loop2: detected capacity change from 0 to 8
==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x4346/0x6120
Read of size 8 at addr ffff888044be9458 by task syz-executor/14024
CPU: 0 PID: 14024 Comm: syz-executor Not tainted 5.19.0-rc3-next-20220623 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
dump_stack_lvl+0x8b/0xb3
print_report.cold+0x5e/0x5e8
kasan_report+0xbe/0x1c0
__lock_acquire+0x4346/0x6120
lock_acquire+0x1a2/0x530
_raw_spin_lock_irq+0x32/0x50
kmemleak_scan+0x21d/0x16b0
kmemleak_write+0x56c/0x680
full_proxy_write+0x11d/0x190
vfs_write+0x264/0xac0
ksys_write+0x127/0x250
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f50b01c15c3
Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007ffff4821388 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffff48219c8 RCX: 00007f50b01c15c3
RDX: 0000000000000004 RSI: 00007f50b0277ed9 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000522 R09: 00007ffff48a9080
R10: 00007ffff48a9090 R11: 0000000000000246 R12: 00007f50b01c3b10
R13: 00007ffff4821ee2 R14: 0000000000000000 R15: 0000000000141034
Allocated by task 14026:
kasan_save_stack+0x1e/0x40
__kasan_slab_alloc+0x66/0x80
kmem_cache_alloc+0x1b1/0x490
__create_object.isra.0+0x3d/0xc10
kmem_cache_alloc+0x247/0x490
__alloc_file+0x21/0x230
alloc_empty_file+0x6d/0x170
path_openat+0xe1/0x2870
do_filp_open+0x1aa/0x400
do_sys_openat2+0x16d/0x4c0
__x64_sys_openat+0x13f/0x1f0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
Freed by task 14027:
kasan_save_stack+0x1e/0x40
kasan_set_track+0x21/0x30
kasan_set_free_info+0x20/0x30
____kasan_slab_free+0x14b/0x1a0
kmem_cache_free+0xe7/0x5e0
rcu_core+0x7e2/0x2070
__do_softirq+0x270/0x8c7
Last potentially related work creation:
kasan_save_stack+0x1e/0x40
__kasan_record_aux_stack+0x97/0xa0
call_rcu+0x6a/0xa20
kmem_cache_free+0x26e/0x5e0
rcu_core+0x7e2/0x2070
__do_softirq+0x270/0x8c7
Second to last potentially related work creation:
kasan_save_stack+0x1e/0x40
__kasan_record_aux_stack+0x97/0xa0
call_rcu+0x6a/0xa20
kfree+0x1e1/0x5b0
ieee80211_bss_info_update+0x53d/0xb00
ieee80211_ibss_rx_queued_mgmt+0x1912/0x2ef0
ieee80211_iface_work+0xa71/0xce0
process_one_work+0xa1c/0x16a0
worker_thread+0x637/0x1250
kthread+0x2f2/0x3b0
ret_from_fork+0x22/0x30
The buggy address belongs to the object at ffff888044be9440
which belongs to the cache kmemleak_object of size 368
The buggy address is located 24 bytes inside of
368-byte region [ffff888044be9440, ffff888044be95b0)
The buggy address belongs to the physical page:
page:000000003049924a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x44be8
head:000000003049924a order:1 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 ffffea0000349780 dead000000000003 ffff88800784f780
raw: 0000000000000000 0000000000120012 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888044be9300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888044be9380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888044be9400: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
^
ffff888044be9480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888044be9500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 1, t=105006 jiffies, g=418597, q=24134 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 105006 (4296087395-4295982389), jiffies_till_next_fqs=3, root ->qsmask 0x0
rcu: rcu_preempt kthread timer wakeup didn't happen for 105003 jiffies! g418597 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200
rcu: Possible timer handling issue on cpu=0 timer-softirq=145069
rcu: rcu_preempt kthread starved for 105006 jiffies! g418597 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R stack:29416 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
__schedule+0x893/0x2490
schedule+0xd2/0x1f0
schedule_timeout+0x143/0x280
rcu_gp_fqs_loop+0x1f4/0xbd0
rcu_gp_kthread+0x3c1/0x5a0
kthread+0x2f2/0x3b0
ret_from_fork+0x22/0x30
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14024 Comm: syz-executor Tainted: G B 5.19.0-rc3-next-20220623 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:kasan_check_range+0x0/0x1e0
Code: e8 e5 e2 ff ff 48 89 c3 48 85 c0 74 17 8b 40 08 40 0f b6 f5 bf 00 08 00 00 89 43 0c e8 c9 df ff ff 89 43 08 5b 5d 41 5c c3 90 <48> 85 f6 0f 84 8c 01 00 00 48 89 f8 41 54 44 0f b6 c2 55 53 48 01
RSP: 0018:ffff888046f57ae0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 000000000d25f0e0 RCX: ffffffff81298687
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888044be9440
RBP: ffff888044be9440 R08: 0000000000000000 R09: ffff888044be9443
R10: ffffed100897d288 R11: 0000000000000001 R12: 0000000000000003
R13: ffffed100897d288 R14: 0000000000000001 R15: 1ffff11008deaf5e
FS: 0000555557113400(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe04d0a000 CR3: 0000000046226000 CR4: 0000000000350ef0
Call Trace:
queued_spin_lock_slowpath+0xa7/0xc80
do_raw_spin_lock+0x1d8/0x260
kmemleak_scan+0x21d/0x16b0
kmemleak_write+0x56c/0x680
full_proxy_write+0x11d/0x190
vfs_write+0x264/0xac0
ksys_write+0x127/0x250
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f50b01c15c3
Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007ffff4821388 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffff48219c8 RCX: 00007f50b01c15c3
RDX: 0000000000000004 RSI: 00007f50b0277ed9 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000522 R09: 00007ffff48a9080
R10: 00007ffff48a9090 R11: 0000000000000246 R12: 00007f50b01c3b10
R13: 00007ffff4821ee2 R14: 0000000000000000 R15: 0000000000141034
INFO: task kworker/u4:2:33 blocked for more than 143 seconds.
Tainted: G B 5.19.0-rc3-next-20220623 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:2 state:D stack:24784 pid: 33 ppid: 2 flags:0x00004000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
Call Trace:
__schedule+0x893/0x2490
schedule+0xd2/0x1f0
schedule_timeout+0x1c5/0x280
__wait_for_common+0x36f/0x4b0
__synchronize_srcu+0x151/0x220
fsnotify_mark_destroy_workfn+0xf4/0x320
process_one_work+0xa1c/0x16a0
worker_thread+0x637/0x1250
kthread+0x2f2/0x3b0
ret_from_fork+0x22/0x30
INFO: lockdep is turned off.
----------------
Code disassembly (best guess):
0: e8 e5 e2 ff ff callq 0xffffe2ea
5: 48 89 c3 mov %rax,%rbx
8: 48 85 c0 test %rax,%rax
b: 74 17 je 0x24
d: 8b 40 08 mov 0x8(%rax),%eax
10: 40 0f b6 f5 movzbl %bpl,%esi
14: bf 00 08 00 00 mov $0x800,%edi
19: 89 43 0c mov %eax,0xc(%rbx)
1c: e8 c9 df ff ff callq 0xffffdfea
21: 89 43 08 mov %eax,0x8(%rbx)
24: 5b pop %rbx
25: 5d pop %rbp
26: 41 5c pop %r12
28: c3 retq
29: 90 nop
* 2a: 48 85 f6 test %rsi,%rsi <-- trapping instruction
2d: 0f 84 8c 01 00 00 je 0x1bf
33: 48 89 f8 mov %rdi,%rax
36: 41 54 push %r12
38: 44 0f b6 c2 movzbl %dl,%r8d
3c: 55 push %rbp
3d: 53 push %rbx
3e: 48 rex.W
3f: 01 .byte 0x1