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: 415d, last: 1d23h

Sample crash report:
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4056 Comm: syz.4.5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : lookup_ioctx+0x10c/0x7c0 fs/aio.c:1070
lr : lookup_ioctx+0xe8/0x7c0 fs/aio.c:1070
sp : ffff800020377c40
x29: ffff800020377c40 x28: ffff0000d8d38000 x27: 0000000000000000
x26: 1fffe0001b1a7000 x25: 1ffff0000406efd6 x24: ffff0000c12bed40
x23: dfff800000000000 x22: 00000000fffffff2 x21: 0000000000000000
x20: ffff0000d8d38000 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008a34f04 x15: 0000000000000000
x14: 1ffff00002a6e02b x13: dfff800000000000 x12: 0000000082d2c423
x11: ff80800008a34ee0 x10: 0000000000000000 x9 : 0000ffffffffffff
x8 : 0000000000000000 x7 : ffff800008766bb0 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 lookup_ioctx+0x10c/0x7c0 fs/aio.c:1070
 __do_sys_io_destroy fs/aio.c:1398 [inline]
 __se_sys_io_destroy fs/aio.c:1396 [inline]
 __arm64_sys_io_destroy+0x9c/0x1d8 fs/aio.c:1396
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x28c arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x5c/0x140 arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d4 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 2ec08f662b77a2d6 ]---
----------------
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 (275):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/16 11:53 linux-5.15.y 792fbe1537d8 4c840a2f .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
2026/10/15 20:29 linux-5.15.y 792fbe1537d8 3f2522c6 .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
2026/10/15 01:41 linux-5.15.y a051a4bf909f 8fb0ae89 .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
2026/10/13 22:01 linux-5.15.y a051a4bf909f 7321cd29 .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
2026/10/13 07:49 linux-5.15.y a051a4bf909f 5a1eeac4 .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
2026/10/09 18:25 linux-5.15.y a051a4bf909f 4f92358f .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
2026/10/08 06:33 linux-5.15.y a051a4bf909f 4f6a9fcf .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
2026/10/07 10:31 linux-5.15.y a051a4bf909f 6520ecdb .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
2026/10/06 00:24 linux-5.15.y a051a4bf909f f7710056 .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
2026/10/03 10:57 linux-5.15.y a051a4bf909f 57bbd979 .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
2026/10/02 18:34 linux-5.15.y 0248c33e835e 57bbd979 .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
2026/10/02 02:11 linux-5.15.y 0248c33e835e 6d32eb1f .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
2026/10/01 12:42 linux-5.15.y 0248c33e835e f5cdae2f .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
2026/09/30 19:07 linux-5.15.y 0248c33e835e 38f7f0d1 .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
2026/09/30 06:42 linux-5.15.y 0248c33e835e 7808aef4 .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
2026/09/29 17:35 linux-5.15.y 0248c33e835e 328436b3 .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
2026/09/29 00:56 linux-5.15.y 0248c33e835e 7bf4ea23 .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
2026/09/26 03:20 linux-5.15.y 0248c33e835e a3c7249d .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
2026/09/25 02:49 linux-5.15.y 0248c33e835e f281d9d2 .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
2026/09/24 14:58 linux-5.15.y 0248c33e835e 3c3cdf19 .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
2026/09/24 03:06 linux-5.15.y 0248c33e835e 0281b448 .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
2026/09/23 11:27 linux-5.15.y 0248c33e835e abce1216 .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
2026/09/22 05:08 linux-5.15.y 0248c33e835e e12281bd .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
2026/09/18 07:52 linux-5.15.y 0248c33e835e 853b104b .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
2026/09/17 17:14 linux-5.15.y 0248c33e835e 8d7d05f1 .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
2026/09/15 14:50 linux-5.15.y 0248c33e835e 2daa4bb5 .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
2026/09/14 14:40 linux-5.15.y 0248c33e835e 81a27d1a .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
2026/09/12 01:44 linux-5.15.y 0996e0926f6b 70a60e12 .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
2026/09/09 18:18 linux-5.15.y 0996e0926f6b 4e8b1cc6 .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
2026/09/09 04:44 linux-5.15.y 0996e0926f6b 8387c273 .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
2026/09/08 15:52 linux-5.15.y 0996e0926f6b 243b72f1 .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
2026/09/04 10:11 linux-5.15.y 0996e0926f6b f65209a4 .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
2026/09/03 21:30 linux-5.15.y 0996e0926f6b 801f0966 .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
2026/09/03 04:40 linux-5.15.y 0996e0926f6b 6a988719 .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
2026/09/02 15:40 linux-5.15.y 0996e0926f6b 85995287 .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
2026/09/02 13:19 linux-5.15.y 28c35638ec51 85995287 .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
2026/09/01 11:06 linux-5.15.y 28c35638ec51 587f6b29 .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
2026/08/31 16:47 linux-5.15.y 28c35638ec51 316d9396 .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
2026/08/28 21:43 linux-5.15.y 28c35638ec51 2f52988a .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
2026/08/28 07:53 linux-5.15.y 28c35638ec51 69a01293 .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
2026/08/27 12:57 linux-5.15.y 4a1eaf96ee5c 69a01293 .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
2026/08/27 11:17 linux-5.15.y 945fa863f02c 69a01293 .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
2026/08/26 14:29 linux-5.15.y 945fa863f02c a2b77b9e .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
2026/08/26 02:34 linux-5.15.y 945fa863f02c 6a91adb4 .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
2026/08/25 12:22 linux-5.15.y 945fa863f02c a9a1fc32 .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
2026/08/25 00:02 linux-5.15.y 945fa863f02c 614e416a .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.