==================================================================
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 ffff888125b30a00 by task syz.7.2950/10525
CPU: 0 PID: 10525 Comm: syz.7.2950 Tainted: G W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
__dump_stack+0x21/0x24 lib/dump_stack.c:88
dump_stack_lvl+0x110/0x170 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
internal_add_timer kernel/time/timer.c:640 [inline]
__mod_timer+0x84c/0xc00 kernel/time/timer.c:1137
mod_timer+0x1f/0x30 kernel/time/timer.c:1196
tipc_disc_timeout+0x643/0x860 net/tipc/discover.c:331
call_timer_fn+0x46/0x2a0 kernel/time/timer.c:1553
expire_timers kernel/time/timer.c:1604 [inline]
__run_timers+0x65b/0x9f0 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:console_emit_next_record+0x8a1/0xab0 kernel/printk/printk.c:2797
Code: de 48 81 e6 00 02 00 00 31 ff e8 4a 89 19 00 48 81 e3 00 02 00 00 75 07 e8 7c 84 19 00 eb 06 e8 75 84 19 00 fb 0f b6 5c 24 17 <66> 43 c7 44 25 20 f8 f8 43 c6 44 25 22 f8 4f 89 74 25 10 66 43 c7
RSP: 0000:ffffc9000194f160 EFLAGS: 00000293
RAX: ffffffff8157e79b RBX: 0000000000000001 RCX: ffff888129049440
RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000
RBP: ffffc9000194f350 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000329e1c R12: dffffc0000000000
R13: 1ffff92000329e38 R14: f8f8f8f8f8f8f8f8 R15: ffffc9000194f39f
console_flush_all kernel/printk/printk.c:-1 [inline]
console_unlock+0x246/0x560 kernel/printk/printk.c:2917
vprintk_emit+0x14d/0x420 kernel/printk/printk.c:2308
vprintk_default+0x26/0x30 kernel/printk/printk.c:2323
vprintk+0x7a/0x80 kernel/printk/printk_safe.c:45
_printk+0xda/0x128 kernel/printk/printk.c:2333
bio_check_eod block/blk-core.c:530 [inline]
submit_bio_noacct+0xfd1/0x1850 block/blk-core.c:744
submit_bio+0x1b5/0x2a0 block/blk-core.c:846
f2fs_submit_write_bio+0x5ba/0x840 fs/f2fs/data.c:577
__submit_merged_bio+0x13a/0x490 fs/f2fs/data.c:592
__f2fs_submit_merged_write fs/f2fs/data.c:685 [inline]
__submit_merged_write_cond+0x3f1/0x540 fs/f2fs/data.c:707
f2fs_submit_merged_write_cond+0x38/0x50 fs/f2fs/data.c:724
f2fs_wait_on_page_writeback+0x208/0x330 fs/f2fs/segment.c:3788
f2fs_vm_page_mkwrite+0xaad/0x1100 fs/f2fs/file.c:131
do_page_mkwrite mm/memory.c:3036 [inline]
wp_page_shared+0x505/0x8d0 mm/memory.c:3429
do_wp_page+0xde4/0xfc0 mm/memory.c:3581
handle_pte_fault mm/memory.c:5189 [inline]
__handle_mm_fault mm/memory.c:5313 [inline]
handle_mm_fault+0x1124/0x26c0 mm/memory.c:5453
do_user_addr_fault+0x905/0x1050 arch/x86/mm/fault.c:1323
handle_page_fault arch/x86/mm/fault.c:1466 [inline]
exc_page_fault+0x51/0xb0 arch/x86/mm/fault.c:1522
asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f3b0ac684b8
Code: 25 00 00 00 00 48 8d b8 d8 fe ff ff 4c 89 74 24 50 e8 1c 3b 0d 00 85 c0 75 13 48 8b 84 24 80 00 00 00 48 8b b4 24 c0 00 00 00 <48> 89 30 64 f0 83 2c 25 a0 ff ff ff 01 4c 8b 74 24 50 e9 91 f5 ff
RSP: 002b:00007ffc48b12b20 EFLAGS: 00010246
RAX: 00002000000015c0 RBX: 0000000000000002 RCX: 0000000000000007
RDX: cfbeb5b05b44369e RSI: 0000200000000080 RDI: 0000555578f3a3d8
RBP: fffffffffffffffe R08: 0000001b2d820000 R09: 0000000000000002
R10: 0000000000000080 R11: 0000000000000001 R12: 00007ffc48b12c40
R13: 00007f3b0b01609c R14: 00000000000807de R15: 00007f3b0b016090
Allocated by task 10506:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
____kasan_kmalloc mm/kasan/common.c:380 [inline]
__kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
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:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 10506:
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
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+0x279/0x740 net/bluetooth/hci_core.c:795
hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
sock_do_ioctl+0x114/0x330 net/socket.c:1194
sock_ioctl+0x4ca/0x720 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:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Last potentially related work creation:
kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
__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+0xde/0x150 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+0xa7f/0xd30 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+0x648/0x740 net/bluetooth/hci_core.c:-1
hci_sock_ioctl+0x41e/0x7f0 net/bluetooth/hci_sock.c:1096
sock_do_ioctl+0x114/0x330 net/socket.c:1194
sock_ioctl+0x4ca/0x720 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:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Second to last potentially related work creation:
kasan_save_stack+0x3a/0x60 mm/kasan/common.c:46
__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+0xde/0x150 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+0xa29/0x11e0 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 ffff888125b30000
which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 2560 bytes inside of
8192-byte region [ffff888125b30000, ffff888125b32000)
The buggy address belongs to the physical page:
page:ffffea000496cc00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888125b34000 pfn:0x125b30
head:ffffea000496cc00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 ffffea0004a89408 ffffea000448c808 ffff888100043500
raw: ffff888125b34000 0000000000020001 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 0x1d2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 10218, tgid 10179 (syz.3.2876), ts 437895711362, free_ts 437882803695
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+0x2d12/0x2d80 mm/page_alloc.c:4554
__alloc_pages+0x1d9/0x480 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+0xa1/0x1e0 mm/slab_common.c:951
kmalloc include/linux/slab.h:568 [inline]
f2fs_kmalloc fs/f2fs/f2fs.h:3367 [inline]
f2fs_kzalloc fs/f2fs/f2fs.h:3386 [inline]
read_all_xattrs+0xf8/0x660 fs/f2fs/xattr.c:397
__f2fs_setxattr+0x1e9/0x12f0 fs/f2fs/xattr.c:654
f2fs_setxattr+0x1f1/0x510 fs/f2fs/xattr.c:819
f2fs_initxattrs+0xa6/0x110 fs/f2fs/xattr.c:145
security_inode_init_security+0x2a9/0x3d0 security/security.c:1133
f2fs_init_security+0x34/0x40 fs/f2fs/xattr.c:157
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+0x95/0x540 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:311
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]
slab_alloc mm/slub.c:3392 [inline]
__kmem_cache_alloc_lru mm/slub.c:3399 [inline]
kmem_cache_alloc+0x16e/0x330 mm/slub.c:3408
mt_alloc_one lib/maple_tree.c:157 [inline]
mas_alloc_nodes+0x2d8/0x850 lib/maple_tree.c:1284
mas_node_count_gfp lib/maple_tree.c:1366 [inline]
mas_preallocate+0xe13/0x1440 lib/maple_tree.c:5664
vma_expand+0x3b7/0xa10 mm/mmap.c:565
Memory state around the buggy address:
ffff888125b30900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888125b30980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888125b30a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888125b30a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888125b30b00: 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: 0 PID: 10525 Comm: syz.7.2950 Tainted: G B W syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__queue_work+0x575/0xd30 kernel/workqueue.c:-1
Code: 39 2b 0f 84 b9 00 00 00 e8 18 47 29 00 4c 89 ff e8 10 31 b8 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 cc 74 6e 00 49 8b 7d 00 e8 a3 2c
RSP: 0000:ffffc90000007c70 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff888129049440
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc90000007d08 R08: 0000000000000007 R09: fffffffffffffffb
R10: dffffc0000000000 R11: ffffed1024b66139 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888125b309c8 R15: 0000000000000008
FS: 0000555578f3a500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000015c0 CR3: 0000000118710000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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+0x689/0x9f0 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:console_emit_next_record+0x8a1/0xab0 kernel/printk/printk.c:2797
Code: de 48 81 e6 00 02 00 00 31 ff e8 4a 89 19 00 48 81 e3 00 02 00 00 75 07 e8 7c 84 19 00 eb 06 e8 75 84 19 00 fb 0f b6 5c 24 17 <66> 43 c7 44 25 20 f8 f8 43 c6 44 25 22 f8 4f 89 74 25 10 66 43 c7
RSP: 0000:ffffc9000194f160 EFLAGS: 00000293
RAX: ffffffff8157e79b RBX: 0000000000000001 RCX: ffff888129049440
RDX: 0000000000000000 RSI: 0000000000000200 RDI: 0000000000000000
RBP: ffffc9000194f350 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000329e1c R12: dffffc0000000000
R13: 1ffff92000329e38 R14: f8f8f8f8f8f8f8f8 R15: ffffc9000194f39f
console_flush_all kernel/printk/printk.c:-1 [inline]
console_unlock+0x246/0x560 kernel/printk/printk.c:2917
vprintk_emit+0x14d/0x420 kernel/printk/printk.c:2308
vprintk_default+0x26/0x30 kernel/printk/printk.c:2323
vprintk+0x7a/0x80 kernel/printk/printk_safe.c:45
_printk+0xda/0x128 kernel/printk/printk.c:2333
bio_check_eod block/blk-core.c:530 [inline]
submit_bio_noacct+0xfd1/0x1850 block/blk-core.c:744
submit_bio+0x1b5/0x2a0 block/blk-core.c:846
f2fs_submit_write_bio+0x5ba/0x840 fs/f2fs/data.c:577
__submit_merged_bio+0x13a/0x490 fs/f2fs/data.c:592
__f2fs_submit_merged_write fs/f2fs/data.c:685 [inline]
__submit_merged_write_cond+0x3f1/0x540 fs/f2fs/data.c:707
f2fs_submit_merged_write_cond+0x38/0x50 fs/f2fs/data.c:724
f2fs_wait_on_page_writeback+0x208/0x330 fs/f2fs/segment.c:3788
f2fs_vm_page_mkwrite+0xaad/0x1100 fs/f2fs/file.c:131
do_page_mkwrite mm/memory.c:3036 [inline]
wp_page_shared+0x505/0x8d0 mm/memory.c:3429
do_wp_page+0xde4/0xfc0 mm/memory.c:3581
handle_pte_fault mm/memory.c:5189 [inline]
__handle_mm_fault mm/memory.c:5313 [inline]
handle_mm_fault+0x1124/0x26c0 mm/memory.c:5453
do_user_addr_fault+0x905/0x1050 arch/x86/mm/fault.c:1323
handle_page_fault arch/x86/mm/fault.c:1466 [inline]
exc_page_fault+0x51/0xb0 arch/x86/mm/fault.c:1522
asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f3b0ac684b8
Code: 25 00 00 00 00 48 8d b8 d8 fe ff ff 4c 89 74 24 50 e8 1c 3b 0d 00 85 c0 75 13 48 8b 84 24 80 00 00 00 48 8b b4 24 c0 00 00 00 <48> 89 30 64 f0 83 2c 25 a0 ff ff ff 01 4c 8b 74 24 50 e9 91 f5 ff
RSP: 002b:00007ffc48b12b20 EFLAGS: 00010246
RAX: 00002000000015c0 RBX: 0000000000000002 RCX: 0000000000000007
RDX: cfbeb5b05b44369e RSI: 0000200000000080 RDI: 0000555578f3a3d8
RBP: fffffffffffffffe R08: 0000001b2d820000 R09: 0000000000000002
R10: 0000000000000080 R11: 0000000000000001 R12: 00007ffc48b12c40
R13: 00007f3b0b01609c R14: 00000000000807de R15: 00007f3b0b016090
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 18 47 29 00 4c 89 ff e8 10 31 b8 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 cc 74 6e 00 49 8b 7d 00 e8 a3 2c
RSP: 0000:ffffc90000007c70 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 000000007fffffff RCX: ffff888129049440
RDX: 0000000000000100 RSI: 000000007fffffff RDI: 000000007fffffff
RBP: ffffc90000007d08 R08: 0000000000000007 R09: fffffffffffffffb
R10: dffffc0000000000 R11: ffffed1024b66139 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888125b309c8 R15: 0000000000000008
FS: 0000555578f3a500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000015c0 CR3: 0000000118710000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: de 48 81 fimuls -0x7f(%rax)
3: e6 00 out %al,$0x0
5: 02 00 add (%rax),%al
7: 00 31 add %dh,(%rcx)
9: ff ljmp (bad)
a: e8 4a 89 19 00 call 0x198959
f: 48 81 e3 00 02 00 00 and $0x200,%rbx
16: 75 07 jne 0x1f
18: e8 7c 84 19 00 call 0x198499
1d: eb 06 jmp 0x25
1f: e8 75 84 19 00 call 0x198499
24: fb sti
25: 0f b6 5c 24 17 movzbl 0x17(%rsp),%ebx
* 2a: 66 43 c7 44 25 20 f8 movw $0xf8f8,0x20(%r13,%r12,1) <-- trapping instruction
31: f8
32: 43 c6 44 25 22 f8 movb $0xf8,0x22(%r13,%r12,1)
38: 4f 89 74 25 10 mov %r14,0x10(%r13,%r12,1)
3d: 66 data16
3e: 43 rex.XB
3f: c7 .byte 0xc7