general protection fault in step_into

Status: premoderation: reported C repro on 2025/06/30 23:58
Bug presence: origin:downstream
[Documentation on labels]
Reported-by: syzbot+7b9e9955549f7b08b57a@syzkaller.appspotmail.com
First crash: 451d, last: 1h10m
▶ ▼ Bug presence (3)
Date Name Commit Repro Result
2025/07/25 android16-6.12 (ToT) 437e1d666d1d C [report] general protection fault in step_into
2025/07/25 lts (merge base) e0e2f7824338 C Didn't crash
2025/07/25 upstream (ToT) 2942242dde89 C Didn't crash
▶ ▼ Similar bugs (8)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 general protection fault in step_into origin:lts-only 11 syz, C done 313 22d 894d 0/3 upstream: reported C repro on 2024/04/13 08:21
upstream general protection fault in step_into fs 2 1 2216d 2212d 0/29 auto-closed as invalid on 2020/11/28 01:59
android-5-10 general protection fault in step_into 2 syz, C done 352 3d19h 1229d 0/2 upstream: reported C repro on 2023/05/14 14:12
linux-6.1 KASAN: null-ptr-deref Read in step_into origin:lts-only 11 syz, C inconclusive 109 26d 901d 0/3 upstream: reported C repro on 2024/04/06 11:08
android-5-15 general protection fault in step_into origin:downstream 2 syz, C done 139 1d07h 1229d 0/2 upstream: reported C repro on 2023/05/14 14:01
android-6-1 general protection fault in step_into origin:downstream 2 syz, C done inconclusive 109 13d 1229d 0/2 upstream: reported C repro on 2023/05/14 14:12
linux-6.6 general protection fault in step_into origin:lts-only 2 syz, C inconclusive 22 157d 375d 0/2 upstream: reported C repro on 2025/09/14 20:10
upstream BUG: unable to handle kernel paging request in step_into ntfs3 11 syz, C error done 5 992d 1359d 0/29 auto-obsoleted due to no activity on 2024/05/25 15:27
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/09/23 00:38 11m retest repro android16-6.12 report job log log
2026/09/23 00:38 12m retest repro android16-6.12 report job log log
2026/09/23 00:38 12m retest repro android16-6.12 report job log log
2026/09/23 00:38 13m retest repro android16-6.12 report job log log
2026/06/27 17:36 18m retest repro android16-6.12 log
2026/06/27 17:36 15m retest repro android16-6.12 log
2026/06/27 17:36 16m retest repro android16-6.12 log
2026/06/27 17:36 16m retest repro android16-6.12 log
2026/04/08 07:42 19m retest repro android16-6.12 report log
2026/03/23 07:47 15m retest repro android16-6.12 report log

Sample crash report:
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 313 Comm: syz-executor153 Not tainted syzkaller #0 ffcc03b7087851531ca4478bc989862769751c2e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:traverse_mounts fs/namei.c:1467 [inline]
RIP: 0010:handle_mounts fs/namei.c:1579 [inline]
RIP: 0010:step_into+0x117/0xf10 fs/namei.c:1899
Code: 8d 73 38 c6 44 24 5f 00 43 0f b6 04 3c 84 c0 4d 89 fd 0f 85 f3 0b 00 00 45 8b 36 4c 8b bc 24 88 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 f2 0b 00 00 45 8b 3f 44 89 fe 81 e6 00
RSP: 0018:ffffc9000128f7e0 EFLAGS: 00010203
RAX: 0000000000000001 RBX: ffffc9000128f9e0 RCX: ffff888128d7b900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000128f8d8 R08: ffff88811d66ad9f R09: 1ffff11023acd5b3
R10: dffffc0000000000 R11: ffffed1023acd5b4 R12: 1ffff92000251f43
R13: dffffc0000000000 R14: 0000000000004005 R15: 000000000000000f
FS:  00007f4bf4c676c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000a000 CR3: 0000000129d30000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 walk_component+0x253/0x450 fs/namei.c:2067
 lookup_last fs/namei.c:2564 [inline]
 path_lookupat+0x155/0x440 fs/namei.c:2588
 filename_lookup+0x22d/0x5a0 fs/namei.c:2617
 vfs_statx+0x106/0x210 fs/stat.c:312
 do_statx fs/stat.c:728 [inline]
 __do_sys_statx fs/stat.c:795 [inline]
 __se_sys_statx+0x247/0x470 fs/stat.c:771
 __x64_sys_statx+0xc3/0xf0 fs/stat.c:771
 x64_sys_call+0x2e78/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:333
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f4bf4c99f39
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 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 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4bf4c67218 EFLAGS: 00000246 ORIG_RAX: 000000000000014c
RAX: ffffffffffffffda RBX: 00007f4bf4d4ab68 RCX: 00007f4bf4c99f39
RDX: 0000000000001000 RSI: 0000200000000640 RDI: 00000000ffffff9c
RBP: 00007f4bf4d4ab60 R08: 0000000000000000 R09: 33203a6b63617473
R10: 0000000000000100 R11: 0000000000000246 R12: 00007f4bf4d18424
R13: 0000200000008200 R14: 00002000000020c0 R15: 00007f4bf4d1403a
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:traverse_mounts fs/namei.c:1467 [inline]
RIP: 0010:handle_mounts fs/namei.c:1579 [inline]
RIP: 0010:step_into+0x117/0xf10 fs/namei.c:1899
Code: 8d 73 38 c6 44 24 5f 00 43 0f b6 04 3c 84 c0 4d 89 fd 0f 85 f3 0b 00 00 45 8b 36 4c 8b bc 24 88 00 00 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 f2 0b 00 00 45 8b 3f 44 89 fe 81 e6 00
RSP: 0018:ffffc9000128f7e0 EFLAGS: 00010203
RAX: 0000000000000001 RBX: ffffc9000128f9e0 RCX: ffff888128d7b900
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000128f8d8 R08: ffff88811d66ad9f R09: 1ffff11023acd5b3
R10: dffffc0000000000 R11: ffffed1023acd5b4 R12: 1ffff92000251f43
R13: dffffc0000000000 R14: 0000000000004005 R15: 000000000000000f
FS:  00007f4bf4c676c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000a000 CR3: 0000000129d30000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	8d 73 38             	lea    0x38(%rbx),%esi
   3:	c6 44 24 5f 00       	movb   $0x0,0x5f(%rsp)
   8:	43 0f b6 04 3c       	movzbl (%r12,%r15,1),%eax
   d:	84 c0                	test   %al,%al
   f:	4d 89 fd             	mov    %r15,%r13
  12:	0f 85 f3 0b 00 00    	jne    0xc0b
  18:	45 8b 36             	mov    (%r14),%r14d
  1b:	4c 8b bc 24 88 00 00 	mov    0x88(%rsp),%r15
  22:	00
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 f2 0b 00 00    	jne    0xc29
  37:	45 8b 3f             	mov    (%r15),%r15d
  3a:	44 89 fe             	mov    %r15d,%esi
  3d:	81                   	.byte 0x81
  3e:	e6 00                	out    %al,$0x0

Crashes (58):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/24 23:12 android16-6.12 558b94a8d268 3c3cdf19 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/05/31 23:53 android16-6.12 34c0581154b9 6b4a8443 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/02/20 18:07 android16-6.12 879c70c90804 17d780d6 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/11/04 11:13 android16-6.12 0d6730ee6542 686bf657 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/07/24 19:47 android16-6.12 379b99745e88 65d60d73 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/09/03 18:56 android16-6.12 1eab233d5fae 6a988719 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/08/18 04:26 android16-6.12 83f7e9ec53bb 1e72964b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/07/27 03:32 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/07/26 03:17 android16-6.12 579215f16d4e 492bab15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/07/24 20:39 android16-6.12 41c3d4eb44a7 dd737a83 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/07/15 09:37 android16-6.12 5dd528d5e93a a4ed0f4f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/07/12 19:37 android16-6.12 0026e4ecedf0 d78ea535 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/07/04 22:11 android16-6.12 d36feda1de57 fcece630 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/07/04 18:12 android16-6.12 d36feda1de57 fcece630 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/06/13 13:21 android16-6.12 8f68185b8289 1d2f3589 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/06/11 17:21 android16-6.12 17584f778119 d93a6ab6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/06/02 15:43 android16-6.12 be0db38c7358 62fe1528 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/06/02 06:34 android16-6.12 be0db38c7358 1095583b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/06/01 01:16 android16-6.12 34c0581154b9 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/05/31 23:16 android16-6.12 34c0581154b9 6b4a8443 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/05/16 13:38 android16-6.12 be343ff665e2 a15a64a6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/05/16 05:38 android16-6.12 a5b3d3ca31af 81fb92f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/05/16 00:28 android16-6.12 a5b3d3ca31af 81fb92f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/04/12 22:25 android16-6.12 af8565f8af51 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/03/08 18:39 android16-6.12 f8e2ea1b4bbd 5cb44a80 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/03/04 06:36 android16-6.12 c146faa1afa9 4180d919 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/03/01 22:13 android16-6.12 a57a57875c30 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/02/22 17:40 android16-6.12 c190014704c7 6e7b5511 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/02/20 17:36 android16-6.12 879c70c90804 17d780d6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/02/09 17:48 android16-6.12 3b54985e1263 df949cd9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/02/07 07:08 android16-6.12 6aeca23b5dee f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/02/06 20:52 android16-6.12 356523087425 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2026/02/05 11:49 android16-6.12 c895831740a4 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/11/04 10:26 android16-6.12 0d6730ee6542 686bf657 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/10/29 15:24 android16-6.12 0d6730ee6542 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/10/29 15:24 android16-6.12 0d6730ee6542 fd2207e7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/10/09 18:44 android16-6.12 bb493f3fc3fe 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/10/01 02:35 android16-6.12 6c382330c9d9 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/09/30 21:39 android16-6.12 6c382330c9d9 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/09/16 11:53 android16-6.12 ef71e857711e e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/09/14 16:15 android16-6.12 0668e45a4339 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/09/05 09:55 android16-6.12 c5058bfb5bf2 d291dd2d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/09/03 00:40 android16-6.12 4ae522d0f966 96a211bc .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/09/02 06:58 android16-6.12 2e5a4bace74a 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/26 23:54 android16-6.12 bb9513914902 e12e5ba4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/26 14:54 android16-6.12 bb9513914902 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/25 08:17 android16-6.12 c9198633ac9e bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/19 05:37 android16-6.12 0d89690c20b1 523f460e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/16 07:32 android16-6.12 3f3a5c5e782d 1804e95e .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/13 23:49 android16-6.12 affdb774d7ec 22ec1469 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/08 18:29 android16-6.12 e76cff4952af 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/07 09:06 android16-6.12 886d2f37b799 9a42d6b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/04 01:31 android16-6.12 bf0fb8bb181b 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/03 19:37 android16-6.12 bf0fb8bb181b 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/08/02 20:03 android16-6.12 bf0fb8bb181b 7368264b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/07/24 18:50 android16-6.12 379b99745e88 65d60d73 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
2025/06/30 23:57 android16-6.12 668635cd345a 6e83b42d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust general protection fault in step_into
* Struck through repros no longer work on HEAD.