BUG: stack guard page was hit in sys_mount (12)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: de64d941a71a Merge 5.10.112 into android12-5.10-lts
git tree: android12-5.10-lts
console+strace: https://syzkaller.appspot.com/x/log.txt?x=153d249ef00000
kernel config: https://syzkaller.appspot.com/x/.config?x=42eb3bb85aaa1fc9
dashboard link: https://syzkaller.appspot.com/bug?extid=87f111cd6085340b6699
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15f322f1f00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13fbd6b9f00000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+87f111...@syzkaller.appspotmail.com

BUG: stack guard page was hit at ffffc90000defff8 (stack is ffffc90000df0000..ffffc90000df7fff)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 409 Comm: syz-executor139 Not tainted 5.10.112-syzkaller-00287-gde64d941a71a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__find_get_block+0x89/0xbb0 fs/buffer.c:1332
Code: 48 8d 4c 24 20 48 c1 e9 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4a 89 04 39 66 42 c7 44 39 09 f3 f3 48 89 4c 24 10 42 c6 44 39 0b f3 <e8> 92 14 af ff 4c 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7
RSP: 0018:ffffc90000df0000 EFLAGS: 00010a02
RAX: f2f2f200f1f1f1f1 RBX: 0000000000000008 RCX: 1ffff920001be004
RDX: 0000000000001000 RSI: 00000000000000d8 RDI: ffff888100448880
RBP: ffffc90000df00e0 R08: ffffffff81e839d0 R09: ffffc90000df0200
R10: fffff520001be045 R11: 1ffff920001be040 R12: ffff888100448880
R13: 0000000000001000 R14: ffffc90000df0060 R15: dffffc0000000000
FS: 0000555556c313c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000defff8 CR3: 00000001142c8000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__getblk_gfp+0x2f/0x2a0 fs/buffer.c:1359
sb_getblk include/linux/buffer_head.h:327 [inline]
__ext4_get_inode_loc+0x3c2/0xd70 fs/ext4/inode.c:4399
ext4_get_inode_loc+0x128/0x1d0 fs/ext4/inode.c:4525
ext4_xattr_ibody_get+0x10c/0xb20 fs/ext4/xattr.c:587
ext4_xattr_get+0x115/0x810 fs/ext4/xattr.c:651
ext4_xattr_user_get+0xc2/0xf0 fs/ext4/xattr_user.c:28
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
incfs_getxattr fs/incfs/vfs.c:1668 [inline]
incfs_handler_getxattr+0xfa/0x2e0 fs/incfs/vfs.c:164
__vfs_getxattr+0x62f/0x700 fs/xattr.c:399
vfs_getxattr+0x54/0x60 fs/xattr.c:406
read_size_attr fs/incfs/vfs.c:293 [inline]
fetch_regular_inode+0x155/0x300 fs/incfs/vfs.c:374
dir_lookup+0x673/0x6e0 fs/incfs/vfs.c:1008
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x43d/0x6a0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:211
open_or_create_special_dir+0x49/0x160 fs/incfs/vfs.c:446
incfs_mount_fs+0x3eb/0x860 fs/incfs/vfs.c:1799
legacy_get_tree+0xf0/0x190 fs/fs_context.c:592
vfs_get_tree+0x88/0x290 fs/super.c:1549
do_new_mount+0x289/0xad0 fs/namespace.c:2899
path_mount+0x58d/0xce0 fs/namespace.c:3229
do_mount fs/namespace.c:3242 [inline]
__do_sys_mount fs/namespace.c:3450 [inline]
__se_sys_mount+0x2d2/0x3c0 fs/namespace.c:3427
__x64_sys_mount+0xbf/0xd0 fs/namespace.c:3427
do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fee8ded4079
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe4b317548 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000000003c RCX: 00007fee8ded4079
RDX: 0000000020000200 RSI: 0000000020000040 RDI: 0000000020000180
RBP: 00007ffe4b3175b0 R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe4b317580 R14: 00000000000f4240 R15: 00007ffe4b317574
Modules linked in:
---[ end trace 8f99932abfe8ccbb ]---
RIP: 0010:__find_get_block+0x89/0xbb0 fs/buffer.c:1332
Code: 48 8d 4c 24 20 48 c1 e9 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4a 89 04 39 66 42 c7 44 39 09 f3 f3 48 89 4c 24 10 42 c6 44 39 0b f3 <e8> 92 14 af ff 4c 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7
RSP: 0018:ffffc90000df0000 EFLAGS: 00010a02
RAX: f2f2f200f1f1f1f1 RBX: 0000000000000008 RCX: 1ffff920001be004
RDX: 0000000000001000 RSI: 00000000000000d8 RDI: ffff888100448880
RBP: ffffc90000df00e0 R08: ffffffff81e839d0 R09: ffffc90000df0200
R10: fffff520001be045 R11: 1ffff920001be040 R12: ffff888100448880
R13: 0000000000001000 R14: ffffc90000df0060 R15: dffffc0000000000
FS: 0000555556c313c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000defff8 CR3: 00000001142c8000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 8d 4c 24 20 lea 0x20(%rsp),%rcx
5: 48 c1 e9 03 shr $0x3,%rcx
9: 48 b8 f1 f1 f1 f1 00 movabs $0xf2f2f200f1f1f1f1,%rax
10: f2 f2 f2
13: 4a 89 04 39 mov %rax,(%rcx,%r15,1)
17: 66 42 c7 44 39 09 f3 movw $0xf3f3,0x9(%rcx,%r15,1)
1e: f3
1f: 48 89 4c 24 10 mov %rcx,0x10(%rsp)
24: 42 c6 44 39 0b f3 movb $0xf3,0xb(%rcx,%r15,1)
* 2a: e8 92 14 af ff callq 0xffaf14c1 <-- trapping instruction
2f: 4c 89 f3 mov %r14,%rbx
32: 48 c1 eb 03 shr $0x3,%rbx
36: 42 80 3c 3b 00 cmpb $0x0,(%rbx,%r15,1)
3b: 74 08 je 0x45
3d: 4c 89 f7 mov %r14,%rdi


---
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[Tadeusz Struk]

#syz dup: BUG: stack guard page was hit in file_open