INFO: task syz-executor.1:15344 blocked for more than 143 seconds.
Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:24584 pid:15344 ppid:5121 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
io_schedule+0x8c/0x100 kernel/sched/core.c:8871
bit_wait_io+0x12/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xbd/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x1d4/0x250 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer fs/buffer.c:69 [inline]
lock_buffer include/linux/buffer_head.h:397 [inline]
write_dirty_buffer+0xd0/0x1a0 fs/buffer.c:2713
fsync_buffers_list fs/buffer.c:702 [inline]
sync_mapping_buffers+0x562/0xf10 fs/buffer.c:548
ext4_fsync_nojournal fs/ext4/fsync.c:86 [inline]
ext4_sync_file+0x679/0xe40 fs/ext4/fsync.c:170
generic_write_sync include/linux/fs.h:2885 [inline]
ext4_buffered_write_iter+0x30a/0x3a0 fs/ext4/file.c:292
ext4_file_write_iter+0x1d6/0x1910
do_iter_write+0x6ea/0xc50 fs/read_write.c:861
iter_file_splice_write+0x80a/0xfa0 fs/splice.c:686
do_splice_from fs/splice.c:764 [inline]
direct_splice_actor+0xe7/0x1c0 fs/splice.c:931
splice_direct_to_actor+0x4c4/0xbd0 fs/splice.c:886
do_splice_direct+0x283/0x3d0 fs/splice.c:974
do_sendfile+0x620/0xff0 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f148dc8c0f9
RSP: 002b:00007f148ea05168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f148ddabf80 RCX: 00007f148dc8c0f9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000007
RBP: 00007f148dce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000001ffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc33d89ef R14: 00007f148ea05300 R15: 0000000000022000
INFO: task syz-executor.1:15349 blocked for more than 143 seconds.
Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:24704 pid:15349 ppid:5121 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
io_schedule+0x8c/0x100 kernel/sched/core.c:8871
bit_wait_io+0x12/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xbd/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x1d4/0x250 kernel/sched/wait_bit.c:117
wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
__lock_buffer fs/buffer.c:69 [inline]
lock_buffer include/linux/buffer_head.h:397 [inline]
__sync_dirty_buffer+0x120/0x380 fs/buffer.c:2732
__ext4_handle_dirty_metadata+0x2a6/0x820 fs/ext4/ext4_jbd2.c:387
ext4_convert_inline_data_nolock+0xaba/0xd80 fs/ext4/inline.c:1255
ext4_convert_inline_data+0x4da/0x620 fs/ext4/inline.c:2066
ext4_fallocate+0x14d/0x2300 fs/ext4/extents.c:4701
vfs_fallocate+0x54b/0x6b0 fs/open.c:323
ksys_fallocate fs/open.c:346 [inline]
__do_sys_fallocate fs/open.c:354 [inline]
__se_sys_fallocate fs/open.c:352 [inline]
__x64_sys_fallocate+0xbd/0x100 fs/open.c:352
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f148dc8c0f9
RSP: 002b:00007f148e9e4168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f148ddac050 RCX: 00007f148dc8c0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007f148dce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000001000f4 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc33d89ef R14: 00007f148e9e4300 R15: 0000000000022000
INFO: task syz-executor.1:15357 blocked for more than 144 seconds.
Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28280 pid:15357 ppid:5121 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
rwsem_down_read_slowpath+0x5f4/0x950 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x290 kernel/locking/rwsem.c:1260
inode_lock_shared include/linux/fs.h:766 [inline]
ext4_dio_read_iter fs/ext4/file.c:78 [inline]
ext4_file_read_iter+0x294/0x670 fs/ext4/file.c:145
call_read_iter include/linux/fs.h:2183 [inline]
generic_file_splice_read+0x240/0x640 fs/splice.c:309
do_splice_to fs/splice.c:793 [inline]
splice_direct_to_actor+0x40c/0xbd0 fs/splice.c:865
do_splice_direct+0x283/0x3d0 fs/splice.c:974
do_sendfile+0x620/0xff0 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1309
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f148dc8c0f9
RSP: 002b:00007f148e9c3168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f148ddac120 RCX: 00007f148dc8c0f9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000008
RBP: 00007f148dce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc33d89ef R14: 00007f148e9c3300 R15: 0000000000022000
INFO: task syz-executor.1:15360 blocked for more than 144 seconds.
Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27224 pid:15360 ppid:5121 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
rwsem_down_write_slowpath+0xfcf/0x14a0 kernel/locking/rwsem.c:1190
inode_lock include/linux/fs.h:756 [inline]
process_measurement+0x42a/0x1c30 security/integrity/ima/ima_main.c:241
ima_file_check+0xec/0x170 security/integrity/ima/ima_main.c:519
do_open fs/namei.c:3559 [inline]
path_openat+0x265d/0x2e40 fs/namei.c:3714
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_open fs/open.c:1334 [inline]
__se_sys_open fs/open.c:1330 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1330
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f148dc8c0f9
RSP: 002b:00007f148e9a2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f148ddac1f0 RCX: 00007f148dc8c0f9
RDX: 0000000000000000 RSI: 000000000014d27e RDI: 0000000020000180
RBP: 00007f148dce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffc33d89ef R14: 00007f148e9a2300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25950 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf26150 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8cf25780 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4740:
#0: ffff88814b798098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:5/5172:
#0: ffff88814518a138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc9000553fd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
#2: ffff88813ff300e0 (&type->s_umount_key#41){.+.+}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:415
3 locks held by kworker/u4:11/14285:
#0: ffff8880b983b1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:537
#1: ffffc9000d02fd20 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
#2: ffff8880b9829558 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:999
1 lock held by syz-executor.1/15344:
#0: ffff88807766a460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x5fb/0xff0 fs/read_write.c:1254
3 locks held by syz-executor.1/15349:
#0: ffff88807766a460 (sb_writers#4){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2938 [inline]
#0: ffff88807766a460 (sb_writers#4){.+.+}-{0:0}, at: vfs_fallocate+0x4be/0x6b0 fs/open.c:322
#1: ffff8880333fa218 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880333fa218 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_fallocate+0x145/0x2300 fs/ext4/extents.c:4700
#2: ffff8880333f9ee0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff8880333f9ee0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x3b6/0x620 fs/ext4/inline.c:2064
2 locks held by syz-executor.1/15357:
#0: ffff88807766a460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x5fb/0xff0 fs/read_write.c:1254
#1: ffff8880333fa218 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#1: ffff8880333fa218 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_dio_read_iter fs/ext4/file.c:78 [inline]
#1: ffff8880333fa218 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_file_read_iter+0x294/0x670 fs/ext4/file.c:145
2 locks held by syz-executor.1/15360:
#0: ffff88807766a460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff8880333fa218 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880333fa218 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: process_measurement+0x42a/0x1c30 security/integrity/ima/ima_main.c:241
2 locks held by syz-executor.3/15459:
#0: ffff888031d1a460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff8880333c8e08 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880333c8e08 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: process_measurement+0x42a/0x1c30 security/integrity/ima/ima_main.c:241
2 locks held by syz-executor.3/15470:
#0: ffff888031d1a460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x5fb/0xff0 fs/read_write.c:1254
#1: ffff8880333c8e08 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#1: ffff8880333c8e08 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_dio_read_iter fs/ext4/file.c:78 [inline]
#1: ffff8880333c8e08 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_file_read_iter+0x294/0x670 fs/ext4/file.c:145
3 locks held by syz-executor.3/15471:
#0: ffff888031d1a460 (sb_writers#4){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2938 [inline]
#0: ffff888031d1a460 (sb_writers#4){.+.+}-{0:0}, at: vfs_fallocate+0x4be/0x6b0 fs/open.c:322
#1: ffff8880333c8e08 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880333c8e08 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_fallocate+0x145/0x2300 fs/ext4/extents.c:4700
#2: ffff8880333c8ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff8880333c8ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x3b6/0x620 fs/ext4/inline.c:2064
1 lock held by udevd/15622:
#0: ffff88801f75a4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x148/0xa30 block/bdev.c:813
1 lock held by syz-executor.5/16027:
#0: ffff88801f75a4c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1a9/0x320 block/bdev.c:1052
1 lock held by syz-executor.5/16079:
#0: ffff88801f75a4c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1a9/0x320 block/bdev.c:1052
2 locks held by syz-executor.5/16082:
#0: ffff888031d1a0e0 (&type->s_umount_key#30){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:722
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x294/0xa70 fs/fs-writeback.c:2723
2 locks held by syz-executor.5/16083:
#0: ffff888031d1a0e0 (&type->s_umount_key#30){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:722
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x294/0xa70 fs/fs-writeback.c:2723
2 locks held by syz-executor.5/16085:
#0: ffff888031d1a0e0 (&type->s_umount_key#30){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:722
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x294/0xa70 fs/fs-writeback.c:2723
2 locks held by syz-executor.5/16086:
#0: ffff888031d1a0e0 (&type->s_umount_key#30){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:722
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x294/0xa70 fs/fs-writeback.c:2723
2 locks held by syz-executor.5/16088:
#0: ffff888031d1a0e0 (&type->s_umount_key#30){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:722
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801f7687d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x294/0xa70 fs/fs-writeback.c:2723
1 lock held by syz-executor.3/16098:
#0: ffff88801f75a4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x148/0xa30 block/bdev.c:813
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e5/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b4/0x3f0 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+0xf70/0xfb0 kernel/hung_task.c:377
kthread+0x270/0x300 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: 14285 Comm: kworker/u4:11 Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_preemption_disabled+0x63/0x110 lib/smp_processor_id.c:19
Code: 44 24 08 0f 85 c7 00 00 00 89 d8 48 83 c4 10 5b 41 5c 41 5e 41 5f c3 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 <74> c9 49 89 f6 49 89 ff 65 4c 8b 25 7d 2e 5d 75 41 f6 44 24 2f 04
RSP: 0018:ffffc9000d02fa08 EFLAGS: 00000046
RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffffc9000d02fa03
RDX: 0000000000000002 RSI: ffffffff8aea80c0 RDI: ffffffff8b382400
RBP: ffffc9000d02fb80 R08: dffffc0000000000 R09: fffffbfff1ca4f16
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92001a05f54
R13: 0000000000000246 R14: ffffc9000d02fad0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fce2e8de100 CR3: 000000000cc8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:466 [inline]
lock_release+0x646/0xaa0 kernel/locking/lockdep.c:5690
rcu_read_unlock include/linux/rcupdate.h:797 [inline]
batadv_nc_process_nc_paths+0x288/0x310 net/batman-adv/network-coding.c:699
batadv_nc_worker+0x3a3/0x580 net/batman-adv/network-coding.c:728
process_one_work+0x8fa/0x1370 kernel/workqueue.c:2289
worker_thread+0xa63/0x1210 kernel/workqueue.c:2436
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308