last executing test programs:

138.021537ms ago: executing program 3 (id=83):
syz_open_dev$ublk_bdev(&(0x7f0000000040), 0x0, 0x0)
syz_open_dev$ublk_bdev(&(0x7f0000000080), 0x0, 0x1)
syz_open_dev$ublk_bdev(&(0x7f00000000c0), 0x0, 0x2)
syz_open_dev$ublk_bdev(&(0x7f0000000100), 0x0, 0x800)
syz_open_dev$ublk_bdev(&(0x7f0000000140), 0x1, 0x0)
syz_open_dev$ublk_bdev(&(0x7f0000000180), 0x1, 0x1)
syz_open_dev$ublk_bdev(&(0x7f00000001c0), 0x1, 0x2)
syz_open_dev$ublk_bdev(&(0x7f0000000200), 0x1, 0x800)
syz_open_dev$ublk_bdev(&(0x7f0000000240), 0x2, 0x0)
syz_open_dev$ublk_bdev(&(0x7f0000000280), 0x2, 0x1)
syz_open_dev$ublk_bdev(&(0x7f00000002c0), 0x2, 0x2)
syz_open_dev$ublk_bdev(&(0x7f0000000300), 0x2, 0x800)
syz_open_dev$ublk_bdev(&(0x7f0000000340), 0x3, 0x0)
syz_open_dev$ublk_bdev(&(0x7f0000000380), 0x3, 0x1)
syz_open_dev$ublk_bdev(&(0x7f00000003c0), 0x3, 0x2)
syz_open_dev$ublk_bdev(&(0x7f0000000400), 0x3, 0x800)
syz_open_dev$ublk_bdev(&(0x7f0000000440), 0x4, 0x0)
syz_open_dev$ublk_bdev(&(0x7f0000000480), 0x4, 0x1)
syz_open_dev$ublk_bdev(&(0x7f00000004c0), 0x4, 0x2)
syz_open_dev$ublk_bdev(&(0x7f0000000500), 0x4, 0x800)

111.237558ms ago: executing program 4 (id=87):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/virtual_nci', 0x2, 0x0)

110.949888ms ago: executing program 3 (id=89):
rt_tgsigqueueinfo(0x0, 0x0, 0x0, &(0x7f0000000000))

109.268578ms ago: executing program 3 (id=93):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/proc/self/make-it-fail', 0x1, 0x0)

85.634868ms ago: executing program 3 (id=96):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/nullb0', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/nullb0', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/nullb0', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/nullb0', 0x800, 0x0)

85.553228ms ago: executing program 0 (id=97):
socket$qrtr(0x2a, 0x2, 0x0)

85.492868ms ago: executing program 2 (id=98):
socket$kcm(0x29, 0x2, 0x0)

85.413648ms ago: executing program 0 (id=99):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/mISDNtimer', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/mISDNtimer', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/mISDNtimer', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/mISDNtimer', 0x800, 0x0)

85.377228ms ago: executing program 2 (id=100):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/snd/timer', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/snd/timer', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/snd/timer', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/snd/timer', 0x800, 0x0)

54.717519ms ago: executing program 2 (id=103):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/ndctl0', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/ndctl0', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/ndctl0', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/ndctl0', 0x800, 0x0)

54.592739ms ago: executing program 0 (id=104):
landlock_create_ruleset(&(0x7f0000000000), 0x0, 0x0)

54.558829ms ago: executing program 3 (id=105):
mlock(0x0, 0x0)

54.300079ms ago: executing program 4 (id=107):
userfaultfd(0x0)

54.198209ms ago: executing program 3 (id=108):
socket$can_bcm(0x1d, 0x2, 0x2)

25.69587ms ago: executing program 1 (id=109):
setregid(0x0, 0x0)

25.37947ms ago: executing program 2 (id=110):
syz_init_net_socket$nfc_raw(0x27, 0x3, 0x0)

25.09063ms ago: executing program 0 (id=111):
pidfd_open(0x0, 0x0)

24.918939ms ago: executing program 1 (id=112):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/sys/fs/smackfs/onlycap', 0x2, 0x0)

24.850279ms ago: executing program 1 (id=113):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/md0', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/md0', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/md0', 0x800, 0x0)

24.75309ms ago: executing program 4 (id=114):
setuid(0x0)

24.15991ms ago: executing program 1 (id=115):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/nmem0', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/nmem0', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/nmem0', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/nmem0', 0x800, 0x0)

23.99285ms ago: executing program 4 (id=116):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/dlm_plock', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/dlm_plock', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/dlm_plock', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/dlm_plock', 0x800, 0x0)

23.393779ms ago: executing program 2 (id=117):
pwritev2(0xffffffffffffffff, &(0x7f0000000000), 0x0, 0x0, 0x0, 0x0)

866.571µs ago: executing program 0 (id=118):
socket(0x1, 0x1, 0x0)

745.711µs ago: executing program 1 (id=119):
getrlimit(0x0, &(0x7f0000000000))

635.411µs ago: executing program 4 (id=120):
setreuid(0x0, 0x0)

282.391µs ago: executing program 0 (id=121):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/cdrom', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/cdrom', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/cdrom', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/cdrom', 0x800, 0x0)

164.751µs ago: executing program 1 (id=122):
symlinkat(&(0x7f0000000000), 0xffffffffffffffff, &(0x7f0000000000))

128.72µs ago: executing program 4 (id=123):
msgrcv(0x0, &(0x7f0000000000), 0x0, 0x0, 0x0)

0s ago: executing program 2 (id=124):
openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/bifrost', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/bifrost', 0x1, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/bifrost', 0x2, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/bifrost', 0x800, 0x0)

0s ago: executing program 0 (id=126):
io_getevents(0x0, 0x0, 0x0, &(0x7f0000000000), 0x0)

kernel console output (not intermixed with test programs):

Warning: Permanently added '10.128.1.56' (ED25519) to the list of known hosts.
[   30.875118][ T4035] cgroup: Unknown subsys name 'net'
[   31.131878][ T4035] cgroup: Unknown subsys name 'rlimit'
Setting up swapspace version 1, size = 127995904 bytes
[   31.429157][ T4035] Adding 124996k swap on ./swap-file.  Priority:0 extents:1 across:124996k SSFS
[   32.574622][ T4163] uffd: Set unprivileged_userfaultfd sysctl knob to 1 if kernel faults must be handled without obtaining CAP_SYS_PTRACE capability
[   32.640029][ T4185] Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
[   32.641432][ T4185] Modules linked in:
[   32.642083][ T4185] CPU: 0 PID: 4185 Comm: syz.0.126 Not tainted syzkaller #0
[   32.643244][ T4185] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026
[   32.644779][ T4185] pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
[   32.646049][ T4185] pc : lookup_ioctx+0x10c/0x7c0
[   32.646854][ T4185] lr : lookup_ioctx+0xe8/0x7c0
[   32.647671][ T4185] sp : ffff80001f607b20
[   32.648350][ T4185] x29: ffff80001f607b20 x28: ffff0000c2fb51c0 x27: dfff800000000000
[   32.650010][ T4185] x26: ffff80001f607b80 x25: ffff700003ec0f70 x24: ffff0000c0d83f40
[   32.651601][ T4185] x23: dfff800000000000 x22: 00000000fffffff2 x21: 0000000000000000
[   32.653189][ T4185] x20: ffff0000c2fb51c0 x19: 0000000000000000 x18: 0000000000000000
[   32.654732][ T4185] x17: 0000000000000000 x16: ffff800008a309dc x15: 0000000000000000
[   32.656309][ T4185] x14: 0000000000000002 x13: 1ffff0000288002b x12: 0000000097863b1e
[   32.657900][ T4185] x11: ff80800008a309b8 x10: 0000000000000000 x9 : 0000ffffffffffff
[   32.659357][ T4185] x8 : 0000000000000000 x7 : ffff800008762ed0 x6 : 0000000000000000
[   32.660790][ T4185] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
[   32.662442][ T4185] x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
[   32.663917][ T4185] Call trace:
[   32.664481][ T4185]  lookup_ioctx+0x10c/0x7c0
[   32.665232][ T4185]  do_io_getevents+0x12c/0x3c8
[   32.666018][ T4185]  __arm64_sys_io_getevents+0x16c/0x250
[   32.666988][ T4185]  invoke_syscall+0x98/0x28c
[   32.667745][ T4185]  el0_svc_common+0x13c/0x258
[   32.668570][ T4185]  do_el0_svc+0x5c/0x140
[   32.669308][ T4185]  el0_svc+0x78/0x1d0
[   32.669990][ T4185]  el0t_64_sync_handler+0xcc/0xe4
[   32.670919][ T4185]  el0t_64_sync+0x1a0/0x1a4
[   32.671757][ T4185] Code: d503229f 2a1f03f6 2a1f03e0 b8400953 (2a1603e1) 
[   32.672986][ T4185] ---[ end trace 68c4653f453bb13c ]---
[   32.725051][ T4040] ODEBUG: Out of memory. ODEBUG disabled
[   32.861764][ T4185] Kernel panic - not syncing: Oops - BTI: Fatal exception
[   32.862940][ T4185] SMP: stopping secondary CPUs
[   32.863749][ T4185] Kernel Offset: disabled
[   32.864468][ T4185] CPU features: 0xa,000003c1,7d33ffd9
[   32.865402][ T4185] Memory Limit: none
[   33.045985][ T4185] Rebooting in 86400 seconds..