BUG: stack guard page was hit in sys_lsetxattr

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 0347b1658399 Merge 5.10.93 into android12-5.10-lts
git tree: android12-5.10-lts
console output: https://syzkaller.appspot.com/x/log.txt?x=12460a48700000
kernel config: https://syzkaller.appspot.com/x/.config?x=e0f3947457f8d2a4
dashboard link: https://syzkaller.appspot.com/bug?extid=9496b02bafbd40aff86c
compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9496b0...@syzkaller.appspotmail.com

BUG: stack guard page was hit at ffffc9000372fff8 (stack is ffffc90003730000..ffffc90003737fff)
kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 27271 Comm: syz-executor.5 Not tainted 5.10.93-syzkaller-01028-g0347b1658399 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:avc_has_perm_noaudit+0x85/0x4d0 security/selinux/avc.c:1150
Code: 85 48 c7 44 24 50 b0 ba 2b 82 48 8d 5c 24 40 48 c1 eb 03 42 c7 04 3b f1 f1 f1 f1 42 c7 44 3b 0b f3 f3 f3 f3 42 c6 44 3b 0f f3 <e8> 46 30 41 ff ba 38 00 00 00 48 8d 7c 24 60 31 f6 e8 15 27 7b ff
RSP: 0018:ffffc90003730000 EFLAGS: 00010a02
RAX: 0bcd21576fe74e00 RBX: 1ffff920006e6008 RCX: 0000000000000005
RDX: 0000000000000079 RSI: 0000000000000079 RDI: ffffffff86f29520
RBP: ffffc90003730108 R08: 0000000000200000 R09: 0000000000000000
R10: 0000000000000002 R11: ffff8881604e2780 R12: 0000000000200000
R13: ffffffff86f29520 R14: 0000000000000079 R15: dffffc0000000000
FS: 00007fa1195bf700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000372fff8 CR3: 00000001193c3000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
cred_has_capability+0x1b5/0x420 security/selinux/hooks.c:1619
selinux_capable+0x39/0x50 security/selinux/hooks.c:2137
security_capable+0x69/0xd0 security/security.c:748
ns_capable_common kernel/capability.c:375 [inline]
ns_capable+0x6f/0xe0 kernel/capability.c:396
cap_inode_setxattr+0xbb/0xe0 security/commoncap.c:951
selinux_inode_setxattr+0x1d4/0x10a0 security/selinux/hooks.c:3187
security_inode_setxattr+0xce/0x180 security/security.c:1268
__vfs_setxattr_locked+0x96/0x210 fs/xattr.c:258
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
incfs_setxattr fs/incfs/vfs.c:1702 [inline]
incfs_handler_setxattr+0x101/0x330 fs/incfs/vfs.c:172
__vfs_setxattr+0x3c6/0x420 fs/xattr.c:177
__vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208
__vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266
vfs_setxattr+0x11e/0x2d0 fs/xattr.c:283
setxattr+0x1ea/0x3f0 fs/xattr.c:548
path_setxattr+0x164/0x240 fs/xattr.c:567
__do_sys_lsetxattr fs/xattr.c:589 [inline]
__se_sys_lsetxattr fs/xattr.c:585 [inline]
__x64_sys_lsetxattr+0xc2/0xe0 fs/xattr.c:585
do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fa11a449059
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:00007fa1195bf168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007fa11a55bf60 RCX: 00007fa11a449059
RDX: 00000000200001c0 RSI: 0000000020000140 RDI: 0000000020000180
RBP: 00007fa11a4a308d R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000013 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe5219754f R14: 00007fa1195bf300 R15: 0000000000022000
Modules linked in:
---[ end trace e25e98a1a6c41932 ]---
RIP: 0010:avc_has_perm_noaudit+0x85/0x4d0 security/selinux/avc.c:1150
Code: 85 48 c7 44 24 50 b0 ba 2b 82 48 8d 5c 24 40 48 c1 eb 03 42 c7 04 3b f1 f1 f1 f1 42 c7 44 3b 0b f3 f3 f3 f3 42 c6 44 3b 0f f3 <e8> 46 30 41 ff ba 38 00 00 00 48 8d 7c 24 60 31 f6 e8 15 27 7b ff
RSP: 0018:ffffc90003730000 EFLAGS: 00010a02
RAX: 0bcd21576fe74e00 RBX: 1ffff920006e6008 RCX: 0000000000000005
RDX: 0000000000000079 RSI: 0000000000000079 RDI: ffffffff86f29520
RBP: ffffc90003730108 R08: 0000000000200000 R09: 0000000000000000
R10: 0000000000000002 R11: ffff8881604e2780 R12: 0000000000200000
R13: ffffffff86f29520 R14: 0000000000000079 R15: dffffc0000000000
FS: 00007fa1195bf700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000372fff8 CR3: 00000001193c3000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 85 48 c7 test %ecx,-0x39(%rax)
3: 44 24 50 rex.R and $0x50,%al
6: b0 ba mov $0xba,%al
8: 2b 82 48 8d 5c 24 sub 0x245c8d48(%rdx),%eax
e: 40 rex
f: 48 c1 eb 03 shr $0x3,%rbx
13: 42 c7 04 3b f1 f1 f1 movl $0xf1f1f1f1,(%rbx,%r15,1)
1a: f1
1b: 42 c7 44 3b 0b f3 f3 movl $0xf3f3f3f3,0xb(%rbx,%r15,1)
22: f3 f3
24: 42 c6 44 3b 0f f3 movb $0xf3,0xf(%rbx,%r15,1)
* 2a: e8 46 30 41 ff callq 0xff413075 <-- trapping instruction
2f: ba 38 00 00 00 mov $0x38,%edx
34: 48 8d 7c 24 60 lea 0x60(%rsp),%rdi
39: 31 f6 xor %esi,%esi
3b: e8 15 27 7b ff callq 0xff7b2755


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 0347b1658399 Merge 5.10.93 into android12-5.10-lts
git tree: android12-5.10-lts

console output: https://syzkaller.appspot.com/x/log.txt?x=1773453db00000

kernel config: https://syzkaller.appspot.com/x/.config?x=e0f3947457f8d2a4
dashboard link: https://syzkaller.appspot.com/bug?extid=9496b02bafbd40aff86c
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=12ac25ffb00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12c602e0700000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9496b0...@syzkaller.appspotmail.com

BUG: stack guard page was hit at ffffc90000b5fff8 (stack is ffffc90000b60000..ffffc90000b67fff)

kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN

CPU: 0 PID: 365 Comm: syz-executor564 Not tainted 5.10.93-syzkaller-01028-g0347b1658399 #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:avc_has_perm_noaudit+0x85/0x4d0 security/selinux/avc.c:1150
Code: 85 48 c7 44 24 50 b0 ba 2b 82 48 8d 5c 24 40 48 c1 eb 03 42 c7 04 3b f1 f1 f1 f1 42 c7 44 3b 0b f3 f3 f3 f3 42 c6 44 3b 0f f3 <e8> 46 30 41 ff ba 38 00 00 00 48 8d 7c 24 60 31 f6 e8 15 27 7b ff

RSP: 0018:ffffc90000b60000 EFLAGS: 00010a02
RAX: 93ef4605529ecc00 RBX: 1ffff9200016c008 RCX: 0000000000000005

RDX: 0000000000000079 RSI: 0000000000000079 RDI: ffffffff86f29520

RBP: ffffc90000b60108 R08: 0000000000200000 R09: 0000000000000000
R10: 0000000000000002 R11: ffff88811ce20000 R12: 0000000000200000

R13: ffffffff86f29520 R14: 0000000000000079 R15: dffffc0000000000

FS: 000055555602e300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: ffffc90000b5fff8 CR3: 00000001071b8000 CR4: 00000000003506b0

RIP: 0033:0x7ff3a6aa6089
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe5a896598 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff3a6aa6089
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000180
RBP: 00007ff3a6a6a070 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff3a6a6a100
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 0910dfab201d7a5e ]---

RIP: 0010:avc_has_perm_noaudit+0x85/0x4d0 security/selinux/avc.c:1150
Code: 85 48 c7 44 24 50 b0 ba 2b 82 48 8d 5c 24 40 48 c1 eb 03 42 c7 04 3b f1 f1 f1 f1 42 c7 44 3b 0b f3 f3 f3 f3 42 c6 44 3b 0f f3 <e8> 46 30 41 ff ba 38 00 00 00 48 8d 7c 24 60 31 f6 e8 15 27 7b ff

RSP: 0018:ffffc90000b60000 EFLAGS: 00010a02
RAX: 93ef4605529ecc00 RBX: 1ffff9200016c008 RCX: 0000000000000005

RDX: 0000000000000079 RSI: 0000000000000079 RDI: ffffffff86f29520

RBP: ffffc90000b60108 R08: 0000000000200000 R09: 0000000000000000
R10: 0000000000000002 R11: ffff88811ce20000 R12: 0000000000200000

R13: ffffffff86f29520 R14: 0000000000000079 R15: dffffc0000000000

FS: 000055555602e300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000

CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033

CR2: ffffc90000b5fff8 CR3: 00000001071b8000 CR4: 00000000003506b0

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+9496b0...@syzkaller.appspotmail.com

Tested on:

commit: fd4c6594 ANDROID: incremental-fs: fix mount_fs issue
git tree: https://android.googlesource.com/kernel/common
kernel config: https://syzkaller.appspot.com/x/.config?x=c346f7c7af5fc789

dashboard link: https://syzkaller.appspot.com/bug?extid=9496b02bafbd40aff86c
compiler: Debian clang version 11.0.1-2, GNU ld (GNU Binutils for Debian) 2.35.2

Note: testing is done by a robot and is best-effort only.