INFO: task kworker/u32:1:13 blocked for more than 143 seconds.
Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u32:1 state:D
stack:24328 pid:13 tgid:13 ppid:2 task_flags:0x4208060 flags:0x00004000
Workqueue: writeback wb_workfn
(flush-7:0)
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1190/0x5de0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:7058
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
__mutex_lock_common kernel/locking/mutex.c:676 [inline]
__mutex_lock+0x82a/0x10b0 kernel/locking/mutex.c:760
hfsplus_find_init+0x17b/0x1f0 fs/hfsplus/bfind.c:28
hfsplus_cat_write_inode+0x255/0x7e0 fs/hfsplus/inode.c:592
hfsplus_write_inode fs/hfsplus/super.c:161 [inline]
hfsplus_write_inode+0x91/0x4f0 fs/hfsplus/super.c:148
write_inode fs/fs-writeback.c:1525 [inline]
__writeback_single_inode+0xb3b/0xfb0 fs/fs-writeback.c:1745
writeback_sb_inodes+0x60d/0xfa0 fs/fs-writeback.c:1976
__writeback_inodes_wb+0xf8/0x2d0 fs/fs-writeback.c:2047
wb_writeback+0x7f3/0xb70 fs/fs-writeback.c:2158
wb_check_old_data_flush fs/fs-writeback.c:2262 [inline]
wb_do_writeback fs/fs-writeback.c:2315 [inline]
wb_workfn+0x8ca/0xbe0 fs/fs-writeback.c:2343
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Showing all locks held in the system:
4 locks held by kworker/u32:1/13:
#0: ffff888100adf148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3211
#1: ffffc90000107d10 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3212
#2: ffff88802684e0e0 (&type->s_umount_key#66){.+.+}-{4:4}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:563
#3: ffff8881052d40b0 (&tree->tree_lock){+.+.}-{4:4}, at: hfsplus_find_init+0x17b/0x1f0 fs/hfsplus/bfind.c:28
1 lock held by khungtaskd/41:
#0: ffffffff8e5c11e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e5c11e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e5c11e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6775
2 locks held by getty/5767:
#0: ffff8880262150a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900033fe2f0 (&ldata->atomic_read_lock
){+.+.}-{4:4}
, at: n_tty_read+0x41b/0x14f0 drivers/tty/n_tty.c:2222
8 locks held by syz-executor.0/6174:
3 locks held by syz-executor.0/26691:
#0:
ffff88806a53a318
(&rq->__lock
){-.-.}-{2:2}
, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:636
#1: ffff88806a524088 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:220 [inline]
#1: ffff88806a524088 (psi_seq){-.-.}-{0:0}, at: __schedule+0x1861/0x5de0 kernel/sched/core.c:6955
#2:
ffff8880261528b8
(
&sig->wait_chldexit){....}-{3:3}
, at: __wake_up_common_lock kernel/sched/wait.c:124 [inline]
, at: __wake_up_sync_key+0x1c/0x50 kernel/sched/wait.c:192
=============================================
NMI backtrace for cpu 3
CPU: 3 UID: 0 PID: 41 Comm: khungtaskd Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
watchdog+0xf0e/0x1260 kernel/hung_task.c:491
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 3 to CPUs 0-2:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__orc_find+0x8e/0xf0 arch/x86/kernel/unwind_orc.c:106
Code: 00 48 89 da 48 c1 ea 03 0f b6 34 0a 48 89 da 83 e2 07 83 c2 03 40 38 f2 7c 05 40 84 f6 75 4b 48 63 13 48 01 da 49 39 d5 73 af <4c> 8d 63 fc 49 39 ec 73 b2 4d 29 f7 49 c1 ff 02 4b 8d 14 7f 48 8d
RSP: 0018:ffffc900001278b8 EFLAGS: 00000283
RAX: ffffffff913b291c RBX: ffffffff90b88754 RCX: dffffc0000000000
RDX: ffffffff812c10b0 RSI: 0000000000000000 RDI: ffffffff90b886f8
RBP: ffffffff90b8874c R08: ffffffff913b29be R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000002c10 R12: ffffffff90b88760
R13: ffffffff812c1099 R14: ffffffff90b886f8 R15: ffffffff90b88748
FS: 0000000000000000(0000) GS:ffff8880d66bd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f733727fc00 CR3: 000000000e380000 CR4: 0000000000352ef0
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x2ec/0x20a0 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x84/0x1a0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0x7d5/0x10f0 mm/page_alloc.c:2895
rcu_do_batch kernel/rcu/tree.c:2605 [inline]
rcu_core+0x79c/0x1530 kernel/rcu/tree.c:2861
handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
run_ksoftirqd kernel/softirq.c:968 [inline]
run_ksoftirqd+0x3a/0x60 kernel/softirq.c:960
smpboot_thread_fn+0x3f4/0xae0 kernel/smpboot.c:160
kthread+0x3c5/0x780 kernel/kthread.c:463
ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
NMI backtrace for cpu 2
CPU: 2 UID: 0 PID: 6174 Comm: syz-executor.0 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:io_serial_in+0x87/0xb0 drivers/tty/serial/8250/8250_port.c:401
Code: 90 57 fc 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1a 66 03 5d 40 89 da ec <5b> 0f b6 c0 5d 41 5c c3 cc cc cc cc e8 28 e8 bd fc eb a2 e8 b1 e8
RSP: 0018:ffffc90004427338 EFLAGS: 00000006
RAX: dffffc0000000005 RBX: 00000000000003f9 RCX: 0000000000000000
RDX: 00000000000003f9 RSI: ffffffff85640290 RDI: ffffffff9b10cfa0
RBP: ffffffff9b10cf60 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff9b10cfb0 R14: ffffffff9b10cf60 R15: ffffffff9b10d220
FS: 00007f6babd6b6c0(0000) GS:ffff8880d68bd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f733727fc00 CR3: 0000000033bfd000 CR4: 0000000000352ef0
Call Trace:
serial_port_in include/linux/serial_core.h:793 [inline]
serial8250_console_write+0x246/0x1890 drivers/tty/serial/8250/8250_port.c:3360
console_emit_next_record kernel/printk/printk.c:3138 [inline]
console_flush_all+0x7fe/0xc60 kernel/printk/printk.c:3226
__console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
_printk+0xc7/0x100 kernel/printk/printk.c:2475
is_bnode_offset_valid fs/hfsplus/bnode.c:27 [inline]
hfsplus_bnode_read+0x4b9/0x690 fs/hfsplus/bnode.c:69
hfsplus_bnode_read_u16 fs/hfsplus/bnode.c:101 [inline]
hfsplus_bnode_dump+0x13f/0x3c0 fs/hfsplus/bnode.c:403
hfsplus_brec_remove+0x3d2/0x4e0 fs/hfsplus/brec.c:229
__hfsplus_delete_attr+0x2a0/0x3b0 fs/hfsplus/attributes.c:299
hfsplus_delete_all_attrs+0x26f/0x330 fs/hfsplus/attributes.c:378
hfsplus_delete_cat+0x851/0xde0 fs/hfsplus/catalog.c:425
hfsplus_unlink+0x212/0x7f0 fs/hfsplus/dir.c:385
vfs_unlink+0x2fe/0x9b0 fs/namei.c:4586
do_unlinkat+0x4c5/0x6a0 fs/namei.c:4650
__do_sys_unlink fs/namei.c:4696 [inline]
__se_sys_unlink fs/namei.c:4694 [inline]
__x64_sys_unlink+0xc5/0x110 fs/namei.c:4694
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6bab07dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6babd6b0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f6bab1abf80 RCX: 00007f6bab07dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007f6bab0ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6bab1abf80 R15: 00007ffe08bcf1d8
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6102 Comm: syz-execprog Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0033:0x99caf7
Code: 48 01 d6 49 83 c0 fc 90 8b 12 89 54 24 6c 4c 89 84 24 d0 00 00 00 48 89 bc 24 d8 00 00 00 48 89 b4 24 c8 00 00 00 48 8b 4b 10 <48> 89 8c 24 90 00 00 00 48 8d 05 1a 37 13 00 48 89 cb e8 12 98 ab
RSP: 002b:000000c00141bb68 EFLAGS: 00000207
RAX: 000000c000504090 RBX: 000000c0011d8080 RCX: 0000000000000002
RDX: 0000000000000002 RSI: 00007f1ae96e0004 RDI: 0000000000fffffc
RBP: 000000c00141bd98 R08: 0000000000fffffc R09: 0000000001000000
R10: 0000000000000080 R11: 0000000000ee6fe0 R12: 000000c00141bbe8
R13: ffffffffffffffff R14: 000000c001394000 R15: 0000000000000000
FS: 000000c000060898 GS: 0000000000000000