general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 1073 Comm: syz-executor.1 Not tainted 5.10.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:ext4_xattr_set_entry+0x457/0x3b90 fs/ext4/xattr.c:1586 Code: ff 80 3c 08 00 74 12 48 89 df e8 b4 0e be ff 48 b9 00 00 00 00 00 fc ff df 4c 89 bd 60 ff ff ff 4c 8b 2b 4c 89 e8 48 c1 e8 03 <8a> 04 08 84 c0 4c 8b b5 68 ff ff ff 0f 85 b6 2e 00 00 4c 89 f0 48 RSP: 0018:ffffc90002aff768 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffc90002aff9d0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002aff8c8 R08: ffffffff81e25f9f R09: ffffed1021d2d153 R10: ffffed1021d2d153 R11: 1ffff11021d2d152 R12: ffffc90002affa18 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fd4d9829700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555564ec728 CR3: 0000000117043000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_xattr_ibody_set+0x7c/0x2a0 fs/ext4/xattr.c:2227 ext4_xattr_set_handle+0xbb6/0x14c0 fs/ext4/xattr.c:2384 ext4_xattr_set+0x1d0/0x330 fs/ext4/xattr.c:2497 ext4_xattr_security_set+0x3b/0x50 fs/ext4/xattr_security.c:30 __vfs_setxattr+0x436/0x490 fs/xattr.c:177 __vfs_setxattr_noperm+0x11b/0x4e0 fs/xattr.c:208 __vfs_setxattr_locked+0x1f9/0x210 fs/xattr.c:266 vfs_setxattr+0xc8/0x240 fs/xattr.c:283 setxattr+0x178/0x330 fs/xattr.c:548 path_setxattr+0x11e/0x1d0 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+0x34/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7fd4e20970d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd4d9829168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd RAX: ffffffffffffffda RBX: 00007fd4e21b7050 RCX: 00007fd4e20970d9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000020000140 RBP: 00007fd4e20f2ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff3a69891f R14: 00007fd4d9829300 R15: 0000000000022000 Modules linked in: ---[ end trace cee9236adfd579c7 ]--- RIP: 0010:ext4_xattr_set_entry+0x457/0x3b90 fs/ext4/xattr.c:1586 Code: ff 80 3c 08 00 74 12 48 89 df e8 b4 0e be ff 48 b9 00 00 00 00 00 fc ff df 4c 89 bd 60 ff ff ff 4c 8b 2b 4c 89 e8 48 c1 e8 03 <8a> 04 08 84 c0 4c 8b b5 68 ff ff ff 0f 85 b6 2e 00 00 4c 89 f0 48 RSP: 0018:ffffc90002aff768 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffc90002aff9d0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002aff8c8 R08: ffffffff81e25f9f R09: ffffed1021d2d153 R10: ffffed1021d2d153 R11: 1ffff11021d2d152 R12: ffffc90002affa18 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007fd4d9829700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8ef2f64000 CR3: 0000000117043000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) 4: 74 12 je 0x18 6: 48 89 df mov %rbx,%rdi 9: e8 b4 0e be ff callq 0xffbe0ec2 e: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 15: fc ff df 18: 4c 89 bd 60 ff ff ff mov %r15,-0xa0(%rbp) 1f: 4c 8b 2b mov (%rbx),%r13 22: 4c 89 e8 mov %r13,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 8a 04 08 mov (%rax,%rcx,1),%al <-- trapping instruction 2c: 84 c0 test %al,%al 2e: 4c 8b b5 68 ff ff ff mov -0x98(%rbp),%r14 35: 0f 85 b6 2e 00 00 jne 0x2ef1 3b: 4c 89 f0 mov %r14,%rax 3e: 48 rex.W