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linux-5.15.y test error: Internal error in lookup_ioctx

Status: upstream: reported on 2025/08/28 15:36
Reported-by: syzbot+7bc2b1c6268d7ff840ed@syzkaller.appspotmail.com
First crash: 188d, last: 10h23m

Sample crash report:
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4090 Comm: syz.2.40 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : lookup_ioctx+0x108/0x7c8 fs/aio.c:1070
lr : lookup_ioctx+0xe4/0x7c8 fs/aio.c:1070
sp : ffff80001f467b20
x29: ffff80001f467b20 x28: ffff0000c2f80000 x27: dfff800000000000
x26: ffff80001f467b80 x25: ffff700003e8cf70 x24: ffff0000d839ed40
x23: dfff800000000000 x22: 00000000fffffff2 x21: 0000000000000000
x20: ffff0000c2f80000 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008a22da8 x15: 0000000000000000
x14: 0000000000000002 x13: 1ffff0000285202b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000ffffffffffff
x8 : 0000000000000000 x7 : ffff8000087586bc x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 lookup_ioctx+0x108/0x7c8 fs/aio.c:1070
 do_io_getevents+0x12c/0x3c8 fs/aio.c:2186
 __do_sys_io_getevents fs/aio.c:2224 [inline]
 __se_sys_io_getevents fs/aio.c:2212 [inline]
 __arm64_sys_io_getevents+0x164/0x248 fs/aio.c:2212
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: d503229f 2a1f03f6 2a1f03e0 b8400953 (2a1603e1) 
---[ end trace 5c988495793ad0f6 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03f6 	mov	w22, wzr
   8:	2a1f03e0 	mov	w0, wzr
   c:	b8400953 	ldtr	w19, [x10]
* 10:	2a1603e1 	mov	w1, w22 <-- trapping instruction

Crashes (88):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/04 12:13 linux-5.15.y 3330a8d33e08 e6b6b96b .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/03/03 14:00 linux-5.15.y 3330a8d33e08 4180d919 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/03/03 00:58 linux-5.15.y 3330a8d33e08 28b83e23 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/27 15:37 linux-5.15.y 3330a8d33e08 2cf092b8 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/27 00:05 linux-5.15.y 3330a8d33e08 a2f13f71 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/26 11:34 linux-5.15.y 3330a8d33e08 ffa54287 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/25 23:34 linux-5.15.y 3330a8d33e08 e0f78d93 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/24 23:25 linux-5.15.y 3330a8d33e08 787dfb7c .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/24 11:09 linux-5.15.y 3330a8d33e08 96b1aa46 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/23 22:57 linux-5.15.y 3330a8d33e08 41d2fa6a .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/23 10:50 linux-5.15.y 3330a8d33e08 6beca497 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/20 18:56 linux-5.15.y 3330a8d33e08 6e7b5511 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/20 06:55 linux-5.15.y 3330a8d33e08 17d780d6 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/19 19:01 linux-5.15.y 3330a8d33e08 c8d8c52d .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/19 17:00 linux-5.15.y 3330a8d33e08 746545b8 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/19 04:52 linux-5.15.y e45d5d41c134 746545b8 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/18 16:23 linux-5.15.y e45d5d41c134 77d4d919 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/18 04:28 linux-5.15.y e45d5d41c134 39751c21 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/17 03:40 linux-5.15.y e45d5d41c134 e439b951 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/16 15:40 linux-5.15.y e45d5d41c134 5d52cba5 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/13 17:59 linux-5.15.y e45d5d41c134 1e62d198 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/13 05:28 linux-5.15.y e45d5d41c134 6a673c50 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/12 17:15 linux-5.15.y e45d5d41c134 504cb1bf .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/12 00:28 linux-5.15.y e45d5d41c134 76a109e2 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/11 12:06 linux-5.15.y 7b232985052f 75707236 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/10 11:53 linux-5.15.y 7b232985052f 91d776d3 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/09 23:31 linux-5.15.y 7b232985052f 4ab09a02 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/09 11:19 linux-5.15.y 7b232985052f df949cd9 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/07 18:31 linux-5.15.y 7b232985052f 4c131dc4 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/06 12:25 linux-5.15.y 9eec9a14ee10 97745f52 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/05 22:14 linux-5.15.y 9eec9a14ee10 f03c4191 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/05 10:08 linux-5.15.y 9eec9a14ee10 4936e85c .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/04 14:30 linux-5.15.y 9eec9a14ee10 ea10c935 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/03 22:06 linux-5.15.y 9eec9a14ee10 42b01fab .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/02 21:52 linux-5.15.y 9eec9a14ee10 d78927dd .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/02 09:07 linux-5.15.y 9eec9a14ee10 018ebef2 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/02/01 01:06 linux-5.15.y 9eec9a14ee10 6b8752f2 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/31 13:04 linux-5.15.y 9eec9a14ee10 afc0c4d4 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/29 11:47 linux-5.15.y 9eec9a14ee10 aeb6fdd5 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/28 23:52 linux-5.15.y 9eec9a14ee10 0adc945e .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/28 11:33 linux-5.15.y 9eec9a14ee10 004c195c .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/27 23:20 linux-5.15.y 9eec9a14ee10 3029c699 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/26 23:11 linux-5.15.y 9eec9a14ee10 efb3e894 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/26 11:20 linux-5.15.y 9eec9a14ee10 a4c52dd6 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/25 21:34 linux-5.15.y 9eec9a14ee10 55756628 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/23 22:35 linux-5.15.y 9eec9a14ee10 4f25b9b4 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/22 17:33 linux-5.15.y 9eec9a14ee10 82c9c083 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/21 17:12 linux-5.15.y 9eec9a14ee10 8fc37797 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2026/01/21 05:30 linux-5.15.y 9eec9a14ee10 6f1aa2f9 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/10/15 17:11 linux-5.15.y 29e53a5b1c4f 19568248 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/10/13 12:17 linux-5.15.y 29e53a5b1c4f b6605ba8 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/10/07 22:14 linux-5.15.y 29e53a5b1c4f 7e2882b3 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/10/02 13:02 linux-5.15.y 29e53a5b1c4f 49379ee0 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/10/02 11:58 linux-5.15.y 29e53a5b1c4f 267f56c6 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/10/01 23:49 linux-5.15.y 43bb85222e53 267f56c6 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/10/01 10:53 linux-5.15.y 43bb85222e53 a1859138 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/09/30 15:51 linux-5.15.y 43bb85222e53 65a0eece .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/09/29 11:42 linux-5.15.y 43bb85222e53 86341da6 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/09/26 19:11 linux-5.15.y 43bb85222e53 001c9061 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/09/24 04:58 linux-5.15.y 43bb85222e53 0abd0691 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/09/23 16:56 linux-5.15.y 43bb85222e53 e667a34f .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/09/22 10:21 linux-5.15.y 43bb85222e53 0ac7291c .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/09/11 19:47 linux-5.15.y 43bb85222e53 e2beed91 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/09/11 15:58 linux-5.15.y 43bb85222e53 fdeaa69b .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/09/09 17:29 linux-5.15.y de9476bb4f1b d291dd2d .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/08/29 23:21 linux-5.15.y 01879f56bdde 807a3b61 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/08/29 10:07 linux-5.15.y 01879f56bdde 3e1beec6 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
2025/08/28 15:36 linux-5.15.y 01879f56bdde e12e5ba4 .config console log report [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 linux-5.15.y test error: Internal error in lookup_ioctx
* Struck through repros no longer work on HEAD.