last executing test programs: 243.199595ms ago: executing program 3 (id=4): openat(0xffffffffffffff9c, &(0x7f0000000040)='/proc/thread-self/attr/current', 0x2, 0x0) 191.164473ms ago: executing program 0 (id=6): cachestat(0xffffffffffffffff, &(0x7f0000000000), &(0x7f0000000000), 0x0) 190.991493ms ago: executing program 0 (id=7): select(0x0, &(0x7f0000000000), &(0x7f0000000000), &(0x7f0000000000), &(0x7f0000000000)) 190.855285ms ago: executing program 3 (id=8): open_tree(0xffffffffffffffff, &(0x7f0000000000), 0x0) 184.206696ms ago: executing program 2 (id=3): getsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), &(0x7f0000000000)) 176.683544ms ago: executing program 0 (id=9): prctl$0(0x0, 0x0, 0x0, 0x0, 0x0) 127.044542ms ago: executing program 3 (id=10): futex(&(0x7f0000000000), 0x0, 0x0, &(0x7f0000000000), &(0x7f0000000000), 0x0) 126.863698ms ago: executing program 2 (id=11): openat(0xffffffffffffff9c, &(0x7f0000000040)='/sys/devices/platform/vhci_hcd.0/attach', 0x1, 0x0) 126.795544ms ago: executing program 0 (id=12): keyctl$KEYCTL_CAPABILITIES(0x1f, &(0x7f0000000000), 0x0) 126.717333ms ago: executing program 1 (id=2): ioctl(0xffffffffffffffff, 0x0, &(0x7f0000000000)) 106.258903ms ago: executing program 2 (id=13): ptrace(0x0, 0x0) 106.146629ms ago: executing program 3 (id=14): clone(0x0, &(0x7f0000000000), &(0x7f0000000000), &(0x7f0000000000), &(0x7f0000000000)) exit(0x0) 99.879727ms ago: executing program 0 (id=15): socket$isdn(0x22, 0x3, 0x0) 23.095705ms ago: executing program 1 (id=16): syz_init_net_socket$bt_rfcomm(0x1f, 0x1, 0x3) 22.945323ms ago: executing program 2 (id=17): close(0xffffffffffffffff) 22.874268ms ago: executing program 3 (id=18): landlock_add_rule$LANDLOCK_RULE_NET_PORT(0xffffffffffffffff, 0x2, &(0x7f0000000000), 0x0) 22.766527ms ago: executing program 0 (id=19): openat(0xffffffffffffff9c, &(0x7f0000000040)='/proc/thread-self/attr/exec', 0x2, 0x0) 9.777974ms ago: executing program 2 (id=20): io_pgetevents(0x0, 0x0, 0x0, &(0x7f0000000000), 0x0, 0x0) 0s ago: executing program 3 (id=21): openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/cuse', 0x2, 0x0) kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.1.77' (ED25519) to the list of known hosts. [ 70.498171][ T5825] cgroup: Unknown subsys name 'net' [ 70.668718][ T5825] cgroup: Unknown subsys name 'cpuset' [ 70.677661][ T5825] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 71.448591][ T1316] ieee802154 phy0 wpan0: encryption failed: -22 [ 71.455947][ T1316] ieee802154 phy1 wpan1: encryption failed: -22 [ 72.032724][ T5825] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 75.175068][ T5867] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000046: 0000 [#1] SMP KASAN PTI [ 75.187043][ T5867] KASAN: null-ptr-deref in range [0x0000000000000230-0x0000000000000237] [ 75.195482][ T5867] CPU: 1 UID: 0 PID: 5867 Comm: syz.3.21 Not tainted syzkaller #0 PREEMPT(full) [ 75.204860][ T5867] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 [ 75.215021][ T5867] RIP: 0010:fuse_dev_alloc_install+0x39/0x80 [ 75.221238][ T5867] Code: e8 bc f8 ff ff 48 89 c3 48 85 c0 74 47 e8 8f 2a 7f fe 49 8d be 30 02 00 00 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 3c 75 e9 fe 49 8b 96 30 02 00 00 49 c7 86 30 [ 75.241212][ T5867] RSP: 0018:ffffc900041d7710 EFLAGS: 00010202 [ 75.247377][ T5867] RAX: 0000000000000046 RBX: ffff888036698300 RCX: dffffc0000000000 [ 75.255435][ T5867] RDX: 0000000000000000 RSI: ffffffff8e31e6cb RDI: 0000000000000230 [ 75.263422][ T5867] RBP: ffff88802839d790 R08: ffffffff907547f7 R09: 1ffffffff20ea8fe [ 75.271397][ T5867] R10: dffffc0000000000 R11: fffffbfff20ea8ff R12: ffff88807bd1e040 [ 75.279573][ T5867] R13: ffff88807bd1e010 R14: 0000000000000000 R15: ffff88807bd1e000 [ 75.288641][ T5867] FS: 0000555557df7500(0000) GS:ffff888124ec9000(0000) knlGS:0000000000000000 [ 75.297921][ T5867] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.304629][ T5867] CR2: 00007f35c6f48060 CR3: 000000002bb7a000 CR4: 00000000003526f0 [ 75.313075][ T5867] Call Trace: [ 75.316401][ T5867] [ 75.319416][ T5867] cuse_channel_open+0x107/0x7c0 [ 75.324449][ T5867] ? __pfx_cuse_channel_open+0x10/0x10 [ 75.330027][ T5867] misc_open+0x2d5/0x350 [ 75.334266][ T5867] chrdev_open+0x4cd/0x5e0 [ 75.338687][ T5867] ? __pfx_chrdev_open+0x10/0x10 [ 75.343612][ T5867] ? fsnotify_open_perm_and_set_mode+0x135/0x6d0 [ 75.349924][ T5867] ? __pfx_chrdev_open+0x10/0x10 [ 75.354864][ T5867] do_dentry_open+0x785/0x14e0 [ 75.359787][ T5867] vfs_open+0x3b/0x340 [ 75.364060][ T5867] ? path_openat+0x2df0/0x3860 [ 75.368832][ T5867] path_openat+0x2e08/0x3860 [ 75.373521][ T5867] ? __pfx_stack_trace_save+0x10/0x10 [ 75.378905][ T5867] ? stack_depot_save_flags+0x33/0x810 [ 75.384357][ T5867] ? __pfx_path_openat+0x10/0x10 [ 75.389370][ T5867] ? __x64_sys_openat+0x138/0x170 [ 75.394383][ T5867] ? __lock_acquire+0x6b5/0x2cf0 [ 75.399312][ T5867] do_file_open+0x23e/0x4a0 [ 75.403904][ T5867] ? __pfx_do_file_open+0x10/0x10 [ 75.408941][ T5867] ? _raw_spin_unlock+0x28/0x50 [ 75.414228][ T5867] ? alloc_fd+0x64b/0x6c0 [ 75.418568][ T5867] do_sys_openat2+0x113/0x200 [ 75.423243][ T5867] ? __pfx_do_sys_openat2+0x10/0x10 [ 75.428539][ T5867] ? exc_page_fault+0x6a/0xc0 [ 75.433219][ T5867] ? do_user_addr_fault+0xc6f/0x1340 [ 75.438509][ T5867] __x64_sys_openat+0x138/0x170 [ 75.443462][ T5867] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.449532][ T5867] do_syscall_64+0x15f/0xf80 [ 75.454209][ T5867] ? trace_irq_disable+0x3b/0x140 [ 75.459278][ T5867] ? clear_bhb_loop+0x40/0x90 [ 75.464136][ T5867] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 75.470389][ T5867] RIP: 0033:0x7f2e2599c819 [ 75.474815][ T5867] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 [ 75.494761][ T5867] RSP: 002b:00007fff93e66418 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 75.503170][ T5867] RAX: ffffffffffffffda RBX: 00007f2e25c15fa0 RCX: 00007f2e2599c819 [ 75.511151][ T5867] RDX: 0000000000000002 RSI: 0000200000000040 RDI: ffffffffffffff9c [ 75.519283][ T5867] RBP: 00007f2e25a32c91 R08: 0000000000000000 R09: 0000000000000000 [ 75.527337][ T5867] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 75.535478][ T5867] R13: 00007f2e25c15fac R14: 00007f2e25c15fa0 R15: 00007f2e25c15fa0 [ 75.543469][ T5867] [ 75.546474][ T5867] Modules linked in: [ 75.551234][ T5867] ---[ end trace 0000000000000000 ]--- SYZFAIL: failed to recv rpc fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor) [ 75.625674][ T5867] RIP: 0010:fuse_dev_alloc_install+0x39/0x80 [ 75.631747][ T5867] Code: e8 bc f8 ff ff 48 89 c3 48 85 c0 74 47 e8 8f 2a 7f fe 49 8d be 30 02 00 00 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 3c 75 e9 fe 49 8b 96 30 02 00 00 49 c7 86 30 [ 75.713818][ T5867] RSP: 0018:ffffc900041d7710 EFLAGS: 00010202 [ 75.725274][ T5867] RAX: 0000000000000046 RBX: ffff888036698300 RCX: dffffc0000000000 [ 75.733494][ T5867] RDX: 0000000000000000 RSI: ffffffff8e31e6cb RDI: 0000000000000230 [ 75.742964][ T5867] RBP: ffff88802839d790 R08: ffffffff907547f7 R09: 1ffffffff20ea8fe [ 75.754702][ T5867] R10: dffffc0000000000 R11: fffffbfff20ea8ff R12: ffff88807bd1e040 [ 75.762783][ T5867] R13: ffff88807bd1e010 R14: 0000000000000000 R15: ffff88807bd1e000 [ 75.770900][ T5867] FS: 0000555557df7500(0000) GS:ffff888124ec9000(0000) knlGS:0000000000000000 [ 75.780132][ T5867] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.786795][ T5867] CR2: 0000564d613a8ee8 CR3: 000000002bb7a000 CR4: 00000000003526f0 [ 75.796164][ T5867] Kernel panic - not syncing: Fatal exception [ 75.802711][ T5867] Kernel Offset: disabled [ 75.807034][ T5867] Rebooting in 86400 seconds..