==================================================================
BUG: KASAN: use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
BUG: KASAN: use-after-free in do_raw_spin_lock+0x28b/0x360 kernel/locking/spinlock_debug.c:114
Read of size 4 at addr ffff888023698974 by task syz-executor139/3607
CPU: 1 PID: 3607 Comm: syz-executor139 Not tainted 6.1.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
print_address_description+0x74/0x340 mm/kasan/report.c:284
print_report+0x107/0x1f0 mm/kasan/report.c:395
kasan_report+0xcd/0x100 mm/kasan/report.c:495
debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
do_raw_spin_lock+0x28b/0x360 kernel/locking/spinlock_debug.c:114
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0xbf/0x100 kernel/locking/spinlock.c:162
try_to_wake_up+0x9c/0xac0 kernel/sched/core.c:4076
call_timer_fn+0xf5/0x210 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers+0x772/0x980 kernel/time/timer.c:1790
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803
__do_softirq+0x277/0x738 kernel/softirq.c:571
__irq_exit_rcu+0xcf/0x150 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1107
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202
Code: 00 00 00 00 00 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 1e c4 2a f7 48 89 df e8 26 35 2c f7 e8 d1 9b 51 f7 fb bf 01 00 00 00 b6 84 1e f7 65 8b 05 c7 89 c5 75 85 c0 74 02 5b c3 e8 94 a5 c3
RSP: 0018:ffffc90003e5f6d0 EFLAGS: 00000286
RAX: 0ca42d88e1c65f00 RBX: ffff88801c17dc48 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffffc90003e5f850 R08: dffffc0000000000 R09: ffffed100382fb8a
R10: ffffed100382fb8a R11: 1ffff1100382fb89 R12: ffff888020109000
R13: dffffc0000000000 R14: 0000000000060801 R15: ffff88801e3ab280
blk_mq_submit_bio+0x116f/0x1da0 block/blk-mq.c:2916
__submit_bio block/blk-core.c:591 [inline]
__submit_bio_noacct_mq block/blk-core.c:668 [inline]
submit_bio_noacct_nocheck+0xddd/0x1050 block/blk-core.c:685
submit_bh fs/buffer.c:2707 [inline]
__sync_dirty_buffer+0x208/0x330 fs/buffer.c:2745
nilfs_sync_super fs/nilfs2/super.c:181 [inline]
nilfs_commit_super+0x472/0x940 fs/nilfs2/super.c:297
nilfs_cleanup_super+0x362/0x410 fs/nilfs2/super.c:328
nilfs_put_super+0x96/0x150 fs/nilfs2/super.c:472
generic_shutdown_super+0x130/0x310 fs/super.c:491
kill_block_super+0x79/0xd0 fs/super.c:1427
deactivate_locked_super+0xa7/0xf0 fs/super.c:331
cleanup_mnt+0x494/0x520 fs/namespace.c:1186
task_work_run+0x243/0x300 kernel/task_work.c:179
ptrace_notify+0x29a/0x340 kernel/signal.c:2354
ptrace_report_syscall include/linux/ptrace.h:420 [inline]
ptrace_report_syscall_exit include/linux/ptrace.h:482 [inline]
syscall_exit_work+0x8c/0xe0 kernel/entry/common.c:251
syscall_exit_to_user_mode_prepare+0x63/0xc0 kernel/entry/common.c:278
__syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
syscall_exit_to_user_mode+0xa/0x60 kernel/entry/common.c:296
do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9761bf6017
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd24e8f598 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9761bf6017
RDX: 00007ffd24e8f65a RSI: 000000000000000a RDI: 00007ffd24e8f650
RBP: 00007ffd24e8f650 R08: 00000000ffffffff R09: 00007ffd24e8f430
R10: 000055555574f653 R11: 0000000000000202 R12: 00007ffd24e906c0
R13: 000055555574f5f0 R14: 00007ffd24e8f5c0 R15: 000000000000001c
Allocated by task 2:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x3d/0x60 mm/kasan/common.c:52
__kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:325
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slab.h:737 [inline]
slab_alloc_node mm/slub.c:3398 [inline]
kmem_cache_alloc_node+0x1ca/0x340 mm/slub.c:3443
alloc_task_struct_node kernel/fork.c:171 [inline]
dup_task_struct+0x4e/0x490 kernel/fork.c:966
copy_process+0x637/0x4000 kernel/fork.c:2084
kernel_clone+0x21b/0x620 kernel/fork.c:2671
kernel_thread+0x150/0x1d0 kernel/fork.c:2731
create_kthread kernel/kthread.c:399 [inline]
kthreadd+0x57c/0x750 kernel/kthread.c:746
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Last potentially related work creation:
kasan_save_stack+0x2b/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481
call_rcu+0x163/0x9c0 kernel/rcu/tree.c:2796
context_switch kernel/sched/core.c:5194 [inline]
__schedule+0x8d1/0xd70 kernel/sched/core.c:6503
schedule+0xcb/0x190 kernel/sched/core.c:6579
io_schedule+0x83/0x100 kernel/sched/core.c:8723
bit_wait_io+0xe/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb5/0x170 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1c3/0x240 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
__wait_on_buffer fs/buffer.c:122 [inline]
wait_on_buffer include/linux/buffer_head.h:385 [inline]
__bread_slow fs/buffer.c:1178 [inline]
__bread_gfp+0x262/0x320 fs/buffer.c:1370
sb_bread include/linux/buffer_head.h:338 [inline]
nilfs_read_super_block+0x82/0xe0 fs/nilfs2/super.c:843
nilfs_load_super_block+0x148/0xe00 fs/nilfs2/the_nilfs.c:497
init_nilfs+0xb7/0x7d0 fs/nilfs2/the_nilfs.c:577
nilfs_fill_super+0xb1/0x5d0 fs/nilfs2/super.c:1047
nilfs_mount+0x613/0x9b0 fs/nilfs2/super.c:1317
legacy_get_tree+0xea/0x180 fs/fs_context.c:610
vfs_get_tree+0x88/0x270 fs/super.c:1530
do_new_mount+0x289/0xad0 fs/namespace.c:3040
do_mount fs/namespace.c:3383 [inline]
__do_sys_mount fs/namespace.c:3591 [inline]
__se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3568
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Second to last potentially related work creation:
kasan_save_stack+0x2b/0x50 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481
call_rcu+0x163/0x9c0 kernel/rcu/tree.c:2796
context_switch kernel/sched/core.c:5194 [inline]
__schedule+0x8d1/0xd70 kernel/sched/core.c:6503
schedule+0xcb/0x190 kernel/sched/core.c:6579
schedule_hrtimeout_range_clock+0x26e/0x460 kernel/time/hrtimer.c:2305
poll_schedule_timeout+0x10b/0x150 fs/select.c:244
do_select+0x1985/0x1b60 fs/select.c:607
core_sys_select+0x729/0x960 fs/select.c:681
do_pselect fs/select.c:763 [inline]
__do_sys_pselect6+0x371/0x420 fs/select.c:804
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
The buggy address belongs to the object at ffff888023698000
which belongs to the cache task_struct of size 7232
The buggy address is located 2420 bytes inside of
7232-byte region [ffff888023698000, ffff888023699c40)
The buggy address belongs to the physical page:
page:ffffea00008da600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88802369d7c0 pfn:0x23698
head:ffffea00008da600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0000965208 ffffea00009e7e08 ffff8881400073c0
raw: ffff88802369d7c0 0000000000040002 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 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2, tgid 2 (kthreadd), ts 36703962771, free_ts 36605481195
prep_new_page mm/page_alloc.c:2538 [inline]
get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4287
__alloc_pages+0x259/0x560 mm/page_alloc.c:5554
alloc_slab_page+0x70/0xf0 mm/slub.c:1794
allocate_slab+0x5e/0x4b0 mm/slub.c:1939
new_slab mm/slub.c:1992 [inline]
___slab_alloc+0x782/0xe20 mm/slub.c:3180
__slab_alloc mm/slub.c:3279 [inline]
slab_alloc_node mm/slub.c:3364 [inline]
kmem_cache_alloc_node+0x283/0x340 mm/slub.c:3443
alloc_task_struct_node kernel/fork.c:171 [inline]
dup_task_struct+0x4e/0x490 kernel/fork.c:966
copy_process+0x637/0x4000 kernel/fork.c:2084
kernel_clone+0x21b/0x620 kernel/fork.c:2671
kernel_thread+0x150/0x1d0 kernel/fork.c:2731
create_kthread kernel/kthread.c:399 [inline]
kthreadd+0x57c/0x750 kernel/kthread.c:746
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1458 [inline]
free_pcp_prepare+0x80c/0x8f0 mm/page_alloc.c:1508
free_unref_page_prepare mm/page_alloc.c:3386 [inline]
free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3482
free_slab mm/slub.c:2031 [inline]
discard_slab mm/slub.c:2037 [inline]
__unfreeze_partials+0x1ab/0x200 mm/slub.c:2586
put_cpu_partial+0x106/0x170 mm/slub.c:2662
qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slab.h:737 [inline]
slab_alloc_node mm/slub.c:3398 [inline]
__kmem_cache_alloc_node+0x1d7/0x310 mm/slub.c:3437
__do_kmalloc_node mm/slab_common.c:954 [inline]
__kmalloc_node_track_caller+0x9c/0x1a0 mm/slab_common.c:975
kmalloc_reserve net/core/skbuff.c:437 [inline]
__alloc_skb+0x112/0x2b0 net/core/skbuff.c:509
alloc_skb_fclone include/linux/skbuff.h:1317 [inline]
tcp_stream_alloc_skb+0x3c/0x300 net/ipv4/tcp.c:862
tcp_sendmsg_locked+0xd70/0x40d0 net/ipv4/tcp.c:1325
tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1483
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
sock_write_iter+0x3d4/0x540 net/socket.c:1108
call_write_iter include/linux/fs.h:2191 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7dc/0xc50 fs/read_write.c:584
ksys_write+0x177/0x2a0 fs/read_write.c:637
Memory state around the buggy address:
ffff888023698800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888023698880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888023698900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888023698980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888023698a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: 00 53 48 add %dl,0x48(%rbx)
7: 89 fb mov %edi,%ebx
9: 48 83 c7 18 add $0x18,%rdi
d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi
12: e8 1e c4 2a f7 callq 0xf72ac435
17: 48 89 df mov %rbx,%rdi
1a: e8 26 35 2c f7 callq 0xf72c3545
1f: e8 d1 9b 51 f7 callq 0xf7519bf5
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 b6 84 1e f7 callq 0xf71e84e5 <-- trapping instruction
2f: 65 8b 05 c7 89 c5 75 mov %gs:0x75c589c7(%rip),%eax # 0x75c589fd
36: 85 c0 test %eax,%eax
38: 74 02 je 0x3c
3a: 5b pop %rbx
3b: c3 retq
3c: e8 .byte 0xe8
3d: 94 xchg %eax,%esp
3e: a5 movsl %ds:(%rsi),%es:(%rdi)
3f: c3 retq