==================================================================
BUG: KASAN: use-after-free in hlist_move_list include/linux/list.h:870 [inline]
BUG: KASAN: use-after-free in __collect_expired_timers kernel/time/timer.c:1514 [inline]
BUG: KASAN: use-after-free in collect_expired_timers kernel/time/timer.c:1749 [inline]
BUG: KASAN: use-after-free in __run_timers+0x521/0xbe0 kernel/time/timer.c:1813
Write of size 8 at addr ffff8881f3dfb1c8 by task kworker/0:3/387
CPU: 0 PID: 387 Comm: kworker/0:3 Not tainted 5.4.274-syzkaller-00016-gdd432c37afcd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: rcu_gp process_srcu
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1d8/0x241 lib/dump_stack.c:118
print_address_description+0x8c/0x600 mm/kasan/report.c:384
__kasan_report+0xf3/0x120 mm/kasan/report.c:516
kasan_report+0x30/0x60 mm/kasan/common.c:653
hlist_move_list include/linux/list.h:870 [inline]
__collect_expired_timers kernel/time/timer.c:1514 [inline]
collect_expired_timers kernel/time/timer.c:1749 [inline]
__run_timers+0x521/0xbe0 kernel/time/timer.c:1813
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830
__do_softirq+0x23b/0x6b7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x195/0x1c0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:538 [inline]
smp_apic_timer_interrupt+0x11a/0x460 arch/x86/kernel/apic/apic.c:1149
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x45/0x60 kernel/locking/spinlock.c:199
Code: 08 00 74 0c 48 c7 c7 90 3b eb 85 e8 a5 12 43 fd 48 83 3d 1d 2d 9a 01 00 74 29 48 89 df e8 33 e8 fa fc 66 90 fb bf 01 00 00 00 b6 d4 f3 fc 65 8b 05 fb 7e b1 7b 85 c0 74 02 5b c3 e8 84 45 af
RSP: 0018:ffff8881d7707d58 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff8881f6e57440 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001
RBP: ffff8881d7b56318 R08: dffffc0000000000 R09: fffffbfff0be38c4
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881d7b56300
R13: ffffffff85f1c618 R14: 1ffff1103af6ac63 R15: ffff8881f6e5bd00
spin_unlock_irq include/linux/spinlock.h:388 [inline]
process_one_work+0x73c/0xd20 kernel/workqueue.c:2263
worker_thread+0xaef/0x1470 kernel/workqueue.c:2436
kthread+0x2da/0x360 kernel/kthread.c:288
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354
The buggy address belongs to the page:
page:ffffea0007cf7ec0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0x8000000000000000()
raw: 8000000000000000 0000000000000000 ffffea0007cf7e88 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x146dc0(GFP_USER|__GFP_NOWARN|__GFP_RETRY_MAYFAIL|__GFP_COMP|__GFP_ZERO)
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook mm/page_alloc.c:2165 [inline]
prep_new_page+0x18f/0x370 mm/page_alloc.c:2171
get_page_from_freelist+0x2d13/0x2d90 mm/page_alloc.c:3794
__alloc_pages_nodemask+0x393/0x840 mm/page_alloc.c:4893
__alloc_pages include/linux/gfp.h:503 [inline]
__alloc_pages_node include/linux/gfp.h:516 [inline]
alloc_pages_node include/linux/gfp.h:530 [inline]
kmalloc_order mm/slab_common.c:1342 [inline]
kmalloc_order_trace+0x2a/0x100 mm/slab_common.c:1358
__kmalloc_node include/linux/slab.h:422 [inline]
kmalloc_node include/linux/slab.h:599 [inline]
kvmalloc_node+0x7e/0xf0 mm/util.c:596
kvmalloc include/linux/mm.h:761 [inline]
kvzalloc include/linux/mm.h:769 [inline]
alloc_netdev_mqs+0x85/0xc70 net/core/dev.c:9610
tun_set_iff+0x51f/0xdc0 drivers/net/tun.c:2888
__tun_chr_ioctl+0x8a9/0x1d00 drivers/net/tun.c:3182
do_vfs_ioctl+0x742/0x1720 fs/ioctl.c:47
ksys_ioctl fs/ioctl.c:742 [inline]
__do_sys_ioctl fs/ioctl.c:749 [inline]
__se_sys_ioctl fs/ioctl.c:747 [inline]
__x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1176 [inline]
__free_pages_ok+0x847/0x950 mm/page_alloc.c:1438
free_the_page mm/page_alloc.c:4955 [inline]
__free_pages+0x91/0x140 mm/page_alloc.c:4961
device_release+0x6b/0x190 drivers/base/core.c:1776
kobject_cleanup lib/kobject.c:716 [inline]
kobject_release lib/kobject.c:747 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1e6/0x2f0 lib/kobject.c:764
tun_set_iff+0x870/0xdc0 drivers/net/tun.c:2919
__tun_chr_ioctl+0x8a9/0x1d00 drivers/net/tun.c:3182
do_vfs_ioctl+0x742/0x1720 fs/ioctl.c:47
ksys_ioctl fs/ioctl.c:742 [inline]
__do_sys_ioctl fs/ioctl.c:749 [inline]
__se_sys_ioctl fs/ioctl.c:747 [inline]
__x64_sys_ioctl+0xd4/0x110 fs/ioctl.c:747
do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x5c/0xc1
Memory state around the buggy address:
ffff8881f3dfb080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881f3dfb100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8881f3dfb180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff8881f3dfb200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff8881f3dfb280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
----------------
Code disassembly (best guess):
0: 08 00 or %al,(%rax)
2: 74 0c je 0x10
4: 48 c7 c7 90 3b eb 85 mov $0xffffffff85eb3b90,%rdi
b: e8 a5 12 43 fd call 0xfd4312b5
10: 48 83 3d 1d 2d 9a 01 cmpq $0x0,0x19a2d1d(%rip) # 0x19a2d35
17: 00
18: 74 29 je 0x43
1a: 48 89 df mov %rbx,%rdi
1d: e8 33 e8 fa fc call 0xfcfae855
22: 66 90 xchg %ax,%ax
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 b6 d4 f3 fc call 0xfcf3d4e5 <-- trapping instruction
2f: 65 8b 05 fb 7e b1 7b mov %gs:0x7bb17efb(%rip),%eax # 0x7bb17f31
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5b pop %rbx
3b: c3 ret
3c: e8 .byte 0xe8
3d: 84 45 af test %al,-0x51(%rbp)