kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 20564 Comm: syz-executor.0 Not tainted 4.19.149-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:d_backing_inode include/linux/dcache.h:543 [inline] RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:722 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 04 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 08 48 8d 7b 58 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffff888041677af0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90005d3d000 RDX: 000000000000000b RSI: ffffffff8354466e RDI: 0000000000000058 RBP: ffff888041677bb8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888041677bb8 R14: 0000000000000400 R15: 0000000000000000 FS: 00007fb48d8ab700(0000) GS:ffff8880ae200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000016a5374 CR3: 0000000090b0a000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vfs_getattr+0x22/0x60 fs/stat.c:113 ovl_getattr+0x93c/0xec0 fs/overlayfs/inode.c:239 vfs_getattr_nosec+0xff/0x160 fs/stat.c:79 vfs_getattr fs/stat.c:116 [inline] vfs_statx+0x15a/0x210 fs/stat.c:189 vfs_lstat include/linux/fs.h:3138 [inline] __do_sys_newlstat fs/stat.c:350 [inline] __se_sys_newlstat+0x96/0x120 fs/stat.c:344 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45dd99 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb48d8aac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 0000000000020dc0 RCX: 000000000045dd99 RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000280 RBP: 000000000118c000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bfd4 R13: 00007fff331156bf R14: 00007fb48d8ab9c0 R15: 000000000118bfd4 Modules linked in: (syz-executor.5,20565,0):ocfs2_fill_super:1225 ERROR: status = -22 hfsplus: invalid session number or type of track overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. hfsplus: unable to find HFS+ superblock (syz-executor.5,20565,0):ocfs2_parse_options:1499 ERROR: Unrecognized mount option "fowner=00000000000000060928" or missing value (syz-executor.5,20565,1):ocfs2_fill_super:1225 ERROR: status = -22 hfsplus: invalid session number or type of track hfsplus: unable to find HFS+ superblock ---[ end trace 6e3ff3e6f37aa920 ]--- RIP: 0010:d_backing_inode include/linux/dcache.h:543 [inline] RIP: 0010:security_inode_getattr+0x46/0x140 security/security.c:722 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 04 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5d 08 48 8d 7b 58 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d7 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b RSP: 0018:ffff888041677af0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90005d3d000 (syz-executor.5,20605,1):ocfs2_parse_options:1499 ERROR: Unrecognized mount option "fowner=00000000000000060928" or missing value RDX: 000000000000000b RSI: ffffffff8354466e RDI: 0000000000000058 (syz-executor.5,20605,1):ocfs2_fill_super:1225 ERROR: status = -22 RBP: ffff888041677bb8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888041677bb8 R14: 0000000000000400 R15: 0000000000000000 FS: 00007fb48d8ab700(0000) GS:ffff8880ae300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c30ec43178 CR3: 0000000090b0a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400