EXT4-fs (loop0): Unrecognized mount option "&o/!L2Y[ EdP31K" or missing value
==================================================================
BUG: KASAN: use-after-free in packet_rcv+0x5aa/0x1490 net/packet/af_packet.c:2104
Read of size 1 at addr ffff888092d390ec by task syz-executor.1/17892
CPU: 0 PID: 17892 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
kasan_report mm/kasan/report.c:412 [inline]
__asan_report_load1_noabort+0x88/0x90 mm/kasan/report.c:430
packet_rcv+0x5aa/0x1490 net/packet/af_packet.c:2104
deliver_skb net/core/dev.c:1956 [inline]
dev_queue_xmit_nit+0x24d/0xa20 net/core/dev.c:2012
xmit_one net/core/dev.c:3252 [inline]
dev_hard_start_xmit+0xaa/0x920 net/core/dev.c:3272
__dev_queue_xmit+0x269d/0x2e00 net/core/dev.c:3838
neigh_output include/net/neighbour.h:501 [inline]
ip6_finish_output2+0x113d/0x2290 net/ipv6/ip6_output.c:120
ip6_finish_output+0x89b/0x10f0 net/ipv6/ip6_output.c:192
NF_HOOK_COND include/linux/netfilter.h:278 [inline]
ip6_output+0x205/0x770 net/ipv6/ip6_output.c:209
dst_output include/net/dst.h:455 [inline]
NF_HOOK include/linux/netfilter.h:289 [inline]
ndisc_send_skb+0xa24/0x1720 net/ipv6/ndisc.c:491
ndisc_send_rs+0x131/0x690 net/ipv6/ndisc.c:685
addrconf_rs_timer+0x384/0x6a0 net/ipv6/addrconf.c:3835
call_timer_fn+0x177/0x700 kernel/time/timer.c:1338
expire_timers+0x243/0x4e0 kernel/time/timer.c:1375
__run_timers kernel/time/timer.c:1696 [inline]
run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709
__do_softirq+0x265/0x980 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x215/0x260 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
RIP: 0010:preempt_schedule_irq+0xa6/0x140 kernel/sched/core.c:3744
Code: 00 00 e8 3d 04 29 f9 e8 58 3f 4f f9 4c 89 e8 48 c1 e8 03 80 3c 18 00 75 69 48 83 3d 9b 18 d9 01 00 74 5b fb 66 0f 1f 44 00 00 01 00 00 00 e8 40 d1 ff ff 48 c7 c0 90 82 f1 89 48 c1 e8 03 80
RSP: 0018:ffff88809c6ff580 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff13e3053 RBX: dffffc0000000000 RCX: 1ffff11012a09d7a
RDX: 0000000000000000 RSI: ffff88809504ebd8 RDI: ffff88809504eb84
RBP: ffffed1012a09c60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809504e300
R13: ffffffff89f18298 R14: 0000000000000000 R15: 0000000000000000
retint_kernel+0x1b/0x2d
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:rcu_read_unlock_special+0x456/0xfc0 kernel/rcu/tree_plugin.h:601
Code: 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 bd 09 00 00 48 83 3d ee 24 a0 08 00 0f 84 37 06 00 00 48 8b 3c 24 57 9d <0f> 1f 44 00 00 48 83 c4 40 5b 5d 41 5c 41 5d 41 5e 41 5f c3 c3 48
RSP: 0018:ffff88809c6ff650 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff02
RAX: 1ffffffff13e3051 RBX: 0000000000000000 RCX: 1ffff11012a09d7a
RDX: dffffc0000000000 RSI: ffff88809504ebd8 RDI: 0000000000000286
RBP: ffff88809504e674 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809504e300
R13: ffff88809504e676 R14: ffff88809504e675 R15: ffffffff89f88280
__rcu_read_unlock+0x158/0x160 kernel/rcu/tree_plugin.h:428
rcu_read_unlock include/linux/rcupdate.h:680 [inline]
blkcg_bio_issue_check include/linux/blk-cgroup.h:837 [inline]
generic_make_request_checks+0xcfc/0x22e0 block/blk-core.c:2342
generic_make_request+0x23f/0xdf0 block/blk-core.c:2412
submit_bio+0xb1/0x430 block/blk-core.c:2576
submit_bh_wbc+0x5a7/0x760 fs/buffer.c:3090
submit_bh fs/buffer.c:3096 [inline]
write_dirty_buffer+0xab/0xf0 fs/buffer.c:3164
fsync_buffers_list fs/buffer.c:704 [inline]
sync_mapping_buffers+0x349/0xa90 fs/buffer.c:522
ext4_sync_parent fs/ext4/fsync.c:70 [inline]
ext4_sync_file+0xe10/0x1420 fs/ext4/fsync.c:120
vfs_fsync_range+0x13a/0x220 fs/sync.c:197
generic_write_sync include/linux/fs.h:2750 [inline]
ext4_file_write_iter+0x726/0xf20 fs/ext4/file.c:283
call_write_iter include/linux/fs.h:1821 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x51b/0x770 fs/read_write.c:487
vfs_write+0x1f3/0x540 fs/read_write.c:549
ksys_write+0x12b/0x2a0 fs/read_write.c:599
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f4d5b78a209
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4d5a0ff168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f4d5b89cf60 RCX: 00007f4d5b78a209
RDX: 000000000000da00 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 00007f4d5b7e4161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffea9cefb1f R14: 00007f4d5a0ff300 R15: 0000000000022000
Allocated by task 17888:
__do_kmalloc mm/slab.c:3727 [inline]
__kmalloc+0x15a/0x3c0 mm/slab.c:3736
kmalloc include/linux/slab.h:520 [inline]
sk_prot_alloc+0x1e2/0x2d0 net/core/sock.c:1483
sk_alloc+0x36/0xec0 net/core/sock.c:1537
packet_create+0x117/0x850 net/packet/af_packet.c:3259
__sock_create+0x3d8/0x740 net/socket.c:1365
sock_create net/socket.c:1416 [inline]
__sys_socket+0xef/0x200 net/socket.c:1458
__do_sys_socket net/socket.c:1467 [inline]
__se_sys_socket net/socket.c:1465 [inline]
__x64_sys_socket+0x6f/0xb0 net/socket.c:1465
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 17893:
__cache_free mm/slab.c:3503 [inline]
kfree+0xcc/0x210 mm/slab.c:3822
sk_prot_free net/core/sock.c:1520 [inline]
__sk_destruct+0x684/0x8a0 net/core/sock.c:1602
sk_destruct net/core/sock.c:1617 [inline]
__sk_free+0x165/0x3b0 net/core/sock.c:1628
sk_free+0x3b/0x50 net/core/sock.c:1639
sock_put include/net/sock.h:1713 [inline]
packet_release+0x890/0xb70 net/packet/af_packet.c:3088
__sock_release+0xcd/0x2a0 net/socket.c:599
sock_close+0x15/0x20 net/socket.c:1214
__fput+0x2ce/0x890 fs/file_table.c:278
task_work_run+0x148/0x1c0 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0xbf3/0x2be0 kernel/exit.c:870
do_group_exit+0x125/0x310 kernel/exit.c:967
get_signal+0x3f2/0x1f70 kernel/signal.c:2589
do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
The buggy address belongs to the object at ffff888092d389c0
which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 1836 bytes inside of
4096-byte region [ffff888092d389c0, ffff888092d399c0)
The buggy address belongs to the page:
page:ffffea00024b4e00 count:1 mapcount:0 mapping:ffff88813bff0dc0 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffffea0002ac8688 ffffea0002486c08 ffff88813bff0dc0
raw: 0000000000000000 ffff888092d389c0 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff888092d38f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888092d39000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888092d39080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888092d39100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888092d39180: 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: e8 3d 04 29 f9 callq 0xf9290444
7: e8 58 3f 4f f9 callq 0xf94f3f64
c: 4c 89 e8 mov %r13,%rax
f: 48 c1 e8 03 shr $0x3,%rax
13: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1)
17: 75 69 jne 0x82
19: 48 83 3d 9b 18 d9 01 cmpq $0x0,0x1d9189b(%rip) # 0x1d918bc
20: 00
21: 74 5b je 0x7e
23: fb sti
24: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
* 2a: bf 01 00 00 00 mov $0x1,%edi <-- trapping instruction
2f: e8 40 d1 ff ff callq 0xffffd174
34: 48 c7 c0 90 82 f1 89 mov $0xffffffff89f18290,%rax
3b: 48 c1 e8 03 shr $0x3,%rax
3f: 80 .byte 0x80