10-Oct-2026 09:57:53: building syzkaller on ca620dd8f97f5b3a9134b687b5584203019518fb...
10-Oct-2026 10:03:04: fetching kernel...
10-Oct-2026 10:03:08: checked out kernel commit a051a4bf909f76f470ccb3761ee0cf6e2395616e ("Linux 5.15.222", 2026-10-03 12:26:49 +0200 +0200)
10-Oct-2026 10:03:08: cleaning kernel...
10-Oct-2026 10:03:09: building kernel...
10-Oct-2026 10:10:15: kernel built successfully with compiler Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
10-Oct-2026 10:10:15: testing patch...
10-Oct-2026 10:16:27: 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 : ffff80001f847c80
x29: ffff80001f847d20 x28: 0000000000400100 x27: 00000000fffffff2
x26: 0000000000000c7f x25: 0000000000000000 x24: 0000ffffe5110381
x23: ffff0000c2f86000 x22: 0000ffffe5111000 x21: dfff800000000000
x20: 00000000fffffc7f x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff80000897dfb4 x15: 0000000000000000
x14: 1ffff0000287802b x13: dfff800000000000 x12: 0000000082d2c423
x11: ff8080000897df90 x10: 0000ffffffffffff x9 : 0000ffffe5111000
x8 : 0000ffffe5111000 x7 : ffff800008766a24 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+0x78/0x1d4 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 2a1903fb 2a1903e0 38400933 (2a1b03e1) 
---[ end trace 1868ba92409ae028 ]---
----------------
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 '10.128.1.83' (ED25519) to the list of known hosts.
1970/01/01 00:00:30 ignoring optional flag "type"="gce"
1970/01/01 00:00:30 parsed 1 programs
[   30.242847][ T4056] cgroup: Unknown subsys name 'net'
[   30.293507][ T4056] Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
[   30.294966][ T4056] Modules linked in:
[   30.295636][ T4056] CPU: 0 PID: 4056 Comm: syz-executor Not tainted syzkaller #0
[   30.297011][ T4056] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
[   30.298691][ T4056] pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
[   30.299936][ T4056] pc : __arm64_sys_mount+0x2f0/0x5f8
[   30.300776][ T4056] lr : __arm64_sys_mount+0x2cc/0x5f8
[   30.301573][ T4056] sp : ffff80001f847c80
[   30.302273][ T4056] x29: ffff80001f847d20 x28: 0000000000400100 x27: 00000000fffffff2
[   30.303779][ T4056] x26: 0000000000000c7f x25: 0000000000000000 x24: 0000ffffe5110381
[   30.305263][ T4056] x23: ffff0000c2f86000 x22: 0000ffffe5111000 x21: dfff800000000000
[   30.306747][ T4056] x20: 00000000fffffc7f x19: 0000000000000000 x18: 0000000000000000
[   30.308195][ T4056] x17: 0000000000000000 x16: ffff80000897dfb4 x15: 0000000000000000
[   30.309711][ T4056] x14: 1ffff0000287802b x13: dfff800000000000 x12: 0000000082d2c423
[   30.311191][ T4056] x11: ff8080000897df90 x10: 0000ffffffffffff x9 : 0000ffffe5111000
[   30.312726][ T4056] x8 : 0000ffffe5111000 x7 : ffff800008766a24 x6 : 0000000000000000
[   30.314252][ T4056] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
[   30.315731][ T4056] x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
[   30.317155][ T4056] Call trace:
[   30.317729][ T4056]  __arm64_sys_mount+0x2f0/0x5f8
[   30.318635][ T4056]  invoke_syscall+0x98/0x28c
[   30.319460][ T4056]  el0_svc_common+0x13c/0x258
[   30.320312][ T4056]  do_el0_svc+0x5c/0x140
[   30.321117][ T4056]  el0_svc+0x78/0x1d4
[   30.321814][ T4056]  el0t_64_sync_handler+0xcc/0xe4
[   30.322722][ T4056]  el0t_64_sync+0x1a0/0x1a4
[   30.323557][ T4056] Code: d503229f 2a1903fb 2a1903e0 38400933 (2a1b03e1) 
[   30.324806][ T4056] ---[ end trace 1868ba92409ae028 ]---
[   30.560240][ T4056] Kernel panic - not syncing: Oops - BTI: Fatal exception
[   30.561467][ T4056] SMP: stopping secondary CPUs
[   30.562315][ T4056] Kernel Offset: disabled
[   30.563063][ T4056] CPU features: 0xa,000003c1,7d33ffd9
[   30.564043][ T4056] Memory Limit: none
[   30.763033][ T4056] Rebooting in 86400 seconds..