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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: 278d, last: 4h36m

Sample crash report:
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4129 Comm: syz.4.77 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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 : ffff80001f817ac0
x29: ffff80001f817ac0 x28: dfff800000000000 x27: dfff800000000000
x26: ffff80001f817b20 x25: ffff700003f02f64 x24: ffff0000cc099140
x23: dfff800000000000 x22: 00000000fffffff2 x21: 0000000000000000
x20: ffff0000c23e9b40 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008a23dc8 x15: 0000000000000000
x14: 0000000000000002 x13: 1ffff0000285602b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000ffffffffffff
x8 : 0000000000000000 x7 : ffff800008758d80 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_pgetevents fs/aio.c:2260 [inline]
 __se_sys_io_pgetevents fs/aio.c:2237 [inline]
 __arm64_sys_io_pgetevents+0x2f8/0x508 fs/aio.c:2237
 __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 fa5c19a0a0601461 ]---
----------------
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 (161):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/06/03 00:13 linux-5.15.y dc027a595035 3c0d2131 .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
2026/06/02 11:47 linux-5.15.y dc027a595035 62fe1528 .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
2026/06/01 21:14 linux-5.15.y dc027a595035 1095583b .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
2026/06/01 17:01 linux-5.15.y dc027a595035 8d8eeb3a .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
2026/06/01 08:56 linux-5.15.y 241d66fa280c 8d8eeb3a .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
2026/05/29 12:09 linux-5.15.y 241d66fa280c 6b4a8443 .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
2026/05/29 00:18 linux-5.15.y 241d66fa280c 4624854e .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
2026/05/28 12:00 linux-5.15.y 241d66fa280c 681715f7 .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
2026/05/27 23:42 linux-5.15.y 241d66fa280c 4c36e7e5 .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
2026/05/27 12:27 linux-5.15.y 241d66fa280c 8777bdc3 .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
2026/05/26 22:08 linux-5.15.y 241d66fa280c 2b01f00e .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
2026/05/26 08:39 linux-5.15.y 241d66fa280c a3e47276 .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
2026/05/23 12:09 linux-5.15.y 241d66fa280c c69befb3 .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
2026/05/22 13:33 linux-5.15.y 93741761e5e3 5f091fcc .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
2026/05/22 00:51 linux-5.15.y 93741761e5e3 70ae9b03 .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
2026/05/21 00:10 linux-5.15.y 93741761e5e3 41b8c833 .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
2026/05/19 10:53 linux-5.15.y 93741761e5e3 223544dc .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
2026/05/18 22:15 linux-5.15.y 93741761e5e3 9f74d399 .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
2026/05/16 09:29 linux-5.15.y 93741761e5e3 a15a64a6 .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
2026/05/15 21:02 linux-5.15.y 93741761e5e3 81fb92f3 .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
2026/05/15 14:32 linux-5.15.y 93741761e5e3 9cd3beaa .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
2026/05/13 21:53 linux-5.15.y de8dfb3f0278 6ccb967e .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
2026/05/13 09:48 linux-5.15.y de8dfb3f0278 fec2a7ee .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
2026/05/12 19:59 linux-5.15.y de8dfb3f0278 a0949470 .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
2026/05/11 07:19 linux-5.15.y de8dfb3f0278 845acb1c .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
2026/05/08 15:13 linux-5.15.y de8dfb3f0278 b2988c17 .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
2026/05/08 13:27 linux-5.15.y 7e75ef31ddc9 b2988c17 .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
2026/05/08 01:07 linux-5.15.y ef251c45f1cd 5633175a .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
2026/05/05 09:58 linux-5.15.y ef251c45f1cd 06e69a27 .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
2026/05/04 20:29 linux-5.15.y ef251c45f1cd a898ba9c .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
2026/05/04 08:06 linux-5.15.y ef251c45f1cd 85f1bcf2 .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
2026/05/02 07:54 linux-5.15.y ef251c45f1cd a0d91488 .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
2026/04/30 12:27 linux-5.15.y ef251c45f1cd a7464baf .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
2026/04/27 09:23 linux-5.15.y b9d57c40a767 0f700595 .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
2026/04/25 00:43 linux-5.15.y b9d57c40a767 9c2d0995 .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
2026/04/21 16:51 linux-5.15.y b9d57c40a767 0b6ab7ec .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
2026/04/21 04:27 linux-5.15.y b9d57c40a767 3f2e655b .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
2026/04/20 14:44 linux-5.15.y b9d57c40a767 e65da4ee .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
2026/04/18 07:47 linux-5.15.y 91d48252ad4b 303e2802 .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
2026/04/16 12:18 linux-5.15.y 91d48252ad4b 4743f87d .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
2026/04/15 23:33 linux-5.15.y 91d48252ad4b df15c5f3 .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
2026/04/15 12:11 linux-5.15.y 91d48252ad4b c441f497 .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.