Warning: Permanently added '10.128.0.93' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 67.776817][ T6838] IPVS: ftp: loaded support on port[0] = 21 [ 67.825756][ T6859] FAULT_INJECTION: forcing a failure. [ 67.825756][ T6859] name failslab, interval 1, probability 0, space 0, times 1 [ 67.838817][ T6859] CPU: 0 PID: 6859 Comm: syz-executor054 Not tainted 5.9.0-rc1-syzkaller #0 [ 67.847477][ T6859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.857507][ T6859] Call Trace: [ 67.860806][ T6859] dump_stack+0x18f/0x20d [ 67.865115][ T6859] should_fail.cold+0x5/0x14 [ 67.869689][ T6859] ? bpf_prog_array_alloc+0x4f/0x60 [ 67.874876][ T6859] should_failslab+0x5/0xf [ 67.879308][ T6859] slab_pre_alloc_hook.constprop.0+0xf4/0x1f0 [ 67.885403][ T6859] __kmalloc+0x6f/0x320 [ 67.889538][ T6859] ? __mutex_lock+0x626/0x10e0 [ 67.894281][ T6859] bpf_prog_array_alloc+0x4f/0x60 [ 67.899310][ T6859] compute_effective_progs+0x1f3/0x5b0 [ 67.904761][ T6859] update_effective_progs+0x4e/0x360 [ 67.910074][ T6859] __cgroup_bpf_detach+0x197/0x600 [ 67.915169][ T6859] bpf_cgroup_link_release.part.0+0x80/0x380 [ 67.921154][ T6859] ? bpf_cgroup_link_release+0x50/0x50 [ 67.926590][ T6859] bpf_cgroup_link_detach+0x38/0x50 [ 67.931768][ T6859] __do_sys_bpf+0x667/0x4c20 [ 67.936346][ T6859] ? bpf_link_get_from_fd+0x110/0x110 [ 67.941709][ T6859] ? get_pid_task+0x138/0x200 [ 67.946369][ T6859] ? proc_fail_nth_write+0x95/0x220 [ 67.951544][ T6859] ? proc_task_getattr+0x1e0/0x1e0 [ 67.956634][ T6859] ? lock_is_held_type+0xbb/0xf0 [ 67.961554][ T6859] ? __sb_end_write+0xf8/0x1d0 [ 67.966304][ T6859] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 67.972261][ T6859] ? trace_hardirqs_on+0x5f/0x220 [ 67.977272][ T6859] ? lockdep_hardirqs_on+0x76/0xf0 [ 67.982398][ T6859] do_syscall_64+0x2d/0x70 [ 67.986794][ T6859] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.992661][ T6859] RIP: 0033:0x442229 [ 67.996534][ T6859] Code: e8 1c b4 02 00 48 83 c4 18 c3 0f 1f 80 00 00 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 0f 83 6b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 68.016138][ T6859] RSP: 002b:00007ffeea8531e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 68.024526][ T6859] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442229 [ 68.032493][ T6859] RDX: 0000000000000008 RSI: 0000000020000040 RDI: 0000000000000022 [ 68.040441][ T6859] RBP: ffffffffffffffff R08: 0000000000000001 R09: 0000000000000000 [ 68.048389][ T6859] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009 [ 68.056354][ T6859] R13: 00007ffeea853240 R14: 0000000000000000 R15: 0000000000000000 [ 68.075663][ T6859] ------------[ cut here ]------------ [ 68.081357][ T6859] WARNING: CPU: 0 PID: 6859 at kernel/bpf/cgroup.c:833 bpf_cgroup_link_release.part.0+0x28b/0x380 [ 68.092739][ T6859] Kernel panic - not syncing: panic_on_warn set ... [ 68.099314][ T6859] CPU: 0 PID: 6859 Comm: syz-executor054 Not tainted 5.9.0-rc1-syzkaller #0 [ 68.107963][ T6859] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.117996][ T6859] Call Trace: [ 68.121286][ T6859] dump_stack+0x18f/0x20d [ 68.125607][ T6859] panic+0x2e3/0x75c [ 68.129480][ T6859] ? __warn_printk+0xf3/0xf3 [ 68.134049][ T6859] ? printk+0xba/0xed [ 68.138033][ T6859] ? log_store.cold+0x16/0x16 [ 68.142706][ T6859] ? __warn.cold+0x5/0x4a [ 68.147040][ T6859] ? __warn+0xd6/0x1f2 [ 68.151106][ T6859] ? bpf_cgroup_link_release.part.0+0x28b/0x380 [ 68.157334][ T6859] __warn.cold+0x20/0x4a [ 68.161573][ T6859] ? bpf_cgroup_link_release.part.0+0x28b/0x380 [ 68.167825][ T6859] report_bug+0x1bd/0x210 [ 68.172152][ T6859] handle_bug+0x38/0x90 [ 68.176286][ T6859] exc_invalid_op+0x14/0x40 [ 68.180836][ T6859] asm_exc_invalid_op+0x12/0x20 [ 68.185707][ T6859] RIP: 0010:bpf_cgroup_link_release.part.0+0x28b/0x380 [ 68.192532][ T6859] Code: 01 e8 ce e0 cd ff e9 f1 fe ff ff e8 3f 60 e7 ff 48 c7 c7 00 d4 bf 89 e8 83 ad 68 06 5b 5d 41 5c e9 2a 60 e7 ff e8 25 60 e7 ff <0f> 0b e9 01 fe ff ff e8 19 60 e7 ff e8 e4 2a d4 ff 31 ff 89 c3 89 [ 68.212136][ T6859] RSP: 0018:ffffc90005367d38 EFLAGS: 00010293 [ 68.218193][ T6859] RAX: 0000000000000000 RBX: ffff888094525700 RCX: ffffffff818cdceb [ 68.226145][ T6859] RDX: ffff8880978ec240 RSI: ffffffff818cdeeb RDI: 0000000000000005 [ 68.234103][ T6859] RBP: 00000000fffffff4 R08: 0000000000000001 R09: ffffffff89c97453 [ 68.242078][ T6859] R10: 0000000000000000 R11: 0000000035383654 R12: ffff888094525768 [ 68.250027][ T6859] R13: ffffffffffffffa1 R14: 0000000000000022 R15: 0000000000000008 [ 68.258012][ T6859] ? bpf_cgroup_link_release.part.0+0x8b/0x380 [ 68.264145][ T6859] ? bpf_cgroup_link_release.part.0+0x28b/0x380 [ 68.270372][ T6859] ? bpf_cgroup_link_release.part.0+0x28b/0x380 [ 68.276602][ T6859] ? bpf_cgroup_link_release+0x50/0x50 [ 68.282051][ T6859] bpf_cgroup_link_detach+0x38/0x50 [ 68.287241][ T6859] __do_sys_bpf+0x667/0x4c20 [ 68.291816][ T6859] ? bpf_link_get_from_fd+0x110/0x110 [ 68.297164][ T6859] ? get_pid_task+0x138/0x200 [ 68.301822][ T6859] ? proc_fail_nth_write+0x95/0x220 [ 68.307036][ T6859] ? proc_task_getattr+0x1e0/0x1e0 [ 68.312127][ T6859] ? lock_is_held_type+0xbb/0xf0 [ 68.317046][ T6859] ? __sb_end_write+0xf8/0x1d0 [ 68.321794][ T6859] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 68.327776][ T6859] ? trace_hardirqs_on+0x5f/0x220 [ 68.332795][ T6859] ? lockdep_hardirqs_on+0x76/0xf0 [ 68.337888][ T6859] do_syscall_64+0x2d/0x70 [ 68.342285][ T6859] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.348173][ T6859] RIP: 0033:0x442229 [ 68.352067][ T6859] Code: e8 1c b4 02 00 48 83 c4 18 c3 0f 1f 80 00 00 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 0f 83 6b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 68.371660][ T6859] RSP: 002b:00007ffeea8531e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 68.380060][ T6859] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000442229 [ 68.388024][ T6859] RDX: 0000000000000008 RSI: 0000000020000040 RDI: 0000000000000022 [ 68.395978][ T6859] RBP: ffffffffffffffff R08: 0000000000000001 R09: 0000000000000000 [ 68.403936][ T6859] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009 [ 68.411885][ T6859] R13: 00007ffeea853240 R14: 0000000000000000 R15: 0000000000000000 [ 68.421028][ T6859] Kernel Offset: disabled [ 68.425397][ T6859] Rebooting in 86400 seconds..