audit: type=1804 audit(1678016231.246:4): pid=11312 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.1" name="/root/syzkaller-testdir3544408043/syzkaller.JQimxC/108/bus" dev="sda1" ino=14098 res=1
==================================================================
BUG: KASAN: slab-out-of-bounds in find_first_zero_bit+0x84/0x90 lib/find_bit.c:105
Read of size 8 at addr ffff8880b53c0b40 by task syz-executor.5/11318
CPU: 1 PID: 11318 Comm: syz-executor.5 Not tainted 4.14.307-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:251
kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:350
kasan_report mm/kasan/report.c:408 [inline]
__asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:429
find_first_zero_bit+0x84/0x90 lib/find_bit.c:105
bfs_create+0xfb/0x620 fs/bfs/dir.c:92
lookup_open+0x77a/0x1750 fs/namei.c:3241
do_last fs/namei.c:3334 [inline]
path_openat+0xe08/0x2970 fs/namei.c:3571
do_filp_open+0x179/0x3c0 fs/namei.c:3605
do_sys_open+0x296/0x410 fs/open.c:1081
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f0f2cda60f9
RSP: 002b:00007f0f2b318168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f0f2cec5f80 RCX: 00007f0f2cda60f9
RDX: 0000000000000000 RSI: 0000000000143142 RDI: 0000000020000240
RBP: 00007f0f2ce01ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc5b3dda1f R14: 00007f0f2b318300 R15: 0000000000022000
Allocated by task 11318:
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
__do_kmalloc mm/slab.c:3720 [inline]
__kmalloc+0x15a/0x400 mm/slab.c:3729
kmalloc include/linux/slab.h:493 [inline]
kzalloc include/linux/slab.h:661 [inline]
bfs_fill_super+0x3d5/0xd80 fs/bfs/inode.c:363
mount_bdev+0x2b3/0x360 fs/super.c:1134
mount_fs+0x92/0x2a0 fs/super.c:1237
vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
vfs_kern_mount fs/namespace.c:1036 [inline]
do_new_mount fs/namespace.c:2572 [inline]
do_mount+0xe65/0x2a30 fs/namespace.c:2905
SYSC_mount fs/namespace.c:3121 [inline]
SyS_mount+0xa8/0x120 fs/namespace.c:3098
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
Freed by task 7990:
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
__cache_free mm/slab.c:3496 [inline]
kfree+0xc9/0x250 mm/slab.c:3815
kvfree+0x45/0x50 mm/util.c:451
translate_table+0xa3b/0x14a0 net/ipv6/netfilter/ip6_tables.c:751
do_replace net/ipv6/netfilter/ip6_tables.c:1158 [inline]
do_ip6t_set_ctl+0x228/0x3b0 net/ipv6/netfilter/ip6_tables.c:1688
nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
nf_setsockopt+0x5f/0xb0 net/netfilter/nf_sockopt.c:115
ipv6_setsockopt+0xc0/0x120 net/ipv6/ipv6_sockglue.c:944
tcp_setsockopt+0x7b/0xc0 net/ipv4/tcp.c:2831
SYSC_setsockopt net/socket.c:1865 [inline]
SyS_setsockopt+0x110/0x1e0 net/socket.c:1844
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
The buggy address belongs to the object at ffff8880b53c0b40
which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
32-byte region [ffff8880b53c0b40, ffff8880b53c0b60)
The buggy address belongs to the page:
page:ffffea0002d4f000 count:1 mapcount:0 mapping:ffff8880b53c0000 index:0xffff8880b53c0fc1
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffff8880b53c0000 ffff8880b53c0fc1 000000010000003f
raw: ffffea0002a44260 ffffea0002c184e0 ffff88813fe741c0 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8880b53c0a00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
ffff8880b53c0a80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc
>ffff8880b53c0b00: fb fb fb fb fc fc fc fc 07 fc fc fc fc fc fc fc
^
ffff8880b53c0b80: 00 03 fc fc fc fc fc fc 00 01 fc fc fc fc fc fc
ffff8880b53c0c00: fb fb fb fb fc fc fc fc 00 01 fc fc fc fc fc fc
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