a400 (&type->i_mutex_dir_key#9/3){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#3: ffff88802f83a400 (&type->i_mutex_dir_key#9/3){+.+.}-{3:3}, at: lookup_and_delete_xattr fs/reiserfs/xattr.c:486 [inline]
#3: ffff88802f83a400 (&type->i_mutex_dir_key#9/3){+.+.}-{3:3}, at: reiserfs_xattr_set_handle+0x521/0xec0 fs/reiserfs/xattr.c:529
2 locks held by syz-executor.3/25811:
#0: ffff88803062e0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: do_remount fs/namespace.c:2804 [inline]
#0: ffff88803062e0e0 (&type->s_umount_key#53){+.+.}-{3:3}, at: path_mount+0xcd8/0x10c0 fs/namespace.c:3467
#1: ffff88801e7ec7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801e7ec7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x264/0xaa0 fs/fs-writeback.c:2723
2 locks held by kworker/0:26/26178:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc9000505fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
1 lock held by dhcpcd/28411:
#0: ffff888073dbe810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#0: ffff888073dbe810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:649 [inline]
#0: ffff888073dbe810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x93/0x260 net/socket.c:1365
2 locks held by dhcpcd/28432:
#0: ffff88802fade210 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#0: ffff88802fade210 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:649 [inline]
#0: ffff88802fade210 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x93/0x260 net/socket.c:1365
#1: ffffffff8d32c3b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#1: ffffffff8d32c3b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x455/0x860 kernel/rcu/tree_exp.h:946
3 locks held by syz-executor.3/28434:
2 locks held by syz-executor.1/28447:
1 lock held by dhcpcd/28450:
#0: ffff88802ca8c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1725 [inline]
#0: ffff88802ca8c130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2a/0xce0 net/packet/af_packet.c:3194
2 locks held by syz-executor.2/28455:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 28447 Comm: syz-executor.1 Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:PageTail include/linux/page-flags.h:290 [inline]
RIP: 0010:folio_flags include/linux/page-flags.h:317 [inline]
RIP: 0010:folio_test_head include/linux/page-flags.h:780 [inline]
RIP: 0010:folio_test_large include/linux/page-flags.h:801 [inline]
RIP: 0010:folio_order include/linux/mm.h:735 [inline]
RIP: 0010:shmem_add_to_page_cache+0x38b/0x2020 mm/shmem.c:700
Code: 35 c8 ff 49 8d 5f 51 48 89 d8 48 c1 e8 03 42 8a 04 28 84 c0 4c 8d b4 24 c0 00 00 00 0f 85 91 0d 00 00 44 8a 23 48 8b 44 24 30 <42> 80 3c 28 00 48 8b 5c 24 20 74 08 48 89 df e8 b1 ee 1d 00 48 8b
RSP: 0018:ffffc9001835f6e0 EFLAGS: 00000246
RAX: 1ffffd40001abbe1 RBX: 0000000000000000 RCX: ffff88801c84d7c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9001835f850 R08: ffffffff81c29738 R09: fffff940001abbe1
R10: fffff940001abbe1 R11: 1ffffd40001abbe0 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc9001835f7a0 R15: ffffea0000d5df00
FS: 00007f07de790700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6af4840000 CR3: 0000000030194000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
shmem_get_folio_gfp+0x1a47/0x3a30 mm/shmem.c:1950
shmem_get_folio mm/shmem.c:2051 [inline]
shmem_write_begin+0x133/0x480 mm/shmem.c:2543
generic_perform_write+0x2e4/0x5e0 mm/filemap.c:3772
__generic_file_write_iter+0x176/0x400 mm/filemap.c:3900
generic_file_write_iter+0xab/0x310 mm/filemap.c:3932
call_write_iter include/linux/fs.h:2189 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7dc/0xc50 fs/read_write.c:584
ksys_write+0x177/0x2a0 fs/read_write.c:637
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: 0033:0x7f07dda3de4f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48
RSP: 002b:00007f07de78ff10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f07dda3de4f
RDX: 0000000001ee4e54 RSI: 00007f07d41ff000 RDI: 0000000000000003
RBP: 00007f07d41ff000 R08: 0000000000000000 R09: 0000000000007e5e
R10: 0000000001ee4e54 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f07de78ffdc R14: 00007f07de78ffe0 R15: 0000000020000102