27-Sep-2026 04:26:54: building syzkaller on 79782afcff30fd0c0af8c2725d508b2c7150f3ed...
27-Sep-2026 04:27:02: fetching kernel...
27-Sep-2026 04:27:06: checked out kernel commit 0248c33e835ecbec3a591f93fdaae53f7b90a4d6 ("Linux 5.15.221", 2026-09-14 13:20:54 +0200 +0200)
27-Sep-2026 04:27:06: cleaning kernel...
27-Sep-2026 04:27:07: building kernel...
27-Sep-2026 04:33:54: kernel built successfully with compiler Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
27-Sep-2026 04:33:54: testing patch...
27-Sep-2026 04:41:54: aggregating test results failed: Internal error in sys_mount

cgroup: Unknown subsys name 'net'
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4056 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : copy_mount_options fs/namespace.c:3255 [inline]
pc : __do_sys_mount fs/namespace.c:3580 [inline]
pc : __se_sys_mount fs/namespace.c:3562 [inline]
pc : __arm64_sys_mount+0x2f0/0x5f8 fs/namespace.c:3562
lr : copy_mount_options fs/namespace.c:3255 [inline]
lr : __do_sys_mount fs/namespace.c:3580 [inline]
lr : __se_sys_mount fs/namespace.c:3562 [inline]
lr : __arm64_sys_mount+0x2cc/0x5f8 fs/namespace.c:3562
sp : ffff80001f677c80
x29: ffff80001f677d20 x28: 0000000000400100 x27: 00000000fffffff2
x26: 0000000000000f1f x25: 0000000000000000 x24: 0000ffffe936a0e1
x23: ffff0000c2b7a000 x22: 0000ffffe936b000 x21: dfff800000000000
x20: 00000000ffffff1f x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80000897ba24 x15: 0000000000000000
x14: 0000000000000000 x13: 1ffff0000287602b x12: 0000000097863b1e
x11: ff8080000897ba00 x10: 0000ffffffffffff x9 : 0000ffffe936b000
x8 : 0000ffffe936b000 x7 : ffff800008764494 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 copy_mount_options fs/namespace.c:3255 [inline]
 __do_sys_mount fs/namespace.c:3580 [inline]
 __se_sys_mount fs/namespace.c:3562 [inline]
 __arm64_sys_mount+0x2f0/0x5f8 fs/namespace.c:3562
 __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+0x78/0x1d0 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 2a1903fb 2a1903e0 38400933 (2a1b03e1) 
---[ end trace b0daf1e043b592fd ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1903fb 	mov	w27, w25
   8:	2a1903e0 	mov	w0, w25
   c:	38400933 	ldtrb	w19, [x9]
* 10:	2a1b03e1 	mov	w1, w27 <-- trapping instruction


Warning: Permanently added '10.128.1.156' (ED25519) to the list of known hosts.
1970/01/01 00:00:28 ignoring optional flag "type"="gce"
1970/01/01 00:00:29 parsed 1 programs
[   29.090398][ T4056] cgroup: Unknown subsys name 'net'
[   29.127565][ T4056] Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
[   29.128875][ T4056] Modules linked in:
[   29.129480][ T4056] CPU: 0 PID: 4056 Comm: syz-executor Not tainted syzkaller #0
[   29.130633][ T4056] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
[   29.132160][ T4056] pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
[   29.133493][ T4056] pc : __arm64_sys_mount+0x2f0/0x5f8
[   29.134386][ T4056] lr : __arm64_sys_mount+0x2cc/0x5f8
[   29.135209][ T4056] sp : ffff80001f677c80
[   29.135892][ T4056] x29: ffff80001f677d20 x28: 0000000000400100 x27: 00000000fffffff2
[   29.137375][ T4056] x26: 0000000000000f1f x25: 0000000000000000 x24: 0000ffffe936a0e1
[   29.138865][ T4056] x23: ffff0000c2b7a000 x22: 0000ffffe936b000 x21: dfff800000000000
[   29.140237][ T4056] x20: 00000000ffffff1f x19: 0000000000000000 x18: 0000000000000000
[   29.141880][ T4056] x17: 0000000000000000 x16: ffff80000897ba24 x15: 0000000000000000
[   29.143271][ T4056] x14: 0000000000000000 x13: 1ffff0000287602b x12: 0000000097863b1e
[   29.144604][ T4056] x11: ff8080000897ba00 x10: 0000ffffffffffff x9 : 0000ffffe936b000
[   29.145906][ T4056] x8 : 0000ffffe936b000 x7 : ffff800008764494 x6 : 0000000000000000
[   29.147395][ T4056] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
[   29.148912][ T4056] x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
[   29.150373][ T4056] Call trace:
[   29.150981][ T4056]  __arm64_sys_mount+0x2f0/0x5f8
[   29.151823][ T4056]  invoke_syscall+0x98/0x28c
[   29.152631][ T4056]  el0_svc_common+0x13c/0x258
[   29.153423][ T4056]  do_el0_svc+0x5c/0x140
[   29.154143][ T4056]  el0_svc+0x78/0x1d0
[   29.154828][ T4056]  el0t_64_sync_handler+0xcc/0xe4
[   29.155663][ T4056]  el0t_64_sync+0x1a0/0x1a4
[   29.156424][ T4056] Code: d503229f 2a1903fb 2a1903e0 38400933 (2a1b03e1) 
[   29.157665][ T4056] ---[ end trace b0daf1e043b592fd ]---
[   29.354409][ T4056] Kernel panic - not syncing: Oops - BTI: Fatal exception
[   29.355580][ T4056] SMP: stopping secondary CPUs
[   29.356454][ T4056] Kernel Offset: disabled
[   29.357150][ T4056] CPU features: 0xa,000003c1,7d33ffd9
[   29.358017][ T4056] Memory Limit: none
[   29.553556][ T4056] Rebooting in 86400 seconds..