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general protection fault in __hfsplus_setxattr

Status: upstream: reported C repro on 2026/04/14 23:20
Subsystems: hfs
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+bc70a12e438dadba4fb4@syzkaller.appspotmail.com
First crash: 54d, last: 22h11m
Cause bisection: failed (error log, bisect log)
  
▶ ▼ ✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision Error
f5838415-be6b-426e-b715-1a2d81be6d35 assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ✅ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ general protection fault in __hfsplus_setxattr 2026/05/25 13:42 2026/05/25 13:42 2026/05/25 14:26 c69befb30ac10e158cc9d1557b508ee3f0eca1de
▶ ▼ Discussions (4)
Title Replies (including bot) Last reply
[syzbot] Monthly hfs report (Jun 2026) 0 (1) 2026/06/03 04:32
[PATCH 1/3] hfs/hfsplus: fix u32 overflow in check_and_correct_requested_length 6 (6) 2026/05/04 23:31
[syzbot] [hfs?] general protection fault in __hfsplus_setxattr 1 (4) 2026/04/30 22:41
[PATCH] hfsplus: set attributes inode dirty at correct position 5 (5) 2026/04/16 21:52
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2026/04/30 22:41 40m tristmd@gmail.com patch upstream OK log
2026/04/15 02:08 30m eadavis@qq.com patch upstream error

Sample crash report:
loop0: detected capacity change from 0 to 1024
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 UID: 0 PID: 5977 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:hfsplus_create_attributes_file fs/hfsplus/xattr.c:320 [inline]
RIP: 0010:__hfsplus_setxattr+0x1c68/0x2860 fs/hfsplus/xattr.c:432
Code: 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 46 f8 80 ff 4d 8b 36 49 83 c6 08 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 29 f8 80 ff 4d 8b 36 49 8d 7e 90
RSP: 0018:ffffc90002f37420 EFLAGS: 00010212
RAX: 0000000000000001 RBX: fffff520005e6ea4 RCX: ffff88802f39db80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002f378f8 R08: ffffea00017e23f7 R09: 1ffffd40002fc47e
R10: dffffc0000000000 R11: fffff940002fc47f R12: dffffc0000000000
R13: ffff88802bb42a30 R14: 0000000000000008 R15: ffff88802bb43740
FS:  000055555c219500(0000) GS:ffff88812554b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f407bb7b000 CR3: 0000000077cf5000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 hfsplus_setxattr+0x124/0x340 fs/hfsplus/xattr.c:555
 hfsplus_trusted_setxattr+0x40/0x60 fs/hfsplus/xattr_trusted.c:30
 __vfs_setxattr+0x43c/0x480 fs/xattr.c:218
 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:252
 vfs_setxattr+0x163/0x360 fs/xattr.c:339
 do_setxattr fs/xattr.c:654 [inline]
 filename_setxattr+0x296/0x630 fs/xattr.c:682
 path_setxattrat+0x3eb/0x440 fs/xattr.c:726
 __do_sys_setxattr fs/xattr.c:760 [inline]
 __se_sys_setxattr fs/xattr.c:756 [inline]
 __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:756
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcafdf9c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd135f08f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fcafe215fa0 RCX: 00007fcafdf9c819
RDX: 0000200000001400 RSI: 00002000000001c0 RDI: 0000200000000380
RBP: 00007fcafe032c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000835 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcafe215fac R14: 00007fcafe215fa0 R15: 00007fcafe215fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_create_attributes_file fs/hfsplus/xattr.c:320 [inline]
RIP: 0010:__hfsplus_setxattr+0x1c68/0x2860 fs/hfsplus/xattr.c:432
Code: 8b 36 49 83 c6 30 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 46 f8 80 ff 4d 8b 36 49 83 c6 08 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 29 f8 80 ff 4d 8b 36 49 8d 7e 90
RSP: 0018:ffffc90002f37420 EFLAGS: 00010212
RAX: 0000000000000001 RBX: fffff520005e6ea4 RCX: ffff88802f39db80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002f378f8 R08: ffffea00017e23f7 R09: 1ffffd40002fc47e
R10: dffffc0000000000 R11: fffff940002fc47f R12: dffffc0000000000
R13: ffff88802bb42a30 R14: 0000000000000008 R15: ffff88802bb43740
FS:  000055555c219500(0000) GS:ffff88812544b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562d49fd15e0 CR3: 0000000077cf5000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	8b 36                	mov    (%rsi),%esi
   2:	49 83 c6 30          	add    $0x30,%r14
   6:	4c 89 f0             	mov    %r14,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  12:	74 08                	je     0x1c
  14:	4c 89 f7             	mov    %r14,%rdi
  17:	e8 46 f8 80 ff       	call   0xff80f862
  1c:	4d 8b 36             	mov    (%r14),%r14
  1f:	49 83 c6 08          	add    $0x8,%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 29 f8 80 ff       	call   0xff80f862
  39:	4d 8b 36             	mov    (%r14),%r14
  3c:	49 8d 7e 90          	lea    -0x70(%r14),%rdi

Crashes (153):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/04/14 18:53 upstream d60bc1401583 362d1323 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/04/14 15:36 upstream d60bc1401583 362d1323 .config console log report syz / log [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/06/05 23:32 upstream ddd664bbff63 48b6c3fa .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/06/03 15:43 upstream ba3e43a9e601 234057e5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in __hfsplus_setxattr
2026/06/03 14:23 upstream ba3e43a9e601 234057e5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/31 06:26 upstream 9d87d0fc8c8e 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in __hfsplus_setxattr
2026/05/29 11:48 upstream 8fde5d1d47f6 4624854e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/28 08:54 upstream eb3f4b7426cf 4c36e7e5 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in __hfsplus_setxattr
2026/05/26 16:35 upstream e8c2f9fdadee a3e47276 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in __hfsplus_setxattr
2026/05/26 14:54 upstream e8c2f9fdadee a3e47276 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/19 17:56 upstream ab5fce87a778 223544dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs general protection fault in __hfsplus_setxattr
2026/05/18 06:53 upstream e5d505e3664b de5aae85 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in __hfsplus_setxattr
2026/05/09 20:38 upstream 70390501d194 29233ece .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/06 21:33 upstream adc1e5c6203c cbcd9ea0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/04 19:25 upstream 6d35786de281 85f1bcf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root general protection fault in __hfsplus_setxattr
2026/05/04 14:49 upstream 6d35786de281 85f1bcf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/04 13:18 upstream 6d35786de281 85f1bcf2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/06/06 13:56 upstream 8e65320d91cd cc095639 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/06/06 00:40 upstream 06121e12c27a cc095639 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/06/03 13:03 upstream ba3e43a9e601 234057e5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/30 23:42 upstream f5e5d3509bff 6b4a8443 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/30 18:47 upstream f5e5d3509bff 6b4a8443 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/29 12:14 upstream 8fde5d1d47f6 a3d70215 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/28 07:01 upstream eb3f4b7426cf 4c36e7e5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/18 08:28 upstream e5d505e3664b de5aae85 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/18 03:16 upstream e5d505e3664b de5aae85 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/18 03:16 upstream e5d505e3664b de5aae85 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/10 12:01 upstream 1bfaee9d3351 29233ece .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/06 14:35 upstream 74fe02ce122a 23ad3581 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/05 02:49 upstream c7e4e4d5f7dc a898ba9c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/04 12:18 upstream 6d35786de281 85f1bcf2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/05/04 12:17 upstream 6d35786de281 85f1bcf2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/04/20 15:43 upstream c1f49dea2b8f e65da4ee .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/04/20 11:00 upstream bea8d77e45a8 303e2802 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/04/19 20:56 upstream faeab166167f 303e2802 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/04/19 19:40 upstream faeab166167f 303e2802 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/04/19 16:04 upstream faeab166167f 303e2802 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/04/19 13:25 upstream faeab166167f 303e2802 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/04/19 07:41 upstream eb5249b12507 303e2802 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/04/19 04:29 upstream eb5249b12507 303e2802 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root general protection fault in __hfsplus_setxattr
2026/06/01 23:02 linux-next f7af91adc230 1095583b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/06/01 20:28 linux-next f7af91adc230 8d8eeb3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/06/01 16:59 linux-next f7af91adc230 8d8eeb3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/06/01 10:40 linux-next f7af91adc230 8d8eeb3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/06/01 06:37 linux-next f7af91adc230 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/31 21:40 linux-next f7af91adc230 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/09 05:18 linux-next e98d21c170b0 0c5a8d8f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/05 09:43 linux-next 9d0d467c3572 a898ba9c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/05 09:43 linux-next 9d0d467c3572 a898ba9c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
2026/05/05 06:38 linux-next 9d0d467c3572 a898ba9c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root general protection fault in __hfsplus_setxattr
* Struck through repros no longer work on HEAD.