syzbot

 sign-in | mailing list | source | docs
🐞 Open [134]
🐞 Fixed [69]
🐞 Invalid [295]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

general protection fault in fuse_atomic_open

Status: upstream: reported C repro on 2023/07/16 23:36
Reported-by: syzbot+8e06855e2fa000e0c107@syzkaller.appspotmail.com
First crash: 1068d, last: 1d11h
Cause bisection: failed (error log, bisect log)
  
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 general protection fault in fuse_atomic_open origin:downstream 2 C done 29 1d19h 1068d 0/2 upstream: reported C repro on 2023/07/17 00:03
android-5-15 general protection fault in fuse_atomic_open (2) origin:downstream 2 C done 42 11d 1055d 0/2 upstream: reported C repro on 2023/07/29 15:55
android-5-15 general protection fault in fuse_atomic_open 2 1 1173d 1173d 0/2 auto-obsoleted due to no activity on 2023/07/01 15:58
android-6-12 general protection fault in fuse_atomic_open origin:downstream 2 C 22 15d 301d 0/1 premoderation: reported C repro on 2025/08/22 12:42
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/06/05 05:22 12m retest repro android13-5.10-lts log
2026/06/05 05:22 12m retest repro android13-5.10-lts log
2026/06/05 05:22 12m retest repro android13-5.10-lts log
2026/06/05 05:22 3m retest repro android13-5.10-lts error
2026/06/05 05:22 9m retest repro android13-5.10-lts error
2026/05/08 18:18 14m retest repro android13-5.10-lts report log
2026/05/08 18:18 14m retest repro android13-5.10-lts report log
2026/05/08 18:18 15m retest repro android13-5.10-lts report log
2026/05/08 18:18 14m retest repro android13-5.10-lts report log
2026/03/31 13:29 6m retest repro android13-5.10-lts report log
▶ ▼ Fix bisection attempts (4)
Created Duration User Patch Repo Result
2026/01/06 09:36 1h33m bisect fix android13-5.10-lts OK (0) job log log
2024/03/06 12:22 33m bisect fix android13-5.10-lts OK (0) job log log
2023/10/26 04:01 44m bisect fix android13-5.10-lts OK (0) job log log
2023/09/26 01:12 33m bisect fix android13-5.10-lts OK (0) job log log

Sample crash report:
general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037]
CPU: 0 PID: 381 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:d_really_is_positive include/linux/dcache.h:499 [inline]
RIP: 0010:fuse_atomic_open+0x2c8/0x2250 fs/fuse/dir.c:853
Code: 75 ff 44 89 f0 83 e0 40 4c 8b 74 24 10 75 07 e8 9e da 75 ff eb 32 4c 89 3c 24 48 8b 44 24 40 4c 8d 78 30 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 d9 5c b0 ff 49 83 3f 00 74 5b e8
RSP: 0018:ffffc90000d973a0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: fffff520001b2e88 RCX: 0000000000000000
RDX: ffff888111222780 RSI: 0000000000000040 RDI: 0000000000000000
RBP: ffffc90000d979b0 R08: ffff888111222780 R09: fffff520001b2de8
R10: 00000000fffffffe R11: 0000000000000000 R12: ffff8881112a8000
R13: dffffc0000000000 R14: ffff8881211e5680 R15: 0000000000000031
FS:  00007fe563d286c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe563d27ff8 CR3: 0000000111361000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 atomic_open fs/namei.c:3122 [inline]
 lookup_open fs/namei.c:3227 [inline]
 open_last_lookups fs/namei.c:3325 [inline]
 path_openat+0xf99/0x31c0 fs/namei.c:3514
 do_filp_open+0x1e2/0x410 fs/namei.c:3544
 do_sys_openat2+0x19f/0x750 fs/open.c:1219
 do_sys_open fs/open.c:1235 [inline]
 __do_sys_creat fs/open.c:1311 [inline]
 __se_sys_creat fs/open.c:1305 [inline]
 __x64_sys_creat+0x8e/0xb0 fs/open.c:1305
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fe563ee6e59
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:00007fe563d28028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fe564160090 RCX: 00007fe563ee6e59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007fe563f7cd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe564160128 R14: 00007fe564160090 R15: 00007ffdaf0177c8
Modules linked in:
---[ end trace 030bbd8648863194 ]---
RIP: 0010:d_really_is_positive include/linux/dcache.h:499 [inline]
RIP: 0010:fuse_atomic_open+0x2c8/0x2250 fs/fuse/dir.c:853
Code: 75 ff 44 89 f0 83 e0 40 4c 8b 74 24 10 75 07 e8 9e da 75 ff eb 32 4c 89 3c 24 48 8b 44 24 40 4c 8d 78 30 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 d9 5c b0 ff 49 83 3f 00 74 5b e8
RSP: 0018:ffffc90000d973a0 EFLAGS: 00010206
RAX: 0000000000000006 RBX: fffff520001b2e88 RCX: 0000000000000000
RDX: ffff888111222780 RSI: 0000000000000040 RDI: 0000000000000000
RBP: ffffc90000d979b0 R08: ffff888111222780 R09: fffff520001b2de8
R10: 00000000fffffffe R11: 0000000000000000 R12: ffff8881112a8000
R13: dffffc0000000000 R14: ffff8881211e5680 R15: 0000000000000031
FS:  00007fe563d286c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe563d27ff8 CR3: 0000000111361000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	75 ff                	jne    0x1
   2:	44 89 f0             	mov    %r14d,%eax
   5:	83 e0 40             	and    $0x40,%eax
   8:	4c 8b 74 24 10       	mov    0x10(%rsp),%r14
   d:	75 07                	jne    0x16
   f:	e8 9e da 75 ff       	call   0xff75dab2
  14:	eb 32                	jmp    0x48
  16:	4c 89 3c 24          	mov    %r15,(%rsp)
  1a:	48 8b 44 24 40       	mov    0x40(%rsp),%rax
  1f:	4c 8d 78 30          	lea    0x30(%rax),%r15
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ff             	mov    %r15,%rdi
  34:	e8 d9 5c b0 ff       	call   0xffb05d12
  39:	49 83 3f 00          	cmpq   $0x0,(%r15)
  3d:	74 5b                	je     0x9a
  3f:	e8                   	.byte 0xe8

Crashes (96):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/05/15 19:55 android13-5.10-lts 1b32327554da 9cd3beaa .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/02/18 12:31 android13-5.10-lts e8b14e1cefe8 39751c21 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/02/08 02:45 android13-5.10-lts 58c592510fcd 4c131dc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/02/01 21:14 android13-5.10-lts 186f761c519d 6b8752f2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/10/08 03:25 android13-5.10-lts 2ece552169c2 7e2882b3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/09/17 19:55 android13-5.10-lts 911f602c2237 e2beed91 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/05/30 20:20 android13-5.10-lts cf6ed0f1511d 3d2f584d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/04/04 05:12 android13-5.10-lts 094fc3778d6b d7ae3a11 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/01/30 23:15 android13-5.10-lts fbe98d68b6b3 4c6ac32f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/10/21 09:49 android13-5.10-lts e5e5644ea27f cd6fc0a3 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/07/07 04:57 android13-5.10-lts 3feee789f446 2a40360c .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/03/17 16:26 android13-5.10-lts dd976ecce2ce d615901c .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2023/11/07 06:04 android13-5.10-lts d30b996835c0 83211397 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2023/07/16 23:27 android13-5.10-lts 59b65efafe20 35d9ecc5 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/06/18 02:35 android13-5.10-lts a36936eeef1e b62b3ded .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/06/16 04:08 android13-5.10-lts a36936eeef1e 50bb0618 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/06/15 00:47 android13-5.10-lts d11359bcf2ac 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/04/19 17:46 android13-5.10-lts cc0ae2abdc73 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/04/11 23:37 android13-5.10-lts cc0ae2abdc73 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/03/03 05:27 android13-5.10-lts dad37bbb13a8 28b83e23 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/02/05 18:07 android13-5.10-lts 58c592510fcd 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/02/01 20:33 android13-5.10-lts 186f761c519d 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2026/01/14 14:08 android13-5.10-lts e253c52bbdfc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/12/05 02:57 android13-5.10-lts 9286af17ed5f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/12/01 00:39 android13-5.10-lts 9286af17ed5f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/11/10 15:19 android13-5.10-lts ab3e1c0dd1ff 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/11/09 21:51 android13-5.10-lts ab3e1c0dd1ff 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/11/02 11:55 android13-5.10-lts ab3e1c0dd1ff 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/11/01 16:54 android13-5.10-lts ab3e1c0dd1ff 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/10/15 05:16 android13-5.10-lts 2ece552169c2 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/10/09 23:35 android13-5.10-lts 2ece552169c2 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/09/26 12:07 android13-5.10-lts 911f602c2237 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/09/20 18:48 android13-5.10-lts 911f602c2237 67c37560 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/09/17 19:01 android13-5.10-lts 911f602c2237 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/08/29 18:01 android13-5.10-lts 1154f779f3f3 3e1beec6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/08/14 01:20 android13-5.10-lts 1154f779f3f3 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/08/10 22:11 android13-5.10-lts 1154f779f3f3 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/07/26 02:26 android13-5.10-lts ad9a98ef27a4 fb8f743d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/06/18 10:49 android13-5.10-lts d76d4cd0623a e77fae15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/05/16 16:51 android13-5.10-lts 7e2543346ff7 cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/04/27 21:35 android13-5.10-lts ba8b8b193394 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/04/03 23:37 android13-5.10-lts 094fc3778d6b d7ae3a11 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/04/03 03:18 android13-5.10-lts 094fc3778d6b c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/03/25 15:59 android13-5.10-lts 094fc3778d6b 875573af .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/02/28 03:07 android13-5.10-lts 3f5f2283d684 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/02/19 22:44 android13-5.10-lts 6686f2996d23 b257a9b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2025/01/30 22:38 android13-5.10-lts fbe98d68b6b3 4c6ac32f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/12/31 17:58 android13-5.10-lts 49e8ba0a684f d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/12/28 22:57 android13-5.10-lts 4055d754db6f d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/12/26 02:56 android13-5.10-lts 4055d754db6f 444551c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/11/25 08:51 android13-5.10-lts b14940b90491 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/11/24 05:25 android13-5.10-lts b14940b90491 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/11/23 18:38 android13-5.10-lts b14940b90491 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/10/21 09:28 android13-5.10-lts e5e5644ea27f cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/10/02 15:42 android13-5.10-lts 1e85e7850fed 02f9582a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/09/28 05:42 android13-5.10-lts 8d23314f588a 440b26ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/09/23 00:09 android13-5.10-lts 8d23314f588a 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/09/19 05:46 android13-5.10-lts 8d23314f588a c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/09/03 22:02 android13-5.10-lts 1c5354a314ea 326f9c5a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
2024/09/01 07:56 android13-5.10-lts 1c5354a314ea 1eda0d14 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-10 general protection fault in fuse_atomic_open
* Struck through repros no longer work on HEAD.