==================================================================
BUG: KASAN: use-after-free in hlist_add_head include/linux/list.h:930 [inline]
BUG: KASAN: use-after-free in enqueue_timer+0xae/0x480 kernel/time/timer.c:611
Write of size 8 at addr ffff8881441c8a00 by task kworker/u4:155/5982
CPU: 1 PID: 5982 Comm: kworker/u4:155 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: netns cleanup_net
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:88
dump_stack_lvl+0xee/0x150 lib/dump_stack.c:106
print_address_description+0x71/0x200 mm/kasan/report.c:316
print_report+0x4a/0x60 mm/kasan/report.c:420
kasan_report+0x122/0x150 mm/kasan/report.c:524
__asan_report_store8_noabort+0x17/0x20 mm/kasan/report_generic.c:356
hlist_add_head include/linux/list.h:930 [inline]
enqueue_timer+0xae/0x480 kernel/time/timer.c:611
__mod_timer+0x84a/0xbf0 kernel/time/timer.c:-1
mod_timer+0x1f/0x30 kernel/time/timer.c:1196
can_stat_update+0xb1a/0xbb0 net/can/proc.c:176
call_timer_fn+0x46/0x2a0 kernel/time/timer.c:1553
expire_timers kernel/time/timer.c:1604 [inline]
__run_timers+0x644/0x9b0 kernel/time/timer.c:1875
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1888
handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
__do_softirq kernel/softirq.c:680 [inline]
invoke_softirq kernel/softirq.c:497 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:preempt_schedule_irq+0x96/0x110 kernel/sched/core.c:7062
Code: 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 80 a9 58 fc fb bf 01 00 00 00 55 e5 ff ff fa bf 01 00 00 00 e8 2a ab 58 fc 65 48 8b 1d 62 5f
RSP: 0018:ffffc9000fbaf580 EFLAGS: 00000246
RAX: 1ffff11022e79e01 RBX: ffffc9000fbaf648 RCX: ffffffff87972100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc9000fbaf5f8 R08: dffffc0000000000 R09: ffffed1022e79ca9
R10: ffffed1022e79ca9 R11: 1ffff11022e79ca8 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001f75eb0
raw_irqentry_exit_cond_resched+0x29/0x30 kernel/entry/common.c:396
irqentry_exit+0x37/0x40 kernel/entry/common.c:439
sysvec_reschedule_ipi+0x78/0x80 arch/x86/kernel/smp.c:244
asm_sysvec_reschedule_ipi+0x1b/0x20 arch/x86/include/asm/idtentry.h:696
RIP: 0010:kernfs_find_ns+0x36f/0x4b0 fs/kernfs/dir.c:-1
Code: 10 00 00 00 eb 1a 44 89 ef 44 89 e6 e8 6a ee 91 ff 45 39 e5 73 36 e8 b0 ec 91 ff b8 08 00 00 00 49 01 c6 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 22 66 d6 ff 4d 8b 36 4d 85 f6 0f
RSP: 0018:ffffc9000fbaf6f0 EFLAGS: 00000a02
RAX: 1ffff11025fa18b3 RBX: ffffffff85ddab60 RCX: ffff8881173ce540
RDX: 0000000000000000 RSI: 00000000173147c9 RDI: 0000000013842a12
RBP: ffffc9000fbaf738 R08: ffffffff85ddab68 R09: ffffed102003602e
R10: ffffed102003602e R11: 1ffff1102003602d R12: 00000000173147c9
R13: 0000000013842a12 R14: ffff88812fd0c598 R15: dffffc0000000000
kernfs_find_and_get_ns+0x80/0x110 fs/kernfs/dir.c:906
kernfs_find_and_get include/linux/kernfs.h:614 [inline]
sysfs_remove_group+0x6c/0x2a0 fs/sysfs/group.c:276
sysfs_remove_groups+0x56/0xb0 fs/sysfs/group.c:312
device_remove_groups drivers/base/core.c:2760 [inline]
device_remove_attrs+0x1a7/0x250 drivers/base/core.c:2974
device_del+0x69c/0xeb0 drivers/base/core.c:3885
netdev_unregister_kobject+0x186/0x250 net/core/net-sysfs.c:1981
unregister_netdevice_many+0x135b/0x1820 net/core/dev.c:10994
ip6gre_exit_batch_net+0x5a8/0x5f0 net/ipv6/ip6_gre.c:1670
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x62d/0xb00 net/core/net_namespace.c:604
process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Allocated by task 10742:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:379 [inline]
__kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:388
kasan_kmalloc include/linux/kasan.h:212 [inline]
__do_kmalloc_node mm/slab_common.c:938 [inline]
__kmalloc+0xb1/0x1e0 mm/slab_common.c:951
kmalloc include/linux/slab.h:568 [inline]
kzalloc include/linux/slab.h:699 [inline]
hci_alloc_dev_priv+0x27/0x1bd0 net/bluetooth/hci_core.c:2433
hci_alloc_dev include/net/bluetooth/hci_core.h:1505 [inline]
hci_uart_register_dev drivers/bluetooth/hci_ldisc.c:641 [inline]
hci_uart_set_proto drivers/bluetooth/hci_ldisc.c:719 [inline]
hci_uart_tty_ioctl+0x3d6/0xa20 drivers/bluetooth/hci_ldisc.c:774
tty_ioctl+0x8ef/0xc60 drivers/tty/tty_io.c:2785
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 10742:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
____kasan_slab_free+0x132/0x180 mm/kasan/common.c:241
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:249
kasan_slab_free include/linux/kasan.h:178 [inline]
slab_free_hook mm/slub.c:1750 [inline]
slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
slab_free mm/slub.c:3712 [inline]
__kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
kfree+0x6f/0xf0 mm/slab_common.c:990
hci_release_dev+0x12a3/0x13b0 net/bluetooth/hci_core.c:2761
bt_host_release+0x82/0x90 net/bluetooth/hci_sysfs.c:85
device_release+0xa4/0x1d0 drivers/base/core.c:-1
kobject_cleanup lib/kobject.c:681 [inline]
kobject_release lib/kobject.c:712 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x19d/0x280 lib/kobject.c:729
put_device+0x1f/0x30 drivers/base/core.c:3806
hci_dev_put include/net/bluetooth/hci_core.h:1465 [inline]
hci_dev_cmd+0x265/0x720 net/bluetooth/hci_core.c:795
hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
sock_do_ioctl+0x101/0x310 net/socket.c:1194
sock_ioctl+0x4d8/0x6e0 net/socket.c:1311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Last potentially related work creation:
kasan_save_stack+0x3a/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
insert_work+0x51/0x300 kernel/workqueue.c:1368
__queue_work+0x9b1/0xd30 kernel/workqueue.c:1527
queue_work_on+0xd2/0x140 kernel/workqueue.c:1555
queue_work include/linux/workqueue.h:510 [inline]
hci_cmd_sync_run net/bluetooth/hci_sync.c:140 [inline]
__hci_cmd_sync_sk+0xa3e/0xcf0 net/bluetooth/hci_sync.c:162
__hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:253 [inline]
__hci_cmd_sync_status net/bluetooth/hci_sync.c:277 [inline]
hci_cmd_sync_status+0x53/0x120 net/bluetooth/hci_sync.c:288
hci_dev_cmd+0x628/0x720 net/bluetooth/hci_core.c:-1
hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
sock_do_ioctl+0x101/0x310 net/socket.c:1194
sock_ioctl+0x4d8/0x6e0 net/socket.c:1311
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0x12f/0x1b0 fs/ioctl.c:856
__x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:856
x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Second to last potentially related work creation:
kasan_save_stack+0x3a/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb6/0xc0 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
insert_work+0x51/0x300 kernel/workqueue.c:1368
__queue_work+0x9b1/0xd30 kernel/workqueue.c:1527
queue_work_on+0xd2/0x140 kernel/workqueue.c:1555
queue_work include/linux/workqueue.h:510 [inline]
hci_cmd_timeout+0x191/0x200 net/bluetooth/hci_core.c:1468
process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
The buggy address belongs to the object at ffff8881441c8000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2560 bytes inside of
8192-byte region [ffff8881441c8000, ffff8881441ca000)
The buggy address belongs to the physical page:
page:ffffea0005107200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1441c8
head:ffffea0005107200 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea0004eaa000 dead000000000006 ffff888100043500
raw: 0000000000000000 0000000000020002 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 9856, tgid 9852 (syz.2.2347), ts 774572079701, free_ts 757546718325
set_page_owner include/linux/page_owner.h:33 [inline]
post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2643
prep_new_page+0x1c/0x110 mm/page_alloc.c:2650
get_page_from_freelist+0x2c7b/0x2cf0 mm/page_alloc.c:4554
__alloc_pages+0x1c3/0x450 mm/page_alloc.c:5868
alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
allocate_slab mm/slub.c:1967 [inline]
new_slab+0x98/0x3d0 mm/slub.c:2020
___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
__slab_alloc+0x5e/0xa0 mm/slub.c:3263
slab_alloc_node mm/slub.c:3348 [inline]
__kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423
__do_kmalloc_node mm/slab_common.c:937 [inline]
__kmalloc_node_track_caller+0xa0/0x1e0 mm/slab_common.c:958
kmalloc_reserve net/core/skbuff.c:449 [inline]
pskb_expand_head+0x1b0/0x1210 net/core/skbuff.c:1851
__pskb_pull_tail+0xb1/0x1570 net/core/skbuff.c:2398
__skb_linearize include/linux/skbuff.h:3764 [inline]
skb_linearize include/linux/skbuff.h:3776 [inline]
tipc_msg_reverse+0x78/0x940 net/tipc/msg.c:631
tipc_sk_filter_rcv+0xbf3/0x2c80 net/tipc/socket.c:2376
tipc_sk_enqueue net/tipc/socket.c:2445 [inline]
tipc_sk_rcv+0x7d9/0x2cc0 net/tipc/socket.c:2497
tipc_sk_mcast_rcv+0xe08/0xed0 net/tipc/socket.c:1268
page last free stack trace:
reset_page_owner include/linux/page_owner.h:26 [inline]
free_pages_prepare mm/page_alloc.c:1551 [inline]
free_pcp_prepare mm/page_alloc.c:1625 [inline]
free_unref_page_prepare+0x742/0x750 mm/page_alloc.c:3589
free_unref_page+0x8f/0x530 mm/page_alloc.c:3687
free_the_page mm/page_alloc.c:836 [inline]
__free_pages+0x67/0x100 mm/page_alloc.c:5957
__free_slab+0xca/0x1a0 mm/slub.c:2044
free_slab mm/slub.c:2059 [inline]
discard_slab mm/slub.c:2065 [inline]
__unfreeze_partials+0x160/0x190 mm/slub.c:2614
put_cpu_partial+0xa9/0x100 mm/slub.c:2690
__slab_free+0x1c4/0x280 mm/slub.c:3589
do_slab_free mm/slub.c:3666 [inline]
___cache_free+0xbf/0xd0 mm/slub.c:3722
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0xc6/0x140 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x14a/0x170 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x24/0x80 mm/kasan/common.c:310
kasan_slab_alloc include/linux/kasan.h:202 [inline]
slab_post_alloc_hook+0x4f/0x2d0 mm/slab.h:768
slab_alloc_node mm/slub.c:3382 [inline]
kmem_cache_alloc_node+0x181/0x340 mm/slub.c:3429
__alloc_skb+0xea/0x4b0 net/core/skbuff.c:508
alloc_skb_fclone include/linux/skbuff.h:1340 [inline]
tcp_stream_alloc_skb+0x47/0x360 net/ipv4/tcp.c:867
tcp_sendmsg_locked+0xd10/0x3d90 net/ipv4/tcp.c:1330
Memory state around the buggy address:
ffff8881441c8900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881441c8980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881441c8a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8881441c8a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881441c8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 5982 Comm: kworker/u4:155 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: netns cleanup_net
RIP: 0010:__queue_work+0x575/0xd30 kernel/workqueue.c:-1
Code: 39 2b 0f 84 b9 00 00 00 e8 b8 e2 28 00 4c 89 ff e8 00 26 ad 03 49 bc 00 00 00 00 00 fc ff df 4c 8b 6d d0 4c 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ef e8 1c 5c 6d 00 49 8b 7d 00 e8 e3 21
RSP: 0018:ffffc900001b0c70 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff8881173ce540
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc900001b0d08 R08: fffffffffffffffb R09: 0000000000000007
R10: ffffed1028839139 R11: 1ffff11028839139 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8881441c89c8 R15: 0000000000000008
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61c3bdc4c8 CR3: 0000000116b85000 CR4: 00000000003506a0
Call Trace:
delayed_work_timer_fn+0x61/0x80 kernel/workqueue.c:1653
call_timer_fn+0x46/0x2a0 kernel/time/timer.c:1553
expire_timers kernel/time/timer.c:1599 [inline]
__run_timers+0x672/0x9b0 kernel/time/timer.c:1875
run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1888
handle_softirqs+0x1d7/0x600 kernel/softirq.c:642
__do_softirq kernel/softirq.c:680 [inline]
invoke_softirq kernel/softirq.c:497 [inline]
__irq_exit_rcu+0x52/0xf0 kernel/softirq.c:729
irq_exit_rcu+0x9/0x10 kernel/softirq.c:741
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1118
asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:preempt_schedule_irq+0x96/0x110 kernel/sched/core.c:7062
Code: 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 4d bf 01 00 00 00 e8 80 a9 58 fc fb bf 01 00 00 00 55 e5 ff ff fa bf 01 00 00 00 e8 2a ab 58 fc 65 48 8b 1d 62 5f
RSP: 0018:ffffc9000fbaf580 EFLAGS: 00000246
RAX: 1ffff11022e79e01 RBX: ffffc9000fbaf648 RCX: ffffffff87972100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc9000fbaf5f8 R08: dffffc0000000000 R09: ffffed1022e79ca9
R10: ffffed1022e79ca9 R11: 1ffff11022e79ca8 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001f75eb0
raw_irqentry_exit_cond_resched+0x29/0x30 kernel/entry/common.c:396
irqentry_exit+0x37/0x40 kernel/entry/common.c:439
sysvec_reschedule_ipi+0x78/0x80 arch/x86/kernel/smp.c:244
asm_sysvec_reschedule_ipi+0x1b/0x20 arch/x86/include/asm/idtentry.h:696
RIP: 0010:kernfs_find_ns+0x36f/0x4b0 fs/kernfs/dir.c:-1
Code: 10 00 00 00 eb 1a 44 89 ef 44 89 e6 e8 6a ee 91 ff 45 39 e5 73 36 e8 b0 ec 91 ff b8 08 00 00 00 49 01 c6 4c 89 f0 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 f7 e8 22 66 d6 ff 4d 8b 36 4d 85 f6 0f
RSP: 0018:ffffc9000fbaf6f0 EFLAGS: 00000a02
RAX: 1ffff11025fa18b3 RBX: ffffffff85ddab60 RCX: ffff8881173ce540
RDX: 0000000000000000 RSI: 00000000173147c9 RDI: 0000000013842a12
RBP: ffffc9000fbaf738 R08: ffffffff85ddab68 R09: ffffed102003602e
R10: ffffed102003602e R11: 1ffff1102003602d R12: 00000000173147c9
R13: 0000000013842a12 R14: ffff88812fd0c598 R15: dffffc0000000000
kernfs_find_and_get_ns+0x80/0x110 fs/kernfs/dir.c:906
kernfs_find_and_get include/linux/kernfs.h:614 [inline]
sysfs_remove_group+0x6c/0x2a0 fs/sysfs/group.c:276
sysfs_remove_groups+0x56/0xb0 fs/sysfs/group.c:312
device_remove_groups drivers/base/core.c:2760 [inline]
device_remove_attrs+0x1a7/0x250 drivers/base/core.c:2974
device_del+0x69c/0xeb0 drivers/base/core.c:3885
netdev_unregister_kobject+0x186/0x250 net/core/net-sysfs.c:1981
unregister_netdevice_many+0x135b/0x1820 net/core/dev.c:10994
ip6gre_exit_batch_net+0x5a8/0x5f0 net/ipv6/ip6_gre.c:1670
ops_exit_list net/core/net_namespace.c:177 [inline]
cleanup_net+0x62d/0xb00 net/core/net_namespace.c:604
process_one_work+0x71f/0xc40 kernel/workqueue.c:2302
worker_thread+0xa29/0x11f0 kernel/workqueue.c:2449
kthread+0x281/0x320 kernel/kthread.c:386
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__queue_work+0x575/0xd30 kernel/workqueue.c:-1
Code: 39 2b 0f 84 b9 00 00 00 e8 b8 e2 28 00 4c 89 ff e8 00 26 ad 03 49 bc 00 00 00 00 00 fc ff df 4c 8b 6d d0 4c 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ef e8 1c 5c 6d 00 49 8b 7d 00 e8 e3 21
RSP: 0018:ffffc900001b0c70 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff8881173ce540
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc900001b0d08 R08: fffffffffffffffb R09: 0000000000000007
R10: ffffed1028839139 R11: 1ffff11028839139 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8881441c89c8 R15: 0000000000000008
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f61c3bdc4c8 CR3: 0000000116b85000 CR4: 00000000003506a0
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 9c 8f 44 24 20 f6 add %bl,-0x9dfdbbc(%rdi,%rcx,4)
9: 44 24 21 rex.R and $0x21,%al
c: 02 74 0b 0f add 0xf(%rbx,%rcx,1),%dh
10: 0b 48 f7 or -0x9(%rax),%ecx
13: 03 08 add (%rax),%ecx
15: 00 00 add %al,(%rax)
17: 00 74 4d bf add %dh,-0x41(%rbp,%rcx,2)
1b: 01 00 add %eax,(%rax)
1d: 00 00 add %al,(%rax)
1f: e8 80 a9 58 fc call 0xfc58a9a4
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 55 e5 ff ff call 0xffffe584 <-- trapping instruction
2f: fa cli
30: bf 01 00 00 00 mov $0x1,%edi
35: e8 2a ab 58 fc call 0xfc58ab64
3a: 65 gs
3b: 48 rex.W
3c: 8b .byte 0x8b
3d: 1d .byte 0x1d
3e: 62 .byte 0x62
3f: 5f pop %rdi