BUG: stack guard page was hit in sys_mkdir

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: e1b86e7f5cbb Merge branch 'android12-5.10' into `android12..
git tree: android12-5.10-lts
console output: https://syzkaller.appspot.com/x/log.txt?x=17ae80a9700000
kernel config: https://syzkaller.appspot.com/x/.config?x=35d59e0f6d92b6d1
dashboard link: https://syzkaller.appspot.com/bug?extid=4880d083b41a38a08bda
compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=134378a9700000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16dcfd7e700000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+4880d0...@syzkaller.appspotmail.com

BUG: stack guard page was hit at ffffc90000c6fff8 (stack is ffffc90000c70000..ffffc90000c77fff)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 386 Comm: syz-executor154 Not tainted 5.10.102-syzkaller-00171-ge1b86e7f5cbb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kasan_check_range+0xa/0x2f0 mm/kasan/generic.c:185
Code: 9c 2c ef 02 31 c0 5d c3 0f 0b eb 02 0f 0b b8 ea ff ff ff 5d c3 cc cc cc cc cc cc cc cc cc cc cc 55 48 89 e5 41 57 41 56 41 55 <41> 54 53 b0 01 48 85 f6 0f 84 09 02 00 00 48 89 fb 48 01 f3 0f 82
RSP: 0018:ffffc90000c70000 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff822621d8 RCX: ffffffff822621d8
RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff88811977f4ec
RBP: ffffc90000c70018 R08: ffffffff82262040 R09: ffffc90000c700c0
R10: fffff5200018e01f R11: 0000000000000000 R12: 0000000000000014
R13: 0000000000000000 R14: ffff88811977f4ec R15: ffffc90000c701e0
FS: 00007f3d3fc56700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000c6fff8 CR3: 000000010639c000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
memcpy+0x2d/0x70 mm/kasan/shadow.c:65
avc_has_perm_noaudit+0x358/0x4d0 security/selinux/avc.c:1165
selinux_inode_permission+0x37f/0x6a0 security/selinux/hooks.c:3119
security_inode_permission+0x94/0x120 security/security.c:1234
inode_permission+0xe0/0x520 fs/namei.c:474
xattr_permission+0xfb/0x380 fs/xattr.c:134
__vfs_getxattr+0xb7/0x6a0 fs/xattr.c:373
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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x5a4/0x6a0 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+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_slow+0x2b3/0x400 fs/namei.c:1628
lookup_one_len+0x17f/0x2c0 fs/namei.c:2642
incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212
dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967
__lookup_hash+0x141/0x290 fs/namei.c:1529
filename_create+0x207/0x770 fs/namei.c:3543
user_path_create fs/namei.c:3600 [inline]
do_mkdirat+0xbc/0x330 fs/namei.c:3740
__do_sys_mkdir fs/namei.c:3764 [inline]
__se_sys_mkdir fs/namei.c:3762 [inline]
__x64_sys_mkdir+0x60/0x70 fs/namei.c:3762
do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f3d3fca8d27
Code: ff ff ff ff c3 66 0f 1f 44 00 00 48 c7 c0 b8 ff ff ff 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 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:00007f3d3fc56078 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f3d3fc560d0 RCX: 00007f3d3fca8d27
RDX: 0000000000000003 RSI: 00000000000001ff RDI: 0000000020000180
RBP: 0000000000000006 R08: 0000000000000000 R09: 00007f3d3fc566b8
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3d3fc56090
R13: 00000000200005d0 R14: 0000000000000003 R15: 0000000000000004
Modules linked in:
---[ end trace 7206140222dd2895 ]---
RIP: 0010:kasan_check_range+0xa/0x2f0 mm/kasan/generic.c:185
Code: 9c 2c ef 02 31 c0 5d c3 0f 0b eb 02 0f 0b b8 ea ff ff ff 5d c3 cc cc cc cc cc cc cc cc cc cc cc 55 48 89 e5 41 57 41 56 41 55 <41> 54 53 b0 01 48 85 f6 0f 84 09 02 00 00 48 89 fb 48 01 f3 0f 82
RSP: 0018:ffffc90000c70000 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff822621d8 RCX: ffffffff822621d8
RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff88811977f4ec
RBP: ffffc90000c70018 R08: ffffffff82262040 R09: ffffc90000c700c0
R10: fffff5200018e01f R11: 0000000000000000 R12: 0000000000000014
R13: 0000000000000000 R14: ffff88811977f4ec R15: ffffc90000c701e0
FS: 00007f3d3fc56700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90000c6fff8 CR3: 000000010639c000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 9c pushfq
1: 2c ef sub $0xef,%al
3: 02 31 add (%rcx),%dh
5: c0 5d c3 0f rcrb $0xf,-0x3d(%rbp)
9: 0b eb or %ebx,%ebp
b: 02 0f add (%rdi),%cl
d: 0b b8 ea ff ff ff or -0x16(%rax),%edi
13: 5d pop %rbp
14: c3 retq
15: cc int3
16: cc int3
17: cc int3
18: cc int3
19: cc int3
1a: cc int3
1b: cc int3
1c: cc int3
1d: cc int3
1e: cc int3
1f: cc int3
20: 55 push %rbp
21: 48 89 e5 mov %rsp,%rbp
24: 41 57 push %r15
26: 41 56 push %r14
28: 41 55 push %r13
* 2a: 41 54 push %r12 <-- trapping instruction
2c: 53 push %rbx
2d: b0 01 mov $0x1,%al
2f: 48 85 f6 test %rsi,%rsi
32: 0f 84 09 02 00 00 je 0x241
38: 48 89 fb mov %rdi,%rbx
3b: 48 01 f3 add %rsi,%rbx
3e: 0f .byte 0xf
3f: 82 .byte 0x82


---
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[Tadeusz Struk]

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

--
Thanks,
Tadeusz