==================================================================
BUG: KASAN: use-after-free in hlist_move_list include/linux/list.h:852 [inline]
BUG: KASAN: use-after-free in __collect_expired_timers kernel/time/timer.c:1484 [inline]
BUG: KASAN: use-after-free in collect_expired_timers kernel/time/timer.c:1719 [inline]
BUG: KASAN: use-after-free in __run_timers+0x4e6/0x700 kernel/time/timer.c:1783
Write of size 8 at addr ffff8881e2ee31c8 by task jbd2/sda1-8/120
CPU: 0 PID: 120 Comm: jbd2/sda1-8 Not tainted 5.4.210-syzkaller-00005-ge9f865cb240f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1d8/0x241 lib/dump_stack.c:118
print_address_description+0x8c/0x630 mm/kasan/report.c:384
__kasan_report+0xf6/0x130 mm/kasan/report.c:516
kasan_report+0x30/0x60 mm/kasan/common.c:653
hlist_move_list include/linux/list.h:852 [inline]
__collect_expired_timers kernel/time/timer.c:1484 [inline]
collect_expired_timers kernel/time/timer.c:1719 [inline]
__run_timers+0x4e6/0x700 kernel/time/timer.c:1783
run_timer_softirq+0x46/0x80 kernel/time/timer.c:1800
__do_softirq+0x23e/0x643 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+0x113/0x440 arch/x86/kernel/apic/apic.c:1150
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
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 d0 cd ca 85 e8 f5 24 4f fd 48 83 3d 1d 4f 86 01 00 74 29 48 89 df e8 73 65 08 fd 66 90 fb bf 01 00 00 00 06 9e 01 fd 65 8b 05 bb 0e be 7b 85 c0 74 02 5b c3 e8 a4 c8 bb
RSP: 0018:ffff8881ee17f2b0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff8881f014dbd0 RCX: dffffc0000000000
RDX: ffff8881ee061f80 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8881ee17f470 R08: ffffffff81424441 R09: ffffed103dc0c3f1
R10: ffffed103dc0c3f1 R11: 1ffff1103dc0c3f0 R12: ffff8881f0088000
R13: dffffc0000000000 R14: ffff8881eee21540 R15: ffff8881e985dc80
blk_mq_make_request+0x1484/0x1d60 block/blk-mq.c:2037
generic_make_request+0x494/0xe60 block/blk-core.c:1076
submit_bio+0x142/0x640 block/blk-core.c:1203
submit_bh+0x21/0x30 fs/buffer.c:3076
journal_submit_commit_record+0x7a6/0xa60 fs/jbd2/commit.c:154
jbd2_journal_commit_transaction+0x3895/0x5fc0 fs/jbd2/commit.c:879
kjournald2+0x4a4/0x8d0 fs/jbd2/journal.c:209
kthread+0x2d8/0x360 kernel/kthread.c:288
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Allocated by task 1253:
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
__kasan_kmalloc+0x131/0x1e0 mm/kasan/common.c:529
slab_post_alloc_hook mm/slab.h:584 [inline]
slab_alloc_node mm/slub.c:2829 [inline]
slab_alloc mm/slub.c:2837 [inline]
kmem_cache_alloc+0xd0/0x210 mm/slub.c:2842
shmem_alloc_inode+0x16/0x30 mm/shmem.c:3699
alloc_inode fs/inode.c:232 [inline]
new_inode_pseudo+0x60/0x210 fs/inode.c:928
new_inode+0x25/0x1d0 fs/inode.c:957
shmem_get_inode+0x113/0x630 mm/shmem.c:2252
shmem_mknod+0x54/0x1a0 mm/shmem.c:2844
lookup_open fs/namei.c:3309 [inline]
do_last fs/namei.c:3401 [inline]
path_openat+0x1ea2/0x3ea0 fs/namei.c:3612
do_filp_open+0x208/0x450 fs/namei.c:3642
do_sys_open+0x393/0x7e0 fs/open.c:1113
do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Freed by task 17:
save_stack mm/kasan/common.c:70 [inline]
set_track mm/kasan/common.c:78 [inline]
kasan_set_free_info mm/kasan/common.c:345 [inline]
__kasan_slab_free+0x178/0x240 mm/kasan/common.c:487
slab_free_hook mm/slub.c:1455 [inline]
slab_free_freelist_hook+0x80/0x150 mm/slub.c:1494
slab_free mm/slub.c:3080 [inline]
kmem_cache_free+0xa9/0x1d0 mm/slub.c:3096
__rcu_reclaim kernel/rcu/rcu.h:222 [inline]
rcu_do_batch+0x49e/0xa10 kernel/rcu/tree.c:2167
rcu_core+0x4ba/0xca0 kernel/rcu/tree.c:2387
__do_softirq+0x23e/0x643 kernel/softirq.c:292
The buggy address belongs to the object at ffff8881e2ee2fb0
which belongs to the cache shmem_inode_cache of size 744
The buggy address is located 536 bytes inside of
744-byte region [ffff8881e2ee2fb0, ffff8881e2ee3298)
The buggy address belongs to the page:
page:ffffea00078bb800 refcount:1 mapcount:0 mapping:ffff8881f5cfb400 index:0x0 compound_mapcount: 0
flags: 0x8000000000010200(slab|head)
raw: 8000000000010200 dead000000000100 dead000000000122 ffff8881f5cfb400
raw: 0000000000000000 0000000000120012 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL)
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook mm/page_alloc.c:2165 [inline]
prep_new_page+0x194/0x380 mm/page_alloc.c:2171
get_page_from_freelist+0x524/0x560 mm/page_alloc.c:3794
__alloc_pages_nodemask+0x372/0x860 mm/page_alloc.c:4857
alloc_slab_page+0x39/0x3e0 mm/slub.c:343
allocate_slab mm/slub.c:1683 [inline]
new_slab+0x97/0x450 mm/slub.c:1749
new_slab_objects mm/slub.c:2505 [inline]
___slab_alloc+0x320/0x4a0 mm/slub.c:2667
__slab_alloc+0x5a/0x90 mm/slub.c:2707
slab_alloc_node mm/slub.c:2792 [inline]
slab_alloc mm/slub.c:2837 [inline]
kmem_cache_alloc+0x100/0x210 mm/slub.c:2842
shmem_alloc_inode+0x16/0x30 mm/shmem.c:3699
alloc_inode fs/inode.c:232 [inline]
new_inode_pseudo+0x60/0x210 fs/inode.c:928
new_inode+0x25/0x1d0 fs/inode.c:957
shmem_get_inode+0x113/0x630 mm/shmem.c:2252
shmem_mknod+0x54/0x1a0 mm/shmem.c:2844
lookup_open fs/namei.c:3309 [inline]
do_last fs/namei.c:3401 [inline]
path_openat+0x1ea2/0x3ea0 fs/namei.c:3612
do_filp_open+0x208/0x450 fs/namei.c:3642
do_sys_open+0x393/0x7e0 fs/open.c:1113
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+0x7fe/0x930 mm/page_alloc.c:1438
free_the_page mm/page_alloc.c:4919 [inline]
__free_pages+0x8f/0x250 mm/page_alloc.c:4925
kfree+0x1ef/0x260 mm/slub.c:4068
device_release+0x70/0x1a0 drivers/base/core.c:1776
kobject_cleanup lib/kobject.c:708 [inline]
kobject_release+0x20c/0x330 lib/kobject.c:739
tun_set_iff+0xc0b/0x1050 drivers/net/tun.c:2917
__tun_chr_ioctl+0x88e/0x1ee0 drivers/net/tun.c:3160
do_vfs_ioctl+0x744/0x1730 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+0xcb/0x1c0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Memory state around the buggy address:
ffff8881e2ee3080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881e2ee3100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881e2ee3180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8881e2ee3200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881e2ee3280: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 1ef196067 P4D 1ef196067 PUD 0
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 120 Comm: jbd2/sda1-8 Tainted: G B 5.4.210-syzkaller-00005-ge9f865cb240f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6e09cc0 EFLAGS: 00010202
RAX: ffffffff8155b109 RBX: 0000000000000101 RCX: ffff8881ee061f80
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881e2ee31c0
RBP: ffff8881e2ee31e0 R08: ffffffff8155aee2 R09: fffffbfff0d9270d
R10: fffffbfff0d9270d R11: 1ffffffff0d9270c R12: 00000000ffffb570
R13: 1ffff1103edc92f1 R14: 0000000000000000 R15: ffff8881e2ee31c0
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001af5f7000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
call_timer_fn+0x31/0x350 kernel/time/timer.c:1418
expire_timers+0x21e/0x400 kernel/time/timer.c:1463
__run_timers+0x5e0/0x700 kernel/time/timer.c:1787
run_timer_softirq+0x46/0x80 kernel/time/timer.c:1800
__do_softirq+0x23e/0x643 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+0x113/0x440 arch/x86/kernel/apic/apic.c:1150
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
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 d0 cd ca 85 e8 f5 24 4f fd 48 83 3d 1d 4f 86 01 00 74 29 48 89 df e8 73 65 08 fd 66 90 fb bf 01 00 00 00 06 9e 01 fd 65 8b 05 bb 0e be 7b 85 c0 74 02 5b c3 e8 a4 c8 bb
RSP: 0018:ffff8881ee17f2b0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff8881f014dbd0 RCX: dffffc0000000000
RDX: ffff8881ee061f80 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff8881ee17f470 R08: ffffffff81424441 R09: ffffed103dc0c3f1
R10: ffffed103dc0c3f1 R11: 1ffff1103dc0c3f0 R12: ffff8881f0088000
R13: dffffc0000000000 R14: ffff8881eee21540 R15: ffff8881e985dc80
blk_mq_make_request+0x1484/0x1d60 block/blk-mq.c:2037
generic_make_request+0x494/0xe60 block/blk-core.c:1076
submit_bio+0x142/0x640 block/blk-core.c:1203
submit_bh+0x21/0x30 fs/buffer.c:3076
journal_submit_commit_record+0x7a6/0xa60 fs/jbd2/commit.c:154
jbd2_journal_commit_transaction+0x3895/0x5fc0 fs/jbd2/commit.c:879
kjournald2+0x4a4/0x8d0 fs/jbd2/journal.c:209
kthread+0x2d8/0x360 kernel/kthread.c:288
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
CR2: 0000000000000000
---[ end trace d5bfe85dd1c2654f ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffff8881f6e09cc0 EFLAGS: 00010202
RAX: ffffffff8155b109 RBX: 0000000000000101 RCX: ffff8881ee061f80
RDX: 0000000000000101 RSI: 0000000000000000 RDI: ffff8881e2ee31c0
RBP: ffff8881e2ee31e0 R08: ffffffff8155aee2 R09: fffffbfff0d9270d
R10: fffffbfff0d9270d R11: 1ffffffff0d9270c R12: 00000000ffffb570
R13: 1ffff1103edc92f1 R14: 0000000000000000 R15: ffff8881e2ee31c0
FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001af5f7000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 08 00 or %al,(%rax)
2: 74 0c je 0x10
4: 48 c7 c7 d0 cd ca 85 mov $0xffffffff85cacdd0,%rdi
b: e8 f5 24 4f fd callq 0xfd4f2505
10: 48 83 3d 1d 4f 86 01 cmpq $0x0,0x1864f1d(%rip) # 0x1864f35
17: 00
18: 74 29 je 0x43
1a: 48 89 df mov %rbx,%rdi
1d: e8 73 65 08 fd callq 0xfd086595
22: 66 90 xchg %ax,%ax
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 06 9e 01 fd callq 0xfd019e35 <-- trapping instruction
2f: 65 8b 05 bb 0e be 7b mov %gs:0x7bbe0ebb(%rip),%eax # 0x7bbe0ef1
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5b pop %rbx
3b: c3 retq
3c: e8 .byte 0xe8
3d: a4 movsb %ds:(%rsi),%es:(%rdi)
3e: c8 .byte 0xc8
3f: bb .byte 0xbb