EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 285 Comm: syz-executor491 Not tainted 5.10.178-syzkaller-00127-g43c801dc3325 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:ext4_xattr_set_entry+0x498/0x3960 fs/ext4/xattr.c:1616
Code: 24 78 48 89 d8 48 c1 e8 03 48 89 84 24 28 01 00 00 42 80 3c 38 00 74 08 48 89 df e8 12 b3 ba ff 4c 8b 23 4c 89 e0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 d1 2e 00 00 4c 89 e8 48 2b 44 24 20 48
RSP: 0018:ffffc90000ae6f20 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90000ae7320 RCX: ffff88811eb862c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc90000ae71c0 R08: ffffffff81eccc44 R09: ffffed10220b7536
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000001c R15: dffffc0000000000
FS: 00005555558ca300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b87bbcf588 CR3: 000000011ea44000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ext4_xattr_ibody_set+0x7c/0x2b0 fs/ext4/xattr.c:2253
ext4_xattr_set_handle+0xc26/0x14e0 fs/ext4/xattr.c:2410
ext4_initxattrs+0xa7/0x120 fs/ext4/xattr_security.c:43
security_inode_init_security+0x252/0x390 security/security.c:1033
ext4_init_security+0x34/0x40 fs/ext4/xattr_security.c:57
__ext4_new_inode+0x3159/0x3f70 fs/ext4/ialloc.c:1319
ext4_create+0x267/0x530 fs/ext4/namei.c:2770
lookup_open fs/namei.c:3253 [inline]
open_last_lookups fs/namei.c:3323 [inline]
path_openat+0x1377/0x3000 fs/namei.c:3512
do_filp_open+0x21c/0x460 fs/namei.c:3542
do_sys_openat2+0x13f/0x6e0 fs/open.c:1217
do_sys_open fs/open.c:1233 [inline]
__do_sys_creat fs/open.c:1307 [inline]
__se_sys_creat fs/open.c:1301 [inline]
__x64_sys_creat+0x11f/0x160 fs/open.c:1301
do_syscall_64+0x34/0x70
entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f0466c8b799
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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:00007ffddacd2a58 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 33921e5989711fe9 RCX: 00007f0466c8b799
RDX: 00007f0466c49e13 RSI: 0000000000000000 RDI: 00000000200000c0
RBP: 00007f0466c4b030 R08: 0000000000000486 R09: 0000000000000000
R10: 00007ffddacd2920 R11: 0000000000000246 R12: 00007f0466c4b0c0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace ca57c76f9facbc9e ]---
RIP: 0010:ext4_xattr_set_entry+0x498/0x3960 fs/ext4/xattr.c:1616
Code: 24 78 48 89 d8 48 c1 e8 03 48 89 84 24 28 01 00 00 42 80 3c 38 00 74 08 48 89 df e8 12 b3 ba ff 4c 8b 23 4c 89 e0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 d1 2e 00 00 4c 89 e8 48 2b 44 24 20 48
RSP: 0018:ffffc90000ae6f20 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90000ae7320 RCX: ffff88811eb862c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc90000ae71c0 R08: ffffffff81eccc44 R09: ffffed10220b7536
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000001c R15: dffffc0000000000
FS: 00005555558ca300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b87bbcf588 CR3: 000000011ea44000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 24 78 and $0x78,%al
2: 48 89 d8 mov %rbx,%rax
5: 48 c1 e8 03 shr $0x3,%rax
9: 48 89 84 24 28 01 00 mov %rax,0x128(%rsp)
10: 00
11: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
16: 74 08 je 0x20
18: 48 89 df mov %rbx,%rdi
1b: e8 12 b3 ba ff callq 0xffbab332
20: 4c 8b 23 mov (%rbx),%r12
23: 4c 89 e0 mov %r12,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 d1 2e 00 00 jne 0x2f08
37: 4c 89 e8 mov %r13,%rax
3a: 48 2b 44 24 20 sub 0x20(%rsp),%rax
3f: 48 rex.W