last executing test programs:

15.376559ms ago: executing program 1 (id=2):
recvmsg(0xffffffffffffffff, &(0x7f0000000000), 0x0)

5.175489ms ago: executing program 0 (id=1):
rt_sigqueueinfo(0x0, 0x0, &(0x7f0000000000))

4.64968ms ago: executing program 2 (id=3):
socket$isdn(0x22, 0x3, 0x0)

4.16911ms ago: executing program 3 (id=4):
setreuid(0x0, 0x0)

0s ago: executing program 4 (id=5):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/userfaultfd', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/userfaultfd', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/userfaultfd', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/userfaultfd', 0x800, 0x0)

0s ago: executing program 4 (id=8):
io_pgetevents(0x0, 0x0, 0x0, &(0x7f0000000000), 0x0, 0x0)

kernel console output (not intermixed with test programs):

Warning: Permanently added '10.128.0.147' (ED25519) to the list of known hosts.
[   30.280334][ T4031] cgroup: Unknown subsys name 'net'
[   30.535708][ T4031] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[   30.817980][ T4031] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k SSFS
[   31.548878][ T4054] Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
[   31.550188][ T4054] Modules linked in:
[   31.550850][ T4054] CPU: 0 PID: 4054 Comm: syz.4.8 Not tainted 5.15.189-syzkaller #0
[   31.552120][ T4054] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
[   31.553832][ T4054] pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
[   31.555129][ T4054] pc : lookup_ioctx+0x108/0x7d0
[   31.555933][ T4054] lr : lookup_ioctx+0xe4/0x7d0
[   31.556757][ T4054] sp : ffff80001f177ac0
[   31.557439][ T4054] x29: ffff80001f177ac0 x28: dfff800000000000 x27: dfff800000000000
[   31.558775][ T4054] x26: ffff80001f177b20 x25: ffff700003e2ef64 x24: ffff0000d9a0ed40
[   31.560150][ T4054] x23: dfff800000000000 x22: 00000000fffffff2 x21: 0000000000000000
[   31.560858][ T4052] base_sock_release(0000000041824732) sk=00000000b8f841ba
[   31.561602][ T4054] x20: ffff0000c1bed1c0 x19: 0000000000000000 x18: 0000000000000000
[   31.564221][ T4054] x17: 0000000000000000 x16: ffff800008a19714 x15: 0000000000000000
[   31.565608][ T4054] x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
[   31.567010][ T4054] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000ffffffffffff
SYZFAIL: failed to recv rpc
[   31.568430][ T4054] x8 : 0000000000000000 x7 : ffff800008750ed4 x6 : 0000000000000000
fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor)
[   31.569773][ T4054] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
[   31.571157][ T4054] x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
[   31.572534][ T4054] Call trace:
[   31.573155][ T4054]  lookup_ioctx+0x108/0x7d0
[   31.573887][ T4054]  do_io_getevents+0x120/0x394
[   31.574717][ T4054]  __arm64_sys_io_pgetevents+0x2ec/0x4f8
[   31.575668][ T4054]  invoke_syscall+0x98/0x2b8
[   31.576460][ T4054]  el0_svc_common+0x138/0x258
[   31.577267][ T4054]  do_el0_svc+0x58/0x14c
[   31.577989][ T4054]  el0_svc+0x78/0x1e0
[   31.578655][ T4054]  el0t_64_sync_handler+0xcc/0xe4
[   31.579486][ T4054]  el0t_64_sync+0x1a0/0x1a4
[   31.580236][ T4054] Code: d503229f 2a1f03f6 2a1f03e0 b8400953 (2a1603e1) 
[   31.581412][ T4054] ---[ end trace 18ff53688788dc19 ]---
[   31.776878][ T4054] Kernel panic - not syncing: Oops - BTI: Fatal exception
[   31.777916][ T4054] SMP: stopping secondary CPUs
[   31.778736][ T4054] Kernel Offset: disabled
[   31.779417][ T4054] CPU features: 0x8,000003c1,7d33ffd9
[   31.780274][ T4054] Memory Limit: none
[   31.960807][ T4054] Rebooting in 86400 seconds..