syzkaller login: [ 11.669390][ T23] kauditd_printk_skb: 60 callbacks suppressed [ 11.669397][ T23] audit: type=1400 audit(1649430466.150:71): avc: denied { transition } for pid=290 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 11.675198][ T23] audit: type=1400 audit(1649430466.150:72): avc: denied { write } for pid=290 comm="sh" path="pipe:[10786]" dev="pipefs" ino=10786 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 12.116844][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #88!!! [ 12.386801][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #88!!! [ 12.547492][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 14.986860][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 14.988395][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! [ 15.306872][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! Warning: Permanently added '10.128.0.140' (ECDSA) to the list of known hosts. [ 340.374350][ T23] audit: type=1400 audit(1649430794.850:73): avc: denied { execmem } for pid=365 comm="syz-executor325" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 340.377989][ T365] cgroup: Unknown subsys name 'net' [ 340.393836][ T23] audit: type=1400 audit(1649430794.860:74): avc: denied { mounton } for pid=365 comm="syz-executor325" path="/syzcgroup/unified" dev="sda1" ino=1137 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 340.421834][ T23] audit: type=1400 audit(1649430794.860:75): avc: denied { mount } for pid=365 comm="syz-executor325" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 340.422004][ T365] cgroup: Unknown subsys name 'devices' [ 340.444302][ T23] audit: type=1400 audit(1649430794.880:76): avc: denied { unmount } for pid=365 comm="syz-executor325" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 340.618341][ T365] cgroup: Unknown subsys name 'hugetlb' [ 340.623925][ T365] cgroup: Unknown subsys name 'rlimit' executing program [ 340.747911][ T23] audit: type=1400 audit(1649430795.230:77): avc: denied { mounton } for pid=365 comm="syz-executor325" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 340.774741][ T374] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation executing program executing program executing program [ 340.796701][ T23] audit: type=1400 audit(1649430795.230:78): avc: denied { mount } for pid=365 comm="syz-executor325" name="/" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=filesystem permissive=1 [ 340.821232][ T23] audit: type=1400 audit(1649430795.230:79): avc: denied { setattr } for pid=365 comm="syz-executor325" name="raw-gadget" dev="devtmpfs" ino=165 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 executing program executing program [ 340.854866][ T23] audit: type=1400 audit(1649430795.230:80): avc: denied { mounton } for pid=374 comm="syz-executor325" path="/sys/fs/fuse/connections" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1 [ 340.879003][ T23] audit: type=1400 audit(1649430795.230:81): avc: denied { mount } for pid=374 comm="syz-executor325" name="/" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 340.901765][ T23] audit: type=1400 audit(1649430795.230:82): avc: denied { mounton } for pid=374 comm="syz-executor325" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1 [ 340.924190][ T379] FAULT_INJECTION: forcing a failure. [ 340.924190][ T379] name failslab, interval 1, probability 0, space 0, times 1 [ 340.936887][ T379] CPU: 0 PID: 379 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 340.947101][ T379] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 340.957139][ T379] Call Trace: [ 340.960416][ T379] dump_stack_lvl+0x1e2/0x24b [ 340.965067][ T379] ? panic+0x7d7/0x7d7 [ 340.969114][ T379] ? bfq_pos_tree_add_move+0x43e/0x43e [ 340.974553][ T379] ? selinux_kernfs_init_security+0x1a8/0x760 [ 340.980600][ T379] dump_stack+0x15/0x17 [ 340.984737][ T379] should_fail+0x3c0/0x510 [ 340.989143][ T379] __should_failslab+0x9f/0xe0 [ 340.993901][ T379] should_failslab+0x9/0x20 [ 340.998399][ T379] kmem_cache_alloc+0x3f/0x300 [ 341.003140][ T379] ? __kernfs_new_node+0xdb/0x6e0 [ 341.008137][ T379] __kernfs_new_node+0xdb/0x6e0 [ 341.012965][ T379] ? is_module_text_address+0xe1/0x140 [ 341.018407][ T379] ? kernfs_new_node+0x170/0x170 [ 341.023323][ T379] ? ptr_to_hashval+0x60/0x60 [ 341.027981][ T379] ? arch_stack_walk+0xf8/0x140 [ 341.032813][ T379] ? snprintf+0xd6/0x120 [ 341.037035][ T379] kernfs_new_node+0x97/0x170 [ 341.041690][ T379] __kernfs_create_file+0x4a/0x270 [ 341.046783][ T379] cgroup_addrm_files+0xab8/0xfe0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 341.051805][ T379] ? ____kasan_kmalloc+0xdc/0x110 [ 341.056813][ T379] ? __kasan_kmalloc+0x9/0x10 [ 341.061489][ T379] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 341.067073][ T379] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 341.073211][ T379] ? delete_node+0x759/0x7b0 [ 341.077803][ T379] ? __kasan_check_read+0x11/0x20 [ 341.082818][ T379] ? delete_node+0x759/0x7b0 [ 341.087427][ T379] ? __kasan_check_write+0x14/0x20 [ 341.092520][ T379] ? idr_replace+0x1c4/0x230 [ 341.097097][ T379] ? idr_get_next+0x4b0/0x4b0 [ 341.101754][ T379] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 341.106852][ T379] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 341.112027][ T379] css_populate_dir+0x137/0x370 [ 341.116862][ T379] cgroup_apply_control_enable+0x8b9/0x12f0 [ 341.122852][ T379] cgroup_apply_control+0x93/0x710 [ 341.127944][ T379] ? css_next_child+0x160/0x160 [ 341.132776][ T379] ? stack_trace_save+0x12d/0x1f0 [ 341.137779][ T379] ? io_schedule+0x120/0x120 [ 341.142344][ T379] ? kernfs_fop_write_iter+0x15e/0x410 [ 341.147776][ T379] ? __kasan_check_write+0x14/0x20 [ 341.152863][ T379] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 341.158125][ T379] cgroup_subtree_control_write+0xd19/0x1310 [ 341.164345][ T379] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 341.170311][ T379] ? __kasan_check_write+0x14/0x20 [ 341.175401][ T379] ? _copy_from_iter+0x3fb/0xd60 [ 341.180317][ T379] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 341.186272][ T379] cgroup_file_write+0x28e/0x590 [ 341.191187][ T379] ? cgroup_seqfile_stop+0xc0/0xc0 [ 341.196274][ T379] ? mutex_lock+0xa6/0x110 [ 341.200665][ T379] ? mutex_trylock+0xb0/0xb0 [ 341.205233][ T379] ? __kasan_check_write+0x14/0x20 [ 341.210321][ T379] kernfs_fop_write_iter+0x2d0/0x410 [ 341.215583][ T379] ? cgroup_seqfile_stop+0xc0/0xc0 [ 341.220675][ T379] vfs_write+0xc1c/0xf40 [ 341.224911][ T379] ? slab_free_freelist_hook+0xcc/0x1a0 [ 341.230440][ T379] ? kernel_write+0x3c0/0x3c0 [ 341.235102][ T379] ? mutex_trylock+0xb0/0xb0 [ 341.239682][ T379] ? __fdget_pos+0x26d/0x310 [ 341.244247][ T379] ? ksys_write+0x77/0x2c0 [ 341.248638][ T379] ksys_write+0x198/0x2c0 [ 341.252948][ T379] ? __kasan_check_write+0x14/0x20 [ 341.258037][ T379] ? __ia32_sys_read+0x90/0x90 [ 341.262778][ T379] ? debug_smp_processor_id+0x17/0x20 [ 341.268127][ T379] __x64_sys_write+0x7b/0x90 [ 341.272782][ T379] do_syscall_64+0x34/0x70 [ 341.277176][ T379] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 341.283046][ T379] RIP: 0033:0x7f5223098259 [ 341.287439][ T379] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 341.307070][ T379] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 341.315486][ T379] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 341.323442][ T379] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 341.331396][ T379] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 341.339349][ T379] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 341.347304][ T379] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program [ 341.355385][ T379] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 341.387163][ T392] FAULT_INJECTION: forcing a failure. [ 341.387163][ T392] name failslab, interval 1, probability 0, space 0, times 0 [ 341.399899][ T392] CPU: 1 PID: 392 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 341.410131][ T392] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 341.420169][ T392] Call Trace: [ 341.423455][ T392] dump_stack_lvl+0x1e2/0x24b [ 341.428137][ T392] ? bfq_pos_tree_add_move+0x43e/0x43e write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 341.433573][ T392] ? selinux_kernfs_init_security+0x1a8/0x760 [ 341.439620][ T392] dump_stack+0x15/0x17 [ 341.443753][ T392] should_fail+0x3c0/0x510 [ 341.448146][ T392] ? __kernfs_new_node+0x99/0x6e0 [ 341.453155][ T392] __should_failslab+0x9f/0xe0 [ 341.457911][ T392] should_failslab+0x9/0x20 [ 341.462402][ T392] __kmalloc_track_caller+0x5f/0x350 [ 341.467671][ T392] kstrdup_const+0x55/0x90 [ 341.472154][ T392] __kernfs_new_node+0x99/0x6e0 [ 341.476989][ T392] ? is_module_text_address+0xe1/0x140 [ 341.482433][ T392] ? kernfs_new_node+0x170/0x170 [ 341.487359][ T392] ? ptr_to_hashval+0x60/0x60 [ 341.492018][ T392] ? arch_stack_walk+0xf8/0x140 [ 341.496850][ T392] ? snprintf+0xd6/0x120 [ 341.501078][ T392] kernfs_new_node+0x97/0x170 [ 341.505734][ T392] __kernfs_create_file+0x4a/0x270 [ 341.510832][ T392] cgroup_addrm_files+0xab8/0xfe0 [ 341.515848][ T392] ? ____kasan_kmalloc+0xdc/0x110 [ 341.520863][ T392] ? __kasan_kmalloc+0x9/0x10 [ 341.525523][ T392] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 341.531082][ T392] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 341.537221][ T392] ? delete_node+0x759/0x7b0 [ 341.541809][ T392] ? __kasan_check_read+0x11/0x20 [ 341.546813][ T392] ? delete_node+0x759/0x7b0 [ 341.551383][ T392] ? __kasan_check_write+0x14/0x20 [ 341.556481][ T392] ? idr_replace+0x1c4/0x230 [ 341.561054][ T392] ? idr_get_next+0x4b0/0x4b0 [ 341.565717][ T392] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 341.570727][ T392] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 341.575940][ T392] css_populate_dir+0x137/0x370 [ 341.580778][ T392] cgroup_apply_control_enable+0x8b9/0x12f0 [ 341.586655][ T392] cgroup_apply_control+0x93/0x710 [ 341.591746][ T392] ? css_next_child+0x160/0x160 [ 341.596577][ T392] ? release_task_stack+0x56a/0x660 [ 341.601882][ T392] ? io_schedule+0x120/0x120 [ 341.606457][ T392] ? kernfs_fop_write_iter+0x15e/0x410 [ 341.611909][ T392] ? __kasan_check_write+0x14/0x20 [ 341.617016][ T392] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 341.622286][ T392] cgroup_subtree_control_write+0xd19/0x1310 [ 341.628257][ T392] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 341.634230][ T392] ? __kasan_check_write+0x14/0x20 [ 341.639326][ T392] ? _copy_from_iter+0x3fb/0xd60 [ 341.644250][ T392] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 341.650215][ T392] cgroup_file_write+0x28e/0x590 [ 341.655134][ T392] ? cgroup_seqfile_stop+0xc0/0xc0 [ 341.660247][ T392] ? mutex_lock+0xa6/0x110 [ 341.664642][ T392] ? mutex_trylock+0xb0/0xb0 [ 341.669213][ T392] ? __kasan_check_write+0x14/0x20 [ 341.674311][ T392] kernfs_fop_write_iter+0x2d0/0x410 [ 341.679592][ T392] ? cgroup_seqfile_stop+0xc0/0xc0 [ 341.684686][ T392] vfs_write+0xc1c/0xf40 [ 341.688912][ T392] ? kernel_write+0x3c0/0x3c0 [ 341.693567][ T392] ? mutex_trylock+0xb0/0xb0 [ 341.698149][ T392] ? __fdget_pos+0x26d/0x310 [ 341.702726][ T392] ? ksys_write+0x77/0x2c0 [ 341.707120][ T392] ksys_write+0x198/0x2c0 [ 341.711451][ T392] ? __ia32_sys_read+0x90/0x90 [ 341.716198][ T392] ? debug_smp_processor_id+0x17/0x20 [ 341.721558][ T392] __x64_sys_write+0x7b/0x90 [ 341.726140][ T392] do_syscall_64+0x34/0x70 [ 341.730535][ T392] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 341.736409][ T392] RIP: 0033:0x7f5223098259 [ 341.740803][ T392] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 341.760502][ T392] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 341.768919][ T392] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 341.776880][ T392] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 341.784846][ T392] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 341.792809][ T392] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 341.801386][ T392] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 341.809528][ T392] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 341.837163][ T393] FAULT_INJECTION: forcing a failure. [ 341.837163][ T393] name failslab, interval 1, probability 0, space 0, times 0 [ 341.849840][ T393] CPU: 1 PID: 393 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 341.860056][ T393] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 341.870192][ T393] Call Trace: [ 341.873471][ T393] dump_stack_lvl+0x1e2/0x24b [ 341.878128][ T393] ? panic+0x7d7/0x7d7 [ 341.882179][ T393] ? bfq_pos_tree_add_move+0x43e/0x43e [ 341.887626][ T393] ? find_next_bit+0xd6/0x120 [ 341.892288][ T393] ? cpumask_next+0x11/0x30 [ 341.896774][ T393] dump_stack+0x15/0x17 [ 341.900930][ T393] should_fail+0x3c0/0x510 [ 341.905334][ T393] ? percpu_ref_init+0xd0/0x330 [ 341.910171][ T393] __should_failslab+0x9f/0xe0 [ 341.914920][ T393] should_failslab+0x9/0x20 [ 341.919405][ T393] kmem_cache_alloc_trace+0x3a/0x330 [ 341.924670][ T393] percpu_ref_init+0xd0/0x330 [ 341.929328][ T393] ? cgroup_setup_root+0xea0/0xea0 [ 341.934431][ T393] cgroup_apply_control_enable+0x3a2/0x12f0 [ 341.940317][ T393] cgroup_apply_control+0x93/0x710 [ 341.945416][ T393] ? css_next_child+0x160/0x160 [ 341.950254][ T393] ? io_schedule+0x120/0x120 [ 341.954828][ T393] ? kernfs_fop_write_iter+0x15e/0x410 [ 341.960269][ T393] ? __kasan_check_write+0x14/0x20 [ 341.965361][ T393] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 341.970629][ T393] cgroup_subtree_control_write+0xd19/0x1310 [ 341.976599][ T393] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 341.982564][ T393] ? __kasan_check_write+0x14/0x20 [ 341.987658][ T393] ? _copy_from_iter+0x3fb/0xd60 [ 341.992580][ T393] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 341.998544][ T393] cgroup_file_write+0x28e/0x590 [ 342.003464][ T393] ? cgroup_seqfile_stop+0xc0/0xc0 [ 342.008557][ T393] ? mutex_lock+0xa6/0x110 [ 342.012958][ T393] ? mutex_trylock+0xb0/0xb0 [ 342.017531][ T393] ? __kasan_check_write+0x14/0x20 [ 342.022626][ T393] kernfs_fop_write_iter+0x2d0/0x410 [ 342.027894][ T393] ? cgroup_seqfile_stop+0xc0/0xc0 [ 342.032992][ T393] vfs_write+0xc1c/0xf40 [ 342.037218][ T393] ? kernel_write+0x3c0/0x3c0 [ 342.041876][ T393] ? mutex_trylock+0xb0/0xb0 [ 342.046453][ T393] ? __fdget_pos+0x26d/0x310 [ 342.051022][ T393] ? ksys_write+0x77/0x2c0 [ 342.055419][ T393] ksys_write+0x198/0x2c0 [ 342.059737][ T393] ? __ia32_sys_read+0x90/0x90 [ 342.064486][ T393] ? debug_smp_processor_id+0x17/0x20 [ 342.069838][ T393] __x64_sys_write+0x7b/0x90 [ 342.074410][ T393] do_syscall_64+0x34/0x70 [ 342.078812][ T393] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 342.084685][ T393] RIP: 0033:0x7f5223098259 [ 342.089089][ T393] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 342.108677][ T393] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 342.117075][ T393] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 342.125035][ T393] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 342.132999][ T393] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 342.140960][ T393] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 342.148916][ T393] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 342.197156][ T394] FAULT_INJECTION: forcing a failure. [ 342.197156][ T394] name failslab, interval 1, probability 0, space 0, times 0 [ 342.209838][ T394] CPU: 1 PID: 394 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 342.220049][ T394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 342.230092][ T394] Call Trace: [ 342.233367][ T394] dump_stack_lvl+0x1e2/0x24b [ 342.238030][ T394] ? panic+0x7d7/0x7d7 [ 342.242085][ T394] ? bfq_pos_tree_add_move+0x43e/0x43e [ 342.247697][ T394] ? find_next_bit+0xd6/0x120 [ 342.252364][ T394] ? cpumask_next+0x11/0x30 [ 342.256842][ T394] dump_stack+0x15/0x17 [ 342.260977][ T394] should_fail+0x3c0/0x510 [ 342.265370][ T394] ? percpu_ref_init+0xd0/0x330 [ 342.270327][ T394] __should_failslab+0x9f/0xe0 [ 342.275086][ T394] should_failslab+0x9/0x20 [ 342.279590][ T394] kmem_cache_alloc_trace+0x3a/0x330 [ 342.284890][ T394] percpu_ref_init+0xd0/0x330 [ 342.289556][ T394] ? cgroup_setup_root+0xea0/0xea0 [ 342.295429][ T394] cgroup_apply_control_enable+0x3a2/0x12f0 [ 342.301303][ T394] cgroup_apply_control+0x93/0x710 [ 342.306395][ T394] ? css_next_child+0x160/0x160 [ 342.311225][ T394] ? io_schedule+0x120/0x120 [ 342.315791][ T394] ? kernfs_fop_write_iter+0x15e/0x410 [ 342.321230][ T394] ? __kasan_check_write+0x14/0x20 [ 342.326319][ T394] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 342.331586][ T394] cgroup_subtree_control_write+0xd19/0x1310 [ 342.337547][ T394] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 342.343506][ T394] ? __kasan_check_write+0x14/0x20 [ 342.348623][ T394] ? _copy_from_iter+0x3fb/0xd60 [ 342.353547][ T394] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 342.359523][ T394] cgroup_file_write+0x28e/0x590 [ 342.364445][ T394] ? cgroup_seqfile_stop+0xc0/0xc0 [ 342.369532][ T394] ? mutex_lock+0xa6/0x110 [ 342.373927][ T394] ? mutex_trylock+0xb0/0xb0 [ 342.378499][ T394] ? __kasan_check_write+0x14/0x20 [ 342.383590][ T394] kernfs_fop_write_iter+0x2d0/0x410 [ 342.388851][ T394] ? cgroup_seqfile_stop+0xc0/0xc0 [ 342.393939][ T394] vfs_write+0xc1c/0xf40 [ 342.398167][ T394] ? kernel_write+0x3c0/0x3c0 [ 342.402834][ T394] ? mutex_trylock+0xb0/0xb0 [ 342.407402][ T394] ? __fdget_pos+0x26d/0x310 [ 342.411967][ T394] ? ksys_write+0x77/0x2c0 [ 342.416359][ T394] ksys_write+0x198/0x2c0 [ 342.420681][ T394] ? __ia32_sys_read+0x90/0x90 [ 342.425435][ T394] ? debug_smp_processor_id+0x17/0x20 [ 342.430796][ T394] __x64_sys_write+0x7b/0x90 [ 342.435381][ T394] do_syscall_64+0x34/0x70 [ 342.439777][ T394] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 342.445646][ T394] RIP: 0033:0x7f5223098259 [ 342.450043][ T394] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 342.469646][ T394] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 342.478043][ T394] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 342.485992][ T394] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 342.493944][ T394] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 342.501897][ T394] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 342.509851][ T394] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 342.577190][ T397] FAULT_INJECTION: forcing a failure. [ 342.577190][ T397] name failslab, interval 1, probability 0, space 0, times 0 [ 342.589884][ T397] CPU: 1 PID: 397 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 342.600098][ T397] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 342.610135][ T397] Call Trace: [ 342.613405][ T397] dump_stack_lvl+0x1e2/0x24b [ 342.618061][ T397] ? bfq_pos_tree_add_move+0x43e/0x43e write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 342.623502][ T397] ? selinux_kernfs_init_security+0x1a8/0x760 [ 342.629549][ T397] dump_stack+0x15/0x17 [ 342.633692][ T397] should_fail+0x3c0/0x510 [ 342.638098][ T397] ? __kernfs_new_node+0x99/0x6e0 [ 342.643105][ T397] __should_failslab+0x9f/0xe0 [ 342.647849][ T397] should_failslab+0x9/0x20 [ 342.652331][ T397] __kmalloc_track_caller+0x5f/0x350 [ 342.657594][ T397] kstrdup_const+0x55/0x90 [ 342.661989][ T397] __kernfs_new_node+0x99/0x6e0 [ 342.666821][ T397] ? is_module_text_address+0xe1/0x140 [ 342.672280][ T397] ? kernfs_new_node+0x170/0x170 [ 342.677198][ T397] ? ptr_to_hashval+0x60/0x60 [ 342.681878][ T397] ? arch_stack_walk+0xf8/0x140 [ 342.686727][ T397] ? snprintf+0xd6/0x120 [ 342.690970][ T397] kernfs_new_node+0x97/0x170 [ 342.695627][ T397] __kernfs_create_file+0x4a/0x270 [ 342.700722][ T397] cgroup_addrm_files+0xab8/0xfe0 [ 342.705732][ T397] ? ____kasan_kmalloc+0xdc/0x110 [ 342.710734][ T397] ? __kasan_kmalloc+0x9/0x10 [ 342.715393][ T397] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 342.720921][ T397] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 342.727053][ T397] ? delete_node+0x759/0x7b0 [ 342.731635][ T397] ? __kasan_check_read+0x11/0x20 [ 342.736647][ T397] ? delete_node+0x759/0x7b0 [ 342.741224][ T397] ? __kasan_check_write+0x14/0x20 [ 342.746320][ T397] ? idr_replace+0x1c4/0x230 [ 342.751002][ T397] ? idr_get_next+0x4b0/0x4b0 [ 342.755656][ T397] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 342.760671][ T397] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 342.765856][ T397] css_populate_dir+0x137/0x370 [ 342.770786][ T397] cgroup_apply_control_enable+0x8b9/0x12f0 [ 342.776665][ T397] cgroup_apply_control+0x93/0x710 [ 342.781756][ T397] ? css_next_child+0x160/0x160 [ 342.786604][ T397] ? stack_trace_save+0x12d/0x1f0 [ 342.791614][ T397] ? io_schedule+0x120/0x120 [ 342.796182][ T397] ? kernfs_fop_write_iter+0x15e/0x410 [ 342.801619][ T397] ? __kasan_check_write+0x14/0x20 [ 342.806707][ T397] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 342.811968][ T397] cgroup_subtree_control_write+0xd19/0x1310 [ 342.817928][ T397] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 342.823886][ T397] ? __kasan_check_write+0x14/0x20 [ 342.828974][ T397] ? _copy_from_iter+0x3fb/0xd60 [ 342.833890][ T397] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 342.839842][ T397] cgroup_file_write+0x28e/0x590 [ 342.844765][ T397] ? cgroup_seqfile_stop+0xc0/0xc0 [ 342.849852][ T397] ? mutex_lock+0xa6/0x110 [ 342.854248][ T397] ? mutex_trylock+0xb0/0xb0 [ 342.858825][ T397] ? __kasan_check_write+0x14/0x20 [ 342.863915][ T397] kernfs_fop_write_iter+0x2d0/0x410 [ 342.869179][ T397] ? cgroup_seqfile_stop+0xc0/0xc0 [ 342.874270][ T397] vfs_write+0xc1c/0xf40 [ 342.878490][ T397] ? slab_free_freelist_hook+0xcc/0x1a0 [ 342.884010][ T397] ? kernel_write+0x3c0/0x3c0 [ 342.888667][ T397] ? mutex_trylock+0xb0/0xb0 [ 342.893236][ T397] ? __fdget_pos+0x26d/0x310 [ 342.897819][ T397] ? ksys_write+0x77/0x2c0 [ 342.902219][ T397] ksys_write+0x198/0x2c0 [ 342.906524][ T397] ? __ia32_sys_read+0x90/0x90 [ 342.911270][ T397] ? debug_smp_processor_id+0x17/0x20 [ 342.916627][ T397] __x64_sys_write+0x7b/0x90 [ 342.921198][ T397] do_syscall_64+0x34/0x70 [ 342.925596][ T397] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 342.931468][ T397] RIP: 0033:0x7f5223098259 [ 342.935861][ T397] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 342.955448][ T397] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 342.963844][ T397] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 executing program [ 342.971810][ T397] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 342.979759][ T397] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 342.987710][ T397] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 342.995671][ T397] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 343.004197][ T397] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 343.004433][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!! write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 343.057292][ T409] FAULT_INJECTION: forcing a failure. [ 343.057292][ T409] name failslab, interval 1, probability 0, space 0, times 0 [ 343.069989][ T409] CPU: 1 PID: 409 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 343.080218][ T409] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 343.090270][ T409] Call Trace: [ 343.093545][ T409] dump_stack_lvl+0x1e2/0x24b [ 343.098203][ T409] ? panic+0x7d7/0x7d7 [ 343.102253][ T409] ? bfq_pos_tree_add_move+0x43e/0x43e [ 343.107688][ T409] ? selinux_kernfs_init_security+0x1a8/0x760 [ 343.113730][ T409] dump_stack+0x15/0x17 [ 343.117863][ T409] should_fail+0x3c0/0x510 [ 343.122262][ T409] __should_failslab+0x9f/0xe0 [ 343.127035][ T409] should_failslab+0x9/0x20 [ 343.131518][ T409] kmem_cache_alloc+0x3f/0x300 [ 343.136261][ T409] ? __kernfs_new_node+0xdb/0x6e0 [ 343.141349][ T409] __kernfs_new_node+0xdb/0x6e0 [ 343.146202][ T409] ? is_module_text_address+0xe1/0x140 [ 343.151648][ T409] ? kernfs_new_node+0x170/0x170 [ 343.156565][ T409] ? ptr_to_hashval+0x60/0x60 [ 343.161227][ T409] ? snprintf+0xd6/0x120 [ 343.165447][ T409] ? __kasan_check_write+0x14/0x20 [ 343.170535][ T409] ? mutex_unlock+0x1d/0x40 [ 343.175020][ T409] kernfs_new_node+0x97/0x170 [ 343.179677][ T409] __kernfs_create_file+0x4a/0x270 [ 343.184775][ T409] cgroup_addrm_files+0xab8/0xfe0 [ 343.189779][ T409] ? ____kasan_kmalloc+0xdc/0x110 [ 343.194794][ T409] ? __kasan_kmalloc+0x9/0x10 [ 343.199452][ T409] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 343.204978][ T409] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 343.211119][ T409] ? delete_node+0x759/0x7b0 [ 343.215775][ T409] ? __kasan_check_read+0x11/0x20 [ 343.220788][ T409] ? idr_replace+0x1c4/0x230 [ 343.225358][ T409] ? idr_get_next+0x4b0/0x4b0 [ 343.230016][ T409] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 343.235027][ T409] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 343.240206][ T409] css_populate_dir+0x137/0x370 [ 343.245052][ T409] cgroup_apply_control_enable+0x8b9/0x12f0 [ 343.250926][ T409] cgroup_apply_control+0x93/0x710 [ 343.256107][ T409] ? css_next_child+0x160/0x160 [ 343.260937][ T409] ? stack_trace_save+0x12d/0x1f0 [ 343.265941][ T409] ? io_schedule+0x120/0x120 [ 343.270518][ T409] ? kernfs_fop_write_iter+0x15e/0x410 [ 343.275954][ T409] ? __kasan_check_write+0x14/0x20 [ 343.281047][ T409] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 343.286325][ T409] cgroup_subtree_control_write+0xd19/0x1310 [ 343.292284][ T409] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 343.298243][ T409] ? __kasan_check_write+0x14/0x20 [ 343.303334][ T409] ? _copy_from_iter+0x3fb/0xd60 [ 343.308249][ T409] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 343.314204][ T409] cgroup_file_write+0x28e/0x590 [ 343.319120][ T409] ? cgroup_seqfile_stop+0xc0/0xc0 [ 343.324211][ T409] ? mutex_lock+0xa6/0x110 [ 343.328602][ T409] ? mutex_trylock+0xb0/0xb0 [ 343.333173][ T409] ? __kasan_check_write+0x14/0x20 [ 343.338259][ T409] kernfs_fop_write_iter+0x2d0/0x410 [ 343.343520][ T409] ? cgroup_seqfile_stop+0xc0/0xc0 [ 343.348612][ T409] vfs_write+0xc1c/0xf40 [ 343.352831][ T409] ? slab_free_freelist_hook+0xcc/0x1a0 [ 343.358355][ T409] ? kernel_write+0x3c0/0x3c0 [ 343.363009][ T409] ? mutex_trylock+0xb0/0xb0 [ 343.367576][ T409] ? __fdget_pos+0x26d/0x310 [ 343.372141][ T409] ? ksys_write+0x77/0x2c0 [ 343.376533][ T409] ksys_write+0x198/0x2c0 [ 343.380840][ T409] ? __ia32_sys_read+0x90/0x90 [ 343.385583][ T409] ? debug_smp_processor_id+0x17/0x20 [ 343.390932][ T409] __x64_sys_write+0x7b/0x90 [ 343.395503][ T409] do_syscall_64+0x34/0x70 [ 343.399901][ T409] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 343.405774][ T409] RIP: 0033:0x7f5223098259 [ 343.410165][ T409] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 343.429750][ T409] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 343.438148][ T409] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 343.446107][ T409] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program [ 343.454054][ T409] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 343.462010][ T409] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 343.469967][ T409] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 343.478191][ T409] cgroup: cgroup_addrm_files: failed to add events, err=-12 [ 343.507068][ T395] FAULT_INJECTION: forcing a failure. [ 343.507068][ T395] name failslab, interval 1, probability 0, space 0, times 0 [ 343.519798][ T395] CPU: 1 PID: 395 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 343.530051][ T395] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 343.540090][ T395] Call Trace: [ 343.543364][ T395] dump_stack_lvl+0x1e2/0x24b [ 343.548020][ T395] ? panic+0x7d7/0x7d7 [ 343.552086][ T395] ? bfq_pos_tree_add_move+0x43e/0x43e write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 343.557526][ T395] ? find_next_bit+0xd6/0x120 [ 343.562181][ T395] ? cpumask_next+0x11/0x30 [ 343.566661][ T395] dump_stack+0x15/0x17 [ 343.570809][ T395] should_fail+0x3c0/0x510 [ 343.575295][ T395] ? percpu_ref_init+0xd0/0x330 [ 343.580125][ T395] __should_failslab+0x9f/0xe0 [ 343.584867][ T395] should_failslab+0x9/0x20 [ 343.589368][ T395] kmem_cache_alloc_trace+0x3a/0x330 [ 343.594636][ T395] percpu_ref_init+0xd0/0x330 [ 343.599316][ T395] ? cgroup_setup_root+0xea0/0xea0 [ 343.604421][ T395] cgroup_apply_control_enable+0x3a2/0x12f0 [ 343.610311][ T395] cgroup_apply_control+0x93/0x710 [ 343.615411][ T395] ? css_next_child+0x160/0x160 [ 343.620244][ T395] ? io_schedule+0x120/0x120 [ 343.624817][ T395] ? kernfs_fop_write_iter+0x15e/0x410 [ 343.630258][ T395] ? __kasan_check_write+0x14/0x20 [ 343.635350][ T395] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 343.640620][ T395] cgroup_subtree_control_write+0xd19/0x1310 [ 343.646586][ T395] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 343.652558][ T395] ? __kasan_check_write+0x14/0x20 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 343.657709][ T395] ? _copy_from_iter+0x3fb/0xd60 [ 343.662622][ T395] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 343.668590][ T395] cgroup_file_write+0x28e/0x590 [ 343.673514][ T395] ? cgroup_seqfile_stop+0xc0/0xc0 [ 343.678869][ T395] ? mutex_lock+0xa6/0x110 [ 343.683268][ T395] ? mutex_trylock+0xb0/0xb0 [ 343.687848][ T395] ? __kasan_check_write+0x14/0x20 [ 343.692942][ T395] kernfs_fop_write_iter+0x2d0/0x410 [ 343.698206][ T395] ? cgroup_seqfile_stop+0xc0/0xc0 [ 343.703307][ T395] vfs_write+0xc1c/0xf40 [ 343.707533][ T395] ? kernel_write+0x3c0/0x3c0 [ 343.712194][ T395] ? mutex_trylock+0xb0/0xb0 [ 343.716764][ T395] ? __fdget_pos+0x26d/0x310 [ 343.721332][ T395] ? ksys_write+0x77/0x2c0 [ 343.725733][ T395] ksys_write+0x198/0x2c0 [ 343.730053][ T395] ? __ia32_sys_read+0x90/0x90 [ 343.734806][ T395] ? debug_smp_processor_id+0x17/0x20 [ 343.740155][ T395] __x64_sys_write+0x7b/0x90 [ 343.744734][ T395] do_syscall_64+0x34/0x70 [ 343.749131][ T395] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 343.755004][ T395] RIP: 0033:0x7f5223098259 [ 343.759396][ T395] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 343.778982][ T395] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 343.787376][ T395] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 343.795326][ T395] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 343.803279][ T395] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 343.811237][ T395] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 343.819276][ T395] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 343.896973][ T391] FAULT_INJECTION: forcing a failure. [ 343.896973][ T391] name failslab, interval 1, probability 0, space 0, times 0 [ 343.909764][ T391] CPU: 1 PID: 391 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 343.920002][ T391] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 343.930037][ T391] Call Trace: [ 343.933316][ T391] dump_stack_lvl+0x1e2/0x24b [ 343.937967][ T391] ? bfq_pos_tree_add_move+0x43e/0x43e [ 343.943398][ T391] dump_stack+0x15/0x17 [ 343.947530][ T391] should_fail+0x3c0/0x510 [ 343.952042][ T391] ? pids_css_alloc+0x4e/0x120 [ 343.956805][ T391] __should_failslab+0x9f/0xe0 [ 343.961559][ T391] should_failslab+0x9/0x20 [ 343.966141][ T391] kmem_cache_alloc_trace+0x3a/0x330 [ 343.971404][ T391] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 343.976576][ T391] pids_css_alloc+0x4e/0x120 [ 343.981143][ T391] cgroup_apply_control_enable+0x350/0x12f0 [ 343.987014][ T391] cgroup_apply_control+0x93/0x710 [ 343.992103][ T391] ? css_next_child+0x160/0x160 [ 343.996930][ T391] ? io_schedule+0x120/0x120 [ 344.001502][ T391] ? kernfs_fop_write_iter+0x15e/0x410 [ 344.006955][ T391] ? __kasan_check_write+0x14/0x20 [ 344.012046][ T391] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 344.017405][ T391] cgroup_subtree_control_write+0xd19/0x1310 [ 344.023367][ T391] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 344.029326][ T391] ? __kasan_check_write+0x14/0x20 [ 344.034417][ T391] ? _copy_from_iter+0x3fb/0xd60 [ 344.039333][ T391] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 344.045298][ T391] cgroup_file_write+0x28e/0x590 [ 344.050218][ T391] ? cgroup_seqfile_stop+0xc0/0xc0 [ 344.055306][ T391] ? mutex_lock+0xa6/0x110 [ 344.059700][ T391] ? mutex_trylock+0xb0/0xb0 [ 344.064277][ T391] ? __kasan_check_write+0x14/0x20 [ 344.069378][ T391] kernfs_fop_write_iter+0x2d0/0x410 [ 344.074651][ T391] ? cgroup_seqfile_stop+0xc0/0xc0 [ 344.079743][ T391] vfs_write+0xc1c/0xf40 [ 344.083998][ T391] ? kernel_write+0x3c0/0x3c0 [ 344.088653][ T391] ? mutex_trylock+0xb0/0xb0 [ 344.093241][ T391] ? __fdget_pos+0x26d/0x310 [ 344.097810][ T391] ? ksys_write+0x77/0x2c0 [ 344.102205][ T391] ksys_write+0x198/0x2c0 [ 344.106515][ T391] ? __ia32_sys_read+0x90/0x90 [ 344.111264][ T391] ? debug_smp_processor_id+0x17/0x20 [ 344.116616][ T391] __x64_sys_write+0x7b/0x90 [ 344.121183][ T391] do_syscall_64+0x34/0x70 [ 344.125578][ T391] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 344.131453][ T391] RIP: 0033:0x7f5223098259 [ 344.135865][ T391] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 344.155449][ T391] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 344.163841][ T391] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 344.171800][ T391] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 344.179777][ T391] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 344.187727][ T391] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 executing program [ 344.195678][ T391] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 344.227125][ T400] FAULT_INJECTION: forcing a failure. [ 344.227125][ T400] name failslab, interval 1, probability 0, space 0, times 0 [ 344.239921][ T400] CPU: 0 PID: 400 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 344.250147][ T400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 344.260279][ T400] Call Trace: [ 344.263568][ T400] dump_stack_lvl+0x1e2/0x24b [ 344.268226][ T400] ? panic+0x7d7/0x7d7 [ 344.272274][ T400] ? bfq_pos_tree_add_move+0x43e/0x43e [ 344.277712][ T400] ? find_next_bit+0xd6/0x120 [ 344.282367][ T400] ? cpumask_next+0x11/0x30 [ 344.286849][ T400] dump_stack+0x15/0x17 [ 344.290980][ T400] should_fail+0x3c0/0x510 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 344.295380][ T400] ? percpu_ref_init+0xd0/0x330 [ 344.300218][ T400] __should_failslab+0x9f/0xe0 [ 344.304978][ T400] should_failslab+0x9/0x20 [ 344.309472][ T400] kmem_cache_alloc_trace+0x3a/0x330 [ 344.314915][ T400] percpu_ref_init+0xd0/0x330 [ 344.319667][ T400] ? cgroup_setup_root+0xea0/0xea0 [ 344.324764][ T400] cgroup_apply_control_enable+0x3a2/0x12f0 [ 344.330673][ T400] cgroup_apply_control+0x93/0x710 [ 344.335788][ T400] ? css_next_child+0x160/0x160 [ 344.340633][ T400] ? io_schedule+0x120/0x120 [ 344.345209][ T400] ? kernfs_fop_write_iter+0x15e/0x410 [ 344.350664][ T400] ? __kasan_check_write+0x14/0x20 [ 344.355757][ T400] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 344.361029][ T400] cgroup_subtree_control_write+0xd19/0x1310 [ 344.366993][ T400] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 344.372959][ T400] ? __kasan_check_write+0x14/0x20 [ 344.378063][ T400] ? _copy_from_iter+0x3fb/0xd60 [ 344.382995][ T400] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 344.388962][ T400] cgroup_file_write+0x28e/0x590 [ 344.393893][ T400] ? cgroup_seqfile_stop+0xc0/0xc0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 344.398986][ T400] ? mutex_lock+0xa6/0x110 [ 344.403379][ T400] ? mutex_trylock+0xb0/0xb0 [ 344.407956][ T400] ? __kasan_check_write+0x14/0x20 [ 344.413050][ T400] kernfs_fop_write_iter+0x2d0/0x410 [ 344.418314][ T400] ? cgroup_seqfile_stop+0xc0/0xc0 [ 344.423413][ T400] vfs_write+0xc1c/0xf40 [ 344.427640][ T400] ? kernel_write+0x3c0/0x3c0 [ 344.432297][ T400] ? mutex_trylock+0xb0/0xb0 [ 344.436866][ T400] ? __fdget_pos+0x26d/0x310 [ 344.441518][ T400] ? ksys_write+0x77/0x2c0 [ 344.445910][ T400] ksys_write+0x198/0x2c0 [ 344.450219][ T400] ? __ia32_sys_read+0x90/0x90 [ 344.454964][ T400] ? debug_smp_processor_id+0x17/0x20 [ 344.460321][ T400] __x64_sys_write+0x7b/0x90 [ 344.464891][ T400] do_syscall_64+0x34/0x70 [ 344.469288][ T400] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 344.475159][ T400] RIP: 0033:0x7f5223098259 [ 344.479565][ T400] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 344.499160][ T400] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 344.507554][ T400] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 344.515508][ T400] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 344.523463][ T400] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 344.531417][ T400] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 344.539367][ T400] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 344.577185][ T406] FAULT_INJECTION: forcing a failure. [ 344.577185][ T406] name failslab, interval 1, probability 0, space 0, times 0 [ 344.590109][ T406] CPU: 1 PID: 406 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 344.600324][ T406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 344.610359][ T406] Call Trace: [ 344.613632][ T406] dump_stack_lvl+0x1e2/0x24b [ 344.618307][ T406] ? panic+0x7d7/0x7d7 [ 344.622367][ T406] ? bfq_pos_tree_add_move+0x43e/0x43e [ 344.627814][ T406] ? find_next_bit+0xd6/0x120 [ 344.632472][ T406] ? cpumask_next+0x11/0x30 [ 344.636957][ T406] dump_stack+0x15/0x17 [ 344.641092][ T406] should_fail+0x3c0/0x510 [ 344.645496][ T406] ? percpu_ref_init+0xd0/0x330 [ 344.650338][ T406] __should_failslab+0x9f/0xe0 [ 344.655093][ T406] should_failslab+0x9/0x20 [ 344.659581][ T406] kmem_cache_alloc_trace+0x3a/0x330 [ 344.664848][ T406] percpu_ref_init+0xd0/0x330 [ 344.669531][ T406] ? cgroup_setup_root+0xea0/0xea0 [ 344.674639][ T406] cgroup_apply_control_enable+0x3a2/0x12f0 [ 344.680524][ T406] cgroup_apply_control+0x93/0x710 [ 344.685626][ T406] ? css_next_child+0x160/0x160 [ 344.690462][ T406] ? io_schedule+0x120/0x120 [ 344.695033][ T406] ? kernfs_fop_write_iter+0x15e/0x410 [ 344.700477][ T406] ? __kasan_check_write+0x14/0x20 [ 344.705570][ T406] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 344.710838][ T406] cgroup_subtree_control_write+0xd19/0x1310 [ 344.716804][ T406] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 344.722767][ T406] ? __kasan_check_write+0x14/0x20 [ 344.727859][ T406] ? _copy_from_iter+0x3fb/0xd60 [ 344.732778][ T406] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 344.738739][ T406] cgroup_file_write+0x28e/0x590 [ 344.743660][ T406] ? cgroup_seqfile_stop+0xc0/0xc0 [ 344.748755][ T406] ? mutex_lock+0xa6/0x110 [ 344.753155][ T406] ? mutex_trylock+0xb0/0xb0 [ 344.757729][ T406] ? __kasan_check_write+0x14/0x20 [ 344.762824][ T406] kernfs_fop_write_iter+0x2d0/0x410 [ 344.768096][ T406] ? cgroup_seqfile_stop+0xc0/0xc0 [ 344.773279][ T406] vfs_write+0xc1c/0xf40 [ 344.777508][ T406] ? kernel_write+0x3c0/0x3c0 [ 344.782169][ T406] ? mutex_trylock+0xb0/0xb0 [ 344.786771][ T406] ? __fdget_pos+0x26d/0x310 [ 344.791343][ T406] ? ksys_write+0x77/0x2c0 [ 344.795745][ T406] ksys_write+0x198/0x2c0 [ 344.800062][ T406] ? __ia32_sys_read+0x90/0x90 [ 344.804809][ T406] ? debug_smp_processor_id+0x17/0x20 [ 344.810178][ T406] __x64_sys_write+0x7b/0x90 [ 344.814770][ T406] do_syscall_64+0x34/0x70 [ 344.819183][ T406] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 344.825058][ T406] RIP: 0033:0x7f5223098259 [ 344.829455][ T406] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 344.849073][ T406] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 344.857475][ T406] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 344.865430][ T406] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 344.873384][ T406] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 344.881339][ T406] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 344.889295][ T406] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 344.899950][ T376] ------------[ cut here ]------------ [ 344.905747][ T376] WARNING: CPU: 1 PID: 376 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 344.914749][ T376] Modules linked in: [ 344.918696][ T376] CPU: 1 PID: 376 Comm: syz-executor325 Not tainted 5.10.109-syzkaller-00693-g414e6c8e941c #0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 344.928933][ T376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 344.939151][ T376] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 344.944763][ T376] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 344.964500][ T376] RSP: 0018:ffffc90000b97ca0 EFLAGS: 00010293 [ 344.970637][ T376] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881077913c0 [ 344.978735][ T376] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 344.986742][ T376] RBP: ffffc90000b97d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 344.994718][ T376] R10: fffff52000172f85 R11: 1ffff92000172f84 R12: dffffc0000000000 [ 345.002709][ T376] R13: ffff888105fa2a80 R14: ffffc90000b97d00 R15: 1ffff92000172f9c [ 345.010716][ T376] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 345.019678][ T376] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 345.026261][ T376] CR2: 00007ffca92ff968 CR3: 000000011cee9000 CR4: 00000000003506a0 [ 345.034247][ T376] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 345.042236][ T376] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 345.050225][ T376] Call Trace: [ 345.053878][ T376] ? lockref_get_or_lock+0x340/0x340 [ 345.059187][ T376] ? umount_tree+0xf50/0xf50 [ 345.063782][ T376] ? vfs_submount+0xb0/0xb0 [ 345.068301][ T376] ? dput+0x2b6/0x320 [ 345.072286][ T376] path_umount+0x1fe/0xfb0 [ 345.076721][ T376] ? namespace_unlock+0x4f0/0x4f0 [ 345.081749][ T376] ? user_path_at_empty+0x40/0x50 [ 345.086788][ T376] __x64_sys_umount+0x122/0x170 [ 345.091638][ T376] ? path_umount+0xfb0/0xfb0 [ 345.096208][ T376] ? debug_smp_processor_id+0x17/0x20 [ 345.101588][ T376] do_syscall_64+0x34/0x70 [ 345.106007][ T376] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 345.111921][ T376] RIP: 0033:0x7f5223099667 [ 345.116335][ T376] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 345.135955][ T376] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 345.144393][ T376] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 345.152379][ T376] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 345.160370][ T376] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 345.168368][ T376] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 executing program [ 345.176417][ T376] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 345.184546][ T376] ---[ end trace 049b4861796392e5 ]--- [ 345.207038][ T415] FAULT_INJECTION: forcing a failure. [ 345.207038][ T415] name failslab, interval 1, probability 0, space 0, times 0 [ 345.219758][ T415] CPU: 0 PID: 415 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 345.231362][ T415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 345.241400][ T415] Call Trace: [ 345.244679][ T415] dump_stack_lvl+0x1e2/0x24b [ 345.249427][ T415] ? panic+0x7d7/0x7d7 [ 345.253476][ T415] ? bfq_pos_tree_add_move+0x43e/0x43e [ 345.259018][ T415] ? find_next_bit+0xd6/0x120 [ 345.263675][ T415] ? cpumask_next+0x11/0x30 [ 345.268167][ T415] dump_stack+0x15/0x17 [ 345.272306][ T415] should_fail+0x3c0/0x510 [ 345.276712][ T415] ? percpu_ref_init+0xd0/0x330 [ 345.281653][ T415] __should_failslab+0x9f/0xe0 [ 345.286511][ T415] should_failslab+0x9/0x20 [ 345.291003][ T415] kmem_cache_alloc_trace+0x3a/0x330 [ 345.296268][ T415] percpu_ref_init+0xd0/0x330 [ 345.300929][ T415] ? cgroup_setup_root+0xea0/0xea0 [ 345.306022][ T415] cgroup_apply_control_enable+0x3a2/0x12f0 [ 345.311896][ T415] cgroup_apply_control+0x93/0x710 [ 345.316988][ T415] ? css_next_child+0x160/0x160 [ 345.321818][ T415] ? io_schedule+0x120/0x120 [ 345.326408][ T415] ? kernfs_fop_write_iter+0x15e/0x410 [ 345.331859][ T415] ? __kasan_check_write+0x14/0x20 [ 345.336954][ T415] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 345.342218][ T415] cgroup_subtree_control_write+0xd19/0x1310 [ 345.348180][ T415] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 345.354161][ T415] ? __kasan_check_write+0x14/0x20 [ 345.359269][ T415] ? _copy_from_iter+0x3fb/0xd60 [ 345.364186][ T415] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 345.370144][ T415] cgroup_file_write+0x28e/0x590 [ 345.375069][ T415] ? cgroup_seqfile_stop+0xc0/0xc0 [ 345.380166][ T415] ? mutex_lock+0xa6/0x110 [ 345.384581][ T415] ? mutex_trylock+0xb0/0xb0 [ 345.389153][ T415] ? __kasan_check_write+0x14/0x20 [ 345.394246][ T415] kernfs_fop_write_iter+0x2d0/0x410 [ 345.399512][ T415] ? cgroup_seqfile_stop+0xc0/0xc0 [ 345.404622][ T415] vfs_write+0xc1c/0xf40 [ 345.408854][ T415] ? kernel_write+0x3c0/0x3c0 [ 345.413518][ T415] ? mutex_trylock+0xb0/0xb0 [ 345.418093][ T415] ? __fdget_pos+0x26d/0x310 [ 345.422665][ T415] ? ksys_write+0x77/0x2c0 [ 345.427063][ T415] ksys_write+0x198/0x2c0 [ 345.431462][ T415] ? __ia32_sys_read+0x90/0x90 [ 345.436210][ T415] ? debug_smp_processor_id+0x17/0x20 [ 345.441685][ T415] __x64_sys_write+0x7b/0x90 [ 345.446278][ T415] do_syscall_64+0x34/0x70 [ 345.450684][ T415] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 345.456559][ T415] RIP: 0033:0x7f5223098259 [ 345.460955][ T415] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 345.480546][ T415] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 345.488948][ T415] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 345.496904][ T415] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 345.504867][ T415] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 345.512917][ T415] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 345.520877][ T415] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 345.547146][ T418] FAULT_INJECTION: forcing a failure. [ 345.547146][ T418] name failslab, interval 1, probability 0, space 0, times 0 [ 345.559877][ T418] CPU: 0 PID: 418 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 345.571505][ T418] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 345.581552][ T418] Call Trace: [ 345.584839][ T418] dump_stack_lvl+0x1e2/0x24b [ 345.589602][ T418] ? bfq_pos_tree_add_move+0x43e/0x43e [ 345.595064][ T418] ? selinux_kernfs_init_security+0x1a8/0x760 [ 345.601111][ T418] dump_stack+0x15/0x17 [ 345.605263][ T418] should_fail+0x3c0/0x510 [ 345.609659][ T418] ? __kernfs_new_node+0x99/0x6e0 [ 345.614661][ T418] __should_failslab+0x9f/0xe0 [ 345.619399][ T418] should_failslab+0x9/0x20 [ 345.623887][ T418] __kmalloc_track_caller+0x5f/0x350 [ 345.629151][ T418] kstrdup_const+0x55/0x90 [ 345.633545][ T418] __kernfs_new_node+0x99/0x6e0 [ 345.638380][ T418] ? is_module_text_address+0xe1/0x140 [ 345.643816][ T418] ? kernfs_new_node+0x170/0x170 [ 345.648735][ T418] ? ptr_to_hashval+0x60/0x60 [ 345.653398][ T418] ? arch_stack_walk+0xf8/0x140 [ 345.658229][ T418] ? snprintf+0xd6/0x120 [ 345.662446][ T418] kernfs_new_node+0x97/0x170 [ 345.667124][ T418] __kernfs_create_file+0x4a/0x270 [ 345.672217][ T418] cgroup_addrm_files+0xab8/0xfe0 [ 345.677228][ T418] ? ____kasan_kmalloc+0xdc/0x110 [ 345.682234][ T418] ? __kasan_kmalloc+0x9/0x10 [ 345.686906][ T418] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 345.692434][ T418] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 345.698573][ T418] ? delete_node+0x759/0x7b0 [ 345.703167][ T418] ? __kasan_check_read+0x11/0x20 [ 345.708169][ T418] ? delete_node+0x759/0x7b0 [ 345.712736][ T418] ? __kasan_check_write+0x14/0x20 [ 345.717825][ T418] ? idr_replace+0x1c4/0x230 [ 345.722396][ T418] ? idr_get_next+0x4b0/0x4b0 [ 345.727069][ T418] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 345.732070][ T418] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 345.737249][ T418] css_populate_dir+0x137/0x370 [ 345.742098][ T418] cgroup_apply_control_enable+0x8b9/0x12f0 [ 345.747973][ T418] cgroup_apply_control+0x93/0x710 [ 345.753079][ T418] ? css_next_child+0x160/0x160 [ 345.757912][ T418] ? release_task_stack+0x4c2/0x660 [ 345.763110][ T418] ? io_schedule+0x120/0x120 [ 345.767680][ T418] ? kernfs_fop_write_iter+0x15e/0x410 [ 345.773134][ T418] ? __kasan_check_write+0x14/0x20 [ 345.778240][ T418] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 345.783515][ T418] cgroup_subtree_control_write+0xd19/0x1310 [ 345.789478][ T418] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 345.795440][ T418] ? __kasan_check_write+0x14/0x20 [ 345.800532][ T418] ? _copy_from_iter+0x3fb/0xd60 [ 345.805473][ T418] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 345.811457][ T418] cgroup_file_write+0x28e/0x590 [ 345.816372][ T418] ? cgroup_seqfile_stop+0xc0/0xc0 [ 345.821460][ T418] ? mutex_lock+0xa6/0x110 [ 345.825855][ T418] ? mutex_trylock+0xb0/0xb0 [ 345.830428][ T418] ? __kasan_check_write+0x14/0x20 [ 345.835516][ T418] kernfs_fop_write_iter+0x2d0/0x410 [ 345.841574][ T418] ? cgroup_seqfile_stop+0xc0/0xc0 [ 345.846670][ T418] vfs_write+0xc1c/0xf40 [ 345.850895][ T418] ? kernel_write+0x3c0/0x3c0 [ 345.855552][ T418] ? mutex_trylock+0xb0/0xb0 [ 345.860118][ T418] ? __fdget_pos+0x26d/0x310 [ 345.864683][ T418] ? ksys_write+0x77/0x2c0 [ 345.869130][ T418] ksys_write+0x198/0x2c0 [ 345.873439][ T418] ? __kasan_check_write+0x14/0x20 [ 345.878527][ T418] ? __ia32_sys_read+0x90/0x90 [ 345.883269][ T418] __x64_sys_write+0x7b/0x90 [ 345.887835][ T418] do_syscall_64+0x34/0x70 [ 345.892227][ T418] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 345.898103][ T418] RIP: 0033:0x7f5223098259 [ 345.902504][ T418] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 345.922230][ T418] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 345.930847][ T418] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 345.938899][ T418] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 345.946945][ T418] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 345.954897][ T418] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 345.962854][ T418] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 345.971379][ T418] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 346.017184][ T412] FAULT_INJECTION: forcing a failure. [ 346.017184][ T412] name failslab, interval 1, probability 0, space 0, times 0 [ 346.029828][ T412] CPU: 1 PID: 412 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 346.041435][ T412] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 346.051474][ T412] Call Trace: [ 346.054769][ T412] dump_stack_lvl+0x1e2/0x24b [ 346.059541][ T412] ? panic+0x7d7/0x7d7 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 346.063611][ T412] ? bfq_pos_tree_add_move+0x43e/0x43e [ 346.069066][ T412] ? find_next_bit+0xd6/0x120 [ 346.073732][ T412] ? cpumask_next+0x11/0x30 [ 346.078217][ T412] dump_stack+0x15/0x17 [ 346.082358][ T412] should_fail+0x3c0/0x510 [ 346.086765][ T412] ? percpu_ref_init+0xd0/0x330 [ 346.091612][ T412] __should_failslab+0x9f/0xe0 [ 346.096364][ T412] should_failslab+0x9/0x20 [ 346.100847][ T412] kmem_cache_alloc_trace+0x3a/0x330 [ 346.106118][ T412] percpu_ref_init+0xd0/0x330 [ 346.110784][ T412] ? cgroup_setup_root+0xea0/0xea0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 346.115875][ T412] cgroup_apply_control_enable+0x3a2/0x12f0 [ 346.121750][ T412] cgroup_apply_control+0x93/0x710 [ 346.126846][ T412] ? css_next_child+0x160/0x160 [ 346.131694][ T412] ? io_schedule+0x120/0x120 [ 346.136267][ T412] ? kernfs_fop_write_iter+0x15e/0x410 [ 346.141706][ T412] ? __kasan_check_write+0x14/0x20 [ 346.146904][ T412] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 346.152179][ T412] cgroup_subtree_control_write+0xd19/0x1310 [ 346.158145][ T412] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 346.164116][ T412] ? __kasan_check_write+0x14/0x20 [ 346.169237][ T412] ? _copy_from_iter+0x3fb/0xd60 [ 346.174181][ T412] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 346.180146][ T412] cgroup_file_write+0x28e/0x590 [ 346.185062][ T412] ? cgroup_seqfile_stop+0xc0/0xc0 [ 346.190179][ T412] ? mutex_lock+0xa6/0x110 [ 346.194581][ T412] ? mutex_trylock+0xb0/0xb0 [ 346.199152][ T412] ? __kasan_check_write+0x14/0x20 [ 346.204246][ T412] kernfs_fop_write_iter+0x2d0/0x410 [ 346.209534][ T412] ? cgroup_seqfile_stop+0xc0/0xc0 [ 346.214634][ T412] vfs_write+0xc1c/0xf40 [ 346.218956][ T412] ? kernel_write+0x3c0/0x3c0 [ 346.223643][ T412] ? mutex_trylock+0xb0/0xb0 [ 346.228214][ T412] ? __fdget_pos+0x26d/0x310 [ 346.232825][ T412] ? ksys_write+0x77/0x2c0 [ 346.237223][ T412] ksys_write+0x198/0x2c0 [ 346.241534][ T412] ? __ia32_sys_read+0x90/0x90 [ 346.246282][ T412] ? debug_smp_processor_id+0x17/0x20 [ 346.251639][ T412] __x64_sys_write+0x7b/0x90 [ 346.256219][ T412] do_syscall_64+0x34/0x70 [ 346.260637][ T412] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 346.266519][ T412] RIP: 0033:0x7f5223098259 [ 346.270917][ T412] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 346.290592][ T412] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 346.299039][ T412] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 346.306998][ T412] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 346.314951][ T412] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 346.322905][ T412] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 346.330861][ T412] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 346.387248][ T427] FAULT_INJECTION: forcing a failure. [ 346.387248][ T427] name failslab, interval 1, probability 0, space 0, times 0 [ 346.399937][ T427] CPU: 0 PID: 427 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 346.411551][ T427] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 346.421588][ T427] Call Trace: [ 346.424857][ T427] dump_stack_lvl+0x1e2/0x24b [ 346.429534][ T427] ? bfq_pos_tree_add_move+0x43e/0x43e [ 346.434969][ T427] ? selinux_kernfs_init_security+0x1a8/0x760 [ 346.441011][ T427] dump_stack+0x15/0x17 [ 346.445147][ T427] should_fail+0x3c0/0x510 [ 346.449539][ T427] ? __kernfs_new_node+0x99/0x6e0 [ 346.454544][ T427] __should_failslab+0x9f/0xe0 [ 346.459285][ T427] should_failslab+0x9/0x20 [ 346.463772][ T427] __kmalloc_track_caller+0x5f/0x350 [ 346.469038][ T427] kstrdup_const+0x55/0x90 [ 346.473434][ T427] __kernfs_new_node+0x99/0x6e0 [ 346.478260][ T427] ? is_module_text_address+0xe1/0x140 [ 346.483697][ T427] ? kernfs_new_node+0x170/0x170 [ 346.488611][ T427] ? ptr_to_hashval+0x60/0x60 [ 346.493267][ T427] ? arch_stack_walk+0xf8/0x140 [ 346.498110][ T427] ? snprintf+0xd6/0x120 [ 346.502334][ T427] kernfs_new_node+0x97/0x170 [ 346.506991][ T427] __kernfs_create_file+0x4a/0x270 [ 346.512082][ T427] cgroup_addrm_files+0xab8/0xfe0 [ 346.517111][ T427] ? ____kasan_kmalloc+0xdc/0x110 [ 346.522115][ T427] ? __kasan_kmalloc+0x9/0x10 [ 346.526771][ T427] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 346.532317][ T427] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 346.538448][ T427] ? delete_node+0x759/0x7b0 [ 346.543017][ T427] ? __kasan_check_read+0x11/0x20 [ 346.548016][ T427] ? delete_node+0x759/0x7b0 [ 346.552584][ T427] ? __kasan_check_write+0x14/0x20 [ 346.557672][ T427] ? idr_replace+0x1c4/0x230 [ 346.562242][ T427] ? idr_get_next+0x4b0/0x4b0 [ 346.566894][ T427] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 346.571893][ T427] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 346.577078][ T427] css_populate_dir+0x137/0x370 [ 346.581906][ T427] cgroup_apply_control_enable+0x8b9/0x12f0 [ 346.587777][ T427] cgroup_apply_control+0x93/0x710 [ 346.592870][ T427] ? css_next_child+0x160/0x160 [ 346.597699][ T427] ? release_task_stack+0x4c2/0x660 [ 346.602884][ T427] ? io_schedule+0x120/0x120 [ 346.607468][ T427] ? kernfs_fop_write_iter+0x15e/0x410 [ 346.612921][ T427] ? __kasan_check_write+0x14/0x20 [ 346.618016][ T427] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 346.623370][ T427] cgroup_subtree_control_write+0xd19/0x1310 [ 346.629353][ T427] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 346.635317][ T427] ? __kasan_check_write+0x14/0x20 [ 346.640409][ T427] ? _copy_from_iter+0x3fb/0xd60 [ 346.645322][ T427] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 346.651282][ T427] cgroup_file_write+0x28e/0x590 [ 346.656200][ T427] ? cgroup_seqfile_stop+0xc0/0xc0 [ 346.661288][ T427] ? mutex_lock+0xa6/0x110 [ 346.665696][ T427] ? mutex_trylock+0xb0/0xb0 [ 346.670281][ T427] ? __kasan_check_write+0x14/0x20 [ 346.675372][ T427] kernfs_fop_write_iter+0x2d0/0x410 [ 346.680634][ T427] ? cgroup_seqfile_stop+0xc0/0xc0 [ 346.685723][ T427] vfs_write+0xc1c/0xf40 [ 346.689945][ T427] ? kernel_write+0x3c0/0x3c0 [ 346.694605][ T427] ? mutex_trylock+0xb0/0xb0 [ 346.699177][ T427] ? __fdget_pos+0x26d/0x310 [ 346.703753][ T427] ? ksys_write+0x77/0x2c0 [ 346.708169][ T427] ksys_write+0x198/0x2c0 [ 346.712501][ T427] ? __ia32_sys_read+0x90/0x90 [ 346.717243][ T427] ? debug_smp_processor_id+0x17/0x20 [ 346.722594][ T427] __x64_sys_write+0x7b/0x90 [ 346.727162][ T427] do_syscall_64+0x34/0x70 [ 346.731588][ T427] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 346.737479][ T427] RIP: 0033:0x7f5223098259 [ 346.742045][ T427] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 346.761639][ T427] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 346.770052][ T427] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 346.778002][ T427] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 346.785952][ T427] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 346.793902][ T427] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 346.801939][ T427] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 346.810049][ T427] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 346.857341][ T433] FAULT_INJECTION: forcing a failure. [ 346.857341][ T433] name failslab, interval 1, probability 0, space 0, times 0 [ 346.870015][ T433] CPU: 0 PID: 433 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 346.881624][ T433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 346.891661][ T433] Call Trace: [ 346.895032][ T433] dump_stack_lvl+0x1e2/0x24b [ 346.899695][ T433] ? bfq_pos_tree_add_move+0x43e/0x43e [ 346.905136][ T433] dump_stack+0x15/0x17 [ 346.909281][ T433] should_fail+0x3c0/0x510 [ 346.913685][ T433] ? pids_css_alloc+0x4e/0x120 [ 346.918436][ T433] __should_failslab+0x9f/0xe0 [ 346.923306][ T433] should_failslab+0x9/0x20 [ 346.927807][ T433] kmem_cache_alloc_trace+0x3a/0x330 [ 346.933074][ T433] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 346.938254][ T433] pids_css_alloc+0x4e/0x120 [ 346.942830][ T433] cgroup_apply_control_enable+0x350/0x12f0 [ 346.948709][ T433] cgroup_apply_control+0x93/0x710 [ 346.953807][ T433] ? css_next_child+0x160/0x160 [ 346.958643][ T433] ? io_schedule+0x120/0x120 [ 346.963218][ T433] ? __kasan_check_write+0x14/0x20 [ 346.968313][ T433] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 346.973585][ T433] cgroup_subtree_control_write+0xd19/0x1310 [ 346.979555][ T433] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 346.985515][ T433] ? __kasan_check_write+0x14/0x20 [ 346.990615][ T433] ? _copy_from_iter+0x3fb/0xd60 [ 346.995534][ T433] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 347.001497][ T433] cgroup_file_write+0x28e/0x590 [ 347.006423][ T433] ? cgroup_seqfile_stop+0xc0/0xc0 [ 347.011519][ T433] ? mutex_lock+0xa6/0x110 [ 347.015924][ T433] ? mutex_trylock+0xb0/0xb0 [ 347.020498][ T433] ? __kasan_check_write+0x14/0x20 [ 347.025593][ T433] kernfs_fop_write_iter+0x2d0/0x410 [ 347.030863][ T433] ? cgroup_seqfile_stop+0xc0/0xc0 [ 347.035955][ T433] vfs_write+0xc1c/0xf40 [ 347.040179][ T433] ? kernel_write+0x3c0/0x3c0 [ 347.044837][ T433] ? mutex_trylock+0xb0/0xb0 [ 347.049500][ T433] ? __fdget_pos+0x26d/0x310 [ 347.054071][ T433] ? ksys_write+0x77/0x2c0 [ 347.058473][ T433] ksys_write+0x198/0x2c0 [ 347.062786][ T433] ? __ia32_sys_read+0x90/0x90 [ 347.067532][ T433] ? debug_smp_processor_id+0x17/0x20 [ 347.072887][ T433] __x64_sys_write+0x7b/0x90 [ 347.077460][ T433] do_syscall_64+0x34/0x70 [ 347.081859][ T433] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 347.087733][ T433] RIP: 0033:0x7f5223098259 [ 347.092135][ T433] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 347.111731][ T433] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 347.120133][ T433] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 347.128089][ T433] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 347.136051][ T433] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 347.144035][ T433] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 347.151995][ T433] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 347.163187][ T374] ------------[ cut here ]------------ [ 347.168736][ T374] WARNING: CPU: 0 PID: 374 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 347.177678][ T374] Modules linked in: [ 347.181562][ T374] CPU: 0 PID: 374 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 347.193201][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 347.203277][ T374] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 347.208914][ T374] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 347.228532][ T374] RSP: 0018:ffffc90000b77ba0 EFLAGS: 00010293 [ 347.234597][ T374] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a4f00 [ 347.242584][ T374] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 347.250590][ T374] RBP: ffffc90000b77c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 347.258654][ T374] R10: fffff5200016ef65 R11: 1ffff9200016ef64 R12: dffffc0000000000 [ 347.266743][ T374] R13: ffff8881049b2e00 R14: ffffc90000b77c00 R15: 1ffff9200016ef7c [ 347.274700][ T374] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 347.283739][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 347.290427][ T374] CR2: 000055555703b738 CR3: 0000000106fe2000 CR4: 00000000003506b0 [ 347.298410][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 347.306370][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 347.314446][ T374] Call Trace: [ 347.317741][ T374] ? io_schedule+0x120/0x120 [ 347.322315][ T374] ? vfs_submount+0xb0/0xb0 [ 347.326824][ T374] ? shrink_dentry_list+0x4ec/0x500 [ 347.332017][ T374] ? __kasan_check_write+0x14/0x20 [ 347.337149][ T374] namespace_unlock+0x448/0x4f0 [ 347.341992][ T374] ? umount_tree+0xf50/0xf50 [ 347.346568][ T374] ? __detach_mounts+0x670/0x670 [ 347.351543][ T374] ? selinux_umount+0xf0/0x130 [ 347.356307][ T374] ? security_sb_umount+0x9d/0xb0 [ 347.361353][ T374] path_umount+0xf03/0xfb0 [ 347.365766][ T374] ? namespace_unlock+0x4f0/0x4f0 [ 347.370819][ T374] ? user_path_at_empty+0x40/0x50 [ 347.375832][ T374] __x64_sys_umount+0x122/0x170 [ 347.380702][ T374] ? path_umount+0xfb0/0xfb0 [ 347.385286][ T374] ? debug_smp_processor_id+0x17/0x20 [ 347.390676][ T374] do_syscall_64+0x34/0x70 [ 347.395086][ T374] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 347.401001][ T374] RIP: 0033:0x7f5223099667 [ 347.405404][ T374] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 347.425036][ T374] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 347.433468][ T374] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 347.441451][ T374] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 347.449423][ T374] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 347.457396][ T374] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 347.465354][ T374] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 347.473336][ T374] ---[ end trace 049b4861796392e6 ]--- [ 347.479001][ T374] ------------[ cut here ]------------ [ 347.484495][ T374] WARNING: CPU: 1 PID: 374 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 347.493504][ T374] Modules linked in: [ 347.497018][ T403] FAULT_INJECTION: forcing a failure. [ 347.497018][ T403] name failslab, interval 1, probability 0, space 0, times 0 [ 347.497458][ T374] CPU: 1 PID: 374 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 347.510349][ T403] CPU: 0 PID: 403 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 347.521619][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 347.533285][ T403] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 347.533290][ T403] Call Trace: [ 347.533306][ T403] dump_stack_lvl+0x1e2/0x24b [ 347.533314][ T403] ? panic+0x7d7/0x7d7 [ 347.533331][ T403] ? bfq_pos_tree_add_move+0x43e/0x43e [ 347.543480][ T374] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 347.553493][ T403] ? find_next_bit+0xd6/0x120 [ 347.553502][ T403] ? cpumask_next+0x11/0x30 [ 347.553518][ T403] dump_stack+0x15/0x17 [ 347.556791][ T374] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 347.561435][ T403] should_fail+0x3c0/0x510 [ 347.565476][ T374] RSP: 0018:ffffc90000b77ca0 EFLAGS: 00010293 [ 347.571000][ T403] ? percpu_ref_init+0xd0/0x330 [ 347.571010][ T403] __should_failslab+0x9f/0xe0 [ 347.571026][ T403] should_failslab+0x9/0x20 [ 347.576636][ T374] [ 347.581287][ T403] kmem_cache_alloc_trace+0x3a/0x330 [ 347.585858][ T374] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff8881073a4f00 [ 347.589986][ T403] percpu_ref_init+0xd0/0x330 [ 347.589996][ T403] ? cgroup_setup_root+0xea0/0xea0 [ 347.590014][ T403] cgroup_apply_control_enable+0x3a2/0x12f0 [ 347.609608][ T374] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 347.613999][ T403] cgroup_apply_control+0x93/0x710 [ 347.620063][ T374] RBP: ffffc90000b77d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 347.624879][ T403] ? css_next_child+0x160/0x160 [ 347.629622][ T374] R10: fffff5200016ef85 R11: 1ffff9200016ef84 R12: dffffc0000000000 [ 347.634093][ T403] ? io_schedule+0x120/0x120 [ 347.636397][ T374] R13: ffff8881049b2e00 R14: ffffc90000b77d00 R15: 1ffff9200016ef9c [ 347.641651][ T403] ? kernfs_fop_write_iter+0x15e/0x410 [ 347.641662][ T403] ? __kasan_check_write+0x14/0x20 [ 347.641678][ T403] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 347.649645][ T374] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 347.654287][ T403] cgroup_subtree_control_write+0xd19/0x1310 [ 347.659377][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 347.665239][ T403] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 347.673196][ T374] CR2: 00005555570313b8 CR3: 0000000106fe2000 CR4: 00000000003506a0 [ 347.678267][ T403] ? __kasan_check_write+0x14/0x20 [ 347.678285][ T403] ? _copy_from_iter+0x3fb/0xd60 [ 347.686231][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 347.691069][ T403] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 347.691079][ T403] cgroup_file_write+0x28e/0x590 [ 347.691088][ T403] ? cgroup_seqfile_stop+0xc0/0xc0 [ 347.691108][ T403] ? mutex_lock+0xa6/0x110 [ 347.699082][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 347.703641][ T403] ? mutex_trylock+0xb0/0xb0 [ 347.711610][ T374] Call Trace: [ 347.717037][ T403] ? __kasan_check_write+0x14/0x20 [ 347.717055][ T403] kernfs_fop_write_iter+0x2d0/0x410 [ 347.722148][ T374] ? lockref_get_or_lock+0x340/0x340 [ 347.727402][ T403] ? cgroup_seqfile_stop+0xc0/0xc0 [ 347.727411][ T403] vfs_write+0xc1c/0xf40 [ 347.727427][ T403] ? kernel_write+0x3c0/0x3c0 [ 347.736344][ T374] ? umount_tree+0xf50/0xf50 [ 347.742290][ T403] ? mutex_trylock+0xb0/0xb0 [ 347.742300][ T403] ? __fdget_pos+0x26d/0x310 [ 347.742316][ T403] ? ksys_write+0x77/0x2c0 [ 347.748889][ T374] ? vfs_submount+0xb0/0xb0 [ 347.754837][ T403] ksys_write+0x198/0x2c0 [ 347.762804][ T374] ? dput+0x2b6/0x320 [ 347.767875][ T403] ? __ia32_sys_read+0x90/0x90 [ 347.767895][ T403] ? debug_smp_processor_id+0x17/0x20 [ 347.772811][ T374] path_umount+0x1fe/0xfb0 [ 347.780759][ T403] __x64_sys_write+0x7b/0x90 [ 347.780770][ T403] do_syscall_64+0x34/0x70 [ 347.780787][ T403] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 347.786764][ T374] ? namespace_unlock+0x4f0/0x4f0 [ 347.791661][ T403] RIP: 0033:0x7f5223098259 [ 347.796798][ T374] ? user_path_at_empty+0x40/0x50 [ 347.801156][ T403] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 347.809123][ T374] __x64_sys_umount+0x122/0x170 [ 347.813670][ T403] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 [ 347.816975][ T374] ? path_umount+0xfb0/0xfb0 [ 347.822051][ T403] ORIG_RAX: 0000000000000001 [ 347.827363][ T374] ? debug_smp_processor_id+0x17/0x20 [ 347.832584][ T403] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 347.837689][ T374] do_syscall_64+0x34/0x70 [ 347.841895][ T403] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 347.846564][ T374] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 347.851113][ T403] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 347.851119][ T403] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 347.851124][ T403] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 348.016566][ T374] RIP: 0033:0x7f5223099667 [ 348.020990][ T374] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 348.040595][ T374] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 348.049006][ T374] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 executing program [ 348.056978][ T374] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 348.064934][ T374] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 348.072926][ T374] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 348.080902][ T374] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 348.088874][ T374] ---[ end trace 049b4861796392e7 ]--- [ 348.095230][ T23] kauditd_printk_skb: 6 callbacks suppressed executing program [ 348.095240][ T23] audit: type=1400 audit(1649430802.570:89): avc: denied { remove_name } for pid=142 comm="syslogd" name="messages" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 348.123663][ T23] audit: type=1400 audit(1649430802.570:90): avc: denied { rename } for pid=142 comm="syslogd" name="messages" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 348.147811][ T421] FAULT_INJECTION: forcing a failure. [ 348.147811][ T421] name failslab, interval 1, probability 0, space 0, times 0 [ 348.160939][ T421] CPU: 0 PID: 421 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 348.172570][ T421] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 348.182607][ T421] Call Trace: [ 348.185882][ T421] dump_stack_lvl+0x1e2/0x24b [ 348.190540][ T421] ? bfq_pos_tree_add_move+0x43e/0x43e [ 348.195979][ T421] dump_stack+0x15/0x17 [ 348.200125][ T421] should_fail+0x3c0/0x510 [ 348.204533][ T421] ? pids_css_alloc+0x4e/0x120 [ 348.209298][ T421] __should_failslab+0x9f/0xe0 [ 348.214052][ T421] should_failslab+0x9/0x20 [ 348.218544][ T421] kmem_cache_alloc_trace+0x3a/0x330 [ 348.223808][ T421] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 348.229009][ T421] pids_css_alloc+0x4e/0x120 [ 348.233581][ T421] cgroup_apply_control_enable+0x350/0x12f0 [ 348.239469][ T421] cgroup_apply_control+0x93/0x710 [ 348.244564][ T421] ? css_next_child+0x160/0x160 [ 348.249400][ T421] ? release_task_stack+0x529/0x660 [ 348.254589][ T421] ? io_schedule+0x120/0x120 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 348.259172][ T421] ? kernfs_fop_write_iter+0x15e/0x410 [ 348.264619][ T421] ? __kasan_check_write+0x14/0x20 [ 348.269712][ T421] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 348.274978][ T421] cgroup_subtree_control_write+0xd19/0x1310 [ 348.280937][ T421] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 348.286916][ T421] ? __kasan_check_write+0x14/0x20 [ 348.292013][ T421] ? _copy_from_iter+0x3fb/0xd60 [ 348.296934][ T421] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 348.302897][ T421] cgroup_file_write+0x28e/0x590 [ 348.307823][ T421] ? cgroup_seqfile_stop+0xc0/0xc0 [ 348.312919][ T421] ? mutex_lock+0xa6/0x110 [ 348.317313][ T421] ? mutex_trylock+0xb0/0xb0 [ 348.321883][ T421] ? __kasan_check_write+0x14/0x20 [ 348.326995][ T421] kernfs_fop_write_iter+0x2d0/0x410 [ 348.332258][ T421] ? cgroup_seqfile_stop+0xc0/0xc0 [ 348.337348][ T421] vfs_write+0xc1c/0xf40 [ 348.341577][ T421] ? kernel_write+0x3c0/0x3c0 [ 348.346238][ T421] ? mutex_trylock+0xb0/0xb0 [ 348.350810][ T421] ? __fdget_pos+0x26d/0x310 [ 348.355376][ T421] ? ksys_write+0x77/0x2c0 [ 348.359769][ T421] ksys_write+0x198/0x2c0 [ 348.364084][ T421] ? __ia32_sys_read+0x90/0x90 [ 348.368829][ T421] ? debug_smp_processor_id+0x17/0x20 [ 348.374185][ T421] __x64_sys_write+0x7b/0x90 [ 348.378752][ T421] do_syscall_64+0x34/0x70 [ 348.383149][ T421] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 348.389042][ T421] RIP: 0033:0x7f5223098259 [ 348.393436][ T421] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 executing program executing program [ 348.413027][ T421] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 348.421445][ T421] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 348.429400][ T421] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 348.437353][ T421] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 348.445303][ T421] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 348.453348][ T421] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 348.487177][ T424] FAULT_INJECTION: forcing a failure. [ 348.487177][ T424] name failslab, interval 1, probability 0, space 0, times 0 [ 348.499853][ T424] CPU: 0 PID: 424 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 348.511457][ T424] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 348.521501][ T424] Call Trace: [ 348.524775][ T424] dump_stack_lvl+0x1e2/0x24b [ 348.529433][ T424] ? bfq_pos_tree_add_move+0x43e/0x43e write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 348.534871][ T424] ? selinux_kernfs_init_security+0x1a8/0x760 [ 348.540919][ T424] dump_stack+0x15/0x17 [ 348.545058][ T424] should_fail+0x3c0/0x510 [ 348.550061][ T424] ? __kernfs_new_node+0x99/0x6e0 [ 348.555065][ T424] __should_failslab+0x9f/0xe0 [ 348.559813][ T424] should_failslab+0x9/0x20 [ 348.564295][ T424] __kmalloc_track_caller+0x5f/0x350 [ 348.569562][ T424] kstrdup_const+0x55/0x90 [ 348.573965][ T424] __kernfs_new_node+0x99/0x6e0 [ 348.578825][ T424] ? is_module_text_address+0xe1/0x140 [ 348.584270][ T424] ? kernfs_new_node+0x170/0x170 [ 348.589205][ T424] ? ptr_to_hashval+0x60/0x60 [ 348.593966][ T424] ? arch_stack_walk+0xf8/0x140 [ 348.598801][ T424] ? snprintf+0xd6/0x120 [ 348.603025][ T424] kernfs_new_node+0x97/0x170 [ 348.607682][ T424] __kernfs_create_file+0x4a/0x270 [ 348.612778][ T424] cgroup_addrm_files+0xab8/0xfe0 [ 348.617786][ T424] ? ____kasan_kmalloc+0xdc/0x110 [ 348.622790][ T424] ? __kasan_kmalloc+0x9/0x10 [ 348.627447][ T424] ? kmem_cache_alloc_trace+0x1dd/0x330 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 348.632981][ T424] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 348.639116][ T424] ? delete_node+0x759/0x7b0 [ 348.643697][ T424] ? __kasan_check_read+0x11/0x20 [ 348.648833][ T424] ? delete_node+0x759/0x7b0 [ 348.653412][ T424] ? __kasan_check_write+0x14/0x20 [ 348.658511][ T424] ? idr_replace+0x1c4/0x230 [ 348.663082][ T424] ? idr_get_next+0x4b0/0x4b0 [ 348.667736][ T424] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 348.672742][ T424] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 348.677923][ T424] css_populate_dir+0x137/0x370 [ 348.682784][ T424] cgroup_apply_control_enable+0x8b9/0x12f0 [ 348.688693][ T424] cgroup_apply_control+0x93/0x710 [ 348.693893][ T424] ? css_next_child+0x160/0x160 [ 348.698828][ T424] ? release_task_stack+0x529/0x660 [ 348.704010][ T424] ? io_schedule+0x120/0x120 [ 348.708592][ T424] ? kernfs_fop_write_iter+0x15e/0x410 [ 348.714048][ T424] ? __kasan_check_write+0x14/0x20 [ 348.719595][ T424] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 348.725139][ T424] cgroup_subtree_control_write+0xd19/0x1310 [ 348.731118][ T424] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 348.737085][ T424] ? __kasan_check_write+0x14/0x20 [ 348.742177][ T424] ? _copy_from_iter+0x3fb/0xd60 [ 348.747096][ T424] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 348.753062][ T424] cgroup_file_write+0x28e/0x590 [ 348.758160][ T424] ? cgroup_seqfile_stop+0xc0/0xc0 [ 348.763258][ T424] ? mutex_lock+0xa6/0x110 [ 348.767650][ T424] ? mutex_trylock+0xb0/0xb0 [ 348.772220][ T424] ? __kasan_check_write+0x14/0x20 [ 348.777434][ T424] kernfs_fop_write_iter+0x2d0/0x410 [ 348.782788][ T424] ? cgroup_seqfile_stop+0xc0/0xc0 [ 348.787880][ T424] vfs_write+0xc1c/0xf40 [ 348.792134][ T424] ? kernel_write+0x3c0/0x3c0 [ 348.796800][ T424] ? mutex_trylock+0xb0/0xb0 [ 348.801367][ T424] ? __fdget_pos+0x26d/0x310 [ 348.805934][ T424] ? ksys_write+0x77/0x2c0 [ 348.810329][ T424] ksys_write+0x198/0x2c0 [ 348.814900][ T424] ? __ia32_sys_read+0x90/0x90 [ 348.819652][ T424] ? debug_smp_processor_id+0x17/0x20 [ 348.825007][ T424] __x64_sys_write+0x7b/0x90 [ 348.829585][ T424] do_syscall_64+0x34/0x70 [ 348.833982][ T424] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 348.839853][ T424] RIP: 0033:0x7f5223098259 [ 348.844251][ T424] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 348.863836][ T424] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 348.872491][ T424] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 348.880441][ T424] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 348.888477][ T424] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 348.896428][ T424] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 348.904414][ T424] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 348.913226][ T424] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 348.937130][ T444] FAULT_INJECTION: forcing a failure. [ 348.937130][ T444] name failslab, interval 1, probability 0, space 0, times 0 [ 348.949886][ T444] CPU: 1 PID: 444 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 348.961502][ T444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 348.971656][ T444] Call Trace: [ 348.974936][ T444] dump_stack_lvl+0x1e2/0x24b [ 348.979598][ T444] ? panic+0x7d7/0x7d7 [ 348.983653][ T444] ? bfq_pos_tree_add_move+0x43e/0x43e [ 348.989091][ T444] ? find_next_bit+0xd6/0x120 [ 348.993751][ T444] ? cpumask_next+0x11/0x30 [ 348.998237][ T444] dump_stack+0x15/0x17 [ 349.002374][ T444] should_fail+0x3c0/0x510 [ 349.006786][ T444] ? percpu_ref_init+0xd0/0x330 [ 349.011629][ T444] __should_failslab+0x9f/0xe0 [ 349.016379][ T444] should_failslab+0x9/0x20 [ 349.020875][ T444] kmem_cache_alloc_trace+0x3a/0x330 [ 349.026159][ T444] percpu_ref_init+0xd0/0x330 [ 349.030844][ T444] ? cgroup_setup_root+0xea0/0xea0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 349.035942][ T444] cgroup_apply_control_enable+0x3a2/0x12f0 [ 349.041843][ T444] cgroup_apply_control+0x93/0x710 [ 349.046972][ T444] ? css_next_child+0x160/0x160 [ 349.051800][ T444] ? stack_trace_save+0x12d/0x1f0 [ 349.056813][ T444] ? io_schedule+0x120/0x120 [ 349.061381][ T444] ? kernfs_fop_write_iter+0x15e/0x410 [ 349.066819][ T444] ? __kasan_check_write+0x14/0x20 [ 349.071989][ T444] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 349.077357][ T444] cgroup_subtree_control_write+0xd19/0x1310 [ 349.083329][ T444] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 349.089296][ T444] ? __kasan_check_write+0x14/0x20 [ 349.094397][ T444] ? _copy_from_iter+0x3fb/0xd60 [ 349.099316][ T444] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 349.105306][ T444] cgroup_file_write+0x28e/0x590 [ 349.110226][ T444] ? cgroup_seqfile_stop+0xc0/0xc0 [ 349.115337][ T444] ? mutex_lock+0xa6/0x110 [ 349.119757][ T444] ? mutex_trylock+0xb0/0xb0 [ 349.124331][ T444] ? __kasan_check_write+0x14/0x20 [ 349.129421][ T444] kernfs_fop_write_iter+0x2d0/0x410 [ 349.134693][ T444] ? cgroup_seqfile_stop+0xc0/0xc0 [ 349.139795][ T444] vfs_write+0xc1c/0xf40 [ 349.144026][ T444] ? slab_free_freelist_hook+0xcc/0x1a0 [ 349.149567][ T444] ? kernel_write+0x3c0/0x3c0 [ 349.154225][ T444] ? mutex_trylock+0xb0/0xb0 [ 349.159058][ T444] ? __fdget_pos+0x26d/0x310 [ 349.163627][ T444] ? ksys_write+0x77/0x2c0 [ 349.168022][ T444] ksys_write+0x198/0x2c0 [ 349.172332][ T444] ? __ia32_sys_read+0x90/0x90 [ 349.177079][ T444] ? debug_smp_processor_id+0x17/0x20 [ 349.182432][ T444] __x64_sys_write+0x7b/0x90 [ 349.187003][ T444] do_syscall_64+0x34/0x70 [ 349.191419][ T444] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 349.197289][ T444] RIP: 0033:0x7f5223098259 [ 349.201798][ T444] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 349.221384][ T444] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 349.229778][ T444] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 executing program [ 349.237729][ T444] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 349.245769][ T444] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 349.253726][ T444] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 349.261775][ T444] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 349.317311][ T447] FAULT_INJECTION: forcing a failure. [ 349.317311][ T447] name failslab, interval 1, probability 0, space 0, times 0 [ 349.329989][ T447] CPU: 1 PID: 447 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 349.341592][ T447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 349.351651][ T447] Call Trace: [ 349.354929][ T447] dump_stack_lvl+0x1e2/0x24b [ 349.359587][ T447] ? panic+0x7d7/0x7d7 [ 349.363657][ T447] ? bfq_pos_tree_add_move+0x43e/0x43e [ 349.369096][ T447] ? find_next_bit+0xd6/0x120 [ 349.373755][ T447] ? cpumask_next+0x11/0x30 [ 349.378260][ T447] dump_stack+0x15/0x17 [ 349.382397][ T447] should_fail+0x3c0/0x510 [ 349.386800][ T447] ? percpu_ref_init+0xd0/0x330 [ 349.391664][ T447] __should_failslab+0x9f/0xe0 [ 349.396439][ T447] should_failslab+0x9/0x20 [ 349.400924][ T447] kmem_cache_alloc_trace+0x3a/0x330 [ 349.406217][ T447] percpu_ref_init+0xd0/0x330 [ 349.410877][ T447] ? cgroup_setup_root+0xea0/0xea0 [ 349.415973][ T447] cgroup_apply_control_enable+0x3a2/0x12f0 [ 349.421849][ T447] cgroup_apply_control+0x93/0x710 [ 349.426940][ T447] ? css_next_child+0x160/0x160 [ 349.431771][ T447] ? io_schedule+0x120/0x120 [ 349.436342][ T447] ? __kasan_check_write+0x14/0x20 [ 349.441526][ T447] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 349.446795][ T447] cgroup_subtree_control_write+0xd19/0x1310 [ 349.452756][ T447] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 349.458832][ T447] ? __kasan_check_write+0x14/0x20 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 349.463939][ T447] ? _copy_from_iter+0x3fb/0xd60 [ 349.468874][ T447] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 349.474854][ T447] cgroup_file_write+0x28e/0x590 [ 349.479772][ T447] ? cgroup_seqfile_stop+0xc0/0xc0 [ 349.484864][ T447] ? mutex_lock+0xa6/0x110 [ 349.489400][ T447] ? mutex_trylock+0xb0/0xb0 [ 349.493977][ T447] ? __kasan_check_write+0x14/0x20 [ 349.499067][ T447] kernfs_fop_write_iter+0x2d0/0x410 [ 349.504332][ T447] ? cgroup_seqfile_stop+0xc0/0xc0 [ 349.509423][ T447] vfs_write+0xc1c/0xf40 [ 349.513645][ T447] ? kernel_write+0x3c0/0x3c0 [ 349.518300][ T447] ? mutex_trylock+0xb0/0xb0 [ 349.522871][ T447] ? __fdget_pos+0x26d/0x310 [ 349.527441][ T447] ? ksys_write+0x77/0x2c0 [ 349.531834][ T447] ksys_write+0x198/0x2c0 [ 349.536143][ T447] ? __ia32_sys_read+0x90/0x90 [ 349.540893][ T447] ? debug_smp_processor_id+0x17/0x20 [ 349.546245][ T447] __x64_sys_write+0x7b/0x90 [ 349.550819][ T447] do_syscall_64+0x34/0x70 [ 349.555225][ T447] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 349.561094][ T447] RIP: 0033:0x7f5223098259 [ 349.565490][ T447] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 349.585076][ T447] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 349.593470][ T447] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 349.601434][ T447] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 349.609400][ T447] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 executing program [ 349.617355][ T447] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 349.625307][ T447] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 349.687242][ T430] FAULT_INJECTION: forcing a failure. [ 349.687242][ T430] name failslab, interval 1, probability 0, space 0, times 0 [ 349.699982][ T430] CPU: 1 PID: 430 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 349.711613][ T430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 349.721670][ T430] Call Trace: [ 349.724963][ T430] dump_stack_lvl+0x1e2/0x24b [ 349.729620][ T430] ? panic+0x7d7/0x7d7 [ 349.733666][ T430] ? bfq_pos_tree_add_move+0x43e/0x43e [ 349.739115][ T430] ? selinux_kernfs_init_security+0x1a8/0x760 [ 349.745166][ T430] dump_stack+0x15/0x17 [ 349.749302][ T430] should_fail+0x3c0/0x510 [ 349.753705][ T430] __should_failslab+0x9f/0xe0 [ 349.758448][ T430] should_failslab+0x9/0x20 [ 349.762937][ T430] kmem_cache_alloc+0x3f/0x300 [ 349.767704][ T430] ? __kernfs_new_node+0xdb/0x6e0 [ 349.772708][ T430] __kernfs_new_node+0xdb/0x6e0 [ 349.777537][ T430] ? is_module_text_address+0xe1/0x140 [ 349.782972][ T430] ? kernfs_new_node+0x170/0x170 [ 349.787890][ T430] ? ptr_to_hashval+0x60/0x60 [ 349.792544][ T430] ? snprintf+0xd6/0x120 [ 349.796763][ T430] ? __kasan_check_write+0x14/0x20 [ 349.801864][ T430] ? mutex_unlock+0x1d/0x40 [ 349.806361][ T430] kernfs_new_node+0x97/0x170 [ 349.811020][ T430] __kernfs_create_file+0x4a/0x270 [ 349.816112][ T430] cgroup_addrm_files+0xab8/0xfe0 [ 349.821115][ T430] ? ____kasan_kmalloc+0xdc/0x110 [ 349.826115][ T430] ? __kasan_kmalloc+0x9/0x10 [ 349.830775][ T430] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 349.836305][ T430] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 349.842439][ T430] ? delete_node+0x759/0x7b0 [ 349.847011][ T430] ? __kasan_check_read+0x11/0x20 [ 349.852022][ T430] ? idr_replace+0x1c4/0x230 [ 349.856597][ T430] ? idr_get_next+0x4b0/0x4b0 [ 349.861261][ T430] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 349.866268][ T430] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 349.871456][ T430] css_populate_dir+0x137/0x370 [ 349.876296][ T430] cgroup_apply_control_enable+0x8b9/0x12f0 [ 349.882175][ T430] cgroup_apply_control+0x93/0x710 [ 349.887269][ T430] ? css_next_child+0x160/0x160 [ 349.892104][ T430] ? io_schedule+0x120/0x120 [ 349.896683][ T430] ? kernfs_fop_write_iter+0x15e/0x410 [ 349.902164][ T430] ? __kasan_check_write+0x14/0x20 [ 349.907263][ T430] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 349.912620][ T430] cgroup_subtree_control_write+0xd19/0x1310 [ 349.918584][ T430] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 349.924545][ T430] ? __kasan_check_write+0x14/0x20 [ 349.929638][ T430] ? _copy_from_iter+0x3fb/0xd60 [ 349.934699][ T430] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 349.940679][ T430] cgroup_file_write+0x28e/0x590 [ 349.945602][ T430] ? cgroup_seqfile_stop+0xc0/0xc0 [ 349.950692][ T430] ? mutex_lock+0xa6/0x110 [ 349.955096][ T430] ? mutex_trylock+0xb0/0xb0 [ 349.959666][ T430] ? __kasan_check_write+0x14/0x20 [ 349.964758][ T430] kernfs_fop_write_iter+0x2d0/0x410 [ 349.970045][ T430] ? cgroup_seqfile_stop+0xc0/0xc0 [ 349.975138][ T430] vfs_write+0xc1c/0xf40 [ 349.979365][ T430] ? kernel_write+0x3c0/0x3c0 [ 349.984055][ T430] ? mutex_trylock+0xb0/0xb0 [ 349.988716][ T430] ? __fdget_pos+0x26d/0x310 [ 349.993284][ T430] ? ksys_write+0x77/0x2c0 [ 349.997680][ T430] ksys_write+0x198/0x2c0 [ 350.001989][ T430] ? __ia32_sys_read+0x90/0x90 [ 350.006751][ T430] ? debug_smp_processor_id+0x17/0x20 [ 350.012110][ T430] __x64_sys_write+0x7b/0x90 [ 350.016689][ T430] do_syscall_64+0x34/0x70 [ 350.021183][ T430] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 350.027058][ T430] RIP: 0033:0x7f5223098259 [ 350.031460][ T430] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 350.051318][ T430] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 350.059720][ T430] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 350.069718][ T430] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 350.077671][ T430] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 executing program write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 350.085626][ T430] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 350.093670][ T430] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 350.101944][ T430] cgroup: cgroup_addrm_files: failed to add events, err=-12 [ 350.147298][ T453] FAULT_INJECTION: forcing a failure. [ 350.147298][ T453] name failslab, interval 1, probability 0, space 0, times 0 [ 350.159948][ T453] CPU: 1 PID: 453 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 350.171559][ T453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 350.181596][ T453] Call Trace: [ 350.184867][ T453] dump_stack_lvl+0x1e2/0x24b [ 350.189523][ T453] ? panic+0x7d7/0x7d7 [ 350.193572][ T453] ? bfq_pos_tree_add_move+0x43e/0x43e [ 350.199011][ T453] ? find_next_bit+0xd6/0x120 [ 350.203700][ T453] ? cpumask_next+0x11/0x30 [ 350.208286][ T453] dump_stack+0x15/0x17 [ 350.212456][ T453] should_fail+0x3c0/0x510 [ 350.216855][ T453] ? percpu_ref_init+0xd0/0x330 [ 350.221688][ T453] __should_failslab+0x9f/0xe0 [ 350.226554][ T453] should_failslab+0x9/0x20 [ 350.231043][ T453] kmem_cache_alloc_trace+0x3a/0x330 [ 350.236579][ T453] percpu_ref_init+0xd0/0x330 [ 350.241252][ T453] ? cgroup_setup_root+0xea0/0xea0 [ 350.246359][ T453] cgroup_apply_control_enable+0x3a2/0x12f0 [ 350.252236][ T453] cgroup_apply_control+0x93/0x710 [ 350.257333][ T453] ? css_next_child+0x160/0x160 [ 350.262175][ T453] ? release_task_stack+0x56a/0x660 [ 350.267361][ T453] ? io_schedule+0x120/0x120 [ 350.271943][ T453] ? kernfs_fop_write_iter+0x15e/0x410 [ 350.277402][ T453] ? __kasan_check_write+0x14/0x20 [ 350.282496][ T453] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 350.287761][ T453] cgroup_subtree_control_write+0xd19/0x1310 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 350.293726][ T453] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 350.299686][ T453] ? __kasan_check_write+0x14/0x20 [ 350.304782][ T453] ? _copy_from_iter+0x3fb/0xd60 [ 350.309709][ T453] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 350.315691][ T453] cgroup_file_write+0x28e/0x590 [ 350.320618][ T453] ? cgroup_seqfile_stop+0xc0/0xc0 [ 350.325711][ T453] ? mutex_lock+0xa6/0x110 [ 350.330108][ T453] ? mutex_trylock+0xb0/0xb0 [ 350.334705][ T453] ? __kasan_check_write+0x14/0x20 [ 350.339823][ T453] kernfs_fop_write_iter+0x2d0/0x410 [ 350.345095][ T453] ? cgroup_seqfile_stop+0xc0/0xc0 [ 350.350192][ T453] vfs_write+0xc1c/0xf40 [ 350.354414][ T453] ? kernel_write+0x3c0/0x3c0 [ 350.359075][ T453] ? mutex_trylock+0xb0/0xb0 [ 350.363650][ T453] ? __fdget_pos+0x26d/0x310 [ 350.368243][ T453] ? ksys_write+0x77/0x2c0 [ 350.372636][ T453] ksys_write+0x198/0x2c0 [ 350.376944][ T453] ? __ia32_sys_read+0x90/0x90 [ 350.381689][ T453] ? debug_smp_processor_id+0x17/0x20 [ 350.387044][ T453] __x64_sys_write+0x7b/0x90 [ 350.392077][ T453] do_syscall_64+0x34/0x70 [ 350.396473][ T453] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 350.402347][ T453] RIP: 0033:0x7f5223098259 [ 350.406746][ T453] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 350.426418][ T453] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 350.434815][ T453] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 350.442769][ T453] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 350.450730][ T453] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 350.458705][ T453] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 350.466668][ T453] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 350.477610][ T375] ------------[ cut here ]------------ [ 350.483116][ T375] WARNING: CPU: 0 PID: 375 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 350.492075][ T375] Modules linked in: [ 350.496087][ T375] CPU: 0 PID: 375 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 350.507747][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 350.517842][ T375] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 350.523458][ T375] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 350.543086][ T375] RSP: 0018:ffffc90000b87ca0 EFLAGS: 00010293 [ 350.549180][ T375] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff888106bca780 [ 350.557164][ T375] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 350.565132][ T375] RBP: ffffc90000b87d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 350.573136][ T375] R10: fffff52000170f85 R11: 1ffff92000170f84 R12: dffffc0000000000 [ 350.581111][ T375] R13: ffff8881049b3880 R14: ffffc90000b87d00 R15: 1ffff92000170f9c [ 350.589109][ T375] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 350.598483][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 350.605056][ T375] CR2: 000055555703b738 CR3: 0000000106987000 CR4: 00000000003506b0 [ 350.613055][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 350.621036][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 350.629051][ T375] Call Trace: [ 350.632422][ T375] ? lockref_get_or_lock+0x340/0x340 [ 350.637728][ T375] ? umount_tree+0xf50/0xf50 [ 350.642301][ T375] ? vfs_submount+0xb0/0xb0 [ 350.646806][ T375] ? dput+0x2b6/0x320 [ 350.650767][ T375] path_umount+0x1fe/0xfb0 [ 350.655167][ T375] ? namespace_unlock+0x4f0/0x4f0 [ 350.660190][ T375] ? user_path_at_empty+0x40/0x50 [ 350.665198][ T375] __x64_sys_umount+0x122/0x170 [ 350.670054][ T375] ? path_umount+0xfb0/0xfb0 [ 350.674643][ T375] ? debug_smp_processor_id+0x17/0x20 [ 350.680026][ T375] do_syscall_64+0x34/0x70 [ 350.684439][ T375] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 350.690347][ T375] RIP: 0033:0x7f5223099667 [ 350.694746][ T375] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 350.714355][ T375] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 350.722777][ T375] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 350.730756][ T375] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 350.738827][ T375] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 executing program [ 350.746817][ T375] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 350.754776][ T375] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 350.762760][ T375] ---[ end trace 049b4861796392e8 ]--- [ 350.787087][ T441] FAULT_INJECTION: forcing a failure. [ 350.787087][ T441] name failslab, interval 1, probability 0, space 0, times 0 [ 350.799776][ T441] CPU: 0 PID: 441 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 350.811479][ T441] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 350.821519][ T441] Call Trace: [ 350.824804][ T441] dump_stack_lvl+0x1e2/0x24b [ 350.829467][ T441] ? panic+0x7d7/0x7d7 [ 350.833528][ T441] ? bfq_pos_tree_add_move+0x43e/0x43e [ 350.838964][ T441] ? find_next_bit+0xd6/0x120 [ 350.843652][ T441] ? cpumask_next+0x11/0x30 [ 350.848146][ T441] dump_stack+0x15/0x17 [ 350.852283][ T441] should_fail+0x3c0/0x510 [ 350.856679][ T441] ? percpu_ref_init+0xd0/0x330 [ 350.861508][ T441] __should_failslab+0x9f/0xe0 [ 350.866253][ T441] should_failslab+0x9/0x20 [ 350.870746][ T441] kmem_cache_alloc_trace+0x3a/0x330 [ 350.876050][ T441] percpu_ref_init+0xd0/0x330 [ 350.880725][ T441] ? cgroup_setup_root+0xea0/0xea0 [ 350.885838][ T441] cgroup_apply_control_enable+0x3a2/0x12f0 [ 350.891736][ T441] cgroup_apply_control+0x93/0x710 [ 350.896827][ T441] ? css_next_child+0x160/0x160 [ 350.901666][ T441] ? io_schedule+0x120/0x120 [ 350.906237][ T441] ? kernfs_fop_write_iter+0x15e/0x410 [ 350.911678][ T441] ? __kasan_check_write+0x14/0x20 [ 350.916776][ T441] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 350.922045][ T441] cgroup_subtree_control_write+0xd19/0x1310 [ 350.928023][ T441] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 350.933985][ T441] ? __kasan_check_write+0x14/0x20 [ 350.939078][ T441] ? _copy_from_iter+0x3fb/0xd60 [ 350.944016][ T441] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 350.949974][ T441] cgroup_file_write+0x28e/0x590 [ 350.954903][ T441] ? cgroup_seqfile_stop+0xc0/0xc0 [ 350.960002][ T441] ? mutex_lock+0xa6/0x110 [ 350.964423][ T441] ? mutex_trylock+0xb0/0xb0 [ 350.969002][ T441] ? __kasan_check_write+0x14/0x20 [ 350.974098][ T441] kernfs_fop_write_iter+0x2d0/0x410 [ 350.979369][ T441] ? cgroup_seqfile_stop+0xc0/0xc0 [ 350.984485][ T441] vfs_write+0xc1c/0xf40 [ 350.988708][ T441] ? kernel_write+0x3c0/0x3c0 [ 350.993371][ T441] ? mutex_trylock+0xb0/0xb0 [ 350.997944][ T441] ? __fdget_pos+0x26d/0x310 [ 351.002513][ T441] ? ksys_write+0x77/0x2c0 [ 351.006909][ T441] ksys_write+0x198/0x2c0 [ 351.011240][ T441] ? __ia32_sys_read+0x90/0x90 [ 351.015987][ T441] ? debug_smp_processor_id+0x17/0x20 [ 351.021348][ T441] __x64_sys_write+0x7b/0x90 [ 351.025921][ T441] do_syscall_64+0x34/0x70 [ 351.030319][ T441] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 351.036185][ T441] RIP: 0033:0x7f5223098259 [ 351.040575][ T441] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 351.060161][ T441] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 351.068574][ T441] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 351.076548][ T441] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 351.084520][ T441] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 351.092495][ T441] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 executing program [ 351.100454][ T441] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 351.165266][ T436] FAULT_INJECTION: forcing a failure. [ 351.165266][ T436] name failslab, interval 1, probability 0, space 0, times 0 [ 351.178179][ T436] CPU: 1 PID: 436 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 351.189803][ T436] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 351.199840][ T436] Call Trace: [ 351.203117][ T436] dump_stack_lvl+0x1e2/0x24b [ 351.207790][ T436] ? panic+0x7d7/0x7d7 [ 351.211853][ T436] ? bfq_pos_tree_add_move+0x43e/0x43e [ 351.217409][ T436] ? find_next_bit+0xd6/0x120 [ 351.222076][ T436] ? cpumask_next+0x11/0x30 [ 351.226584][ T436] dump_stack+0x15/0x17 [ 351.230747][ T436] should_fail+0x3c0/0x510 [ 351.235157][ T436] ? percpu_ref_init+0xd0/0x330 [ 351.239991][ T436] __should_failslab+0x9f/0xe0 [ 351.244743][ T436] should_failslab+0x9/0x20 [ 351.249246][ T436] kmem_cache_alloc_trace+0x3a/0x330 [ 351.254514][ T436] percpu_ref_init+0xd0/0x330 [ 351.259174][ T436] ? cgroup_setup_root+0xea0/0xea0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 351.264271][ T436] cgroup_apply_control_enable+0x3a2/0x12f0 [ 351.270146][ T436] cgroup_apply_control+0x93/0x710 [ 351.275240][ T436] ? css_next_child+0x160/0x160 [ 351.280069][ T436] ? io_schedule+0x120/0x120 [ 351.284653][ T436] ? kernfs_fop_write_iter+0x15e/0x410 [ 351.290181][ T436] ? __kasan_check_write+0x14/0x20 [ 351.295283][ T436] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 351.300554][ T436] cgroup_subtree_control_write+0xd19/0x1310 [ 351.306518][ T436] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 351.312476][ T436] ? __kasan_check_write+0x14/0x20 [ 351.317568][ T436] ? _copy_from_iter+0x3fb/0xd60 [ 351.322492][ T436] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 351.328461][ T436] cgroup_file_write+0x28e/0x590 [ 351.333389][ T436] ? cgroup_seqfile_stop+0xc0/0xc0 [ 351.338474][ T436] ? mutex_lock+0xa6/0x110 [ 351.342877][ T436] ? mutex_trylock+0xb0/0xb0 [ 351.347447][ T436] ? __kasan_check_write+0x14/0x20 [ 351.352548][ T436] kernfs_fop_write_iter+0x2d0/0x410 [ 351.357818][ T436] ? cgroup_seqfile_stop+0xc0/0xc0 [ 351.362921][ T436] vfs_write+0xc1c/0xf40 [ 351.367146][ T436] ? kernel_write+0x3c0/0x3c0 [ 351.371810][ T436] ? mutex_trylock+0xb0/0xb0 [ 351.376391][ T436] ? __fdget_pos+0x26d/0x310 [ 351.380996][ T436] ? ksys_write+0x77/0x2c0 [ 351.385398][ T436] ksys_write+0x198/0x2c0 [ 351.389803][ T436] ? __ia32_sys_read+0x90/0x90 [ 351.394547][ T436] ? debug_smp_processor_id+0x17/0x20 [ 351.399905][ T436] __x64_sys_write+0x7b/0x90 [ 351.404478][ T436] do_syscall_64+0x34/0x70 [ 351.408877][ T436] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 351.414759][ T436] RIP: 0033:0x7f5223098259 [ 351.419172][ T436] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 351.438769][ T436] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 351.447250][ T436] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 351.455208][ T436] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 351.463159][ T436] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 351.471122][ T436] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 351.479079][ T436] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 351.489994][ T377] ------------[ cut here ]------------ [ 351.495496][ T377] WARNING: CPU: 0 PID: 377 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 351.504452][ T377] Modules linked in: [ 351.508431][ T377] CPU: 0 PID: 377 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 351.520145][ T377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 351.530225][ T377] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 351.535849][ T377] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 351.555499][ T377] RSP: 0018:ffffc90000bd7ba0 EFLAGS: 00010293 [ 351.561575][ T377] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff888107792780 [ 351.569555][ T377] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 351.577551][ T377] RBP: ffffc90000bd7c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 351.585512][ T377] R10: fffff5200017af65 R11: 1ffff9200017af64 R12: dffffc0000000000 [ 351.593496][ T377] R13: ffff8881049b3dc0 R14: ffffc90000bd7c00 R15: 1ffff9200017af7c [ 351.601475][ T377] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 351.610412][ T377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 351.617006][ T377] CR2: 000055555703b738 CR3: 000000011cfdb000 CR4: 00000000003506b0 [ 351.624972][ T377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 351.632951][ T377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 351.640943][ T377] Call Trace: [ 351.644227][ T377] ? io_schedule+0x120/0x120 [ 351.648824][ T377] ? vfs_submount+0xb0/0xb0 [ 351.653314][ T377] ? shrink_dentry_list+0x4ec/0x500 [ 351.658624][ T377] ? __kasan_check_write+0x14/0x20 [ 351.663728][ T377] namespace_unlock+0x448/0x4f0 [ 351.668588][ T377] ? umount_tree+0xf50/0xf50 [ 351.673164][ T377] ? __detach_mounts+0x670/0x670 [ 351.678105][ T377] ? selinux_umount+0xf0/0x130 [ 351.682855][ T377] ? security_sb_umount+0x9d/0xb0 [ 351.687888][ T377] path_umount+0xf03/0xfb0 [ 351.692291][ T377] ? namespace_unlock+0x4f0/0x4f0 [ 351.697330][ T377] ? user_path_at_empty+0x40/0x50 [ 351.702341][ T377] __x64_sys_umount+0x122/0x170 [ 351.707196][ T377] ? path_umount+0xfb0/0xfb0 [ 351.711772][ T377] ? debug_smp_processor_id+0x17/0x20 [ 351.717251][ T377] do_syscall_64+0x34/0x70 [ 351.721664][ T377] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 351.727557][ T377] RIP: 0033:0x7f5223099667 [ 351.731960][ T377] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 351.751568][ T377] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 351.759992][ T377] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 351.767970][ T377] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 351.775930][ T377] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 351.783997][ T377] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 351.791977][ T377] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 351.799967][ T377] ---[ end trace 049b4861796392e9 ]--- [ 351.805495][ T377] ------------[ cut here ]------------ [ 351.805918][ T450] FAULT_INJECTION: forcing a failure. [ 351.805918][ T450] name failslab, interval 1, probability 0, space 0, times 0 [ 351.811130][ T377] WARNING: CPU: 1 PID: 377 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 351.832642][ T377] Modules linked in: [ 351.836523][ T377] CPU: 1 PID: 377 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 351.848158][ T377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 351.858223][ T377] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 351.863851][ T377] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 351.883500][ T377] RSP: 0018:ffffc90000bd7ca0 EFLAGS: 00010293 [ 351.889563][ T377] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff888107792780 [ 351.897527][ T377] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 351.905494][ T377] RBP: ffffc90000bd7d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 351.913482][ T377] R10: fffff5200017af85 R11: 1ffff9200017af84 R12: dffffc0000000000 [ 351.921446][ T377] R13: ffff8881049b3dc0 R14: ffffc90000bd7d00 R15: 1ffff9200017af9c [ 351.929407][ T377] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 351.938434][ T377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 351.945005][ T377] CR2: 00007f522301afc8 CR3: 000000011cfdb000 CR4: 00000000003506a0 [ 351.952989][ T377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 351.960978][ T377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 351.968945][ T377] Call Trace: [ 351.972224][ T377] ? lockref_get_or_lock+0x340/0x340 [ 351.977501][ T377] ? umount_tree+0xf50/0xf50 [ 351.982067][ T377] ? vfs_submount+0xb0/0xb0 [ 351.986566][ T377] ? dput+0x2b6/0x320 [ 351.990554][ T377] path_umount+0x1fe/0xfb0 [ 351.994954][ T377] ? namespace_unlock+0x4f0/0x4f0 [ 352.000032][ T377] ? user_path_at_empty+0x40/0x50 [ 352.005040][ T377] __x64_sys_umount+0x122/0x170 [ 352.009883][ T377] ? path_umount+0xfb0/0xfb0 [ 352.014627][ T377] ? debug_smp_processor_id+0x17/0x20 [ 352.019998][ T377] do_syscall_64+0x34/0x70 [ 352.024414][ T377] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 352.030324][ T377] RIP: 0033:0x7f5223099667 [ 352.034716][ T377] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 352.054316][ T377] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 352.062719][ T377] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 352.070683][ T377] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 352.078646][ T377] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 352.086659][ T377] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 352.094618][ T377] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 352.102583][ T377] ---[ end trace 049b4861796392ea ]--- [ 352.108059][ T450] CPU: 1 PID: 450 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 352.119665][ T450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 352.129702][ T450] Call Trace: [ 352.132980][ T450] dump_stack_lvl+0x1e2/0x24b [ 352.137638][ T450] ? bfq_pos_tree_add_move+0x43e/0x43e [ 352.143078][ T450] dump_stack+0x15/0x17 [ 352.147216][ T450] should_fail+0x3c0/0x510 [ 352.151615][ T450] ? pids_css_alloc+0x4e/0x120 [ 352.156364][ T450] __should_failslab+0x9f/0xe0 [ 352.161117][ T450] should_failslab+0x9/0x20 [ 352.165606][ T450] kmem_cache_alloc_trace+0x3a/0x330 [ 352.170872][ T450] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 352.176062][ T450] pids_css_alloc+0x4e/0x120 [ 352.180637][ T450] cgroup_apply_control_enable+0x350/0x12f0 [ 352.186517][ T450] cgroup_apply_control+0x93/0x710 [ 352.191615][ T450] ? css_next_child+0x160/0x160 [ 352.196450][ T450] ? release_task_stack+0x4c2/0x660 [ 352.201631][ T450] ? io_schedule+0x120/0x120 [ 352.206205][ T450] ? kernfs_fop_write_iter+0x15e/0x410 [ 352.211649][ T450] ? __kasan_check_write+0x14/0x20 [ 352.216744][ T450] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 352.222017][ T450] cgroup_subtree_control_write+0xd19/0x1310 [ 352.227981][ T450] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 352.233948][ T450] ? __kasan_check_write+0x14/0x20 [ 352.239054][ T450] ? _copy_from_iter+0x3fb/0xd60 [ 352.243982][ T450] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 352.249947][ T450] cgroup_file_write+0x28e/0x590 [ 352.254875][ T450] ? cgroup_seqfile_stop+0xc0/0xc0 [ 352.259977][ T450] ? mutex_lock+0xa6/0x110 [ 352.264370][ T450] ? mutex_trylock+0xb0/0xb0 [ 352.268956][ T450] ? __kasan_check_write+0x14/0x20 [ 352.274051][ T450] kernfs_fop_write_iter+0x2d0/0x410 [ 352.279326][ T450] ? cgroup_seqfile_stop+0xc0/0xc0 [ 352.284426][ T450] vfs_write+0xc1c/0xf40 [ 352.288662][ T450] ? kernel_write+0x3c0/0x3c0 [ 352.293331][ T450] ? mutex_trylock+0xb0/0xb0 [ 352.297911][ T450] ? __fdget_pos+0x26d/0x310 [ 352.302487][ T450] ? ksys_write+0x77/0x2c0 [ 352.306897][ T450] ksys_write+0x198/0x2c0 [ 352.311208][ T450] ? __ia32_sys_read+0x90/0x90 [ 352.315954][ T450] ? debug_smp_processor_id+0x17/0x20 [ 352.321307][ T450] __x64_sys_write+0x7b/0x90 [ 352.325886][ T450] do_syscall_64+0x34/0x70 [ 352.330334][ T450] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 352.336206][ T450] RIP: 0033:0x7f5223098259 [ 352.340609][ T450] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 352.360201][ T450] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 executing program executing program [ 352.368607][ T450] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 352.376738][ T450] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 352.384696][ T450] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 352.392657][ T450] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 352.400618][ T450] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 352.457321][ T458] FAULT_INJECTION: forcing a failure. [ 352.457321][ T458] name failslab, interval 1, probability 0, space 0, times 0 [ 352.469970][ T458] CPU: 0 PID: 458 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 352.481582][ T458] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 352.491617][ T458] Call Trace: [ 352.494887][ T458] dump_stack_lvl+0x1e2/0x24b [ 352.499538][ T458] ? panic+0x7d7/0x7d7 [ 352.503580][ T458] ? bfq_pos_tree_add_move+0x43e/0x43e [ 352.509015][ T458] ? find_next_bit+0xd6/0x120 [ 352.513666][ T458] ? cpumask_next+0x11/0x30 [ 352.518151][ T458] dump_stack+0x15/0x17 [ 352.522287][ T458] should_fail+0x3c0/0x510 [ 352.526688][ T458] ? percpu_ref_init+0xd0/0x330 [ 352.531516][ T458] __should_failslab+0x9f/0xe0 [ 352.536259][ T458] should_failslab+0x9/0x20 [ 352.540741][ T458] kmem_cache_alloc_trace+0x3a/0x330 [ 352.546017][ T458] percpu_ref_init+0xd0/0x330 [ 352.550685][ T458] ? cgroup_setup_root+0xea0/0xea0 [ 352.555774][ T458] cgroup_apply_control_enable+0x3a2/0x12f0 [ 352.561651][ T458] cgroup_apply_control+0x93/0x710 [ 352.566838][ T458] ? css_next_child+0x160/0x160 [ 352.571672][ T458] ? stack_trace_save+0x12d/0x1f0 [ 352.576684][ T458] ? io_schedule+0x120/0x120 [ 352.581255][ T458] ? kernfs_fop_write_iter+0x15e/0x410 [ 352.586691][ T458] ? __kasan_check_write+0x14/0x20 [ 352.591796][ T458] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 352.597061][ T458] cgroup_subtree_control_write+0xd19/0x1310 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 352.603033][ T458] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 352.609284][ T458] ? __kasan_check_write+0x14/0x20 [ 352.614373][ T458] ? _copy_from_iter+0x3fb/0xd60 [ 352.619411][ T458] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 352.625370][ T458] cgroup_file_write+0x28e/0x590 [ 352.630298][ T458] ? cgroup_seqfile_stop+0xc0/0xc0 [ 352.635393][ T458] ? mutex_lock+0xa6/0x110 [ 352.639794][ T458] ? mutex_trylock+0xb0/0xb0 [ 352.644371][ T458] ? __kasan_check_write+0x14/0x20 [ 352.649461][ T458] kernfs_fop_write_iter+0x2d0/0x410 [ 352.654740][ T458] ? cgroup_seqfile_stop+0xc0/0xc0 [ 352.659830][ T458] vfs_write+0xc1c/0xf40 [ 352.664051][ T458] ? slab_free_freelist_hook+0xcc/0x1a0 [ 352.669578][ T458] ? kernel_write+0x3c0/0x3c0 [ 352.674234][ T458] ? mutex_trylock+0xb0/0xb0 [ 352.678804][ T458] ? __fdget_pos+0x26d/0x310 [ 352.683371][ T458] ? ksys_write+0x77/0x2c0 [ 352.687761][ T458] ksys_write+0x198/0x2c0 [ 352.692069][ T458] ? __ia32_sys_read+0x90/0x90 [ 352.696816][ T458] ? debug_smp_processor_id+0x17/0x20 [ 352.702164][ T458] __x64_sys_write+0x7b/0x90 [ 352.706846][ T458] do_syscall_64+0x34/0x70 [ 352.711243][ T458] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 352.717119][ T458] RIP: 0033:0x7f5223098259 [ 352.721526][ T458] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 352.741140][ T458] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 352.749536][ T458] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 executing program [ 352.757516][ T458] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 352.765471][ T458] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 352.773422][ T458] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 352.781376][ T458] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 352.817151][ T456] FAULT_INJECTION: forcing a failure. [ 352.817151][ T456] name failslab, interval 1, probability 0, space 0, times 0 [ 352.829964][ T456] CPU: 0 PID: 456 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 352.841571][ T456] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 352.851613][ T456] Call Trace: [ 352.854886][ T456] dump_stack_lvl+0x1e2/0x24b [ 352.859542][ T456] ? bfq_pos_tree_add_move+0x43e/0x43e [ 352.864980][ T456] dump_stack+0x15/0x17 [ 352.869201][ T456] should_fail+0x3c0/0x510 [ 352.873600][ T456] ? pids_css_alloc+0x4e/0x120 [ 352.878462][ T456] __should_failslab+0x9f/0xe0 [ 352.883218][ T456] should_failslab+0x9/0x20 [ 352.887705][ T456] kmem_cache_alloc_trace+0x3a/0x330 [ 352.893176][ T456] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 352.898357][ T456] pids_css_alloc+0x4e/0x120 [ 352.902937][ T456] cgroup_apply_control_enable+0x350/0x12f0 [ 352.908838][ T456] cgroup_apply_control+0x93/0x710 [ 352.913946][ T456] ? css_next_child+0x160/0x160 [ 352.918779][ T456] ? io_schedule+0x120/0x120 [ 352.923350][ T456] ? kernfs_fop_write_iter+0x15e/0x410 [ 352.928791][ T456] ? __kasan_check_write+0x14/0x20 [ 352.933887][ T456] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 352.939152][ T456] cgroup_subtree_control_write+0xd19/0x1310 [ 352.945115][ T456] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 352.951087][ T456] ? __kasan_check_write+0x14/0x20 [ 352.956287][ T456] ? _copy_from_iter+0x3fb/0xd60 [ 352.961205][ T456] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 352.967189][ T456] cgroup_file_write+0x28e/0x590 [ 352.972110][ T456] ? cgroup_seqfile_stop+0xc0/0xc0 [ 352.977207][ T456] ? mutex_lock+0xa6/0x110 [ 352.981618][ T456] ? mutex_trylock+0xb0/0xb0 [ 352.986215][ T456] ? __kasan_check_write+0x14/0x20 [ 352.991328][ T456] kernfs_fop_write_iter+0x2d0/0x410 [ 352.996602][ T456] ? cgroup_seqfile_stop+0xc0/0xc0 [ 353.001721][ T456] vfs_write+0xc1c/0xf40 [ 353.005974][ T456] ? kernel_write+0x3c0/0x3c0 [ 353.010651][ T456] ? mutex_trylock+0xb0/0xb0 [ 353.015226][ T456] ? __fdget_pos+0x26d/0x310 [ 353.019798][ T456] ? ksys_write+0x77/0x2c0 [ 353.024193][ T456] ksys_write+0x198/0x2c0 [ 353.028500][ T456] ? __ia32_sys_read+0x90/0x90 [ 353.033249][ T456] ? debug_smp_processor_id+0x17/0x20 [ 353.038602][ T456] __x64_sys_write+0x7b/0x90 [ 353.043177][ T456] do_syscall_64+0x34/0x70 [ 353.047583][ T456] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 353.053480][ T456] RIP: 0033:0x7f5223098259 [ 353.057878][ T456] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 353.077463][ T456] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 353.085860][ T456] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 353.093829][ T456] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 353.101790][ T456] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 353.109854][ T456] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 353.117808][ T456] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 353.128771][ T372] ------------[ cut here ]------------ [ 353.134257][ T372] WARNING: CPU: 0 PID: 372 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 353.143216][ T372] Modules linked in: [ 353.147165][ T372] CPU: 0 PID: 372 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 353.158822][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 353.168897][ T372] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 353.174513][ T372] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 353.194131][ T372] RSP: 0018:ffffc90000b57ba0 EFLAGS: 00010293 [ 353.200241][ T372] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a0000 [ 353.208237][ T372] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 353.216208][ T372] RBP: ffffc90000b57c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 353.224215][ T372] R10: fffff5200016af65 R11: 1ffff9200016af64 R12: dffffc0000000000 [ 353.232314][ T372] R13: ffff8881049b3a40 R14: ffffc90000b57c00 R15: 1ffff9200016af7c [ 353.240310][ T372] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 353.249349][ T372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 353.255928][ T372] CR2: 000055555703b738 CR3: 0000000119876000 CR4: 00000000003506b0 [ 353.264276][ T372] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 353.272354][ T372] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 353.280343][ T372] Call Trace: [ 353.283630][ T372] ? io_schedule+0x120/0x120 [ 353.288265][ T372] ? vfs_submount+0xb0/0xb0 [ 353.292771][ T372] ? shrink_dentry_list+0x4ec/0x500 [ 353.297986][ T372] ? __kasan_check_write+0x14/0x20 [ 353.303099][ T372] namespace_unlock+0x448/0x4f0 [ 353.307966][ T372] ? umount_tree+0xf50/0xf50 [ 353.312568][ T372] ? __detach_mounts+0x670/0x670 [ 353.317530][ T372] ? selinux_umount+0xf0/0x130 [ 353.322292][ T372] ? security_sb_umount+0x9d/0xb0 [ 353.327339][ T372] path_umount+0xf03/0xfb0 [ 353.331759][ T372] ? namespace_unlock+0x4f0/0x4f0 [ 353.336800][ T372] ? user_path_at_empty+0x40/0x50 [ 353.341829][ T372] __x64_sys_umount+0x122/0x170 [ 353.346692][ T372] ? path_umount+0xfb0/0xfb0 [ 353.351285][ T372] ? debug_smp_processor_id+0x17/0x20 [ 353.356681][ T372] do_syscall_64+0x34/0x70 [ 353.361095][ T372] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 353.366996][ T372] RIP: 0033:0x7f5223099667 [ 353.371411][ T372] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 353.391052][ T372] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 353.399503][ T372] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 353.407489][ T372] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 353.415481][ T372] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 353.423485][ T372] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 353.431504][ T372] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 353.439496][ T372] ---[ end trace 049b4861796392eb ]--- [ 353.445028][ T372] ------------[ cut here ]------------ [ 353.450566][ T372] WARNING: CPU: 0 PID: 372 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 353.459571][ T372] Modules linked in: [ 353.463458][ T372] CPU: 0 PID: 372 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 353.475196][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 353.485295][ T372] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 353.490944][ T372] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 353.510581][ T372] RSP: 0018:ffffc90000b57ca0 EFLAGS: 00010293 [ 353.516778][ T372] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff8881073a0000 [ 353.524753][ T372] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 353.532730][ T372] RBP: ffffc90000b57d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 353.540724][ T372] R10: fffff5200016af85 R11: 1ffff9200016af84 R12: dffffc0000000000 [ 353.548704][ T372] R13: ffff8881049b3a40 R14: ffffc90000b57d00 R15: 1ffff9200016af9c [ 353.556871][ T372] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 353.565796][ T372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 353.572408][ T372] CR2: 000055555703b738 CR3: 0000000119876000 CR4: 00000000003506b0 [ 353.580388][ T372] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 353.588419][ T372] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 353.596383][ T372] Call Trace: [ 353.599696][ T372] ? lockref_get_or_lock+0x340/0x340 [ 353.604982][ T372] ? umount_tree+0xf50/0xf50 [ 353.609572][ T372] ? vfs_submount+0xb0/0xb0 [ 353.614059][ T372] ? dput+0x2b6/0x320 [ 353.618046][ T372] path_umount+0x1fe/0xfb0 [ 353.622455][ T372] ? namespace_unlock+0x4f0/0x4f0 [ 353.627523][ T372] ? user_path_at_empty+0x40/0x50 [ 353.632533][ T372] __x64_sys_umount+0x122/0x170 [ 353.637388][ T372] ? path_umount+0xfb0/0xfb0 [ 353.641974][ T372] ? debug_smp_processor_id+0x17/0x20 [ 353.647350][ T372] do_syscall_64+0x34/0x70 [ 353.651760][ T372] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 353.657652][ T372] RIP: 0033:0x7f5223099667 [ 353.662053][ T372] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 353.681661][ T372] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 353.690084][ T372] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 353.698144][ T372] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 353.706102][ T372] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 executing program [ 353.714205][ T372] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 353.722181][ T372] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 353.730162][ T372] ---[ end trace 049b4861796392ec ]--- [ 353.735909][ T472] FAULT_INJECTION: forcing a failure. [ 353.735909][ T472] name failslab, interval 1, probability 0, space 0, times 0 [ 353.750709][ T472] CPU: 0 PID: 472 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 353.762344][ T472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 353.772397][ T472] Call Trace: [ 353.775677][ T472] dump_stack_lvl+0x1e2/0x24b [ 353.780350][ T472] ? bfq_pos_tree_add_move+0x43e/0x43e [ 353.785875][ T472] ? selinux_kernfs_init_security+0x1a8/0x760 [ 353.791925][ T472] dump_stack+0x15/0x17 [ 353.796063][ T472] should_fail+0x3c0/0x510 [ 353.800471][ T472] ? __kernfs_new_node+0x99/0x6e0 [ 353.805497][ T472] __should_failslab+0x9f/0xe0 [ 353.810253][ T472] should_failslab+0x9/0x20 [ 353.814760][ T472] __kmalloc_track_caller+0x5f/0x350 [ 353.820030][ T472] kstrdup_const+0x55/0x90 [ 353.824427][ T472] __kernfs_new_node+0x99/0x6e0 [ 353.829282][ T472] ? is_module_text_address+0xe1/0x140 [ 353.834731][ T472] ? kernfs_new_node+0x170/0x170 [ 353.839653][ T472] ? ptr_to_hashval+0x60/0x60 [ 353.844310][ T472] ? arch_stack_walk+0xf8/0x140 [ 353.849142][ T472] ? snprintf+0xd6/0x120 [ 353.853363][ T472] kernfs_new_node+0x97/0x170 [ 353.858031][ T472] __kernfs_create_file+0x4a/0x270 [ 353.863123][ T472] cgroup_addrm_files+0xab8/0xfe0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 353.868129][ T472] ? ____kasan_kmalloc+0xdc/0x110 [ 353.873134][ T472] ? __kasan_kmalloc+0x9/0x10 [ 353.877791][ T472] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 353.883448][ T472] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 353.889768][ T472] ? delete_node+0x759/0x7b0 [ 353.894342][ T472] ? __kasan_check_read+0x11/0x20 [ 353.899347][ T472] ? delete_node+0x759/0x7b0 [ 353.903936][ T472] ? __kasan_check_write+0x14/0x20 [ 353.909038][ T472] ? idr_replace+0x1c4/0x230 [ 353.913625][ T472] ? idr_get_next+0x4b0/0x4b0 [ 353.918283][ T472] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 353.923299][ T472] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 353.928480][ T472] css_populate_dir+0x137/0x370 [ 353.933397][ T472] cgroup_apply_control_enable+0x8b9/0x12f0 [ 353.939272][ T472] cgroup_apply_control+0x93/0x710 [ 353.944362][ T472] ? css_next_child+0x160/0x160 [ 353.949193][ T472] ? stack_trace_save+0x12d/0x1f0 [ 353.954294][ T472] ? io_schedule+0x120/0x120 [ 353.958870][ T472] ? kernfs_fop_write_iter+0x15e/0x410 [ 353.964309][ T472] ? __kasan_check_write+0x14/0x20 [ 353.969402][ T472] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 353.974663][ T472] cgroup_subtree_control_write+0xd19/0x1310 [ 353.980664][ T472] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 353.986628][ T472] ? __kasan_check_write+0x14/0x20 [ 353.991724][ T472] ? _copy_from_iter+0x3fb/0xd60 [ 353.996644][ T472] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 354.002606][ T472] cgroup_file_write+0x28e/0x590 [ 354.007523][ T472] ? cgroup_seqfile_stop+0xc0/0xc0 [ 354.012610][ T472] ? mutex_lock+0xa6/0x110 [ 354.017004][ T472] ? mutex_trylock+0xb0/0xb0 [ 354.021660][ T472] ? __kasan_check_write+0x14/0x20 [ 354.026771][ T472] kernfs_fop_write_iter+0x2d0/0x410 [ 354.032046][ T472] ? cgroup_seqfile_stop+0xc0/0xc0 [ 354.037140][ T472] vfs_write+0xc1c/0xf40 [ 354.041384][ T472] ? slab_free_freelist_hook+0xcc/0x1a0 [ 354.046908][ T472] ? kernel_write+0x3c0/0x3c0 [ 354.051565][ T472] ? mutex_trylock+0xb0/0xb0 [ 354.056128][ T472] ? __fdget_pos+0x26d/0x310 [ 354.060703][ T472] ? ksys_write+0x77/0x2c0 [ 354.065101][ T472] ksys_write+0x198/0x2c0 [ 354.069409][ T472] ? __kasan_check_write+0x14/0x20 [ 354.074498][ T472] ? __ia32_sys_read+0x90/0x90 [ 354.079241][ T472] ? debug_smp_processor_id+0x17/0x20 [ 354.084592][ T472] __x64_sys_write+0x7b/0x90 [ 354.089176][ T472] do_syscall_64+0x34/0x70 [ 354.093576][ T472] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 354.099442][ T472] RIP: 0033:0x7f5223098259 [ 354.103836][ T472] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 354.123418][ T472] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 354.131830][ T472] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 354.139787][ T472] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 354.147754][ T472] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 354.155711][ T472] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 354.163672][ T472] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 354.171799][ T472] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 354.181712][ T373] ------------[ cut here ]------------ [ 354.187256][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 354.196167][ T373] Modules linked in: [ 354.200152][ T373] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 354.212022][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 354.222145][ T373] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 354.227821][ T373] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 354.247570][ T373] RSP: 0018:ffffc90000b67ca0 EFLAGS: 00010293 [ 354.253627][ T373] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a62c0 [ 354.261663][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 354.269656][ T373] RBP: ffffc90000b67d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 354.277734][ T373] R10: fffff5200016cf85 R11: 1ffff9200016cf84 R12: dffffc0000000000 [ 354.285693][ T373] R13: ffff8881049b2c40 R14: ffffc90000b67d00 R15: 1ffff9200016cf9c [ 354.293671][ T373] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 354.302613][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 354.309208][ T373] CR2: 00007f52230e1a38 CR3: 000000011d0ad000 CR4: 00000000003506a0 [ 354.317192][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 354.325153][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 354.333144][ T373] Call Trace: [ 354.336419][ T373] ? lockref_get_or_lock+0x340/0x340 [ 354.341716][ T373] ? umount_tree+0xf50/0xf50 [ 354.346292][ T373] ? vfs_submount+0xb0/0xb0 [ 354.350798][ T373] ? dput+0x2b6/0x320 [ 354.354766][ T373] path_umount+0x1fe/0xfb0 [ 354.359189][ T373] ? namespace_unlock+0x4f0/0x4f0 [ 354.364291][ T373] ? user_path_at_empty+0x40/0x50 [ 354.369319][ T373] __x64_sys_umount+0x122/0x170 [ 354.374155][ T373] ? path_umount+0xfb0/0xfb0 [ 354.378751][ T373] ? debug_smp_processor_id+0x17/0x20 [ 354.384112][ T373] do_syscall_64+0x34/0x70 [ 354.388537][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 354.394425][ T373] RIP: 0033:0x7f5223099667 [ 354.398869][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 354.418497][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 354.426935][ T373] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 354.434904][ T373] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 354.442905][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 354.450900][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 354.458891][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 354.466870][ T373] ---[ end trace 049b4861796392ed ]--- executing program [ 354.472513][ T373] ------------[ cut here ]------------ [ 354.478048][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1109 cleanup_mnt+0x4c5/0x510 [ 354.486533][ T373] Modules linked in: [ 354.490558][ C1] ------------[ cut here ]------------ [ 354.490570][ C1] percpu ref (css_release) <= 0 (0) after switching to atomic [ 354.490630][ C1] WARNING: CPU: 1 PID: 373 at lib/percpu-refcount.c:196 percpu_ref_switch_to_atomic_rcu+0x505/0x5b0 [ 354.490632][ C1] Modules linked in: [ 354.490643][ C1] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 354.490646][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 354.490653][ C1] RIP: 0010:percpu_ref_switch_to_atomic_rcu+0x505/0x5b0 [ 354.490659][ C1] Code: 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ef e8 00 55 5a ff 49 8b 55 00 48 c7 c7 e0 a8 43 85 48 89 de 31 c0 e8 fb d9 f2 fe <0f> 0b e9 4b fd ff ff e8 ff 8e 20 ff 0f 0b e9 a2 fe ff ff 48 c7 c1 [ 354.490663][ C1] RSP: 0018:ffffc90000160c08 EFLAGS: 00010246 [ 354.490669][ C1] RAX: d021bf5828b46200 RBX: ffffffff81647b30 RCX: ffff8881073a62c0 [ 354.490673][ C1] RDX: 0000000000000101 RSI: 0000000000000101 RDI: 0000000000000000 [ 354.490677][ C1] RBP: ffffc90000160c50 R08: ffffffff8153b3c8 R09: 0000000000000003 [ 354.490682][ C1] R10: fffff5200002c121 R11: 1ffff9200002c120 R12: 7fffffffffffffff [ 354.490686][ C1] R13: ffff88811d5d8980 R14: 1ffff11023abb130 R15: ffff88811d5d89a0 [ 354.490691][ C1] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 354.490695][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 354.490699][ C1] CR2: 00007f52230e1a38 CR3: 000000011d0ad000 CR4: 00000000003506a0 [ 354.490705][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 354.490708][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 354.490710][ C1] Call Trace: [ 354.490712][ C1] [ 354.490719][ C1] ? percpu_ref_noop_confirm_switch+0x10/0x10 [ 354.490725][ C1] rcu_do_batch+0x4f8/0xbc0 [ 354.490731][ C1] ? local_bh_enable+0x20/0x20 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 354.490735][ C1] ? note_gp_changes+0x158/0x260 [ 354.490742][ C1] ? clockevents_program_event+0x218/0x2d0 [ 354.490750][ C1] ? debug_smp_processor_id+0x17/0x20 [ 354.490755][ C1] rcu_core+0x59b/0xe30 [ 354.490760][ C1] ? rcu_cpu_kthread_park+0x90/0x90 [ 354.490767][ C1] ? net_tx_action+0x8f0/0x8f0 [ 354.490774][ C1] ? irqtime_account_irq+0x76/0x270 [ 354.490778][ C1] rcu_core_si+0x9/0x10 [ 354.490784][ C1] __do_softirq+0x27e/0x596 [ 354.490789][ C1] asm_call_irq_on_stack+0xf/0x20 [ 354.490792][ C1] [ 354.490801][ C1] do_softirq_own_stack+0x60/0x80 [ 354.490810][ C1] __irq_exit_rcu+0x128/0x150 [ 354.490819][ C1] irq_exit_rcu+0x9/0x10 [ 354.490831][ C1] sysvec_apic_timer_interrupt+0xbf/0xe0 [ 354.490840][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 354.490851][ C1] RIP: 0010:console_unlock+0xb5c/0xf20 [ 354.490860][ C1] Code: 85 db 4c 8d b4 24 60 01 00 00 0f 85 82 03 00 00 e8 49 6e 00 00 48 8b 44 24 30 48 89 84 24 90 00 00 00 ff b4 24 90 00 00 00 9d <48> 8b 44 24 38 42 80 3c 38 00 74 08 4c 89 f7 e8 20 cc 52 00 48 c7 [ 354.490867][ C1] RSP: 0018:ffffc90000b676c0 EFLAGS: 00000246 [ 354.490877][ C1] RAX: 0000000000000246 RBX: 0000000000000000 RCX: ffff8881073a62c0 [ 354.490884][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 354.490891][ C1] RBP: ffffc90000b67950 R08: ffffffff8153af0b R09: 0000000000000003 [ 354.490898][ C1] R10: fffff5200016cec9 R11: 1ffff9200016cec8 R12: ffffc90000b678c0 [ 354.490905][ C1] R13: 1ffffffff0cbacc1 R14: ffffc90000b67820 R15: dffffc0000000000 [ 354.490922][ C1] ? console_unlock+0xb1b/0xf20 [ 354.490941][ C1] ? __kasan_check_write+0x14/0x20 [ 354.490956][ C1] ? _raw_spin_lock_irqsave+0xf8/0x210 [ 354.490969][ C1] ? vprintk_emit+0x640/0x640 [ 354.490982][ C1] ? _raw_spin_lock+0x1b0/0x1b0 [ 354.490995][ C1] ? log_output+0x207/0x4d0 [ 354.491007][ C1] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 354.491021][ C1] ? resume_console+0x50/0x50 [ 354.491034][ C1] ? _raw_spin_lock+0xa3/0x1b0 [ 354.491047][ C1] ? __kasan_check_write+0x14/0x20 [ 354.491060][ C1] vprintk_emit+0x44b/0x640 [ 354.491074][ C1] ? resume_console+0x50/0x50 [ 354.491081][ C1] ? log_output+0x4d0/0x4d0 [ 354.491088][ C1] ? __kasan_check_write+0x14/0x20 [ 354.491096][ C1] ? wake_up_klogd+0xc1/0xf0 [ 354.491104][ C1] vprintk_default+0x26/0x30 [ 354.491112][ C1] vprintk_func+0x19d/0x1e0 [ 354.491120][ C1] printk+0xcf/0x10f [ 354.491129][ C1] ? log_output+0x4d0/0x4d0 [ 354.491138][ C1] ? wake_up_klogd+0xb8/0xf0 [ 354.491147][ C1] ? panic+0x7d7/0x7d7 [ 354.491158][ C1] ? vprintk_default+0x26/0x30 [ 354.491168][ C1] print_modules+0xf8/0x1f0 [ 354.491177][ C1] ? is_module_text_address+0x140/0x140 [ 354.491186][ C1] ? panic+0x7d7/0x7d7 [ 354.491195][ C1] __warn+0xf5/0x260 [ 354.491204][ C1] ? cleanup_mnt+0x4c5/0x510 [ 354.491213][ C1] report_bug+0x410/0x580 [ 354.491220][ C1] ? cleanup_mnt+0x4c5/0x510 [ 354.491234][ C1] handle_bug+0x41/0x70 [ 354.491246][ C1] exc_invalid_op+0x1b/0x50 [ 354.491258][ C1] asm_exc_invalid_op+0x12/0x20 [ 354.491271][ C1] RIP: 0010:cleanup_mnt+0x4c5/0x510 [ 354.491284][ C1] Code: 0f a1 ff 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7e 0e b5 ff 48 8b 7d d0 e8 c5 07 05 00 e9 21 fd ff ff e8 6b 0e b5 ff <0f> 0b e9 e5 fc ff ff 48 c7 c1 98 c6 9e 86 80 e1 07 80 c1 03 38 c1 [ 354.491294][ C1] RSP: 0018:ffffc90000b67e30 EFLAGS: 00010293 [ 354.491314][ C1] RAX: ffffffff81b7a695 RBX: ffffe8ffffd22064 RCX: ffff8881073a62c0 [ 354.491324][ C1] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 354.491337][ C1] RBP: ffffc90000b67e80 R08: ffffffff81b7a373 R09: 0000000000000003 [ 354.491344][ C1] R10: fffff5200016cfc5 R11: 1ffff9200016cfc4 R12: ffff8881049b2ca8 [ 354.491351][ C1] R13: 0000000000000008 R14: dffffc0000000000 R15: 00000000ffffffff [ 354.491359][ C1] ? cleanup_mnt+0x1a3/0x510 [ 354.491366][ C1] ? cleanup_mnt+0x4c5/0x510 [ 354.491375][ C1] __cleanup_mnt+0x19/0x20 [ 354.491383][ C1] task_work_run+0x147/0x1b0 [ 354.491392][ C1] exit_to_user_mode_loop+0xc8/0xe0 [ 354.491400][ C1] syscall_exit_to_user_mode+0x77/0xa0 [ 354.491408][ C1] do_syscall_64+0x40/0x70 [ 354.491416][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 354.491423][ C1] RIP: 0033:0x7f5223099667 [ 354.491432][ C1] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 354.491437][ C1] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 354.491448][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5223099667 [ 354.491456][ C1] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 354.491462][ C1] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 354.491470][ C1] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 354.491478][ C1] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 354.491486][ C1] ---[ end trace 049b4861796392ee ]--- [ 355.158830][ T373] CPU: 0 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 355.159264][ T470] FAULT_INJECTION: forcing a failure. [ 355.159264][ T470] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 355.170596][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 355.194239][ T470] CPU: 0 PID: 470 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 355.194401][ T373] RIP: 0010:cleanup_mnt+0x4c5/0x510 [ 355.205849][ T470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 355.205854][ T470] Call Trace: [ 355.205868][ T470] dump_stack_lvl+0x1e2/0x24b [ 355.205878][ T470] ? asm_sysvec_call_function_single+0x12/0x20 [ 355.205886][ T470] ? bfq_pos_tree_add_move+0x43e/0x43e [ 355.205894][ T470] ? dump_stack+0x9/0x17 [ 355.205902][ T470] dump_stack+0x15/0x17 [ 355.205910][ T470] should_fail+0x3c0/0x510 [ 355.205920][ T470] should_fail_alloc_page+0x50/0x60 [ 355.205938][ T470] __alloc_pages_nodemask+0x1c0/0x890 [ 355.211707][ T373] Code: 0f a1 ff 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7e 0e b5 ff 48 8b 7d d0 e8 c5 07 05 00 e9 21 fd ff ff e8 6b 0e b5 ff <0f> 0b e9 e5 fc ff ff 48 c7 c1 98 c6 9e 86 80 e1 07 80 c1 03 38 c1 [ 355.221148][ T470] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 355.221159][ T470] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 355.221169][ T470] allocate_slab+0x78/0x540 [ 355.221179][ T470] ___slab_alloc+0x131/0x2e0 [ 355.221188][ T470] ? pids_css_alloc+0x4e/0x120 [ 355.221203][ T470] __slab_alloc+0x63/0xa0 [ 355.224846][ T373] RSP: 0018:ffffc90000b67e30 EFLAGS: 00010293 [ 355.229118][ T470] ? pids_css_alloc+0x4e/0x120 [ 355.229129][ T470] kmem_cache_alloc_trace+0x20e/0x330 [ 355.229137][ T470] ? pids_css_alloc+0x4e/0x120 [ 355.229145][ T470] pids_css_alloc+0x4e/0x120 [ 355.229157][ T470] cgroup_apply_control_enable+0x350/0x12f0 [ 355.229172][ T470] cgroup_apply_control+0x93/0x710 [ 355.235641][ T373] [ 355.240732][ T470] ? css_next_child+0x160/0x160 [ 355.240742][ T470] ? io_schedule+0x120/0x120 [ 355.240753][ T470] ? __kasan_check_write+0x14/0x20 [ 355.240762][ T470] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 355.240770][ T470] cgroup_subtree_control_write+0xd19/0x1310 [ 355.240785][ T470] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 355.245378][ T373] RAX: ffffffff81b7a695 RBX: ffffe8ffffd22064 RCX: ffff8881073a62c0 [ 355.249133][ T470] ? __kasan_check_write+0x14/0x20 [ 355.249144][ T470] ? _copy_from_iter+0x3fb/0xd60 [ 355.249154][ T470] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 355.249162][ T470] cgroup_file_write+0x28e/0x590 [ 355.249170][ T470] ? cgroup_seqfile_stop+0xc0/0xc0 [ 355.249187][ T470] ? mutex_lock+0xa6/0x110 [ 355.253952][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 355.258760][ T470] ? mutex_trylock+0xb0/0xb0 [ 355.258771][ T470] ? __kasan_check_write+0x14/0x20 [ 355.258780][ T470] kernfs_fop_write_iter+0x2d0/0x410 [ 355.258789][ T470] ? cgroup_seqfile_stop+0xc0/0xc0 [ 355.258799][ T470] vfs_write+0xc1c/0xf40 [ 355.258807][ T470] ? kernel_write+0x3c0/0x3c0 [ 355.258823][ T470] ? mutex_trylock+0xb0/0xb0 [ 355.264567][ T373] RBP: ffffc90000b67e80 R08: ffffffff81b7a373 R09: 0000000000000003 [ 355.283756][ T470] ? __fdget_pos+0x26d/0x310 [ 355.283766][ T470] ? ksys_write+0x77/0x2c0 [ 355.283774][ T470] ksys_write+0x198/0x2c0 [ 355.283784][ T470] ? __ia32_sys_read+0x90/0x90 [ 355.283795][ T470] ? debug_smp_processor_id+0x17/0x20 [ 355.283802][ T470] __x64_sys_write+0x7b/0x90 [ 355.283818][ T470] do_syscall_64+0x34/0x70 [ 355.290485][ T373] R10: fffff5200016cfc5 R11: 1ffff9200016cfc4 R12: ffff8881049b2ca8 [ 355.295554][ T470] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 355.295563][ T470] RIP: 0033:0x7f5223098259 [ 355.295573][ T470] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 355.295586][ T470] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 [ 355.300352][ T373] R13: 0000000000000008 R14: dffffc0000000000 R15: 00000000ffffffff [ 355.304626][ T470] ORIG_RAX: 0000000000000001 [ 355.304634][ T470] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 355.304641][ T470] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 355.304647][ T470] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 355.304660][ T470] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 355.309805][ T373] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 355.313697][ T470] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 355.610089][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 355.616999][ T373] CR2: 00007f52230e1a38 CR3: 000000011d0ad000 CR4: 00000000003506a0 executing program [ 355.625077][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 355.629944][ T478] FAULT_INJECTION: forcing a failure. [ 355.629944][ T478] name failslab, interval 1, probability 0, space 0, times 0 [ 355.634284][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 355.646997][ T478] CPU: 0 PID: 478 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 355.653776][ T373] Call Trace: [ 355.665239][ T478] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 355.665243][ T478] Call Trace: [ 355.665260][ T478] dump_stack_lvl+0x1e2/0x24b [ 355.665270][ T478] ? bfq_pos_tree_add_move+0x43e/0x43e [ 355.665279][ T478] ? selinux_kernfs_init_security+0x1a8/0x760 [ 355.665287][ T478] dump_stack+0x15/0x17 [ 355.665295][ T478] should_fail+0x3c0/0x510 [ 355.665305][ T478] ? __kernfs_new_node+0x99/0x6e0 [ 355.665314][ T478] __should_failslab+0x9f/0xe0 [ 355.665323][ T478] should_failslab+0x9/0x20 [ 355.665331][ T478] __kmalloc_track_caller+0x5f/0x350 [ 355.665341][ T478] kstrdup_const+0x55/0x90 [ 355.665348][ T478] __kernfs_new_node+0x99/0x6e0 [ 355.665356][ T478] ? is_module_text_address+0xe1/0x140 [ 355.665365][ T478] ? kernfs_new_node+0x170/0x170 [ 355.665375][ T478] ? ptr_to_hashval+0x60/0x60 [ 355.665383][ T478] ? arch_stack_walk+0xf8/0x140 [ 355.665392][ T478] ? snprintf+0xd6/0x120 [ 355.665400][ T478] kernfs_new_node+0x97/0x170 [ 355.665417][ T478] __kernfs_create_file+0x4a/0x270 [ 355.668695][ T373] __cleanup_mnt+0x19/0x20 [ 355.678709][ T478] cgroup_addrm_files+0xab8/0xfe0 [ 355.678718][ T478] ? ____kasan_kmalloc+0xdc/0x110 [ 355.678725][ T478] ? __kasan_kmalloc+0x9/0x10 [ 355.678734][ T478] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 355.678743][ T478] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 355.678750][ T478] ? delete_node+0x759/0x7b0 [ 355.678766][ T478] ? __kasan_check_read+0x11/0x20 [ 355.682340][ T373] task_work_run+0x147/0x1b0 [ 355.686668][ T478] ? delete_node+0x759/0x7b0 [ 355.686678][ T478] ? __kasan_check_write+0x14/0x20 [ 355.686689][ T478] ? idr_replace+0x1c4/0x230 [ 355.686703][ T478] ? idr_get_next+0x4b0/0x4b0 [ 355.692146][ T373] exit_to_user_mode_loop+0xc8/0xe0 [ 355.698175][ T478] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 355.698182][ T478] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 355.698192][ T478] css_populate_dir+0x137/0x370 [ 355.698202][ T478] cgroup_apply_control_enable+0x8b9/0x12f0 [ 355.698211][ T478] cgroup_apply_control+0x93/0x710 [ 355.698227][ T478] ? css_next_child+0x160/0x160 [ 355.702357][ T373] syscall_exit_to_user_mode+0x77/0xa0 [ 355.706741][ T478] ? release_task_stack+0x4c2/0x660 [ 355.706751][ T478] ? io_schedule+0x120/0x120 [ 355.706760][ T478] ? kernfs_fop_write_iter+0x15e/0x410 [ 355.706774][ T478] ? __kasan_check_write+0x14/0x20 [ 355.706784][ T478] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 355.706796][ T478] cgroup_subtree_control_write+0xd19/0x1310 [ 355.706812][ T478] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 355.912216][ T478] ? __kasan_check_write+0x14/0x20 [ 355.917310][ T478] ? _copy_from_iter+0x3fb/0xd60 [ 355.922231][ T478] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 355.928193][ T478] cgroup_file_write+0x28e/0x590 [ 355.933118][ T478] ? cgroup_seqfile_stop+0xc0/0xc0 [ 355.938212][ T478] ? mutex_lock+0xa6/0x110 [ 355.942628][ T478] ? mutex_trylock+0xb0/0xb0 [ 355.947214][ T478] ? __kasan_check_write+0x14/0x20 [ 355.952330][ T478] kernfs_fop_write_iter+0x2d0/0x410 [ 355.957608][ T478] ? cgroup_seqfile_stop+0xc0/0xc0 [ 355.962697][ T478] vfs_write+0xc1c/0xf40 [ 355.966926][ T478] ? kernel_write+0x3c0/0x3c0 [ 355.971587][ T478] ? mutex_trylock+0xb0/0xb0 [ 355.976162][ T478] ? __fdget_pos+0x26d/0x310 [ 355.980728][ T478] ? ksys_write+0x77/0x2c0 [ 355.985139][ T478] ksys_write+0x198/0x2c0 [ 355.989463][ T478] ? __ia32_sys_read+0x90/0x90 [ 355.994229][ T478] ? debug_smp_processor_id+0x17/0x20 [ 355.999581][ T478] __x64_sys_write+0x7b/0x90 [ 356.004153][ T478] do_syscall_64+0x34/0x70 [ 356.008552][ T478] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 356.014426][ T478] RIP: 0033:0x7f5223098259 [ 356.018822][ T478] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 356.038423][ T478] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 356.046819][ T478] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 356.054774][ T478] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 356.062734][ T478] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 356.070692][ T478] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program [ 356.078649][ T478] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 356.086904][ T373] do_syscall_64+0x40/0x70 [ 356.088043][ T478] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 356.091552][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 356.104597][ T373] RIP: 0033:0x7f5223099667 [ 356.109952][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 356.130055][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 356.141329][ T373] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5223099667 [ 356.149395][ T373] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 356.150596][ T461] FAULT_INJECTION: forcing a failure. [ 356.150596][ T461] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 356.157582][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 executing program [ 356.170877][ T461] CPU: 0 PID: 461 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 356.178751][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 356.190194][ T461] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 356.190198][ T461] Call Trace: [ 356.190214][ T461] dump_stack_lvl+0x1e2/0x24b [ 356.190223][ T461] ? bfq_pos_tree_add_move+0x43e/0x43e [ 356.190234][ T461] ? __kasan_check_write+0x14/0x20 [ 356.190241][ T461] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 356.190249][ T461] dump_stack+0x15/0x17 [ 356.190256][ T461] should_fail+0x3c0/0x510 [ 356.190266][ T461] should_fail_alloc_page+0x50/0x60 [ 356.190283][ T461] __alloc_pages_nodemask+0x1c0/0x890 [ 356.199069][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 356.208280][ T461] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 356.208291][ T461] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 356.208301][ T461] allocate_slab+0x78/0x540 [ 356.208311][ T461] ___slab_alloc+0x131/0x2e0 [ 356.208333][ T461] ? pids_css_alloc+0x4e/0x120 [ 356.211938][ T373] ---[ end trace 049b4861796392ef ]--- [ 356.216246][ T461] __slab_alloc+0x63/0xa0 [ 356.216256][ T461] ? pids_css_alloc+0x4e/0x120 [ 356.216273][ T461] kmem_cache_alloc_trace+0x20e/0x330 [ 356.304307][ T461] ? pids_css_alloc+0x4e/0x120 [ 356.309057][ T461] pids_css_alloc+0x4e/0x120 [ 356.313631][ T461] cgroup_apply_control_enable+0x350/0x12f0 [ 356.319502][ T461] cgroup_apply_control+0x93/0x710 [ 356.324590][ T461] ? css_next_child+0x160/0x160 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 356.329415][ T461] ? io_schedule+0x120/0x120 [ 356.333985][ T461] ? kernfs_fop_write_iter+0x15e/0x410 [ 356.339438][ T461] ? __kasan_check_write+0x14/0x20 [ 356.344529][ T461] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 356.349791][ T461] cgroup_subtree_control_write+0xd19/0x1310 [ 356.355766][ T461] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 356.361732][ T461] ? __kasan_check_write+0x14/0x20 [ 356.366831][ T461] ? _copy_from_iter+0x3fb/0xd60 [ 356.371752][ T461] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 356.377708][ T461] cgroup_file_write+0x28e/0x590 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 356.382625][ T461] ? cgroup_seqfile_stop+0xc0/0xc0 [ 356.388240][ T461] ? mutex_lock+0xa6/0x110 [ 356.392632][ T461] ? mutex_trylock+0xb0/0xb0 [ 356.397196][ T461] ? __kasan_check_write+0x14/0x20 [ 356.402371][ T461] kernfs_fop_write_iter+0x2d0/0x410 [ 356.407635][ T461] ? cgroup_seqfile_stop+0xc0/0xc0 [ 356.412815][ T461] vfs_write+0xc1c/0xf40 [ 356.417057][ T461] ? kernel_write+0x3c0/0x3c0 [ 356.421725][ T461] ? mutex_trylock+0xb0/0xb0 [ 356.426293][ T461] ? __fdget_pos+0x26d/0x310 [ 356.430865][ T461] ? ksys_write+0x77/0x2c0 [ 356.435269][ T461] ksys_write+0x198/0x2c0 [ 356.439579][ T461] ? __ia32_sys_read+0x90/0x90 [ 356.444322][ T461] ? debug_smp_processor_id+0x17/0x20 [ 356.449673][ T461] __x64_sys_write+0x7b/0x90 [ 356.454251][ T461] do_syscall_64+0x34/0x70 [ 356.458647][ T461] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 356.464518][ T461] RIP: 0033:0x7f5223098259 [ 356.468916][ T461] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 356.489036][ T461] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 356.497429][ T461] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 356.505386][ T461] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 356.513347][ T461] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 356.521415][ T461] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 356.529370][ T461] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 356.540481][ T375] ------------[ cut here ]------------ [ 356.545984][ T375] WARNING: CPU: 0 PID: 375 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 356.555031][ T375] Modules linked in: [ 356.558958][ T375] CPU: 0 PID: 375 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 356.570628][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 356.580705][ T375] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 356.586333][ T375] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 356.606004][ T375] RSP: 0018:ffffc90000b87ba0 EFLAGS: 00010293 [ 356.612095][ T375] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff888106bca780 [ 356.620107][ T375] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 356.628104][ T375] RBP: ffffc90000b87c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 356.636153][ T375] R10: fffff52000170f65 R11: 1ffff92000170f64 R12: dffffc0000000000 [ 356.644162][ T375] R13: ffff8881049b21c0 R14: ffffc90000b87c00 R15: 1ffff92000170f7c [ 356.652164][ T375] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 356.661110][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 356.667708][ T375] CR2: 000055555703b738 CR3: 0000000106987000 CR4: 00000000003506b0 [ 356.675674][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 356.683657][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 356.691647][ T375] Call Trace: [ 356.694929][ T375] ? io_schedule+0x120/0x120 [ 356.699521][ T375] ? vfs_submount+0xb0/0xb0 [ 356.704024][ T375] ? shrink_dentry_list+0x4ec/0x500 [ 356.709241][ T375] ? __kasan_check_write+0x14/0x20 [ 356.714353][ T375] namespace_unlock+0x448/0x4f0 [ 356.719233][ T375] ? umount_tree+0xf50/0xf50 [ 356.723819][ T375] ? __detach_mounts+0x670/0x670 [ 356.728800][ T375] ? selinux_umount+0xf0/0x130 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 356.733600][ T375] ? security_sb_umount+0x9d/0xb0 [ 356.738665][ T375] path_umount+0xf03/0xfb0 [ 356.743083][ T375] ? namespace_unlock+0x4f0/0x4f0 [ 356.748147][ T375] ? user_path_at_empty+0x40/0x50 [ 356.753175][ T375] __x64_sys_umount+0x122/0x170 [ 356.758069][ T375] ? path_umount+0xfb0/0xfb0 [ 356.762666][ T375] ? debug_smp_processor_id+0x17/0x20 [ 356.768076][ T375] do_syscall_64+0x34/0x70 [ 356.772487][ T375] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 356.778403][ T375] RIP: 0033:0x7f5223099667 [ 356.782807][ T375] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 356.802459][ T375] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 356.810892][ T375] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 356.818881][ T375] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 356.826954][ T375] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 356.834913][ T375] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 356.842953][ T375] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 356.850943][ T375] ---[ end trace 049b4861796392f0 ]--- [ 356.856444][ T375] ------------[ cut here ]------------ [ 356.861945][ T375] WARNING: CPU: 0 PID: 375 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 356.870950][ T375] Modules linked in: [ 356.874852][ T375] CPU: 0 PID: 375 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 356.886704][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 356.896825][ T375] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 356.902441][ T375] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 356.922271][ T375] RSP: 0018:ffffc90000b87ca0 EFLAGS: 00010293 [ 356.928373][ T375] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff888106bca780 [ 356.936334][ T375] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 356.944330][ T375] RBP: ffffc90000b87d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 356.952326][ T375] R10: fffff52000170f85 R11: 1ffff92000170f84 R12: dffffc0000000000 [ 356.960326][ T375] R13: ffff8881049b21c0 R14: ffffc90000b87d00 R15: 1ffff92000170f9c [ 356.968317][ T375] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 356.977258][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 356.983838][ T375] CR2: 000055555703b738 CR3: 0000000106987000 CR4: 00000000003506b0 [ 356.991839][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 356.999834][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 357.007911][ T375] Call Trace: [ 357.011195][ T375] ? lockref_get_or_lock+0x340/0x340 [ 357.016464][ T375] ? umount_tree+0xf50/0xf50 [ 357.021088][ T375] ? vfs_submount+0xb0/0xb0 [ 357.025595][ T375] ? dput+0x2b6/0x320 [ 357.029595][ T375] path_umount+0x1fe/0xfb0 [ 357.034005][ T375] ? namespace_unlock+0x4f0/0x4f0 [ 357.039054][ T375] ? user_path_at_empty+0x40/0x50 [ 357.044069][ T375] __x64_sys_umount+0x122/0x170 [ 357.048946][ T375] ? path_umount+0xfb0/0xfb0 [ 357.053532][ T375] ? debug_smp_processor_id+0x17/0x20 [ 357.058928][ T375] do_syscall_64+0x34/0x70 [ 357.063332][ T375] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 357.069252][ T375] RIP: 0033:0x7f5223099667 [ 357.073662][ T375] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 357.093301][ T375] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 357.101724][ T375] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 357.109720][ T375] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 357.117709][ T375] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 357.125669][ T375] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 executing program executing program [ 357.133670][ T375] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 357.141664][ T375] ---[ end trace 049b4861796392f1 ]--- [ 357.147599][ T487] FAULT_INJECTION: forcing a failure. [ 357.147599][ T487] name failslab, interval 1, probability 0, space 0, times 0 [ 357.160281][ T487] CPU: 0 PID: 487 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 357.171904][ T487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 357.181953][ T487] Call Trace: [ 357.185227][ T487] dump_stack_lvl+0x1e2/0x24b [ 357.189882][ T487] ? panic+0x7d7/0x7d7 [ 357.193931][ T487] ? bfq_pos_tree_add_move+0x43e/0x43e [ 357.199383][ T487] ? find_next_bit+0xd6/0x120 [ 357.204044][ T487] ? cpumask_next+0x11/0x30 [ 357.208622][ T487] dump_stack+0x15/0x17 [ 357.212770][ T487] should_fail+0x3c0/0x510 [ 357.217184][ T487] ? percpu_ref_init+0xd0/0x330 [ 357.222021][ T487] __should_failslab+0x9f/0xe0 [ 357.226768][ T487] should_failslab+0x9/0x20 [ 357.231260][ T487] kmem_cache_alloc_trace+0x3a/0x330 [ 357.236532][ T487] percpu_ref_init+0xd0/0x330 [ 357.241197][ T487] ? cgroup_setup_root+0xea0/0xea0 [ 357.246300][ T487] cgroup_apply_control_enable+0x3a2/0x12f0 [ 357.252195][ T487] cgroup_apply_control+0x93/0x710 [ 357.257296][ T487] ? css_next_child+0x160/0x160 [ 357.262126][ T487] ? release_task_stack+0x4c2/0x660 [ 357.267304][ T487] ? io_schedule+0x120/0x120 [ 357.271873][ T487] ? kernfs_fop_write_iter+0x15e/0x410 [ 357.277312][ T487] ? __kasan_check_write+0x14/0x20 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 357.282407][ T487] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 357.287674][ T487] cgroup_subtree_control_write+0xd19/0x1310 [ 357.293641][ T487] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 357.299625][ T487] ? __kasan_check_write+0x14/0x20 [ 357.304762][ T487] ? _copy_from_iter+0x3fb/0xd60 [ 357.309687][ T487] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 357.315651][ T487] cgroup_file_write+0x28e/0x590 [ 357.320574][ T487] ? cgroup_seqfile_stop+0xc0/0xc0 [ 357.325668][ T487] ? mutex_lock+0xa6/0x110 [ 357.330073][ T487] ? mutex_trylock+0xb0/0xb0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 357.334649][ T487] ? __kasan_check_write+0x14/0x20 [ 357.339748][ T487] kernfs_fop_write_iter+0x2d0/0x410 [ 357.345022][ T487] ? cgroup_seqfile_stop+0xc0/0xc0 [ 357.350115][ T487] vfs_write+0xc1c/0xf40 [ 357.354341][ T487] ? kernel_write+0x3c0/0x3c0 [ 357.359002][ T487] ? mutex_trylock+0xb0/0xb0 [ 357.363591][ T487] ? __fdget_pos+0x26d/0x310 [ 357.368171][ T487] ? ksys_write+0x77/0x2c0 [ 357.372570][ T487] ksys_write+0x198/0x2c0 [ 357.376881][ T487] ? __ia32_sys_read+0x90/0x90 [ 357.381624][ T487] ? debug_smp_processor_id+0x17/0x20 [ 357.386977][ T487] __x64_sys_write+0x7b/0x90 [ 357.391546][ T487] do_syscall_64+0x34/0x70 [ 357.395941][ T487] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 357.401812][ T487] RIP: 0033:0x7f5223098259 [ 357.406205][ T487] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 357.425793][ T487] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 executing program executing program executing program [ 357.434202][ T487] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 357.442181][ T487] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 357.450136][ T487] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 357.458090][ T487] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 357.466044][ T487] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 357.507124][ T469] FAULT_INJECTION: forcing a failure. [ 357.507124][ T469] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 357.520403][ T469] CPU: 1 PID: 469 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 357.532004][ T469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 357.542043][ T469] Call Trace: [ 357.545314][ T469] dump_stack_lvl+0x1e2/0x24b [ 357.549982][ T469] ? bfq_pos_tree_add_move+0x43e/0x43e [ 357.555426][ T469] ? __kasan_check_write+0x14/0x20 [ 357.560518][ T469] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 357.565608][ T469] dump_stack+0x15/0x17 [ 357.569737][ T469] should_fail+0x3c0/0x510 [ 357.574129][ T469] should_fail_alloc_page+0x50/0x60 [ 357.579304][ T469] __alloc_pages_nodemask+0x1c0/0x890 [ 357.584654][ T469] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 357.590786][ T469] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 357.596311][ T469] allocate_slab+0x78/0x540 [ 357.600795][ T469] ___slab_alloc+0x131/0x2e0 [ 357.605365][ T469] ? pids_css_alloc+0x4e/0x120 [ 357.610119][ T469] __slab_alloc+0x63/0xa0 [ 357.614434][ T469] ? pids_css_alloc+0x4e/0x120 [ 357.619185][ T469] kmem_cache_alloc_trace+0x20e/0x330 [ 357.624539][ T469] ? pids_css_alloc+0x4e/0x120 [ 357.629284][ T469] pids_css_alloc+0x4e/0x120 [ 357.633865][ T469] cgroup_apply_control_enable+0x350/0x12f0 [ 357.639737][ T469] cgroup_apply_control+0x93/0x710 [ 357.644840][ T469] ? css_next_child+0x160/0x160 [ 357.649677][ T469] ? io_schedule+0x120/0x120 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 357.654252][ T469] ? kernfs_fop_write_iter+0x15e/0x410 [ 357.659698][ T469] ? __kasan_check_write+0x14/0x20 [ 357.664789][ T469] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 357.670053][ T469] cgroup_subtree_control_write+0xd19/0x1310 [ 357.676016][ T469] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 357.681986][ T469] ? __kasan_check_write+0x14/0x20 [ 357.687081][ T469] ? _copy_from_iter+0x3fb/0xd60 [ 357.692005][ T469] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 357.697973][ T469] cgroup_file_write+0x28e/0x590 [ 357.702896][ T469] ? cgroup_seqfile_stop+0xc0/0xc0 [ 357.708046][ T469] ? mutex_lock+0xa6/0x110 [ 357.712445][ T469] ? mutex_trylock+0xb0/0xb0 [ 357.717014][ T469] ? __kasan_check_write+0x14/0x20 [ 357.722098][ T469] kernfs_fop_write_iter+0x2d0/0x410 [ 357.727364][ T469] ? cgroup_seqfile_stop+0xc0/0xc0 [ 357.732454][ T469] vfs_write+0xc1c/0xf40 [ 357.736851][ T469] ? kernel_write+0x3c0/0x3c0 [ 357.741506][ T469] ? mutex_trylock+0xb0/0xb0 [ 357.746076][ T469] ? __fdget_pos+0x26d/0x310 [ 357.750711][ T469] ? ksys_write+0x77/0x2c0 [ 357.755126][ T469] ksys_write+0x198/0x2c0 [ 357.759443][ T469] ? __ia32_sys_read+0x90/0x90 [ 357.764199][ T469] ? debug_smp_processor_id+0x17/0x20 [ 357.769558][ T469] __x64_sys_write+0x7b/0x90 [ 357.774127][ T469] do_syscall_64+0x34/0x70 [ 357.778705][ T469] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 357.784572][ T469] RIP: 0033:0x7f5223098259 [ 357.788966][ T469] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 357.808557][ T469] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 357.816950][ T469] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 357.824920][ T469] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 357.832875][ T469] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 357.840828][ T469] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 357.848786][ T469] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 357.897170][ T464] FAULT_INJECTION: forcing a failure. [ 357.897170][ T464] name failslab, interval 1, probability 0, space 0, times 0 [ 357.909854][ T464] CPU: 0 PID: 464 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 357.921472][ T464] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 357.931512][ T464] Call Trace: [ 357.934788][ T464] dump_stack_lvl+0x1e2/0x24b [ 357.939448][ T464] ? panic+0x7d7/0x7d7 [ 357.943496][ T464] ? bfq_pos_tree_add_move+0x43e/0x43e [ 357.948932][ T464] ? find_next_bit+0xd6/0x120 [ 357.953590][ T464] ? cpumask_next+0x11/0x30 [ 357.958070][ T464] dump_stack+0x15/0x17 [ 357.962204][ T464] should_fail+0x3c0/0x510 [ 357.966604][ T464] ? percpu_ref_init+0xd0/0x330 [ 357.971443][ T464] __should_failslab+0x9f/0xe0 [ 357.976183][ T464] should_failslab+0x9/0x20 [ 357.980706][ T464] kmem_cache_alloc_trace+0x3a/0x330 [ 357.985976][ T464] percpu_ref_init+0xd0/0x330 [ 357.990637][ T464] ? cgroup_setup_root+0xea0/0xea0 [ 357.995731][ T464] cgroup_apply_control_enable+0x3a2/0x12f0 [ 358.001605][ T464] cgroup_apply_control+0x93/0x710 [ 358.006694][ T464] ? css_next_child+0x160/0x160 [ 358.011521][ T464] ? io_schedule+0x120/0x120 [ 358.016084][ T464] ? kernfs_fop_write_iter+0x15e/0x410 [ 358.021520][ T464] ? __kasan_check_write+0x14/0x20 [ 358.026613][ T464] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 358.031877][ T464] cgroup_subtree_control_write+0xd19/0x1310 [ 358.037833][ T464] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 358.043792][ T464] ? __kasan_check_write+0x14/0x20 [ 358.048882][ T464] ? _copy_from_iter+0x3fb/0xd60 [ 358.053803][ T464] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 358.059768][ T464] cgroup_file_write+0x28e/0x590 [ 358.064684][ T464] ? cgroup_seqfile_stop+0xc0/0xc0 [ 358.069780][ T464] ? mutex_lock+0xa6/0x110 [ 358.074173][ T464] ? mutex_trylock+0xb0/0xb0 [ 358.078741][ T464] ? __kasan_check_write+0x14/0x20 [ 358.083844][ T464] kernfs_fop_write_iter+0x2d0/0x410 [ 358.089104][ T464] ? cgroup_seqfile_stop+0xc0/0xc0 [ 358.094190][ T464] vfs_write+0xc1c/0xf40 [ 358.098410][ T464] ? kernel_write+0x3c0/0x3c0 [ 358.103060][ T464] ? mutex_trylock+0xb0/0xb0 [ 358.107625][ T464] ? __fdget_pos+0x26d/0x310 [ 358.112196][ T464] ? ksys_write+0x77/0x2c0 [ 358.116591][ T464] ksys_write+0x198/0x2c0 [ 358.120906][ T464] ? __ia32_sys_read+0x90/0x90 [ 358.125651][ T464] ? debug_smp_processor_id+0x17/0x20 [ 358.130997][ T464] __x64_sys_write+0x7b/0x90 [ 358.135570][ T464] do_syscall_64+0x34/0x70 [ 358.139964][ T464] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 358.145834][ T464] RIP: 0033:0x7f5223098259 [ 358.150228][ T464] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 358.169815][ T464] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 358.178209][ T464] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 358.186162][ T464] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 358.194114][ T464] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 358.202072][ T464] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 358.210032][ T464] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 358.267003][ T507] FAULT_INJECTION: forcing a failure. [ 358.267003][ T507] name failslab, interval 1, probability 0, space 0, times 0 [ 358.279823][ T507] CPU: 1 PID: 507 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 358.291446][ T507] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 358.301571][ T507] Call Trace: [ 358.304849][ T507] dump_stack_lvl+0x1e2/0x24b [ 358.309508][ T507] ? panic+0x7d7/0x7d7 [ 358.313555][ T507] ? bfq_pos_tree_add_move+0x43e/0x43e [ 358.318994][ T507] ? find_next_bit+0xd6/0x120 [ 358.323648][ T507] ? cpumask_next+0x11/0x30 [ 358.328127][ T507] dump_stack+0x15/0x17 [ 358.332266][ T507] should_fail+0x3c0/0x510 [ 358.336663][ T507] ? percpu_ref_init+0xd0/0x330 [ 358.341500][ T507] __should_failslab+0x9f/0xe0 [ 358.346237][ T507] should_failslab+0x9/0x20 [ 358.350718][ T507] kmem_cache_alloc_trace+0x3a/0x330 [ 358.355979][ T507] percpu_ref_init+0xd0/0x330 [ 358.360634][ T507] ? cgroup_setup_root+0xea0/0xea0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 358.365722][ T507] cgroup_apply_control_enable+0x3a2/0x12f0 [ 358.371597][ T507] cgroup_apply_control+0x93/0x710 [ 358.376690][ T507] ? css_next_child+0x160/0x160 [ 358.381538][ T507] ? io_schedule+0x120/0x120 [ 358.386295][ T507] ? kernfs_fop_write_iter+0x15e/0x410 [ 358.391752][ T507] ? __kasan_check_write+0x14/0x20 [ 358.396849][ T507] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 358.402117][ T507] cgroup_subtree_control_write+0xd19/0x1310 [ 358.408083][ T507] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 358.414063][ T507] ? __kasan_check_write+0x14/0x20 [ 358.419159][ T507] ? _copy_from_iter+0x3fb/0xd60 [ 358.424073][ T507] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 358.430035][ T507] cgroup_file_write+0x28e/0x590 [ 358.434951][ T507] ? cgroup_seqfile_stop+0xc0/0xc0 [ 358.440045][ T507] ? mutex_lock+0xa6/0x110 [ 358.444448][ T507] ? mutex_trylock+0xb0/0xb0 [ 358.449026][ T507] ? __kasan_check_write+0x14/0x20 [ 358.454121][ T507] kernfs_fop_write_iter+0x2d0/0x410 [ 358.459382][ T507] ? cgroup_seqfile_stop+0xc0/0xc0 [ 358.464473][ T507] vfs_write+0xc1c/0xf40 [ 358.468695][ T507] ? kernel_write+0x3c0/0x3c0 [ 358.473353][ T507] ? mutex_trylock+0xb0/0xb0 [ 358.477919][ T507] ? __fdget_pos+0x26d/0x310 [ 358.482486][ T507] ? ksys_write+0x77/0x2c0 [ 358.486897][ T507] ksys_write+0x198/0x2c0 [ 358.491211][ T507] ? __ia32_sys_read+0x90/0x90 [ 358.495957][ T507] ? debug_smp_processor_id+0x17/0x20 [ 358.501319][ T507] __x64_sys_write+0x7b/0x90 [ 358.505920][ T507] do_syscall_64+0x34/0x70 [ 358.510324][ T507] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 358.516212][ T507] RIP: 0033:0x7f5223098259 [ 358.520697][ T507] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 358.540378][ T507] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 358.548778][ T507] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 358.556736][ T507] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 358.564697][ T507] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 358.572652][ T507] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 358.580612][ T507] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 358.627245][ T491] FAULT_INJECTION: forcing a failure. [ 358.627245][ T491] name failslab, interval 1, probability 0, space 0, times 0 [ 358.639866][ T491] CPU: 1 PID: 491 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 358.651467][ T491] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 358.661508][ T491] Call Trace: [ 358.664781][ T491] dump_stack_lvl+0x1e2/0x24b [ 358.669434][ T491] ? panic+0x7d7/0x7d7 [ 358.673484][ T491] ? bfq_pos_tree_add_move+0x43e/0x43e [ 358.678924][ T491] ? find_next_bit+0xd6/0x120 [ 358.683576][ T491] ? cpumask_next+0x11/0x30 [ 358.688059][ T491] dump_stack+0x15/0x17 [ 358.692190][ T491] should_fail+0x3c0/0x510 [ 358.696690][ T491] ? percpu_ref_init+0xd0/0x330 [ 358.701534][ T491] __should_failslab+0x9f/0xe0 [ 358.706284][ T491] should_failslab+0x9/0x20 [ 358.711719][ T491] kmem_cache_alloc_trace+0x3a/0x330 [ 358.717328][ T491] percpu_ref_init+0xd0/0x330 [ 358.721993][ T491] ? cgroup_setup_root+0xea0/0xea0 [ 358.727200][ T491] cgroup_apply_control_enable+0x3a2/0x12f0 [ 358.733081][ T491] cgroup_apply_control+0x93/0x710 [ 358.738184][ T491] ? css_next_child+0x160/0x160 [ 358.743023][ T491] ? io_schedule+0x120/0x120 [ 358.747608][ T491] ? kernfs_fop_write_iter+0x15e/0x410 [ 358.753048][ T491] ? __kasan_check_write+0x14/0x20 [ 358.758145][ T491] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 358.763414][ T491] cgroup_subtree_control_write+0xd19/0x1310 [ 358.769393][ T491] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 358.775365][ T491] ? __kasan_check_write+0x14/0x20 [ 358.780460][ T491] ? _copy_from_iter+0x3fb/0xd60 [ 358.785383][ T491] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 358.791377][ T491] cgroup_file_write+0x28e/0x590 [ 358.796306][ T491] ? cgroup_seqfile_stop+0xc0/0xc0 [ 358.801395][ T491] ? mutex_lock+0xa6/0x110 [ 358.805794][ T491] ? mutex_trylock+0xb0/0xb0 [ 358.810367][ T491] ? __kasan_check_write+0x14/0x20 [ 358.815461][ T491] kernfs_fop_write_iter+0x2d0/0x410 [ 358.820733][ T491] ? cgroup_seqfile_stop+0xc0/0xc0 [ 358.825830][ T491] vfs_write+0xc1c/0xf40 [ 358.830063][ T491] ? kernel_write+0x3c0/0x3c0 [ 358.834721][ T491] ? mutex_trylock+0xb0/0xb0 [ 358.839296][ T491] ? __fdget_pos+0x26d/0x310 [ 358.843874][ T491] ? ksys_write+0x77/0x2c0 [ 358.848270][ T491] ksys_write+0x198/0x2c0 [ 358.852583][ T491] ? __ia32_sys_read+0x90/0x90 [ 358.857341][ T491] ? debug_smp_processor_id+0x17/0x20 [ 358.862707][ T491] __x64_sys_write+0x7b/0x90 [ 358.867303][ T491] do_syscall_64+0x34/0x70 [ 358.871700][ T491] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 358.877572][ T491] RIP: 0033:0x7f5223098259 [ 358.881969][ T491] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 358.901642][ T491] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 358.910069][ T491] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 358.918125][ T491] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 358.928313][ T491] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 358.936268][ T491] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 358.944241][ T491] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 358.997567][ T513] FAULT_INJECTION: forcing a failure. [ 358.997567][ T513] name failslab, interval 1, probability 0, space 0, times 0 [ 359.010423][ T513] CPU: 0 PID: 513 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 359.022133][ T513] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 359.032198][ T513] Call Trace: [ 359.035477][ T513] dump_stack_lvl+0x1e2/0x24b [ 359.040145][ T513] ? panic+0x7d7/0x7d7 [ 359.044213][ T513] ? bfq_pos_tree_add_move+0x43e/0x43e [ 359.049653][ T513] ? find_next_bit+0xd6/0x120 [ 359.054316][ T513] ? cpumask_next+0x11/0x30 [ 359.058805][ T513] dump_stack+0x15/0x17 [ 359.062956][ T513] should_fail+0x3c0/0x510 [ 359.067373][ T513] ? percpu_ref_init+0xd0/0x330 [ 359.072426][ T513] __should_failslab+0x9f/0xe0 [ 359.077174][ T513] should_failslab+0x9/0x20 [ 359.081663][ T513] kmem_cache_alloc_trace+0x3a/0x330 [ 359.086930][ T513] percpu_ref_init+0xd0/0x330 [ 359.091590][ T513] ? cgroup_setup_root+0xea0/0xea0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 359.096687][ T513] cgroup_apply_control_enable+0x3a2/0x12f0 [ 359.102593][ T513] cgroup_apply_control+0x93/0x710 [ 359.107689][ T513] ? css_next_child+0x160/0x160 [ 359.112525][ T513] ? io_schedule+0x120/0x120 [ 359.117108][ T513] ? kernfs_fop_write_iter+0x15e/0x410 [ 359.122558][ T513] ? __kasan_check_write+0x14/0x20 [ 359.127739][ T513] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 359.133004][ T513] cgroup_subtree_control_write+0xd19/0x1310 [ 359.138967][ T513] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 359.144929][ T513] ? __kasan_check_write+0x14/0x20 [ 359.150026][ T513] ? _copy_from_iter+0x3fb/0xd60 [ 359.154948][ T513] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 359.160909][ T513] cgroup_file_write+0x28e/0x590 [ 359.165827][ T513] ? cgroup_seqfile_stop+0xc0/0xc0 [ 359.170932][ T513] ? mutex_lock+0xa6/0x110 [ 359.175341][ T513] ? mutex_trylock+0xb0/0xb0 [ 359.179917][ T513] ? __kasan_check_write+0x14/0x20 [ 359.185011][ T513] kernfs_fop_write_iter+0x2d0/0x410 [ 359.190300][ T513] ? cgroup_seqfile_stop+0xc0/0xc0 [ 359.195390][ T513] vfs_write+0xc1c/0xf40 [ 359.199615][ T513] ? kernel_write+0x3c0/0x3c0 [ 359.204271][ T513] ? mutex_trylock+0xb0/0xb0 [ 359.208865][ T513] ? __fdget_pos+0x26d/0x310 [ 359.213430][ T513] ? ksys_write+0x77/0x2c0 [ 359.217826][ T513] ksys_write+0x198/0x2c0 [ 359.222135][ T513] ? __ia32_sys_read+0x90/0x90 [ 359.226885][ T513] ? debug_smp_processor_id+0x17/0x20 [ 359.232248][ T513] __x64_sys_write+0x7b/0x90 [ 359.236831][ T513] do_syscall_64+0x34/0x70 [ 359.241244][ T513] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 359.247121][ T513] RIP: 0033:0x7f5223098259 [ 359.251514][ T513] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 359.271107][ T513] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 359.279589][ T513] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 359.287548][ T513] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 359.295502][ T513] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 359.303457][ T513] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 359.311437][ T513] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 359.322238][ T374] ------------[ cut here ]------------ [ 359.327745][ T374] WARNING: CPU: 1 PID: 374 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 359.336682][ T374] Modules linked in: [ 359.340580][ T374] CPU: 1 PID: 374 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 359.352217][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 359.362309][ T374] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 359.367960][ T374] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 359.387585][ T374] RSP: 0018:ffffc90000b77ba0 EFLAGS: 00010293 [ 359.393637][ T374] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff8881073a4f00 [ 359.401647][ T374] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 359.409643][ T374] RBP: ffffc90000b77c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 359.417624][ T374] R10: fffff5200016ef65 R11: 1ffff9200016ef64 R12: dffffc0000000000 [ 359.425591][ T374] R13: ffff88810da40c40 R14: ffffc90000b77c00 R15: 1ffff9200016ef7c [ 359.433586][ T374] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 359.442523][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 359.449122][ T374] CR2: 000055555703b738 CR3: 0000000106fe2000 CR4: 00000000003506a0 [ 359.457132][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 359.465102][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 359.473091][ T374] Call Trace: [ 359.476380][ T374] ? io_schedule+0x120/0x120 [ 359.480972][ T374] ? vfs_submount+0xb0/0xb0 [ 359.485463][ T374] ? shrink_dentry_list+0x4ec/0x500 [ 359.490662][ T374] ? __kasan_check_write+0x14/0x20 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 359.495756][ T374] namespace_unlock+0x448/0x4f0 [ 359.500605][ T374] ? umount_tree+0xf50/0xf50 [ 359.505179][ T374] ? __detach_mounts+0x670/0x670 [ 359.510115][ T374] ? selinux_umount+0xf0/0x130 [ 359.514861][ T374] ? security_sb_umount+0x9d/0xb0 [ 359.519941][ T374] path_umount+0xf03/0xfb0 [ 359.524352][ T374] ? namespace_unlock+0x4f0/0x4f0 [ 359.529468][ T374] ? user_path_at_empty+0x40/0x50 [ 359.534478][ T374] __x64_sys_umount+0x122/0x170 [ 359.539327][ T374] ? path_umount+0xfb0/0xfb0 [ 359.543901][ T374] ? debug_smp_processor_id+0x17/0x20 [ 359.549276][ T374] do_syscall_64+0x34/0x70 [ 359.553677][ T374] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 359.559563][ T374] RIP: 0033:0x7f5223099667 [ 359.563964][ T374] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 359.583575][ T374] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 359.591999][ T374] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 359.599976][ T374] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 359.607970][ T374] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 359.615933][ T374] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 359.623917][ T374] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 359.631890][ T374] ---[ end trace 049b4861796392f2 ]--- [ 359.637399][ T374] ------------[ cut here ]------------ [ 359.643035][ T374] WARNING: CPU: 1 PID: 374 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 359.651967][ T374] Modules linked in: [ 359.655868][ T374] CPU: 1 PID: 374 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 359.667527][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 359.677601][ T374] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 359.683222][ T374] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 359.702827][ T374] RSP: 0018:ffffc90000b77ca0 EFLAGS: 00010293 [ 359.708901][ T374] RAX: ffffffff81b68cba RBX: 00000000fffffffc RCX: ffff8881073a4f00 [ 359.716869][ T374] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: 0000000000000000 [ 359.724836][ T374] RBP: ffffc90000b77d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 359.732918][ T374] R10: fffff5200016ef85 R11: 1ffff9200016ef84 R12: dffffc0000000000 [ 359.740926][ T374] R13: ffff88810da40c40 R14: ffffc90000b77d00 R15: 1ffff9200016ef9c [ 359.748920][ T374] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 359.757856][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 359.764430][ T374] CR2: 000055555703b738 CR3: 0000000106fe2000 CR4: 00000000003506a0 [ 359.772409][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 359.780384][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 359.788380][ T374] Call Trace: [ 359.791668][ T374] ? lockref_get_or_lock+0x340/0x340 [ 359.796956][ T374] ? umount_tree+0xf50/0xf50 [ 359.801529][ T374] ? vfs_submount+0xb0/0xb0 [ 359.806017][ T374] ? dput+0x2b6/0x320 [ 359.810002][ T374] path_umount+0x1fe/0xfb0 [ 359.814406][ T374] ? namespace_unlock+0x4f0/0x4f0 [ 359.819432][ T374] ? user_path_at_empty+0x40/0x50 [ 359.824445][ T374] __x64_sys_umount+0x122/0x170 [ 359.829295][ T374] ? path_umount+0xfb0/0xfb0 [ 359.833876][ T374] ? debug_smp_processor_id+0x17/0x20 [ 359.839247][ T374] do_syscall_64+0x34/0x70 [ 359.843649][ T374] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 359.849577][ T374] RIP: 0033:0x7f5223099667 [ 359.853985][ T374] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 359.873597][ T374] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 359.882019][ T374] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 359.889993][ T374] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 executing program [ 359.897964][ T374] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 359.905923][ T374] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 359.913928][ T374] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 359.921912][ T374] ---[ end trace 049b4861796392f3 ]--- [ 359.927542][ T23] audit: type=1400 audit(1649430814.410:91): avc: denied { unlink } for pid=142 comm="syslogd" name="messages.0" dev="tmpfs" ino=2 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [ 359.957069][ T506] FAULT_INJECTION: forcing a failure. [ 359.957069][ T506] name failslab, interval 1, probability 0, space 0, times 0 [ 359.969876][ T506] CPU: 1 PID: 506 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 359.981509][ T506] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 359.991794][ T506] Call Trace: [ 359.995175][ T506] dump_stack_lvl+0x1e2/0x24b [ 359.999854][ T506] ? panic+0x7d7/0x7d7 [ 360.003907][ T506] ? bfq_pos_tree_add_move+0x43e/0x43e [ 360.009351][ T506] ? find_next_bit+0xd6/0x120 [ 360.014010][ T506] ? cpumask_next+0x11/0x30 [ 360.018494][ T506] dump_stack+0x15/0x17 [ 360.022636][ T506] should_fail+0x3c0/0x510 [ 360.027045][ T506] ? percpu_ref_init+0xd0/0x330 [ 360.031881][ T506] __should_failslab+0x9f/0xe0 [ 360.036628][ T506] should_failslab+0x9/0x20 [ 360.041119][ T506] kmem_cache_alloc_trace+0x3a/0x330 [ 360.046390][ T506] percpu_ref_init+0xd0/0x330 [ 360.051067][ T506] ? cgroup_setup_root+0xea0/0xea0 [ 360.056198][ T506] cgroup_apply_control_enable+0x3a2/0x12f0 [ 360.062080][ T506] cgroup_apply_control+0x93/0x710 [ 360.067180][ T506] ? css_next_child+0x160/0x160 [ 360.072014][ T506] ? io_schedule+0x120/0x120 [ 360.076763][ T506] ? kernfs_fop_write_iter+0x15e/0x410 [ 360.082203][ T506] ? __kasan_check_write+0x14/0x20 [ 360.087299][ T506] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 360.092567][ T506] cgroup_subtree_control_write+0xd19/0x1310 [ 360.098530][ T506] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 360.104496][ T506] ? __kasan_check_write+0x14/0x20 [ 360.109596][ T506] ? _copy_from_iter+0x3fb/0xd60 [ 360.114522][ T506] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 360.120484][ T506] cgroup_file_write+0x28e/0x590 [ 360.125405][ T506] ? cgroup_seqfile_stop+0xc0/0xc0 [ 360.130505][ T506] ? mutex_lock+0xa6/0x110 [ 360.134904][ T506] ? mutex_trylock+0xb0/0xb0 [ 360.139498][ T506] ? __kasan_check_write+0x14/0x20 [ 360.144682][ T506] kernfs_fop_write_iter+0x2d0/0x410 [ 360.149951][ T506] ? cgroup_seqfile_stop+0xc0/0xc0 [ 360.155054][ T506] vfs_write+0xc1c/0xf40 [ 360.159280][ T506] ? kernel_write+0x3c0/0x3c0 [ 360.163941][ T506] ? mutex_trylock+0xb0/0xb0 [ 360.168517][ T506] ? __fdget_pos+0x26d/0x310 [ 360.173091][ T506] ? ksys_write+0x77/0x2c0 [ 360.177496][ T506] ksys_write+0x198/0x2c0 [ 360.181835][ T506] ? __ia32_sys_read+0x90/0x90 [ 360.186581][ T506] ? debug_smp_processor_id+0x17/0x20 [ 360.191939][ T506] __x64_sys_write+0x7b/0x90 [ 360.196516][ T506] do_syscall_64+0x34/0x70 [ 360.200918][ T506] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 360.206790][ T506] RIP: 0033:0x7f5223098259 [ 360.211193][ T506] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 360.230784][ T506] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 360.239184][ T506] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 360.247140][ T506] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 360.255185][ T506] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 360.263148][ T506] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 360.271104][ T506] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 360.317100][ T516] FAULT_INJECTION: forcing a failure. [ 360.317100][ T516] name failslab, interval 1, probability 0, space 0, times 0 [ 360.329901][ T516] CPU: 1 PID: 516 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 360.341551][ T516] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 360.351699][ T516] Call Trace: [ 360.354987][ T516] dump_stack_lvl+0x1e2/0x24b [ 360.359640][ T516] ? panic+0x7d7/0x7d7 [ 360.363684][ T516] ? bfq_pos_tree_add_move+0x43e/0x43e [ 360.369125][ T516] ? find_next_bit+0xd6/0x120 [ 360.373894][ T516] ? cpumask_next+0x11/0x30 [ 360.378482][ T516] dump_stack+0x15/0x17 [ 360.382637][ T516] should_fail+0x3c0/0x510 [ 360.387034][ T516] ? percpu_ref_init+0xd0/0x330 [ 360.391866][ T516] __should_failslab+0x9f/0xe0 [ 360.396621][ T516] should_failslab+0x9/0x20 [ 360.401106][ T516] kmem_cache_alloc_trace+0x3a/0x330 [ 360.406373][ T516] percpu_ref_init+0xd0/0x330 [ 360.411052][ T516] ? cgroup_setup_root+0xea0/0xea0 [ 360.416146][ T516] cgroup_apply_control_enable+0x3a2/0x12f0 [ 360.422021][ T516] cgroup_apply_control+0x93/0x710 [ 360.427116][ T516] ? css_next_child+0x160/0x160 [ 360.431949][ T516] ? release_task_stack+0x529/0x660 [ 360.437131][ T516] ? io_schedule+0x120/0x120 [ 360.441705][ T516] ? kernfs_fop_write_iter+0x15e/0x410 [ 360.447149][ T516] ? __kasan_check_write+0x14/0x20 [ 360.452240][ T516] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 360.457503][ T516] cgroup_subtree_control_write+0xd19/0x1310 [ 360.463464][ T516] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 360.469445][ T516] ? __kasan_check_write+0x14/0x20 [ 360.474539][ T516] ? _copy_from_iter+0x3fb/0xd60 [ 360.479457][ T516] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 360.485418][ T516] cgroup_file_write+0x28e/0x590 [ 360.490337][ T516] ? cgroup_seqfile_stop+0xc0/0xc0 [ 360.495441][ T516] ? mutex_lock+0xa6/0x110 [ 360.499864][ T516] ? mutex_trylock+0xb0/0xb0 [ 360.504455][ T516] ? __kasan_check_write+0x14/0x20 [ 360.509545][ T516] kernfs_fop_write_iter+0x2d0/0x410 [ 360.514810][ T516] ? cgroup_seqfile_stop+0xc0/0xc0 [ 360.519900][ T516] vfs_write+0xc1c/0xf40 [ 360.524125][ T516] ? kernel_write+0x3c0/0x3c0 [ 360.528829][ T516] ? mutex_trylock+0xb0/0xb0 [ 360.533663][ T516] ? __fdget_pos+0x26d/0x310 [ 360.538243][ T516] ? ksys_write+0x77/0x2c0 [ 360.542635][ T516] ksys_write+0x198/0x2c0 [ 360.546946][ T516] ? __ia32_sys_read+0x90/0x90 [ 360.551699][ T516] ? debug_smp_processor_id+0x17/0x20 [ 360.557052][ T516] __x64_sys_write+0x7b/0x90 [ 360.561623][ T516] do_syscall_64+0x34/0x70 [ 360.566046][ T516] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 360.571944][ T516] RIP: 0033:0x7f5223098259 [ 360.576355][ T516] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 360.596297][ T516] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 360.604708][ T516] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 360.612671][ T516] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 360.620628][ T516] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 360.628586][ T516] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 360.636543][ T516] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 360.646874][ T375] ------------[ cut here ]------------ [ 360.653880][ T375] WARNING: CPU: 1 PID: 375 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 360.662917][ T375] Modules linked in: [ 360.667023][ T375] CPU: 1 PID: 375 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 360.678674][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 360.688769][ T375] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 360.694423][ T375] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 360.714078][ T375] RSP: 0018:ffffc90000b87ca0 EFLAGS: 00010293 [ 360.720199][ T375] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff888106bca780 [ 360.728243][ T375] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 360.736210][ T375] RBP: ffffc90000b87d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 360.744319][ T375] R10: fffff52000170f85 R11: 1ffff92000170f84 R12: dffffc0000000000 [ 360.752473][ T375] R13: ffff88811db94000 R14: ffffc90000b87d00 R15: 1ffff92000170f9c [ 360.760495][ T375] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 360.769444][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 360.776023][ T375] CR2: 000055555703b738 CR3: 0000000106987000 CR4: 00000000003506a0 [ 360.784026][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 360.792066][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 360.800060][ T375] Call Trace: [ 360.803349][ T375] ? lockref_get_or_lock+0x340/0x340 [ 360.808756][ T375] ? umount_tree+0xf50/0xf50 [ 360.813350][ T375] ? vfs_submount+0xb0/0xb0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 360.817881][ T375] ? dput+0x2b6/0x320 [ 360.821860][ T375] path_umount+0x1fe/0xfb0 [ 360.826281][ T375] ? namespace_unlock+0x4f0/0x4f0 [ 360.831353][ T375] ? user_path_at_empty+0x40/0x50 [ 360.836379][ T375] __x64_sys_umount+0x122/0x170 [ 360.841247][ T375] ? path_umount+0xfb0/0xfb0 [ 360.845838][ T375] ? debug_smp_processor_id+0x17/0x20 [ 360.851278][ T375] do_syscall_64+0x34/0x70 [ 360.855713][ T375] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 360.861727][ T375] RIP: 0033:0x7f5223099667 [ 360.866137][ T375] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 360.885756][ T375] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 360.894211][ T375] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 360.902205][ T375] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 360.910223][ T375] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 360.918224][ T375] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 360.926192][ T375] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 360.934189][ T375] ---[ end trace 049b4861796392f4 ]--- [ 360.939737][ T375] ------------[ cut here ]------------ [ 360.945295][ T375] WARNING: CPU: 0 PID: 375 at fs/namespace.c:1109 cleanup_mnt+0x4c5/0x510 [ 360.953900][ T375] Modules linked in: [ 360.957159][ T525] FAULT_INJECTION: forcing a failure. [ 360.957159][ T525] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 360.958040][ T375] CPU: 0 PID: 375 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 360.971312][ T525] CPU: 1 PID: 525 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 360.982699][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 360.994242][ T525] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 360.994246][ T525] Call Trace: [ 360.994261][ T525] dump_stack_lvl+0x1e2/0x24b [ 360.994270][ T525] ? bfq_pos_tree_add_move+0x43e/0x43e [ 360.994281][ T525] ? __kasan_check_write+0x14/0x20 [ 360.994296][ T525] ? _raw_spin_lock_irq+0xa4/0x1b0 [ 361.004609][ T375] RIP: 0010:cleanup_mnt+0x4c5/0x510 [ 361.014394][ T525] dump_stack+0x15/0x17 [ 361.014403][ T525] should_fail+0x3c0/0x510 [ 361.014414][ T525] should_fail_alloc_page+0x50/0x60 [ 361.014430][ T525] __alloc_pages_nodemask+0x1c0/0x890 [ 361.017814][ T375] Code: 0f a1 ff 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7e 0e b5 ff 48 8b 7d d0 e8 c5 07 05 00 e9 21 fd ff ff e8 6b 0e b5 ff <0f> 0b e9 e5 fc ff ff 48 c7 c1 98 c6 9e 86 80 e1 07 80 c1 03 38 c1 [ 361.022347][ T525] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 361.027789][ T375] RSP: 0018:ffffc90000b87e30 EFLAGS: 00010293 [ 361.032872][ T525] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 361.037960][ T375] [ 361.043124][ T525] allocate_slab+0x78/0x540 [ 361.047264][ T375] RAX: ffffffff81b7a695 RBX: ffffe8ffffd22064 RCX: ffff888106bca780 [ 361.051652][ T525] ___slab_alloc+0x131/0x2e0 [ 361.057595][ T375] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 361.062268][ T525] ? pids_css_alloc+0x4e/0x120 [ 361.082306][ T375] RBP: ffffc90000b87e80 R08: ffffffff81b7a373 R09: 0000000000000003 [ 361.088237][ T525] __slab_alloc+0x63/0xa0 [ 361.088249][ T525] ? pids_css_alloc+0x4e/0x120 [ 361.088259][ T525] kmem_cache_alloc_trace+0x20e/0x330 [ 361.088267][ T525] ? pids_css_alloc+0x4e/0x120 [ 361.088282][ T525] pids_css_alloc+0x4e/0x120 [ 361.094469][ T375] R10: fffff52000170fc5 R11: 1ffff92000170fc4 R12: ffff88811db94068 [ 361.099843][ T525] cgroup_apply_control_enable+0x350/0x12f0 [ 361.099854][ T525] cgroup_apply_control+0x93/0x710 [ 361.099869][ T525] ? css_next_child+0x160/0x160 [ 361.102176][ T375] R13: 0000000000000008 R14: dffffc0000000000 R15: 00000000ffffffff [ 361.106651][ T525] ? release_task_stack+0x56a/0x660 [ 361.106662][ T525] ? io_schedule+0x120/0x120 [ 361.106678][ T525] ? kernfs_fop_write_iter+0x15e/0x410 [ 361.115313][ T375] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 361.119204][ T525] ? __kasan_check_write+0x14/0x20 [ 361.119214][ T525] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 361.119223][ T525] cgroup_subtree_control_write+0xd19/0x1310 [ 361.119238][ T525] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 361.127465][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 361.131951][ T525] ? __kasan_check_write+0x14/0x20 [ 361.140076][ T375] CR2: 00007f52230e1a38 CR3: 0000000106987000 CR4: 00000000003506b0 [ 361.144215][ T525] ? _copy_from_iter+0x3fb/0xd60 [ 361.149129][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 361.154303][ T525] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 361.159214][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 361.163615][ T525] cgroup_file_write+0x28e/0x590 [ 361.171749][ T375] Call Trace: [ 361.177430][ T525] ? cgroup_seqfile_stop+0xc0/0xc0 [ 361.177447][ T525] ? mutex_lock+0xa6/0x110 [ 361.177462][ T525] ? mutex_trylock+0xb0/0xb0 [ 361.182821][ T375] __cleanup_mnt+0x19/0x20 [ 361.187812][ T525] ? __kasan_check_write+0x14/0x20 [ 361.187822][ T525] kernfs_fop_write_iter+0x2d0/0x410 [ 361.187831][ T525] ? cgroup_seqfile_stop+0xc0/0xc0 [ 361.187848][ T525] vfs_write+0xc1c/0xf40 [ 361.195926][ T375] task_work_run+0x147/0x1b0 [ 361.200969][ T525] ? kernel_write+0x3c0/0x3c0 [ 361.200979][ T525] ? mutex_trylock+0xb0/0xb0 [ 361.200995][ T525] ? __fdget_pos+0x26d/0x310 [ 361.205567][ T375] exit_to_user_mode_loop+0xc8/0xe0 [ 361.210988][ T525] ? ksys_write+0x77/0x2c0 [ 361.210997][ T525] ksys_write+0x198/0x2c0 [ 361.211005][ T525] ? __ia32_sys_read+0x90/0x90 [ 361.211016][ T525] ? debug_smp_processor_id+0x17/0x20 [ 361.211032][ T525] __x64_sys_write+0x7b/0x90 [ 361.220688][ T375] syscall_exit_to_user_mode+0x77/0xa0 [ 361.225031][ T525] do_syscall_64+0x34/0x70 [ 361.230462][ T375] do_syscall_64+0x40/0x70 [ 361.236251][ T525] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 361.242385][ T375] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 361.248769][ T525] RIP: 0033:0x7f5223098259 [ 361.248779][ T525] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 361.248785][ T525] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 361.254167][ T375] RIP: 0033:0x7f5223099667 [ 361.261836][ T525] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 361.261842][ T525] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 361.261848][ T525] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 361.261853][ T525] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 361.261859][ T525] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 361.484866][ T375] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 361.484943][ T373] ------------[ cut here ]------------ [ 361.504502][ T375] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 361.509978][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 361.509982][ T373] Modules linked in: [ 361.509996][ T373] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 361.510008][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 361.518791][ T375] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5223099667 [ 361.527469][ T373] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 361.531389][ T375] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 361.542988][ T373] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 361.553156][ T375] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 361.561091][ T373] RSP: 0018:ffffc90000b67ca0 EFLAGS: 00010293 [ 361.566847][ T375] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 361.574671][ T373] [ 361.574680][ T373] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a62c0 [ 361.574687][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 361.574693][ T373] RBP: ffffc90000b67d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 361.574707][ T373] R10: fffff5200016cf85 R11: 1ffff9200016cf84 R12: dffffc0000000000 [ 361.594382][ T375] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 361.602291][ T373] R13: ffff88811db95340 R14: ffffc90000b67d00 R15: 1ffff9200016cf9c [ 361.602300][ T373] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 361.602306][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 361.602312][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506a0 [ 361.602321][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 361.602328][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 361.602337][ T373] Call Trace: [ 361.630987][ T375] ---[ end trace 049b4861796392f5 ]--- [ 361.634625][ T373] ? lockref_get_or_lock+0x340/0x340 [ 361.634642][ T373] ? umount_tree+0xf50/0xf50 [ 361.724881][ T373] ? vfs_submount+0xb0/0xb0 [ 361.729382][ T373] ? dput+0x2b6/0x320 [ 361.733353][ T373] path_umount+0x1fe/0xfb0 [ 361.737767][ T373] ? namespace_unlock+0x4f0/0x4f0 [ 361.742776][ T373] ? user_path_at_empty+0x40/0x50 [ 361.747800][ T373] __x64_sys_umount+0x122/0x170 [ 361.752636][ T373] ? path_umount+0xfb0/0xfb0 [ 361.757239][ T373] ? debug_smp_processor_id+0x17/0x20 [ 361.762599][ T373] do_syscall_64+0x34/0x70 [ 361.767047][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 361.772936][ T373] RIP: 0033:0x7f5223099667 [ 361.777353][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 361.796991][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 361.805393][ T373] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 361.813375][ T373] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 executing program executing program [ 361.821347][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 361.829320][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 361.837299][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 361.845261][ T373] ---[ end trace 049b4861796392f6 ]--- [ 361.851122][ T519] FAULT_INJECTION: forcing a failure. [ 361.851122][ T519] name failslab, interval 1, probability 0, space 0, times 0 [ 361.865423][ T519] CPU: 1 PID: 519 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 361.877056][ T519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 361.887096][ T519] Call Trace: [ 361.890372][ T519] dump_stack_lvl+0x1e2/0x24b [ 361.895138][ T519] ? panic+0x7d7/0x7d7 [ 361.899187][ T519] ? bfq_pos_tree_add_move+0x43e/0x43e [ 361.904626][ T519] ? find_next_bit+0xd6/0x120 [ 361.909299][ T519] ? cpumask_next+0x11/0x30 [ 361.913797][ T519] dump_stack+0x15/0x17 [ 361.917937][ T519] should_fail+0x3c0/0x510 [ 361.922366][ T519] ? percpu_ref_init+0xd0/0x330 [ 361.927212][ T519] __should_failslab+0x9f/0xe0 [ 361.931974][ T519] should_failslab+0x9/0x20 [ 361.936457][ T519] kmem_cache_alloc_trace+0x3a/0x330 [ 361.941783][ T519] percpu_ref_init+0xd0/0x330 [ 361.946464][ T519] ? cgroup_setup_root+0xea0/0xea0 [ 361.951558][ T519] cgroup_apply_control_enable+0x3a2/0x12f0 [ 361.957436][ T519] cgroup_apply_control+0x93/0x710 [ 361.962530][ T519] ? css_next_child+0x160/0x160 [ 361.967361][ T519] ? release_task_stack+0x529/0x660 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 361.972542][ T519] ? io_schedule+0x120/0x120 [ 361.977113][ T519] ? kernfs_fop_write_iter+0x15e/0x410 [ 361.982550][ T519] ? __kasan_check_write+0x14/0x20 [ 361.987991][ T519] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 361.993264][ T519] cgroup_subtree_control_write+0xd19/0x1310 [ 361.999285][ T519] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 362.005249][ T519] ? __kasan_check_write+0x14/0x20 [ 362.010344][ T519] ? _copy_from_iter+0x3fb/0xd60 [ 362.015283][ T519] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 362.021256][ T519] cgroup_file_write+0x28e/0x590 [ 362.026178][ T519] ? cgroup_seqfile_stop+0xc0/0xc0 [ 362.031287][ T519] ? mutex_lock+0xa6/0x110 [ 362.035694][ T519] ? mutex_trylock+0xb0/0xb0 [ 362.040267][ T519] ? __kasan_check_write+0x14/0x20 [ 362.045380][ T519] kernfs_fop_write_iter+0x2d0/0x410 [ 362.050653][ T519] ? cgroup_seqfile_stop+0xc0/0xc0 [ 362.055779][ T519] vfs_write+0xc1c/0xf40 [ 362.060003][ T519] ? kernel_write+0x3c0/0x3c0 [ 362.064663][ T519] ? mutex_trylock+0xb0/0xb0 [ 362.069263][ T519] ? __fdget_pos+0x26d/0x310 [ 362.073843][ T519] ? ksys_write+0x77/0x2c0 [ 362.078240][ T519] ksys_write+0x198/0x2c0 [ 362.082550][ T519] ? __ia32_sys_read+0x90/0x90 [ 362.087297][ T519] ? debug_smp_processor_id+0x17/0x20 [ 362.092804][ T519] __x64_sys_write+0x7b/0x90 [ 362.097385][ T519] do_syscall_64+0x34/0x70 [ 362.101785][ T519] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 362.107666][ T519] RIP: 0033:0x7f5223098259 [ 362.112078][ T519] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 362.131672][ T519] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 362.140072][ T519] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 362.148032][ T519] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 362.155992][ T519] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 362.163951][ T519] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 362.171914][ T519] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 362.183743][ T372] ------------[ cut here ]------------ [ 362.189295][ T372] WARNING: CPU: 1 PID: 372 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 362.198338][ T372] Modules linked in: [ 362.202227][ T372] CPU: 1 PID: 372 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 362.213860][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 362.223946][ T372] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 362.229593][ T372] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 362.249200][ T372] RSP: 0018:ffffc90000b57ca0 EFLAGS: 00010293 [ 362.255261][ T372] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a0000 [ 362.263239][ T372] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 362.271211][ T372] RBP: ffffc90000b57d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 362.279176][ T372] R10: fffff5200016af85 R11: 1ffff9200016af84 R12: dffffc0000000000 [ 362.287145][ T372] R13: ffff88810da40380 R14: ffffc90000b57d00 R15: 1ffff9200016af9c [ 362.295135][ T372] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 362.304065][ T372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 362.310654][ T372] CR2: 00007ffce9804ff8 CR3: 0000000119876000 CR4: 00000000003506a0 [ 362.318623][ T372] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 362.326590][ T372] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 362.334565][ T372] Call Trace: [ 362.337854][ T372] ? lockref_get_or_lock+0x340/0x340 [ 362.343125][ T372] ? umount_tree+0xf50/0xf50 [ 362.347706][ T372] ? vfs_submount+0xb0/0xb0 [ 362.352188][ T372] ? dput+0x2b6/0x320 [ 362.356151][ T372] path_umount+0x1fe/0xfb0 [ 362.360560][ T372] ? namespace_unlock+0x4f0/0x4f0 [ 362.365569][ T372] ? user_path_at_empty+0x40/0x50 [ 362.370602][ T372] __x64_sys_umount+0x122/0x170 [ 362.375433][ T372] ? path_umount+0xfb0/0xfb0 [ 362.380025][ T372] ? debug_smp_processor_id+0x17/0x20 [ 362.385817][ T372] do_syscall_64+0x34/0x70 [ 362.390247][ T372] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 362.396117][ T372] RIP: 0033:0x7f5223099667 [ 362.400545][ T372] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 362.420145][ T372] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 362.428597][ T372] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 362.436650][ T372] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 362.444611][ T372] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 362.452689][ T372] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 362.460677][ T372] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 362.468643][ T372] ---[ end trace 049b4861796392f7 ]--- executing program [ 362.481761][ T372] ------------[ cut here ]------------ [ 362.488421][ T534] FAULT_INJECTION: forcing a failure. [ 362.488421][ T534] name failslab, interval 1, probability 0, space 0, times 0 [ 362.488527][ T372] WARNING: CPU: 1 PID: 372 at fs/namespace.c:1109 cleanup_mnt+0x4c5/0x510 [ 362.502597][ T534] CPU: 0 PID: 534 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 362.509875][ T372] Modules linked in: [ 362.521144][ T534] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 362.521148][ T534] Call Trace: [ 362.521166][ T534] dump_stack_lvl+0x1e2/0x24b [ 362.521176][ T534] ? bfq_pos_tree_add_move+0x43e/0x43e [ 362.521190][ T534] dump_stack+0x15/0x17 [ 362.521207][ T534] should_fail+0x3c0/0x510 [ 362.525108][ T372] [ 362.535152][ T534] ? pids_css_alloc+0x4e/0x120 [ 362.535164][ T534] __should_failslab+0x9f/0xe0 [ 362.535181][ T534] should_failslab+0x9/0x20 [ 362.538489][ T372] CPU: 1 PID: 372 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 362.543098][ T534] kmem_cache_alloc_trace+0x3a/0x330 [ 362.543114][ T534] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 362.548592][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 362.552682][ T534] pids_css_alloc+0x4e/0x120 [ 362.552694][ T534] cgroup_apply_control_enable+0x350/0x12f0 [ 362.552710][ T534] cgroup_apply_control+0x93/0x710 [ 362.557146][ T372] RIP: 0010:cleanup_mnt+0x4c5/0x510 [ 362.559412][ T534] ? css_next_child+0x160/0x160 [ 362.559420][ T534] ? stack_trace_save+0x12d/0x1f0 [ 362.559436][ T534] ? io_schedule+0x120/0x120 [ 362.564202][ T372] Code: 0f a1 ff 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7e 0e b5 ff 48 8b 7d d0 e8 c5 07 05 00 e9 21 fd ff ff e8 6b 0e b5 ff <0f> 0b e9 e5 fc ff ff 48 c7 c1 98 c6 9e 86 80 e1 07 80 c1 03 38 c1 [ 362.568920][ T534] ? kernfs_fop_write_iter+0x15e/0x410 [ 362.568930][ T534] ? __kasan_check_write+0x14/0x20 [ 362.568948][ T534] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 362.573452][ T372] RSP: 0018:ffffc90000b57e30 EFLAGS: 00010293 [ 362.585288][ T534] cgroup_subtree_control_write+0xd19/0x1310 [ 362.585300][ T534] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 362.585317][ T534] ? __kasan_check_write+0x14/0x20 [ 362.590613][ T372] [ 362.595752][ T534] ? _copy_from_iter+0x3fb/0xd60 [ 362.595769][ T534] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 362.605939][ T372] RAX: ffffffff81b7a695 RBX: ffffe8ffffd22064 RCX: ffff8881073a0000 [ 362.610467][ T534] cgroup_file_write+0x28e/0x590 [ 362.610476][ T534] ? cgroup_seqfile_stop+0xc0/0xc0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 362.610493][ T534] ? mutex_lock+0xa6/0x110 [ 362.616389][ T372] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 362.621458][ T534] ? mutex_trylock+0xb0/0xb0 [ 362.621470][ T534] ? __kasan_check_write+0x14/0x20 [ 362.621486][ T534] kernfs_fop_write_iter+0x2d0/0x410 [ 362.626705][ T372] RBP: ffffc90000b57e80 R08: ffffffff81b7a373 R09: 0000000000000003 [ 362.631489][ T534] ? cgroup_seqfile_stop+0xc0/0xc0 [ 362.631499][ T534] vfs_write+0xc1c/0xf40 [ 362.631513][ T534] ? slab_free_freelist_hook+0xcc/0x1a0 [ 362.636530][ T372] R10: fffff5200016afc5 R11: 1ffff9200016afc4 R12: ffff88810da403e8 [ 362.641077][ T534] ? kernel_write+0x3c0/0x3c0 [ 362.641088][ T534] ? mutex_trylock+0xb0/0xb0 [ 362.641104][ T534] ? __fdget_pos+0x26d/0x310 [ 362.660747][ T372] R13: 0000000000000008 R14: dffffc0000000000 R15: 00000000ffffffff [ 362.666142][ T534] ? ksys_write+0x77/0x2c0 [ 362.666153][ T534] ksys_write+0x198/0x2c0 [ 362.666169][ T534] ? __ia32_sys_read+0x90/0x90 [ 362.671314][ T372] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 362.676522][ T534] ? debug_smp_processor_id+0x17/0x20 [ 362.676537][ T534] __x64_sys_write+0x7b/0x90 [ 362.682612][ T372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 362.688532][ T534] do_syscall_64+0x34/0x70 [ 362.688542][ T534] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 362.688557][ T534] RIP: 0033:0x7f5223098259 [ 362.694536][ T372] CR2: 00007ffce9804ff8 CR3: 0000000119876000 CR4: 00000000003506a0 [ 362.699603][ T534] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 362.699609][ T534] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 362.699630][ T534] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 362.701961][ T372] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 362.706840][ T534] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 362.706846][ T534] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 executing program executing program [ 362.706851][ T534] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 362.706857][ T534] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 362.948790][ T372] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 362.957270][ T372] Call Trace: [ 362.960565][ T372] __cleanup_mnt+0x19/0x20 [ 362.964966][ T372] task_work_run+0x147/0x1b0 [ 362.970875][ T372] exit_to_user_mode_loop+0xc8/0xe0 [ 362.974426][ T541] FAULT_INJECTION: forcing a failure. [ 362.974426][ T541] name failslab, interval 1, probability 0, space 0, times 0 [ 362.976243][ T372] syscall_exit_to_user_mode+0x77/0xa0 [ 362.988844][ T541] CPU: 0 PID: 541 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 362.994599][ T372] do_syscall_64+0x40/0x70 [ 363.005885][ T541] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 363.005889][ T541] Call Trace: [ 363.005903][ T541] dump_stack_lvl+0x1e2/0x24b [ 363.005911][ T541] ? panic+0x7d7/0x7d7 [ 363.005919][ T541] ? bfq_pos_tree_add_move+0x43e/0x43e [ 363.005929][ T541] ? find_next_bit+0xd6/0x120 [ 363.005938][ T541] ? cpumask_next+0x11/0x30 [ 363.005948][ T541] dump_stack+0x15/0x17 [ 363.005956][ T541] should_fail+0x3c0/0x510 [ 363.005966][ T541] ? percpu_ref_init+0xd0/0x330 [ 363.005977][ T541] __should_failslab+0x9f/0xe0 [ 363.005987][ T541] should_failslab+0x9/0x20 [ 363.005998][ T541] kmem_cache_alloc_trace+0x3a/0x330 [ 363.006008][ T541] percpu_ref_init+0xd0/0x330 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 363.006018][ T541] ? cgroup_setup_root+0xea0/0xea0 [ 363.006035][ T541] cgroup_apply_control_enable+0x3a2/0x12f0 [ 363.011111][ T372] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 363.020468][ T541] cgroup_apply_control+0x93/0x710 [ 363.020479][ T541] ? css_next_child+0x160/0x160 [ 363.020486][ T541] ? stack_trace_save+0x12d/0x1f0 [ 363.020495][ T541] ? io_schedule+0x120/0x120 [ 363.020504][ T541] ? kernfs_fop_write_iter+0x15e/0x410 [ 363.020522][ T541] ? __kasan_check_write+0x14/0x20 [ 363.023849][ T372] RIP: 0033:0x7f5223099667 [ 363.028438][ T541] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 363.028449][ T541] cgroup_subtree_control_write+0xd19/0x1310 [ 363.028459][ T541] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 363.028475][ T541] ? __kasan_check_write+0x14/0x20 [ 363.032565][ T372] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 363.037949][ T541] ? _copy_from_iter+0x3fb/0xd60 [ 363.037958][ T541] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 363.037967][ T541] cgroup_file_write+0x28e/0x590 [ 363.037981][ T541] ? cgroup_seqfile_stop+0xc0/0xc0 [ 363.042676][ T372] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 [ 363.047112][ T541] ? mutex_lock+0xa6/0x110 [ 363.047123][ T541] ? mutex_trylock+0xb0/0xb0 [ 363.047133][ T541] ? __kasan_check_write+0x14/0x20 [ 363.047153][ T541] kernfs_fop_write_iter+0x2d0/0x410 [ 363.051325][ T372] ORIG_RAX: 00000000000000a6 [ 363.055672][ T541] ? cgroup_seqfile_stop+0xc0/0xc0 [ 363.055683][ T541] vfs_write+0xc1c/0xf40 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 363.055699][ T541] ? slab_free_freelist_hook+0xcc/0x1a0 [ 363.060588][ T372] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5223099667 [ 363.065259][ T541] ? kernel_write+0x3c0/0x3c0 [ 363.065270][ T541] ? mutex_trylock+0xb0/0xb0 [ 363.065287][ T541] ? __fdget_pos+0x26d/0x310 [ 363.069832][ T372] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 363.075026][ T541] ? ksys_write+0x77/0x2c0 [ 363.075036][ T541] ksys_write+0x198/0x2c0 [ 363.075045][ T541] ? __ia32_sys_read+0x90/0x90 [ 363.075063][ T541] ? debug_smp_processor_id+0x17/0x20 [ 363.079770][ T372] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 363.085053][ T541] __x64_sys_write+0x7b/0x90 [ 363.085064][ T541] do_syscall_64+0x34/0x70 [ 363.085073][ T541] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 363.085088][ T541] RIP: 0033:0x7f5223098259 [ 363.091020][ T372] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 363.096826][ T541] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 363.096833][ T541] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 363.096847][ T541] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 363.096861][ T541] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 363.102006][ T372] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 363.106775][ T541] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 executing program executing program [ 363.106782][ T541] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 363.106789][ T541] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 363.399134][ T372] ---[ end trace 049b4861796392f8 ]--- [ 363.411183][ T505] FAULT_INJECTION: forcing a failure. [ 363.411183][ T505] name failslab, interval 1, probability 0, space 0, times 0 [ 363.424020][ T505] CPU: 1 PID: 505 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 363.435645][ T505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 363.445687][ T505] Call Trace: [ 363.448975][ T505] dump_stack_lvl+0x1e2/0x24b [ 363.453655][ T505] ? panic+0x7d7/0x7d7 [ 363.457791][ T505] ? bfq_pos_tree_add_move+0x43e/0x43e [ 363.463233][ T505] ? find_next_bit+0xd6/0x120 [ 363.467891][ T505] ? cpumask_next+0x11/0x30 [ 363.472373][ T505] dump_stack+0x15/0x17 [ 363.476511][ T505] should_fail+0x3c0/0x510 [ 363.480905][ T505] ? percpu_ref_init+0xd0/0x330 [ 363.485734][ T505] __should_failslab+0x9f/0xe0 [ 363.490475][ T505] should_failslab+0x9/0x20 [ 363.494961][ T505] kmem_cache_alloc_trace+0x3a/0x330 [ 363.500224][ T505] percpu_ref_init+0xd0/0x330 [ 363.504880][ T505] ? cgroup_setup_root+0xea0/0xea0 [ 363.509981][ T505] cgroup_apply_control_enable+0x3a2/0x12f0 [ 363.515870][ T505] cgroup_apply_control+0x93/0x710 [ 363.520967][ T505] ? css_next_child+0x160/0x160 [ 363.525797][ T505] ? release_task_stack+0x4c2/0x660 [ 363.530980][ T505] ? io_schedule+0x120/0x120 [ 363.535550][ T505] ? kernfs_fop_write_iter+0x15e/0x410 [ 363.540986][ T505] ? __kasan_check_write+0x14/0x20 [ 363.546080][ T505] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 363.551352][ T505] cgroup_subtree_control_write+0xd19/0x1310 [ 363.557314][ T505] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 363.563275][ T505] ? __kasan_check_write+0x14/0x20 [ 363.568374][ T505] ? _copy_from_iter+0x3fb/0xd60 [ 363.573304][ T505] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 363.579272][ T505] cgroup_file_write+0x28e/0x590 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 363.584199][ T505] ? cgroup_seqfile_stop+0xc0/0xc0 [ 363.589290][ T505] ? mutex_lock+0xa6/0x110 [ 363.593687][ T505] ? mutex_trylock+0xb0/0xb0 [ 363.598260][ T505] ? __kasan_check_write+0x14/0x20 [ 363.603360][ T505] kernfs_fop_write_iter+0x2d0/0x410 [ 363.608626][ T505] ? cgroup_seqfile_stop+0xc0/0xc0 [ 363.613721][ T505] vfs_write+0xc1c/0xf40 [ 363.617967][ T505] ? kernel_write+0x3c0/0x3c0 [ 363.622722][ T505] ? mutex_trylock+0xb0/0xb0 [ 363.627329][ T505] ? __fdget_pos+0x26d/0x310 [ 363.631908][ T505] ? ksys_write+0x77/0x2c0 [ 363.636307][ T505] ksys_write+0x198/0x2c0 [ 363.640613][ T505] ? __ia32_sys_read+0x90/0x90 [ 363.645357][ T505] ? debug_smp_processor_id+0x17/0x20 [ 363.650707][ T505] __x64_sys_write+0x7b/0x90 [ 363.655273][ T505] do_syscall_64+0x34/0x70 [ 363.659668][ T505] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 363.665538][ T505] RIP: 0033:0x7f5223098259 [ 363.669935][ T505] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 363.689618][ T505] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 363.698012][ T505] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 363.705966][ T505] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 363.713918][ T505] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 363.721895][ T505] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 executing program [ 363.729867][ T505] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 363.787297][ T510] FAULT_INJECTION: forcing a failure. [ 363.787297][ T510] name failslab, interval 1, probability 0, space 0, times 0 [ 363.800081][ T510] CPU: 1 PID: 510 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 363.811715][ T510] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 363.821765][ T510] Call Trace: [ 363.825044][ T510] dump_stack_lvl+0x1e2/0x24b [ 363.829713][ T510] ? panic+0x7d7/0x7d7 [ 363.833946][ T510] ? bfq_pos_tree_add_move+0x43e/0x43e [ 363.839400][ T510] ? find_next_bit+0xd6/0x120 [ 363.844070][ T510] ? cpumask_next+0x11/0x30 [ 363.848555][ T510] dump_stack+0x15/0x17 [ 363.852692][ T510] should_fail+0x3c0/0x510 [ 363.857246][ T510] ? percpu_ref_init+0xd0/0x330 [ 363.862078][ T510] __should_failslab+0x9f/0xe0 [ 363.866828][ T510] should_failslab+0x9/0x20 [ 363.871321][ T510] kmem_cache_alloc_trace+0x3a/0x330 [ 363.876617][ T510] percpu_ref_init+0xd0/0x330 [ 363.881369][ T510] ? cgroup_setup_root+0xea0/0xea0 [ 363.886461][ T510] cgroup_apply_control_enable+0x3a2/0x12f0 [ 363.892337][ T510] cgroup_apply_control+0x93/0x710 [ 363.897431][ T510] ? css_next_child+0x160/0x160 [ 363.902263][ T510] ? release_task_stack+0x4c2/0x660 [ 363.907440][ T510] ? io_schedule+0x120/0x120 [ 363.912020][ T510] ? kernfs_fop_write_iter+0x15e/0x410 [ 363.917645][ T510] ? __kasan_check_write+0x14/0x20 [ 363.922755][ T510] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 363.928022][ T510] cgroup_subtree_control_write+0xd19/0x1310 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 363.933979][ T510] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 363.940043][ T510] ? __kasan_check_write+0x14/0x20 [ 363.945145][ T510] ? _copy_from_iter+0x3fb/0xd60 [ 363.950071][ T510] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 363.956035][ T510] cgroup_file_write+0x28e/0x590 [ 363.960953][ T510] ? cgroup_seqfile_stop+0xc0/0xc0 [ 363.966174][ T510] ? mutex_lock+0xa6/0x110 [ 363.970572][ T510] ? mutex_trylock+0xb0/0xb0 [ 363.975145][ T510] ? __kasan_check_write+0x14/0x20 [ 363.980235][ T510] kernfs_fop_write_iter+0x2d0/0x410 [ 363.985498][ T510] ? cgroup_seqfile_stop+0xc0/0xc0 [ 363.990586][ T510] vfs_write+0xc1c/0xf40 [ 363.994810][ T510] ? kernel_write+0x3c0/0x3c0 [ 363.999467][ T510] ? mutex_trylock+0xb0/0xb0 [ 364.004040][ T510] ? __fdget_pos+0x26d/0x310 [ 364.008607][ T510] ? ksys_write+0x77/0x2c0 [ 364.013000][ T510] ksys_write+0x198/0x2c0 [ 364.017310][ T510] ? __ia32_sys_read+0x90/0x90 [ 364.022056][ T510] ? debug_smp_processor_id+0x17/0x20 [ 364.027407][ T510] __x64_sys_write+0x7b/0x90 [ 364.031974][ T510] do_syscall_64+0x34/0x70 [ 364.036367][ T510] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 364.042240][ T510] RIP: 0033:0x7f5223098259 [ 364.046639][ T510] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 364.066405][ T510] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 364.074798][ T510] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 364.082751][ T510] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 364.090702][ T510] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 364.098652][ T510] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 364.106610][ T510] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 364.116196][ T376] ------------[ cut here ]------------ [ 364.121705][ T376] WARNING: CPU: 0 PID: 376 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 364.130646][ T376] Modules linked in: [ 364.134540][ T376] CPU: 0 PID: 376 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 364.146188][ T376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 364.156267][ T376] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 364.161912][ T376] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 364.181542][ T376] RSP: 0018:ffffc90000b97ba0 EFLAGS: 00010293 [ 364.187630][ T376] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881077913c0 [ 364.195602][ T376] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 364.203603][ T376] RBP: ffffc90000b97c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 364.211598][ T376] R10: fffff52000172f65 R11: 1ffff92000172f64 R12: dffffc0000000000 [ 364.219598][ T376] R13: ffff888108381c00 R14: ffffc90000b97c00 R15: 1ffff92000172f7c [ 364.227614][ T376] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 364.236535][ T376] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 364.243141][ T376] CR2: 00007ffca92fe8ac CR3: 000000011cee9000 CR4: 00000000003506b0 [ 364.251137][ T376] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 364.259124][ T376] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 364.267110][ T376] Call Trace: [ 364.270388][ T376] ? io_schedule+0x120/0x120 [ 364.274961][ T376] ? vfs_submount+0xb0/0xb0 [ 364.279489][ T376] ? shrink_dentry_list+0x4ec/0x500 [ 364.284777][ T376] ? __kasan_check_write+0x14/0x20 [ 364.289904][ T376] namespace_unlock+0x448/0x4f0 [ 364.294881][ T376] ? umount_tree+0xf50/0xf50 [ 364.299539][ T376] ? __detach_mounts+0x670/0x670 [ 364.304473][ T376] ? selinux_umount+0xf0/0x130 [ 364.309254][ T376] ? security_sb_umount+0x9d/0xb0 [ 364.314279][ T376] path_umount+0xf03/0xfb0 [ 364.318722][ T376] ? namespace_unlock+0x4f0/0x4f0 [ 364.323748][ T376] ? user_path_at_empty+0x40/0x50 [ 364.328797][ T376] __x64_sys_umount+0x122/0x170 [ 364.333654][ T376] ? path_umount+0xfb0/0xfb0 [ 364.338264][ T376] ? debug_smp_processor_id+0x17/0x20 [ 364.343661][ T376] do_syscall_64+0x34/0x70 [ 364.348093][ T376] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 364.354001][ T376] RIP: 0033:0x7f5223099667 [ 364.358436][ T376] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 364.378060][ T376] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 364.386476][ T376] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 364.394487][ T376] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 364.402821][ T376] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 364.410812][ T376] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 364.418806][ T376] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 364.426802][ T376] ---[ end trace 049b4861796392f9 ]--- [ 364.432292][ T376] ------------[ cut here ]------------ [ 364.437787][ T376] WARNING: CPU: 0 PID: 376 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 364.446751][ T376] Modules linked in: [ 364.446994][ T551] FAULT_INJECTION: forcing a failure. [ 364.446994][ T551] name failslab, interval 1, probability 0, space 0, times 0 [ 364.450645][ T376] CPU: 0 PID: 376 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 364.450651][ T376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 364.450668][ T376] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 364.450684][ T376] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 364.463382][ T551] CPU: 1 PID: 551 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 364.474887][ T376] RSP: 0018:ffffc90000b97ca0 EFLAGS: 00010293 [ 364.484900][ T551] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 364.484905][ T551] Call Trace: [ 364.484921][ T551] dump_stack_lvl+0x1e2/0x24b [ 364.484930][ T551] ? bfq_pos_tree_add_move+0x43e/0x43e [ 364.484945][ T551] dump_stack+0x15/0x17 [ 364.490560][ T376] [ 364.510147][ T551] should_fail+0x3c0/0x510 [ 364.510160][ T551] ? pids_css_alloc+0x4e/0x120 [ 364.510179][ T551] __should_failslab+0x9f/0xe0 [ 364.521880][ T376] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff8881077913c0 [ 364.527934][ T551] should_failslab+0x9/0x20 [ 364.527952][ T551] kmem_cache_alloc_trace+0x3a/0x330 [ 364.538008][ T376] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 364.541253][ T551] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 364.545900][ T376] RBP: ffffc90000b97d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 364.551331][ T551] pids_css_alloc+0x4e/0x120 [ 364.551343][ T551] cgroup_apply_control_enable+0x350/0x12f0 [ 364.551360][ T551] cgroup_apply_control+0x93/0x710 [ 364.555488][ T376] R10: fffff52000172f85 R11: 1ffff92000172f84 R12: dffffc0000000000 [ 364.557792][ T551] ? css_next_child+0x160/0x160 [ 364.557801][ T551] ? stack_trace_save+0x12d/0x1f0 [ 364.557817][ T551] ? io_schedule+0x120/0x120 [ 364.562207][ T376] R13: ffff888108381c00 R14: ffffc90000b97d00 R15: 1ffff92000172f9c [ 364.566949][ T551] ? kernfs_fop_write_iter+0x15e/0x410 [ 364.566960][ T551] ? __kasan_check_write+0x14/0x20 [ 364.566977][ T551] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 364.571720][ T376] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 364.579671][ T551] cgroup_subtree_control_write+0xd19/0x1310 [ 364.579682][ T551] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 364.579699][ T551] ? __kasan_check_write+0x14/0x20 [ 364.584191][ T376] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 364.584208][ T376] CR2: 00007ffca92fe8ac CR3: 000000011cee9000 CR4: 00000000003506b0 [ 364.589481][ T551] ? _copy_from_iter+0x3fb/0xd60 [ 364.589492][ T551] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 364.589500][ T551] cgroup_file_write+0x28e/0x590 [ 364.589510][ T551] ? cgroup_seqfile_stop+0xc0/0xc0 [ 364.589519][ T551] ? mutex_lock+0xa6/0x110 [ 364.589527][ T551] ? mutex_trylock+0xb0/0xb0 [ 364.589545][ T551] ? __kasan_check_write+0x14/0x20 [ 364.597533][ T376] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 364.602685][ T551] kernfs_fop_write_iter+0x2d0/0x410 [ 364.610655][ T376] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 364.615208][ T551] ? cgroup_seqfile_stop+0xc0/0xc0 [ 364.621080][ T376] Call Trace: [ 364.626156][ T551] vfs_write+0xc1c/0xf40 [ 364.634132][ T376] ? lockref_get_or_lock+0x340/0x340 [ 364.638934][ T551] ? slab_free_freelist_hook+0xcc/0x1a0 [ 364.638946][ T551] ? kernel_write+0x3c0/0x3c0 [ 364.638963][ T551] ? mutex_trylock+0xb0/0xb0 [ 364.643961][ T376] ? umount_tree+0xf50/0xf50 [ 364.648534][ T551] ? __fdget_pos+0x26d/0x310 [ 364.648544][ T551] ? ksys_write+0x77/0x2c0 [ 364.648553][ T551] ksys_write+0x198/0x2c0 [ 364.648571][ T551] ? __ia32_sys_read+0x90/0x90 [ 364.656537][ T376] ? vfs_submount+0xb0/0xb0 [ 364.661962][ T551] ? debug_smp_processor_id+0x17/0x20 [ 364.661972][ T551] __x64_sys_write+0x7b/0x90 [ 364.661981][ T551] do_syscall_64+0x34/0x70 [ 364.661990][ T551] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 364.661998][ T551] RIP: 0033:0x7f5223098259 [ 364.662015][ T551] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 364.667117][ T376] ? dput+0x2b6/0x320 [ 364.672364][ T551] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 [ 364.681287][ T376] path_umount+0x1fe/0xfb0 [ 364.687217][ T551] ORIG_RAX: 0000000000000001 [ 364.687226][ T551] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 364.687232][ T551] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 364.687246][ T551] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 364.693205][ T376] ? namespace_unlock+0x4f0/0x4f0 [ 364.698277][ T551] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 364.698283][ T551] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 364.937172][ T376] ? user_path_at_empty+0x40/0x50 [ 364.942184][ T376] __x64_sys_umount+0x122/0x170 [ 364.947033][ T376] ? path_umount+0xfb0/0xfb0 [ 364.951608][ T376] ? debug_smp_processor_id+0x17/0x20 [ 364.957023][ T376] do_syscall_64+0x34/0x70 [ 364.961429][ T376] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 364.967324][ T376] RIP: 0033:0x7f5223099667 [ 364.971733][ T376] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 364.991488][ T376] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 364.999909][ T376] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 365.007878][ T376] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 365.015837][ T376] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 365.023812][ T376] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 365.031796][ T376] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 365.039795][ T376] ---[ end trace 049b4861796392fa ]--- [ 365.047831][ T377] ------------[ cut here ]------------ [ 365.053347][ T377] WARNING: CPU: 1 PID: 377 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 365.062295][ T377] Modules linked in: [ 365.066186][ T377] CPU: 1 PID: 377 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 365.077810][ T377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 365.087878][ T377] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 365.093495][ T377] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 365.113107][ T377] RSP: 0018:ffffc90000bd7ca0 EFLAGS: 00010293 [ 365.119205][ T377] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff888107792780 [ 365.127178][ T377] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 365.135138][ T377] RBP: ffffc90000bd7d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 365.143119][ T377] R10: fffff5200017af85 R11: 1ffff9200017af84 R12: dffffc0000000000 [ 365.151125][ T377] R13: ffff88810da41dc0 R14: ffffc90000bd7d00 R15: 1ffff9200017af9c [ 365.159120][ T377] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 365.168056][ T377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 365.174628][ T377] CR2: 000055555703b738 CR3: 000000011cfdb000 CR4: 00000000003506a0 [ 365.182645][ T377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 365.190622][ T377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 365.198604][ T377] Call Trace: [ 365.201893][ T377] ? lockref_get_or_lock+0x340/0x340 [ 365.207199][ T377] ? umount_tree+0xf50/0xf50 [ 365.211787][ T377] ? vfs_submount+0xb0/0xb0 [ 365.216276][ T377] ? dput+0x2b6/0x320 [ 365.220282][ T377] path_umount+0x1fe/0xfb0 [ 365.224698][ T377] ? namespace_unlock+0x4f0/0x4f0 [ 365.229772][ T377] ? user_path_at_empty+0x40/0x50 [ 365.234787][ T377] __x64_sys_umount+0x122/0x170 [ 365.239665][ T377] ? path_umount+0xfb0/0xfb0 [ 365.244248][ T377] ? debug_smp_processor_id+0x17/0x20 [ 365.249631][ T377] do_syscall_64+0x34/0x70 [ 365.254040][ T377] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 365.259943][ T377] RIP: 0033:0x7f5223099667 [ 365.264346][ T377] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 365.284081][ T377] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 executing program [ 365.292511][ T377] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 365.300492][ T377] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 365.308493][ T377] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 365.316453][ T377] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 365.324446][ T377] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 365.332431][ T377] ---[ end trace 049b4861796392fb ]--- [ 365.337982][ T377] ------------[ cut here ]------------ [ 365.344715][ T377] WARNING: CPU: 0 PID: 377 at fs/namespace.c:1109 cleanup_mnt+0x4c5/0x510 [ 365.347504][ T522] FAULT_INJECTION: forcing a failure. [ 365.347504][ T522] name failslab, interval 1, probability 0, space 0, times 0 [ 365.353634][ T377] Modules linked in: [ 365.366047][ T522] CPU: 1 PID: 522 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 365.370188][ T377] CPU: 0 PID: 377 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 365.381487][ T522] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 365.381492][ T522] Call Trace: [ 365.381508][ T522] dump_stack_lvl+0x1e2/0x24b [ 365.381517][ T522] ? panic+0x7d7/0x7d7 [ 365.381526][ T522] ? bfq_pos_tree_add_move+0x43e/0x43e [ 365.381534][ T522] ? find_next_bit+0xd6/0x120 [ 365.381544][ T522] ? cpumask_next+0x11/0x30 [ 365.381552][ T522] dump_stack+0x15/0x17 [ 365.381561][ T522] should_fail+0x3c0/0x510 [ 365.381569][ T522] ? percpu_ref_init+0xd0/0x330 [ 365.381588][ T522] __should_failslab+0x9f/0xe0 [ 365.393773][ T377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 365.403321][ T522] should_failslab+0x9/0x20 [ 365.403332][ T522] kmem_cache_alloc_trace+0x3a/0x330 [ 365.403342][ T522] percpu_ref_init+0xd0/0x330 [ 365.403352][ T522] ? cgroup_setup_root+0xea0/0xea0 [ 365.403367][ T522] cgroup_apply_control_enable+0x3a2/0x12f0 [ 365.403384][ T522] cgroup_apply_control+0x93/0x710 [ 365.407349][ T377] RIP: 0010:cleanup_mnt+0x4c5/0x510 [ 365.411300][ T522] ? css_next_child+0x160/0x160 [ 365.411310][ T522] ? io_schedule+0x120/0x120 [ 365.411319][ T522] ? kernfs_fop_write_iter+0x15e/0x410 [ 365.411336][ T522] ? __kasan_check_write+0x14/0x20 [ 365.415443][ T377] Code: 0f a1 ff 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7e 0e b5 ff 48 8b 7d d0 e8 c5 07 05 00 e9 21 fd ff ff e8 6b 0e b5 ff <0f> 0b e9 e5 fc ff ff 48 c7 c1 98 c6 9e 86 80 e1 07 80 c1 03 38 c1 [ 365.420818][ T522] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 365.420830][ T522] cgroup_subtree_control_write+0xd19/0x1310 [ 365.420839][ T522] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 365.420849][ T522] ? __kasan_check_write+0x14/0x20 [ 365.420872][ T522] ? _copy_from_iter+0x3fb/0xd60 [ 365.426046][ T377] RSP: 0018:ffffc90000bd7e30 EFLAGS: 00010293 [ 365.430010][ T522] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 365.430018][ T522] cgroup_file_write+0x28e/0x590 [ 365.430027][ T522] ? cgroup_seqfile_stop+0xc0/0xc0 [ 365.430037][ T522] ? mutex_lock+0xa6/0x110 [ 365.430046][ T522] ? mutex_trylock+0xb0/0xb0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 365.430065][ T522] ? __kasan_check_write+0x14/0x20 [ 365.434550][ T377] [ 365.438594][ T522] kernfs_fop_write_iter+0x2d0/0x410 [ 365.438604][ T522] ? cgroup_seqfile_stop+0xc0/0xc0 [ 365.438614][ T522] vfs_write+0xc1c/0xf40 [ 365.438624][ T522] ? kernel_write+0x3c0/0x3c0 [ 365.438640][ T522] ? mutex_trylock+0xb0/0xb0 [ 365.443848][ T377] RAX: ffffffff81b7a695 RBX: ffffe8ffffd22064 RCX: ffff888107792780 [ 365.448251][ T522] ? __fdget_pos+0x26d/0x310 [ 365.448261][ T522] ? ksys_write+0x77/0x2c0 [ 365.448268][ T522] ksys_write+0x198/0x2c0 [ 365.448277][ T522] ? __ia32_sys_read+0x90/0x90 [ 365.448289][ T522] ? debug_smp_processor_id+0x17/0x20 [ 365.448304][ T522] __x64_sys_write+0x7b/0x90 [ 365.458755][ T377] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 365.462831][ T522] do_syscall_64+0x34/0x70 [ 365.462842][ T522] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 365.462849][ T522] RIP: 0033:0x7f5223098259 [ 365.462869][ T522] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 365.468488][ T377] RBP: ffffc90000bd7e80 R08: ffffffff81b7a373 R09: 0000000000000003 [ 365.472782][ T522] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 365.472798][ T522] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 365.472804][ T522] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 365.472818][ T522] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 executing program [ 365.478208][ T377] R10: fffff5200017afc5 R11: 1ffff9200017afc4 R12: ffff88810da41e28 [ 365.483767][ T522] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 365.483774][ T522] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 365.765808][ T377] R13: 0000000000000008 R14: dffffc0000000000 R15: 00000000ffffffff [ 365.774253][ T377] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 365.778133][ T554] FAULT_INJECTION: forcing a failure. [ 365.778133][ T554] name failslab, interval 1, probability 0, space 0, times 0 [ 365.783321][ T377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 365.800341][ T554] CPU: 1 PID: 554 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 365.802449][ T377] CR2: 00007f522303bcc0 CR3: 000000011cfdb000 CR4: 00000000003506b0 [ 365.814022][ T554] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 365.814026][ T554] Call Trace: [ 365.814045][ T554] dump_stack_lvl+0x1e2/0x24b [ 365.814054][ T554] ? panic+0x7d7/0x7d7 [ 365.814063][ T554] ? bfq_pos_tree_add_move+0x43e/0x43e [ 365.814072][ T554] ? find_next_bit+0xd6/0x120 [ 365.814091][ T554] ? cpumask_next+0x11/0x30 [ 365.822056][ T377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 365.832086][ T554] dump_stack+0x15/0x17 [ 365.832096][ T554] should_fail+0x3c0/0x510 [ 365.832105][ T554] ? percpu_ref_init+0xd0/0x330 [ 365.832116][ T554] __should_failslab+0x9f/0xe0 [ 365.832126][ T554] should_failslab+0x9/0x20 [ 365.832144][ T554] kmem_cache_alloc_trace+0x3a/0x330 [ 365.835717][ T377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 365.840058][ T554] percpu_ref_init+0xd0/0x330 [ 365.840070][ T554] ? cgroup_setup_root+0xea0/0xea0 [ 365.840087][ T554] cgroup_apply_control_enable+0x3a2/0x12f0 [ 365.844126][ T377] Call Trace: [ 365.849562][ T554] cgroup_apply_control+0x93/0x710 [ 365.849572][ T554] ? css_next_child+0x160/0x160 [ 365.849590][ T554] ? release_task_stack+0x56a/0x660 [ 365.854241][ T377] __cleanup_mnt+0x19/0x20 [ 365.858709][ T554] ? io_schedule+0x120/0x120 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 365.858720][ T554] ? kernfs_fop_write_iter+0x15e/0x410 [ 365.858730][ T554] ? __kasan_check_write+0x14/0x20 [ 365.858739][ T554] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 365.858748][ T554] cgroup_subtree_control_write+0xd19/0x1310 [ 365.858764][ T554] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 365.867782][ T377] task_work_run+0x147/0x1b0 [ 365.870944][ T554] ? __kasan_check_write+0x14/0x20 [ 365.875388][ T377] exit_to_user_mode_loop+0xc8/0xe0 [ 365.880220][ T554] ? _copy_from_iter+0x3fb/0xd60 [ 365.880230][ T554] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 365.880238][ T554] cgroup_file_write+0x28e/0x590 [ 365.880255][ T554] ? cgroup_seqfile_stop+0xc0/0xc0 [ 365.880273][ T554] ? mutex_lock+0xa6/0x110 [ 365.885499][ T377] syscall_exit_to_user_mode+0x77/0xa0 [ 365.889501][ T554] ? mutex_trylock+0xb0/0xb0 [ 365.889512][ T554] ? __kasan_check_write+0x14/0x20 [ 365.889522][ T554] kernfs_fop_write_iter+0x2d0/0x410 [ 365.889531][ T554] ? cgroup_seqfile_stop+0xc0/0xc0 [ 365.889540][ T554] vfs_write+0xc1c/0xf40 [ 365.889556][ T554] ? kernel_write+0x3c0/0x3c0 [ 365.894983][ T377] do_syscall_64+0x40/0x70 [ 365.902775][ T554] ? mutex_trylock+0xb0/0xb0 [ 365.902787][ T554] ? __fdget_pos+0x26d/0x310 [ 365.902795][ T554] ? ksys_write+0x77/0x2c0 [ 365.902810][ T554] ksys_write+0x198/0x2c0 [ 365.908063][ T377] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 365.912560][ T554] ? __ia32_sys_read+0x90/0x90 [ 365.918614][ T377] RIP: 0033:0x7f5223099667 [ 365.921725][ T554] ? debug_smp_processor_id+0x17/0x20 [ 365.927009][ T377] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 365.931646][ T554] __x64_sys_write+0x7b/0x90 [ 365.937056][ T377] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 [ 365.941291][ T554] do_syscall_64+0x34/0x70 [ 365.945853][ T377] ORIG_RAX: 00000000000000a6 [ 365.951284][ T554] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 365.951292][ T554] RIP: 0033:0x7f5223098259 [ 365.951302][ T554] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 365.951308][ T554] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 365.951320][ T554] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 365.951333][ T554] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 365.957018][ T377] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5223099667 executing program [ 365.961684][ T554] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 365.967815][ T377] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 365.973607][ T554] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 365.978341][ T377] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 365.983254][ T554] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 366.232797][ T377] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 executing program executing program [ 366.241236][ T377] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 366.249644][ T548] FAULT_INJECTION: forcing a failure. [ 366.249644][ T548] name failslab, interval 1, probability 0, space 0, times 0 [ 366.262556][ T377] ---[ end trace 049b4861796392fc ]--- [ 366.262819][ T548] CPU: 0 PID: 548 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 366.279738][ T548] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 366.289801][ T548] Call Trace: [ 366.293076][ T548] dump_stack_lvl+0x1e2/0x24b [ 366.297769][ T548] ? panic+0x7d7/0x7d7 [ 366.301916][ T548] ? bfq_pos_tree_add_move+0x43e/0x43e [ 366.307354][ T548] ? find_next_bit+0xd6/0x120 [ 366.312010][ T548] ? cpumask_next+0x11/0x30 [ 366.316510][ T548] dump_stack+0x15/0x17 [ 366.320667][ T548] should_fail+0x3c0/0x510 [ 366.325064][ T548] ? percpu_ref_init+0xd0/0x330 [ 366.329929][ T548] __should_failslab+0x9f/0xe0 [ 366.334688][ T548] should_failslab+0x9/0x20 [ 366.339173][ T548] kmem_cache_alloc_trace+0x3a/0x330 [ 366.344439][ T548] percpu_ref_init+0xd0/0x330 [ 366.349098][ T548] ? cgroup_setup_root+0xea0/0xea0 [ 366.354201][ T548] cgroup_apply_control_enable+0x3a2/0x12f0 [ 366.360077][ T548] cgroup_apply_control+0x93/0x710 [ 366.365269][ T548] ? css_next_child+0x160/0x160 [ 366.370129][ T548] ? io_schedule+0x120/0x120 [ 366.374699][ T548] ? kernfs_fop_write_iter+0x15e/0x410 [ 366.380159][ T548] ? __kasan_check_write+0x14/0x20 [ 366.385261][ T548] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 366.390535][ T548] cgroup_subtree_control_write+0xd19/0x1310 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 366.396493][ T548] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 366.402459][ T548] ? __kasan_check_write+0x14/0x20 [ 366.407660][ T548] ? _copy_from_iter+0x3fb/0xd60 [ 366.412589][ T548] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 366.418553][ T548] cgroup_file_write+0x28e/0x590 [ 366.423477][ T548] ? cgroup_seqfile_stop+0xc0/0xc0 [ 366.428599][ T548] ? mutex_lock+0xa6/0x110 [ 366.433012][ T548] ? mutex_trylock+0xb0/0xb0 [ 366.437601][ T548] ? __kasan_check_write+0x14/0x20 [ 366.442708][ T548] kernfs_fop_write_iter+0x2d0/0x410 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 366.447974][ T548] ? cgroup_seqfile_stop+0xc0/0xc0 [ 366.453076][ T548] vfs_write+0xc1c/0xf40 [ 366.457312][ T548] ? kernel_write+0x3c0/0x3c0 [ 366.461996][ T548] ? mutex_trylock+0xb0/0xb0 [ 366.466566][ T548] ? __fdget_pos+0x26d/0x310 [ 366.471164][ T548] ? ksys_write+0x77/0x2c0 [ 366.475574][ T548] ksys_write+0x198/0x2c0 [ 366.479903][ T548] ? __ia32_sys_read+0x90/0x90 [ 366.484649][ T548] ? debug_smp_processor_id+0x17/0x20 [ 366.490005][ T548] __x64_sys_write+0x7b/0x90 [ 366.494582][ T548] do_syscall_64+0x34/0x70 [ 366.498988][ T548] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 366.504859][ T548] RIP: 0033:0x7f5223098259 [ 366.509256][ T548] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 366.528849][ T548] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 366.537247][ T548] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 executing program executing program executing program [ 366.545203][ T548] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 366.553156][ T548] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 366.561117][ T548] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 366.569097][ T548] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 366.607427][ T549] FAULT_INJECTION: forcing a failure. [ 366.607427][ T549] name failslab, interval 1, probability 0, space 0, times 0 [ 366.620120][ T549] CPU: 0 PID: 549 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 366.631821][ T549] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 366.641866][ T549] Call Trace: [ 366.645142][ T549] dump_stack_lvl+0x1e2/0x24b [ 366.649806][ T549] ? bfq_pos_tree_add_move+0x43e/0x43e [ 366.655280][ T549] dump_stack+0x15/0x17 [ 366.659510][ T549] should_fail+0x3c0/0x510 [ 366.663914][ T549] ? pids_css_alloc+0x4e/0x120 [ 366.668662][ T549] __should_failslab+0x9f/0xe0 [ 366.673522][ T549] should_failslab+0x9/0x20 [ 366.678006][ T549] kmem_cache_alloc_trace+0x3a/0x330 [ 366.683271][ T549] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 366.688448][ T549] pids_css_alloc+0x4e/0x120 [ 366.693043][ T549] cgroup_apply_control_enable+0x350/0x12f0 [ 366.698920][ T549] cgroup_apply_control+0x93/0x710 [ 366.704015][ T549] ? css_next_child+0x160/0x160 [ 366.708932][ T549] ? release_task_stack+0x529/0x660 [ 366.714114][ T549] ? io_schedule+0x120/0x120 [ 366.720177][ T549] ? kernfs_fop_write_iter+0x15e/0x410 [ 366.725645][ T549] ? __kasan_check_write+0x14/0x20 [ 366.730798][ T549] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 366.736180][ T549] cgroup_subtree_control_write+0xd19/0x1310 [ 366.742148][ T549] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 366.748112][ T549] ? __kasan_check_write+0x14/0x20 [ 366.753242][ T549] ? _copy_from_iter+0x3fb/0xd60 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 366.758300][ T549] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 366.764330][ T549] cgroup_file_write+0x28e/0x590 [ 366.769257][ T549] ? cgroup_seqfile_stop+0xc0/0xc0 [ 366.774356][ T549] ? mutex_lock+0xa6/0x110 [ 366.779013][ T549] ? mutex_trylock+0xb0/0xb0 [ 366.783585][ T549] ? __kasan_check_write+0x14/0x20 [ 366.788676][ T549] kernfs_fop_write_iter+0x2d0/0x410 [ 366.794048][ T549] ? cgroup_seqfile_stop+0xc0/0xc0 [ 366.799145][ T549] vfs_write+0xc1c/0xf40 [ 366.803375][ T549] ? kernel_write+0x3c0/0x3c0 [ 366.808037][ T549] ? mutex_trylock+0xb0/0xb0 [ 366.812607][ T549] ? __fdget_pos+0x26d/0x310 [ 366.817197][ T549] ? ksys_write+0x77/0x2c0 [ 366.821600][ T549] ksys_write+0x198/0x2c0 [ 366.825907][ T549] ? __ia32_sys_read+0x90/0x90 [ 366.830653][ T549] ? debug_smp_processor_id+0x17/0x20 [ 366.836011][ T549] __x64_sys_write+0x7b/0x90 [ 366.840604][ T549] do_syscall_64+0x34/0x70 [ 366.845017][ T549] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 366.850901][ T549] RIP: 0033:0x7f5223098259 [ 366.855297][ T549] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 366.874881][ T549] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 366.883274][ T549] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 366.891224][ T549] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 366.899175][ T549] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 366.907126][ T549] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 366.915078][ T549] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 366.925572][ T372] ------------[ cut here ]------------ [ 366.931134][ T372] WARNING: CPU: 1 PID: 372 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 366.940085][ T372] Modules linked in: [ 366.944074][ T372] CPU: 1 PID: 372 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 366.955727][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 366.965855][ T372] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 366.971514][ T372] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 366.991169][ T372] RSP: 0018:ffffc90000b57ba0 EFLAGS: 00010293 [ 366.997253][ T372] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a0000 [ 367.005220][ T372] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 367.013299][ T372] RBP: ffffc90000b57c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 367.021291][ T372] R10: fffff5200016af65 R11: 1ffff9200016af64 R12: dffffc0000000000 [ 367.029281][ T372] R13: ffff88810da40e00 R14: ffffc90000b57c00 R15: 1ffff9200016af7c [ 367.037274][ T372] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 367.046188][ T372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 367.052922][ T372] CR2: 000055555703b738 CR3: 0000000119876000 CR4: 00000000003506a0 [ 367.060918][ T372] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 367.068908][ T372] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 367.077083][ T372] Call Trace: [ 367.080361][ T372] ? io_schedule+0x120/0x120 [ 367.084935][ T372] ? vfs_submount+0xb0/0xb0 [ 367.089453][ T372] ? shrink_dentry_list+0x4ec/0x500 [ 367.094654][ T372] ? __kasan_check_write+0x14/0x20 [ 367.099788][ T372] namespace_unlock+0x448/0x4f0 [ 367.104637][ T372] ? umount_tree+0xf50/0xf50 [ 367.109354][ T372] ? __detach_mounts+0x670/0x670 [ 367.114288][ T372] ? selinux_umount+0xf0/0x130 [ 367.119063][ T372] ? security_sb_umount+0x9d/0xb0 [ 367.124087][ T372] path_umount+0xf03/0xfb0 [ 367.128608][ T372] ? namespace_unlock+0x4f0/0x4f0 [ 367.133635][ T372] ? user_path_at_empty+0x40/0x50 [ 367.138684][ T372] __x64_sys_umount+0x122/0x170 [ 367.143549][ T372] ? path_umount+0xfb0/0xfb0 [ 367.148156][ T372] ? debug_smp_processor_id+0x17/0x20 [ 367.153566][ T372] do_syscall_64+0x34/0x70 [ 367.158012][ T372] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 367.163908][ T372] RIP: 0033:0x7f5223099667 [ 367.168340][ T372] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 367.187987][ T372] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 367.196393][ T372] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 367.204406][ T372] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 367.212427][ T372] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 367.220427][ T372] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 367.228419][ T372] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 367.236382][ T372] ---[ end trace 049b4861796392fd ]--- [ 367.241912][ T372] ------------[ cut here ]------------ [ 367.247403][ T372] WARNING: CPU: 1 PID: 372 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 367.256326][ T372] Modules linked in: [ 367.257048][ T564] FAULT_INJECTION: forcing a failure. [ 367.257048][ T564] name failslab, interval 1, probability 0, space 0, times 0 [ 367.260304][ T372] CPU: 1 PID: 372 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 367.273228][ T564] CPU: 0 PID: 564 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 367.284511][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 367.296091][ T564] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 367.296096][ T564] Call Trace: [ 367.296114][ T564] dump_stack_lvl+0x1e2/0x24b [ 367.296122][ T564] ? panic+0x7d7/0x7d7 [ 367.296139][ T564] ? bfq_pos_tree_add_move+0x43e/0x43e [ 367.306192][ T372] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 367.316213][ T564] ? find_next_bit+0xd6/0x120 [ 367.316223][ T564] ? cpumask_next+0x11/0x30 [ 367.316239][ T564] dump_stack+0x15/0x17 [ 367.319517][ T372] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 367.324244][ T564] should_fail+0x3c0/0x510 [ 367.328296][ T372] RSP: 0018:ffffc90000b57ca0 EFLAGS: 00010293 [ 367.333726][ T564] ? percpu_ref_init+0xd0/0x330 [ 367.339337][ T372] [ 367.343989][ T564] __should_failslab+0x9f/0xe0 [ 367.348473][ T372] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff8881073a0000 [ 367.352600][ T564] should_failslab+0x9/0x20 [ 367.372194][ T372] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 367.376581][ T564] kmem_cache_alloc_trace+0x3a/0x330 [ 367.382633][ T372] RBP: ffffc90000b57d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 367.387470][ T564] percpu_ref_init+0xd0/0x330 [ 367.387489][ T564] ? cgroup_setup_root+0xea0/0xea0 [ 367.389795][ T372] R10: fffff5200016af85 R11: 1ffff9200016af84 R12: dffffc0000000000 [ 367.394535][ T564] cgroup_apply_control_enable+0x3a2/0x12f0 [ 367.402514][ T372] R13: ffff88810da40e00 R14: ffffc90000b57d00 R15: 1ffff9200016af9c [ 367.406981][ T564] cgroup_apply_control+0x93/0x710 [ 367.406996][ T564] ? css_next_child+0x160/0x160 [ 367.414952][ T372] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 367.420206][ T564] ? io_schedule+0x120/0x120 [ 367.420217][ T564] ? kernfs_fop_write_iter+0x15e/0x410 [ 367.420234][ T564] ? __kasan_check_write+0x14/0x20 [ 367.428205][ T372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 367.432877][ T564] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 367.437971][ T372] CR2: 000055555703b738 CR3: 0000000119876000 CR4: 00000000003506a0 [ 367.445919][ T564] cgroup_subtree_control_write+0xd19/0x1310 [ 367.451801][ T372] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 367.459745][ T564] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 367.459763][ T564] ? __kasan_check_write+0x14/0x20 [ 367.464843][ T372] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 367.464853][ T372] Call Trace: [ 367.469694][ T564] ? _copy_from_iter+0x3fb/0xd60 [ 367.469712][ T564] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 367.478638][ T372] ? lockref_get_or_lock+0x340/0x340 [ 367.484667][ T564] cgroup_file_write+0x28e/0x590 [ 367.490129][ T372] ? umount_tree+0xf50/0xf50 [ 367.495204][ T564] ? cgroup_seqfile_stop+0xc0/0xc0 [ 367.501788][ T372] ? vfs_submount+0xb0/0xb0 [ 367.507019][ T564] ? mutex_lock+0xa6/0x110 [ 367.507037][ T564] ? mutex_trylock+0xb0/0xb0 [ 367.515082][ T372] ? dput+0x2b6/0x320 [ 367.521028][ T564] ? __kasan_check_write+0x14/0x20 [ 367.521038][ T564] kernfs_fop_write_iter+0x2d0/0x410 [ 367.521054][ T564] ? cgroup_seqfile_stop+0xc0/0xc0 [ 367.529020][ T372] path_umount+0x1fe/0xfb0 [ 367.534964][ T564] vfs_write+0xc1c/0xf40 [ 367.540066][ T372] ? namespace_unlock+0x4f0/0x4f0 [ 367.548001][ T564] ? kernel_write+0x3c0/0x3c0 [ 367.548020][ T564] ? mutex_trylock+0xb0/0xb0 [ 367.551285][ T372] ? user_path_at_empty+0x40/0x50 [ 367.556210][ T564] ? __fdget_pos+0x26d/0x310 [ 367.562182][ T372] __x64_sys_umount+0x122/0x170 [ 367.567416][ T564] ? ksys_write+0x77/0x2c0 [ 367.567425][ T564] ksys_write+0x198/0x2c0 [ 367.567440][ T564] ? __ia32_sys_read+0x90/0x90 [ 367.572355][ T372] ? path_umount+0xfb0/0xfb0 [ 367.576918][ T564] ? debug_smp_processor_id+0x17/0x20 [ 367.576928][ T564] __x64_sys_write+0x7b/0x90 [ 367.576943][ T564] do_syscall_64+0x34/0x70 [ 367.582030][ T372] ? debug_smp_processor_id+0x17/0x20 [ 367.586507][ T564] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 367.590918][ T372] do_syscall_64+0x34/0x70 [ 367.595466][ T564] RIP: 0033:0x7f5223098259 [ 367.599434][ T372] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 367.604506][ T564] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 367.609782][ T372] RIP: 0033:0x7f5223099667 [ 367.614858][ T564] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 [ 367.619263][ T372] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 367.623468][ T564] ORIG_RAX: 0000000000000001 [ 367.628492][ T372] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 [ 367.633136][ T564] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 367.637709][ T372] ORIG_RAX: 00000000000000a6 [ 367.642701][ T564] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 367.647282][ T372] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 367.652093][ T564] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 executing program executing program [ 367.656492][ T372] RDX: 00007ffca92fe959 RSI: 000000000000000a RDI: 00007ffca92fe950 [ 367.660788][ T564] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 367.660794][ T564] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 367.831210][ T372] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 367.839181][ T372] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 367.847161][ T372] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 367.855118][ T372] ---[ end trace 049b4861796392fe ]--- [ 367.906981][ T543] FAULT_INJECTION: forcing a failure. [ 367.906981][ T543] name failslab, interval 1, probability 0, space 0, times 0 [ 367.919754][ T543] CPU: 1 PID: 543 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 367.931372][ T543] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 367.941409][ T543] Call Trace: [ 367.944690][ T543] dump_stack_lvl+0x1e2/0x24b [ 367.949347][ T543] ? panic+0x7d7/0x7d7 [ 367.953392][ T543] ? bfq_pos_tree_add_move+0x43e/0x43e [ 367.958825][ T543] ? find_next_bit+0xd6/0x120 [ 367.963488][ T543] ? cpumask_next+0x11/0x30 [ 367.967980][ T543] dump_stack+0x15/0x17 [ 367.972117][ T543] should_fail+0x3c0/0x510 [ 367.976519][ T543] ? percpu_ref_init+0xd0/0x330 [ 367.981354][ T543] __should_failslab+0x9f/0xe0 [ 367.986099][ T543] should_failslab+0x9/0x20 [ 367.990584][ T543] kmem_cache_alloc_trace+0x3a/0x330 [ 367.995846][ T543] percpu_ref_init+0xd0/0x330 [ 368.000498][ T543] ? cgroup_setup_root+0xea0/0xea0 [ 368.005586][ T543] cgroup_apply_control_enable+0x3a2/0x12f0 [ 368.011459][ T543] cgroup_apply_control+0x93/0x710 [ 368.016550][ T543] ? css_next_child+0x160/0x160 [ 368.021387][ T543] ? io_schedule+0x120/0x120 [ 368.025966][ T543] ? kernfs_fop_write_iter+0x15e/0x410 [ 368.031481][ T543] ? __kasan_check_write+0x14/0x20 [ 368.036592][ T543] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 368.041880][ T543] cgroup_subtree_control_write+0xd19/0x1310 [ 368.047940][ T543] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 368.053912][ T543] ? __kasan_check_write+0x14/0x20 [ 368.059004][ T543] ? _copy_from_iter+0x3fb/0xd60 [ 368.063926][ T543] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 368.069891][ T543] cgroup_file_write+0x28e/0x590 [ 368.074906][ T543] ? cgroup_seqfile_stop+0xc0/0xc0 [ 368.079996][ T543] ? mutex_lock+0xa6/0x110 [ 368.084408][ T543] ? mutex_trylock+0xb0/0xb0 [ 368.088997][ T543] ? __kasan_check_write+0x14/0x20 [ 368.094095][ T543] kernfs_fop_write_iter+0x2d0/0x410 [ 368.099369][ T543] ? cgroup_seqfile_stop+0xc0/0xc0 [ 368.104461][ T543] vfs_write+0xc1c/0xf40 [ 368.108683][ T543] ? kernel_write+0x3c0/0x3c0 [ 368.113343][ T543] ? mutex_trylock+0xb0/0xb0 [ 368.117911][ T543] ? __fdget_pos+0x26d/0x310 [ 368.122481][ T543] ? ksys_write+0x77/0x2c0 [ 368.126898][ T543] ksys_write+0x198/0x2c0 [ 368.131209][ T543] ? __ia32_sys_read+0x90/0x90 [ 368.135953][ T543] ? debug_smp_processor_id+0x17/0x20 [ 368.141314][ T543] __x64_sys_write+0x7b/0x90 [ 368.145884][ T543] do_syscall_64+0x34/0x70 [ 368.150278][ T543] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 368.156161][ T543] RIP: 0033:0x7f5223098259 [ 368.160556][ T543] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 368.180166][ T543] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 368.188563][ T543] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 368.196518][ T543] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 368.204473][ T543] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 368.212439][ T543] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 368.220397][ T543] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 368.267092][ T575] FAULT_INJECTION: forcing a failure. [ 368.267092][ T575] name failslab, interval 1, probability 0, space 0, times 0 [ 368.279746][ T575] CPU: 0 PID: 575 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 368.291361][ T575] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 368.301416][ T575] Call Trace: [ 368.304723][ T575] dump_stack_lvl+0x1e2/0x24b [ 368.309381][ T575] ? panic+0x7d7/0x7d7 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 368.313434][ T575] ? bfq_pos_tree_add_move+0x43e/0x43e [ 368.318890][ T575] ? find_next_bit+0xd6/0x120 [ 368.323563][ T575] ? cpumask_next+0x11/0x30 [ 368.328052][ T575] dump_stack+0x15/0x17 [ 368.332194][ T575] should_fail+0x3c0/0x510 [ 368.336597][ T575] ? percpu_ref_init+0xd0/0x330 [ 368.341551][ T575] __should_failslab+0x9f/0xe0 [ 368.346300][ T575] should_failslab+0x9/0x20 [ 368.350790][ T575] kmem_cache_alloc_trace+0x3a/0x330 [ 368.356082][ T575] percpu_ref_init+0xd0/0x330 [ 368.360747][ T575] ? cgroup_setup_root+0xea0/0xea0 [ 368.365843][ T575] cgroup_apply_control_enable+0x3a2/0x12f0 [ 368.371719][ T575] cgroup_apply_control+0x93/0x710 [ 368.376818][ T575] ? css_next_child+0x160/0x160 [ 368.381657][ T575] ? io_schedule+0x120/0x120 [ 368.386247][ T575] ? kernfs_fop_write_iter+0x15e/0x410 [ 368.391706][ T575] ? __kasan_check_write+0x14/0x20 [ 368.397249][ T575] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 368.402533][ T575] cgroup_subtree_control_write+0xd19/0x1310 [ 368.408498][ T575] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 368.414458][ T575] ? __kasan_check_write+0x14/0x20 [ 368.419555][ T575] ? _copy_from_iter+0x3fb/0xd60 [ 368.424474][ T575] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 368.430431][ T575] cgroup_file_write+0x28e/0x590 [ 368.436761][ T575] ? cgroup_seqfile_stop+0xc0/0xc0 [ 368.441856][ T575] ? mutex_lock+0xa6/0x110 [ 368.446255][ T575] ? mutex_trylock+0xb0/0xb0 [ 368.450831][ T575] ? __kasan_check_write+0x14/0x20 [ 368.455932][ T575] kernfs_fop_write_iter+0x2d0/0x410 [ 368.461205][ T575] ? cgroup_seqfile_stop+0xc0/0xc0 [ 368.466304][ T575] vfs_write+0xc1c/0xf40 [ 368.470528][ T575] ? kernel_write+0x3c0/0x3c0 [ 368.475184][ T575] ? mutex_trylock+0xb0/0xb0 [ 368.479754][ T575] ? __fdget_pos+0x26d/0x310 [ 368.484322][ T575] ? ksys_write+0x77/0x2c0 [ 368.488723][ T575] ksys_write+0x198/0x2c0 [ 368.493033][ T575] ? __ia32_sys_read+0x90/0x90 [ 368.497862][ T575] ? debug_smp_processor_id+0x17/0x20 [ 368.503229][ T575] __x64_sys_write+0x7b/0x90 [ 368.507802][ T575] do_syscall_64+0x34/0x70 [ 368.512217][ T575] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 368.518105][ T575] RIP: 0033:0x7f5223098259 [ 368.522501][ T575] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 368.542172][ T575] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 368.550577][ T575] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 368.558536][ T575] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 368.566489][ T575] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 368.574443][ T575] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 368.582395][ T575] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 368.617302][ T576] FAULT_INJECTION: forcing a failure. [ 368.617302][ T576] name failslab, interval 1, probability 0, space 0, times 0 [ 368.630061][ T576] CPU: 0 PID: 576 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 368.641671][ T576] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 368.651713][ T576] Call Trace: [ 368.654986][ T576] dump_stack_lvl+0x1e2/0x24b [ 368.659640][ T576] ? bfq_pos_tree_add_move+0x43e/0x43e [ 368.665077][ T576] dump_stack+0x15/0x17 [ 368.669213][ T576] should_fail+0x3c0/0x510 [ 368.673614][ T576] ? pids_css_alloc+0x4e/0x120 [ 368.678360][ T576] __should_failslab+0x9f/0xe0 [ 368.683104][ T576] should_failslab+0x9/0x20 [ 368.687585][ T576] kmem_cache_alloc_trace+0x3a/0x330 [ 368.692846][ T576] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 368.698024][ T576] pids_css_alloc+0x4e/0x120 [ 368.702596][ T576] cgroup_apply_control_enable+0x350/0x12f0 [ 368.708476][ T576] cgroup_apply_control+0x93/0x710 [ 368.713568][ T576] ? css_next_child+0x160/0x160 [ 368.718394][ T576] ? io_schedule+0x120/0x120 [ 368.722989][ T576] ? kernfs_fop_write_iter+0x15e/0x410 [ 368.728447][ T576] ? __kasan_check_write+0x14/0x20 [ 368.733536][ T576] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 368.738806][ T576] cgroup_subtree_control_write+0xd19/0x1310 [ 368.744767][ T576] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 368.750738][ T576] ? __kasan_check_write+0x14/0x20 [ 368.755845][ T576] ? _copy_from_iter+0x3fb/0xd60 [ 368.760759][ T576] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 368.766714][ T576] cgroup_file_write+0x28e/0x590 [ 368.771633][ T576] ? cgroup_seqfile_stop+0xc0/0xc0 [ 368.776727][ T576] ? mutex_lock+0xa6/0x110 [ 368.781125][ T576] ? mutex_trylock+0xb0/0xb0 [ 368.785703][ T576] ? __kasan_check_write+0x14/0x20 [ 368.790791][ T576] kernfs_fop_write_iter+0x2d0/0x410 [ 368.796148][ T576] ? cgroup_seqfile_stop+0xc0/0xc0 [ 368.801240][ T576] vfs_write+0xc1c/0xf40 [ 368.805475][ T576] ? kernel_write+0x3c0/0x3c0 [ 368.810273][ T576] ? mutex_trylock+0xb0/0xb0 [ 368.814847][ T576] ? __fdget_pos+0x26d/0x310 [ 368.819503][ T576] ? ksys_write+0x77/0x2c0 [ 368.823897][ T576] ksys_write+0x198/0x2c0 [ 368.828204][ T576] ? __ia32_sys_read+0x90/0x90 [ 368.832950][ T576] ? debug_smp_processor_id+0x17/0x20 [ 368.838330][ T576] __x64_sys_write+0x7b/0x90 [ 368.842913][ T576] do_syscall_64+0x34/0x70 [ 368.847310][ T576] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 368.853393][ T576] RIP: 0033:0x7f5223098259 [ 368.857785][ T576] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 368.877491][ T576] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 368.885886][ T576] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 368.893943][ T576] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 368.901895][ T576] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 368.909845][ T576] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 executing program [ 368.917796][ T576] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 368.967289][ T581] FAULT_INJECTION: forcing a failure. [ 368.967289][ T581] name failslab, interval 1, probability 0, space 0, times 0 [ 368.979936][ T581] CPU: 0 PID: 581 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 368.991542][ T581] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 369.001783][ T581] Call Trace: [ 369.005064][ T581] dump_stack_lvl+0x1e2/0x24b [ 369.009724][ T581] ? panic+0x7d7/0x7d7 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 369.013780][ T581] ? bfq_pos_tree_add_move+0x43e/0x43e [ 369.019227][ T581] ? find_next_bit+0xd6/0x120 [ 369.023888][ T581] ? cpumask_next+0x11/0x30 [ 369.028371][ T581] dump_stack+0x15/0x17 [ 369.032514][ T581] should_fail+0x3c0/0x510 [ 369.036925][ T581] ? percpu_ref_init+0xd0/0x330 [ 369.041769][ T581] __should_failslab+0x9f/0xe0 [ 369.046518][ T581] should_failslab+0x9/0x20 [ 369.051003][ T581] kmem_cache_alloc_trace+0x3a/0x330 [ 369.056274][ T581] percpu_ref_init+0xd0/0x330 [ 369.060942][ T581] ? cgroup_setup_root+0xea0/0xea0 [ 369.066047][ T581] cgroup_apply_control_enable+0x3a2/0x12f0 [ 369.071936][ T581] cgroup_apply_control+0x93/0x710 [ 369.077036][ T581] ? css_next_child+0x160/0x160 [ 369.081866][ T581] ? release_task_stack+0x529/0x660 [ 369.087044][ T581] ? io_schedule+0x120/0x120 [ 369.091615][ T581] ? kernfs_fop_write_iter+0x15e/0x410 [ 369.097063][ T581] ? __kasan_check_write+0x14/0x20 [ 369.102158][ T581] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 369.107426][ T581] cgroup_subtree_control_write+0xd19/0x1310 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 369.113391][ T581] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 369.119361][ T581] ? __kasan_check_write+0x14/0x20 [ 369.124452][ T581] ? _copy_from_iter+0x3fb/0xd60 [ 369.129368][ T581] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 369.135358][ T581] cgroup_file_write+0x28e/0x590 [ 369.140288][ T581] ? cgroup_seqfile_stop+0xc0/0xc0 [ 369.145386][ T581] ? mutex_lock+0xa6/0x110 [ 369.149812][ T581] ? mutex_trylock+0xb0/0xb0 [ 369.154390][ T581] ? __kasan_check_write+0x14/0x20 [ 369.159510][ T581] kernfs_fop_write_iter+0x2d0/0x410 [ 369.164785][ T581] ? cgroup_seqfile_stop+0xc0/0xc0 [ 369.169884][ T581] vfs_write+0xc1c/0xf40 [ 369.174162][ T581] ? kernel_write+0x3c0/0x3c0 [ 369.178832][ T581] ? mutex_trylock+0xb0/0xb0 [ 369.183410][ T581] ? __fdget_pos+0x26d/0x310 [ 369.187979][ T581] ? ksys_write+0x77/0x2c0 [ 369.192378][ T581] ksys_write+0x198/0x2c0 [ 369.196701][ T581] ? __ia32_sys_read+0x90/0x90 [ 369.201455][ T581] ? debug_smp_processor_id+0x17/0x20 [ 369.206815][ T581] __x64_sys_write+0x7b/0x90 [ 369.211406][ T581] do_syscall_64+0x34/0x70 [ 369.215808][ T581] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 369.221681][ T581] RIP: 0033:0x7f5223098259 [ 369.226076][ T581] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 369.245669][ T581] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 369.254067][ T581] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 executing program [ 369.262037][ T581] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 369.269991][ T581] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 369.277944][ T581] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 369.285907][ T581] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 369.316971][ T578] FAULT_INJECTION: forcing a failure. [ 369.316971][ T578] name failslab, interval 1, probability 0, space 0, times 0 [ 369.329894][ T578] CPU: 1 PID: 578 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 369.341508][ T578] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 369.351543][ T578] Call Trace: [ 369.354838][ T578] dump_stack_lvl+0x1e2/0x24b [ 369.359494][ T578] ? panic+0x7d7/0x7d7 [ 369.363543][ T578] ? bfq_pos_tree_add_move+0x43e/0x43e [ 369.368980][ T578] ? find_next_bit+0xd6/0x120 [ 369.373633][ T578] ? cpumask_next+0x11/0x30 [ 369.378114][ T578] dump_stack+0x15/0x17 [ 369.382248][ T578] should_fail+0x3c0/0x510 [ 369.386645][ T578] ? percpu_ref_init+0xd0/0x330 [ 369.391475][ T578] __should_failslab+0x9f/0xe0 [ 369.396244][ T578] should_failslab+0x9/0x20 [ 369.400746][ T578] kmem_cache_alloc_trace+0x3a/0x330 [ 369.406016][ T578] percpu_ref_init+0xd0/0x330 [ 369.410674][ T578] ? cgroup_setup_root+0xea0/0xea0 [ 369.415767][ T578] cgroup_apply_control_enable+0x3a2/0x12f0 [ 369.421647][ T578] cgroup_apply_control+0x93/0x710 [ 369.426762][ T578] ? css_next_child+0x160/0x160 [ 369.431604][ T578] ? stack_trace_save+0x12d/0x1f0 [ 369.436624][ T578] ? io_schedule+0x120/0x120 [ 369.441202][ T578] ? kernfs_fop_write_iter+0x15e/0x410 [ 369.446655][ T578] ? __kasan_check_write+0x14/0x20 [ 369.451751][ T578] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 369.457019][ T578] cgroup_subtree_control_write+0xd19/0x1310 [ 369.462984][ T578] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 369.468947][ T578] ? __kasan_check_write+0x14/0x20 [ 369.474056][ T578] ? _copy_from_iter+0x3fb/0xd60 [ 369.478992][ T578] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 369.484955][ T578] cgroup_file_write+0x28e/0x590 [ 369.489870][ T578] ? cgroup_seqfile_stop+0xc0/0xc0 [ 369.494957][ T578] ? mutex_lock+0xa6/0x110 [ 369.499378][ T578] ? mutex_trylock+0xb0/0xb0 [ 369.503949][ T578] ? __kasan_check_write+0x14/0x20 [ 369.509041][ T578] kernfs_fop_write_iter+0x2d0/0x410 [ 369.514324][ T578] ? cgroup_seqfile_stop+0xc0/0xc0 [ 369.519419][ T578] vfs_write+0xc1c/0xf40 [ 369.523659][ T578] ? slab_free_freelist_hook+0xcc/0x1a0 [ 369.529185][ T578] ? kernel_write+0x3c0/0x3c0 [ 369.533848][ T578] ? mutex_trylock+0xb0/0xb0 [ 369.538428][ T578] ? __fdget_pos+0x26d/0x310 [ 369.543015][ T578] ? ksys_write+0x77/0x2c0 [ 369.547416][ T578] ksys_write+0x198/0x2c0 [ 369.551745][ T578] ? __ia32_sys_read+0x90/0x90 [ 369.556492][ T578] ? debug_smp_processor_id+0x17/0x20 [ 369.561843][ T578] __x64_sys_write+0x7b/0x90 [ 369.566415][ T578] do_syscall_64+0x34/0x70 [ 369.570813][ T578] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 369.576682][ T578] RIP: 0033:0x7f5223098259 [ 369.581077][ T578] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 369.600662][ T578] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 369.609058][ T578] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 executing program [ 369.617024][ T578] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 369.624989][ T578] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 369.632940][ T578] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 369.640893][ T578] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 369.687127][ T574] FAULT_INJECTION: forcing a failure. [ 369.687127][ T574] name failslab, interval 1, probability 0, space 0, times 0 [ 369.699771][ T574] CPU: 0 PID: 574 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 369.712773][ T574] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 369.722815][ T574] Call Trace: [ 369.726101][ T574] dump_stack_lvl+0x1e2/0x24b [ 369.730763][ T574] ? panic+0x7d7/0x7d7 [ 369.734905][ T574] ? bfq_pos_tree_add_move+0x43e/0x43e [ 369.740544][ T574] ? find_next_bit+0xd6/0x120 [ 369.745213][ T574] ? cpumask_next+0x11/0x30 [ 369.749788][ T574] dump_stack+0x15/0x17 [ 369.753935][ T574] should_fail+0x3c0/0x510 [ 369.758338][ T574] ? percpu_ref_init+0xd0/0x330 [ 369.763176][ T574] __should_failslab+0x9f/0xe0 [ 369.767946][ T574] should_failslab+0x9/0x20 [ 369.772447][ T574] kmem_cache_alloc_trace+0x3a/0x330 [ 369.777718][ T574] percpu_ref_init+0xd0/0x330 [ 369.782383][ T574] ? cgroup_setup_root+0xea0/0xea0 [ 369.787497][ T574] cgroup_apply_control_enable+0x3a2/0x12f0 [ 369.793524][ T574] cgroup_apply_control+0x93/0x710 [ 369.798632][ T574] ? css_next_child+0x160/0x160 [ 369.803469][ T574] ? release_task_stack+0x529/0x660 [ 369.808657][ T574] ? io_schedule+0x120/0x120 [ 369.813241][ T574] ? kernfs_fop_write_iter+0x15e/0x410 [ 369.818690][ T574] ? __kasan_check_write+0x14/0x20 [ 369.823787][ T574] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 369.829056][ T574] cgroup_subtree_control_write+0xd19/0x1310 [ 369.835053][ T574] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 369.841020][ T574] ? __kasan_check_write+0x14/0x20 [ 369.846115][ T574] ? _copy_from_iter+0x3fb/0xd60 [ 369.851052][ T574] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 369.857012][ T574] cgroup_file_write+0x28e/0x590 [ 369.861935][ T574] ? cgroup_seqfile_stop+0xc0/0xc0 [ 369.867026][ T574] ? mutex_lock+0xa6/0x110 [ 369.871423][ T574] ? mutex_trylock+0xb0/0xb0 [ 369.875998][ T574] ? __kasan_check_write+0x14/0x20 [ 369.881310][ T574] kernfs_fop_write_iter+0x2d0/0x410 [ 369.886585][ T574] ? cgroup_seqfile_stop+0xc0/0xc0 [ 369.891684][ T574] vfs_write+0xc1c/0xf40 [ 369.896105][ T574] ? kernel_write+0x3c0/0x3c0 [ 369.900867][ T574] ? mutex_trylock+0xb0/0xb0 [ 369.905449][ T574] ? __fdget_pos+0x26d/0x310 [ 369.910021][ T574] ? ksys_write+0x77/0x2c0 [ 369.914421][ T574] ksys_write+0x198/0x2c0 [ 369.918739][ T574] ? __ia32_sys_read+0x90/0x90 [ 369.923494][ T574] ? debug_smp_processor_id+0x17/0x20 [ 369.928852][ T574] __x64_sys_write+0x7b/0x90 [ 369.933430][ T574] do_syscall_64+0x34/0x70 [ 369.937829][ T574] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 369.943708][ T574] RIP: 0033:0x7f5223098259 [ 369.948115][ T574] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 369.967722][ T574] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 369.976123][ T574] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 executing program [ 369.984084][ T574] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 369.992042][ T574] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 369.999999][ T574] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 370.007958][ T574] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 370.057316][ T590] FAULT_INJECTION: forcing a failure. [ 370.057316][ T590] name failslab, interval 1, probability 0, space 0, times 0 [ 370.070084][ T590] CPU: 1 PID: 590 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 370.081700][ T590] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 370.091873][ T590] Call Trace: [ 370.095171][ T590] dump_stack_lvl+0x1e2/0x24b [ 370.099830][ T590] ? panic+0x7d7/0x7d7 [ 370.103881][ T590] ? bfq_pos_tree_add_move+0x43e/0x43e [ 370.109322][ T590] ? find_next_bit+0xd6/0x120 [ 370.113979][ T590] ? cpumask_next+0x11/0x30 [ 370.118462][ T590] dump_stack+0x15/0x17 [ 370.122604][ T590] should_fail+0x3c0/0x510 [ 370.127002][ T590] ? percpu_ref_init+0xd0/0x330 [ 370.131838][ T590] __should_failslab+0x9f/0xe0 [ 370.136598][ T590] should_failslab+0x9/0x20 [ 370.141097][ T590] kmem_cache_alloc_trace+0x3a/0x330 [ 370.146376][ T590] percpu_ref_init+0xd0/0x330 [ 370.151039][ T590] ? cgroup_setup_root+0xea0/0xea0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 370.156129][ T590] cgroup_apply_control_enable+0x3a2/0x12f0 [ 370.162000][ T590] cgroup_apply_control+0x93/0x710 [ 370.167098][ T590] ? css_next_child+0x160/0x160 [ 370.171935][ T590] ? release_task_stack+0x529/0x660 [ 370.177125][ T590] ? io_schedule+0x120/0x120 [ 370.181707][ T590] ? kernfs_fop_write_iter+0x15e/0x410 [ 370.187145][ T590] ? __kasan_check_write+0x14/0x20 [ 370.192256][ T590] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 370.197707][ T590] cgroup_subtree_control_write+0xd19/0x1310 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 370.203669][ T590] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 370.209648][ T590] ? __kasan_check_write+0x14/0x20 [ 370.214739][ T590] ? _copy_from_iter+0x3fb/0xd60 [ 370.219661][ T590] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 370.225632][ T590] cgroup_file_write+0x28e/0x590 [ 370.230574][ T590] ? cgroup_seqfile_stop+0xc0/0xc0 [ 370.235672][ T590] ? mutex_lock+0xa6/0x110 [ 370.240082][ T590] ? mutex_trylock+0xb0/0xb0 [ 370.244649][ T590] ? __kasan_check_write+0x14/0x20 [ 370.249739][ T590] kernfs_fop_write_iter+0x2d0/0x410 [ 370.255022][ T590] ? cgroup_seqfile_stop+0xc0/0xc0 [ 370.260109][ T590] vfs_write+0xc1c/0xf40 [ 370.264328][ T590] ? kernel_write+0x3c0/0x3c0 [ 370.268982][ T590] ? mutex_trylock+0xb0/0xb0 [ 370.273547][ T590] ? __fdget_pos+0x26d/0x310 [ 370.278123][ T590] ? ksys_write+0x77/0x2c0 [ 370.282526][ T590] ksys_write+0x198/0x2c0 [ 370.286842][ T590] ? __ia32_sys_read+0x90/0x90 [ 370.291597][ T590] ? debug_smp_processor_id+0x17/0x20 [ 370.296946][ T590] __x64_sys_write+0x7b/0x90 [ 370.301519][ T590] do_syscall_64+0x34/0x70 [ 370.305913][ T590] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 370.311791][ T590] RIP: 0033:0x7f5223098259 [ 370.316194][ T590] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 370.335782][ T590] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 370.344176][ T590] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 executing program [ 370.352127][ T590] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 370.360085][ T590] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 370.368046][ T590] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 370.376018][ T590] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 370.441326][ T598] FAULT_INJECTION: forcing a failure. [ 370.441326][ T598] name failslab, interval 1, probability 0, space 0, times 0 [ 370.454073][ T598] CPU: 0 PID: 598 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 370.465704][ T598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 370.475834][ T598] Call Trace: [ 370.479111][ T598] dump_stack_lvl+0x1e2/0x24b [ 370.483780][ T598] ? panic+0x7d7/0x7d7 [ 370.487825][ T598] ? bfq_pos_tree_add_move+0x43e/0x43e [ 370.493273][ T598] ? selinux_kernfs_init_security+0x1a8/0x760 [ 370.499326][ T598] dump_stack+0x15/0x17 [ 370.503457][ T598] should_fail+0x3c0/0x510 [ 370.507851][ T598] __should_failslab+0x9f/0xe0 [ 370.512593][ T598] should_failslab+0x9/0x20 [ 370.517080][ T598] kmem_cache_alloc+0x3f/0x300 [ 370.521935][ T598] ? __kernfs_new_node+0xdb/0x6e0 [ 370.526955][ T598] __kernfs_new_node+0xdb/0x6e0 [ 370.531788][ T598] ? is_module_text_address+0xe1/0x140 [ 370.537263][ T598] ? kernfs_new_node+0x170/0x170 [ 370.542187][ T598] ? ptr_to_hashval+0x60/0x60 [ 370.546849][ T598] ? snprintf+0xd6/0x120 [ 370.551078][ T598] ? __kasan_check_write+0x14/0x20 [ 370.556175][ T598] ? mutex_unlock+0x1d/0x40 [ 370.560662][ T598] kernfs_new_node+0x97/0x170 [ 370.565322][ T598] __kernfs_create_file+0x4a/0x270 [ 370.570416][ T598] cgroup_addrm_files+0xab8/0xfe0 [ 370.575425][ T598] ? ____kasan_kmalloc+0xdc/0x110 [ 370.580434][ T598] ? __kasan_kmalloc+0x9/0x10 [ 370.585095][ T598] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 370.590629][ T598] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 370.596767][ T598] ? delete_node+0x759/0x7b0 [ 370.601341][ T598] ? __kasan_check_read+0x11/0x20 [ 370.606350][ T598] ? idr_replace+0x1c4/0x230 [ 370.610926][ T598] ? idr_get_next+0x4b0/0x4b0 [ 370.615590][ T598] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 370.620598][ T598] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 370.625785][ T598] css_populate_dir+0x137/0x370 [ 370.630623][ T598] cgroup_apply_control_enable+0x8b9/0x12f0 [ 370.636504][ T598] cgroup_apply_control+0x93/0x710 [ 370.641600][ T598] ? css_next_child+0x160/0x160 [ 370.646438][ T598] ? stack_trace_save+0x12d/0x1f0 [ 370.651447][ T598] ? io_schedule+0x120/0x120 [ 370.656023][ T598] ? kernfs_fop_write_iter+0x15e/0x410 [ 370.661471][ T598] ? __kasan_check_write+0x14/0x20 [ 370.666588][ T598] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 370.671875][ T598] cgroup_subtree_control_write+0xd19/0x1310 [ 370.677846][ T598] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 370.683897][ T598] ? __kasan_check_write+0x14/0x20 [ 370.688993][ T598] ? _copy_from_iter+0x3fb/0xd60 [ 370.694007][ T598] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 370.699989][ T598] cgroup_file_write+0x28e/0x590 [ 370.704911][ T598] ? cgroup_seqfile_stop+0xc0/0xc0 [ 370.710002][ T598] ? mutex_lock+0xa6/0x110 [ 370.714402][ T598] ? mutex_trylock+0xb0/0xb0 [ 370.718974][ T598] ? __kasan_check_write+0x14/0x20 [ 370.724070][ T598] kernfs_fop_write_iter+0x2d0/0x410 [ 370.729435][ T598] ? cgroup_seqfile_stop+0xc0/0xc0 [ 370.734530][ T598] vfs_write+0xc1c/0xf40 [ 370.738760][ T598] ? slab_free_freelist_hook+0xcc/0x1a0 [ 370.744387][ T598] ? kernel_write+0x3c0/0x3c0 [ 370.749052][ T598] ? mutex_trylock+0xb0/0xb0 [ 370.753630][ T598] ? __fdget_pos+0x26d/0x310 [ 370.758205][ T598] ? ksys_write+0x77/0x2c0 [ 370.762609][ T598] ksys_write+0x198/0x2c0 [ 370.766980][ T598] ? __ia32_sys_read+0x90/0x90 [ 370.771733][ T598] ? debug_smp_processor_id+0x17/0x20 [ 370.777113][ T598] __x64_sys_write+0x7b/0x90 [ 370.781692][ T598] do_syscall_64+0x34/0x70 [ 370.786106][ T598] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 370.792021][ T598] RIP: 0033:0x7f5223098259 [ 370.796430][ T598] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 370.816039][ T598] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 370.824446][ T598] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 370.832403][ T598] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 370.840368][ T598] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 370.848369][ T598] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 370.856349][ T598] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 370.865581][ T598] cgroup: cgroup_addrm_files: failed to add events, err=-12 [ 370.897363][ T593] FAULT_INJECTION: forcing a failure. [ 370.897363][ T593] name failslab, interval 1, probability 0, space 0, times 0 [ 370.910045][ T593] CPU: 1 PID: 593 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 370.921664][ T593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 370.931797][ T593] Call Trace: [ 370.935085][ T593] dump_stack_lvl+0x1e2/0x24b [ 370.939744][ T593] ? bfq_pos_tree_add_move+0x43e/0x43e write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 370.945190][ T593] ? selinux_kernfs_init_security+0x1a8/0x760 [ 370.951241][ T593] dump_stack+0x15/0x17 [ 370.955513][ T593] should_fail+0x3c0/0x510 [ 370.959920][ T593] ? __kernfs_new_node+0x99/0x6e0 [ 370.964947][ T593] __should_failslab+0x9f/0xe0 [ 370.969690][ T593] should_failslab+0x9/0x20 [ 370.974191][ T593] __kmalloc_track_caller+0x5f/0x350 [ 370.979473][ T593] kstrdup_const+0x55/0x90 [ 370.983879][ T593] __kernfs_new_node+0x99/0x6e0 [ 370.988717][ T593] ? is_module_text_address+0xe1/0x140 [ 370.994156][ T593] ? kernfs_new_node+0x170/0x170 [ 370.999077][ T593] ? ptr_to_hashval+0x60/0x60 [ 371.003737][ T593] ? arch_stack_walk+0xf8/0x140 [ 371.008576][ T593] ? snprintf+0xd6/0x120 [ 371.012804][ T593] kernfs_new_node+0x97/0x170 [ 371.017467][ T593] __kernfs_create_file+0x4a/0x270 [ 371.022560][ T593] cgroup_addrm_files+0xab8/0xfe0 [ 371.027566][ T593] ? ____kasan_kmalloc+0xdc/0x110 [ 371.032580][ T593] ? __kasan_kmalloc+0x9/0x10 [ 371.037246][ T593] ? kmem_cache_alloc_trace+0x1dd/0x330 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 371.042780][ T593] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 371.048915][ T593] ? delete_node+0x759/0x7b0 [ 371.053491][ T593] ? __kasan_check_read+0x11/0x20 [ 371.058505][ T593] ? delete_node+0x759/0x7b0 [ 371.063175][ T593] ? __kasan_check_write+0x14/0x20 [ 371.068446][ T593] ? idr_replace+0x1c4/0x230 [ 371.073015][ T593] ? idr_get_next+0x4b0/0x4b0 [ 371.077678][ T593] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 371.082687][ T593] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 371.087867][ T593] css_populate_dir+0x137/0x370 [ 371.092703][ T593] cgroup_apply_control_enable+0x8b9/0x12f0 [ 371.098589][ T593] cgroup_apply_control+0x93/0x710 [ 371.103688][ T593] ? css_next_child+0x160/0x160 [ 371.108892][ T593] ? io_schedule+0x120/0x120 [ 371.113505][ T593] ? __kasan_check_write+0x14/0x20 [ 371.118603][ T593] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 371.123877][ T593] cgroup_subtree_control_write+0xd19/0x1310 [ 371.129854][ T593] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 371.135819][ T593] ? __kasan_check_write+0x14/0x20 [ 371.140926][ T593] ? _copy_from_iter+0x3fb/0xd60 [ 371.145866][ T593] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 371.151831][ T593] cgroup_file_write+0x28e/0x590 [ 371.156927][ T593] ? cgroup_seqfile_stop+0xc0/0xc0 [ 371.162018][ T593] ? mutex_lock+0xa6/0x110 [ 371.166446][ T593] ? mutex_trylock+0xb0/0xb0 [ 371.171293][ T593] ? __kasan_check_write+0x14/0x20 [ 371.176387][ T593] kernfs_fop_write_iter+0x2d0/0x410 [ 371.181651][ T593] ? cgroup_seqfile_stop+0xc0/0xc0 [ 371.186741][ T593] vfs_write+0xc1c/0xf40 [ 371.190966][ T593] ? kernel_write+0x3c0/0x3c0 [ 371.195622][ T593] ? mutex_trylock+0xb0/0xb0 [ 371.200190][ T593] ? __fdget_pos+0x26d/0x310 [ 371.204756][ T593] ? ksys_write+0x77/0x2c0 [ 371.209166][ T593] ksys_write+0x198/0x2c0 [ 371.213483][ T593] ? __ia32_sys_read+0x90/0x90 [ 371.218228][ T593] ? debug_smp_processor_id+0x17/0x20 [ 371.223585][ T593] __x64_sys_write+0x7b/0x90 [ 371.228158][ T593] do_syscall_64+0x34/0x70 [ 371.232571][ T593] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 371.238444][ T593] RIP: 0033:0x7f5223098259 [ 371.242857][ T593] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 371.262447][ T593] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 371.270850][ T593] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 371.278824][ T593] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 371.286898][ T593] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 371.294872][ T593] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 371.302831][ T593] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 371.310932][ T593] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 371.319725][ T374] ------------[ cut here ]------------ [ 371.325219][ T374] WARNING: CPU: 0 PID: 374 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 371.334167][ T374] Modules linked in: [ 371.338108][ T374] CPU: 0 PID: 374 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 371.349745][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 371.359834][ T374] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 371.365585][ T374] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 371.385324][ T374] RSP: 0018:ffffc90000b77ba0 EFLAGS: 00010293 [ 371.391414][ T374] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a4f00 [ 371.399862][ T374] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 371.407860][ T374] RBP: ffffc90000b77c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 371.415833][ T374] R10: fffff5200016ef65 R11: 1ffff9200016ef64 R12: dffffc0000000000 [ 371.423828][ T374] R13: ffff88810f1b7880 R14: ffffc90000b77c00 R15: 1ffff9200016ef7c [ 371.432015][ T374] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 371.440959][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 371.447570][ T374] CR2: 000055555703b738 CR3: 0000000106fe2000 CR4: 00000000003506b0 [ 371.455530][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 371.463539][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 371.471599][ T374] Call Trace: [ 371.474872][ T374] ? io_schedule+0x120/0x120 [ 371.479475][ T374] ? vfs_submount+0xb0/0xb0 [ 371.483976][ T374] ? shrink_dentry_list+0x4ec/0x500 [ 371.489201][ T374] ? __kasan_check_write+0x14/0x20 [ 371.494318][ T374] namespace_unlock+0x448/0x4f0 [ 371.499206][ T374] ? umount_tree+0xf50/0xf50 [ 371.503887][ T374] ? __detach_mounts+0x670/0x670 [ 371.508859][ T374] ? selinux_umount+0xf0/0x130 [ 371.513628][ T374] ? security_sb_umount+0x9d/0xb0 [ 371.518772][ T374] path_umount+0xf03/0xfb0 [ 371.523198][ T374] ? namespace_unlock+0x4f0/0x4f0 [ 371.528238][ T374] ? user_path_at_empty+0x40/0x50 [ 371.533247][ T374] __x64_sys_umount+0x122/0x170 [ 371.538097][ T374] ? path_umount+0xfb0/0xfb0 [ 371.542671][ T374] ? debug_smp_processor_id+0x17/0x20 [ 371.548060][ T374] do_syscall_64+0x34/0x70 [ 371.552464][ T374] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 371.558357][ T374] RIP: 0033:0x7f5223099667 [ 371.562763][ T374] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 371.582545][ T374] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 371.590976][ T374] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 371.598957][ T374] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 371.606932][ T374] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 371.614888][ T374] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 371.622971][ T374] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 371.631038][ T374] ---[ end trace 049b4861796392ff ]--- [ 371.636524][ T374] ------------[ cut here ]------------ [ 371.642020][ T374] WARNING: CPU: 0 PID: 374 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 371.651013][ T374] Modules linked in: [ 371.654902][ T374] CPU: 0 PID: 374 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 371.666577][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 371.676672][ T374] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 371.682289][ T374] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 371.702245][ T374] RSP: 0018:ffffc90000b77ca0 EFLAGS: 00010293 [ 371.708327][ T374] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff8881073a4f00 [ 371.716291][ T374] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 371.724266][ T374] RBP: ffffc90000b77d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 371.732244][ T374] R10: fffff5200016ef85 R11: 1ffff9200016ef84 R12: dffffc0000000000 [ 371.740217][ T374] R13: ffff88810f1b7880 R14: ffffc90000b77d00 R15: 1ffff9200016ef9c [ 371.748191][ T374] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 371.757117][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 371.763689][ T374] CR2: 000055555703b738 CR3: 0000000106fe2000 CR4: 00000000003506b0 [ 371.771670][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 371.779647][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 371.787623][ T374] Call Trace: [ 371.790902][ T374] ? lockref_get_or_lock+0x340/0x340 [ 371.796176][ T374] ? umount_tree+0xf50/0xf50 [ 371.800854][ T374] ? vfs_submount+0xb0/0xb0 [ 371.805345][ T374] ? dput+0x2b6/0x320 [ 371.809334][ T374] path_umount+0x1fe/0xfb0 [ 371.813740][ T374] ? namespace_unlock+0x4f0/0x4f0 [ 371.818788][ T374] ? user_path_at_empty+0x40/0x50 [ 371.823805][ T374] __x64_sys_umount+0x122/0x170 [ 371.828652][ T374] ? path_umount+0xfb0/0xfb0 [ 371.833230][ T374] ? debug_smp_processor_id+0x17/0x20 [ 371.838617][ T374] do_syscall_64+0x34/0x70 [ 371.843035][ T374] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 371.848937][ T374] RIP: 0033:0x7f5223099667 [ 371.853339][ T374] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 371.872967][ T374] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 371.881391][ T374] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 371.889374][ T374] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 executing program [ 371.897351][ T374] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 371.905318][ T374] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 371.913483][ T374] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 371.921468][ T374] ---[ end trace 049b486179639300 ]--- [ 371.927252][ T596] FAULT_INJECTION: forcing a failure. [ 371.927252][ T596] name failslab, interval 1, probability 0, space 0, times 0 [ 371.943827][ T596] CPU: 0 PID: 596 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 371.955549][ T596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 371.965589][ T596] Call Trace: [ 371.968870][ T596] dump_stack_lvl+0x1e2/0x24b [ 371.973526][ T596] ? panic+0x7d7/0x7d7 [ 371.977572][ T596] ? bfq_pos_tree_add_move+0x43e/0x43e [ 371.983050][ T596] ? find_next_bit+0xd6/0x120 [ 371.987706][ T596] ? cpumask_next+0x11/0x30 [ 371.992192][ T596] dump_stack+0x15/0x17 [ 371.996327][ T596] should_fail+0x3c0/0x510 [ 372.000727][ T596] ? percpu_ref_init+0xd0/0x330 [ 372.005562][ T596] __should_failslab+0x9f/0xe0 [ 372.010310][ T596] should_failslab+0x9/0x20 [ 372.014791][ T596] kmem_cache_alloc_trace+0x3a/0x330 [ 372.020057][ T596] percpu_ref_init+0xd0/0x330 [ 372.024715][ T596] ? cgroup_setup_root+0xea0/0xea0 [ 372.029805][ T596] cgroup_apply_control_enable+0x3a2/0x12f0 [ 372.035680][ T596] cgroup_apply_control+0x93/0x710 [ 372.040775][ T596] ? css_next_child+0x160/0x160 [ 372.045608][ T596] ? io_schedule+0x120/0x120 [ 372.050185][ T596] ? kernfs_fop_write_iter+0x15e/0x410 [ 372.055628][ T596] ? __kasan_check_write+0x14/0x20 [ 372.060721][ T596] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 372.065995][ T596] cgroup_subtree_control_write+0xd19/0x1310 [ 372.071964][ T596] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 372.077930][ T596] ? __kasan_check_write+0x14/0x20 [ 372.083022][ T596] ? _copy_from_iter+0x3fb/0xd60 [ 372.087938][ T596] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 372.093907][ T596] cgroup_file_write+0x28e/0x590 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 372.098823][ T596] ? cgroup_seqfile_stop+0xc0/0xc0 [ 372.103933][ T596] ? mutex_lock+0xa6/0x110 [ 372.108335][ T596] ? mutex_trylock+0xb0/0xb0 [ 372.112910][ T596] ? __kasan_check_write+0x14/0x20 [ 372.118013][ T596] kernfs_fop_write_iter+0x2d0/0x410 [ 372.123315][ T596] ? cgroup_seqfile_stop+0xc0/0xc0 [ 372.128413][ T596] vfs_write+0xc1c/0xf40 [ 372.132637][ T596] ? kernel_write+0x3c0/0x3c0 [ 372.137302][ T596] ? mutex_trylock+0xb0/0xb0 [ 372.141971][ T596] ? __fdget_pos+0x26d/0x310 [ 372.146544][ T596] ? ksys_write+0x77/0x2c0 [ 372.150959][ T596] ksys_write+0x198/0x2c0 [ 372.155272][ T596] ? __ia32_sys_read+0x90/0x90 [ 372.160022][ T596] ? debug_smp_processor_id+0x17/0x20 [ 372.165395][ T596] __x64_sys_write+0x7b/0x90 [ 372.169966][ T596] do_syscall_64+0x34/0x70 [ 372.174364][ T596] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 372.180252][ T596] RIP: 0033:0x7f5223098259 executing program [ 372.184661][ T596] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 372.204270][ T596] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 372.212682][ T596] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 372.220652][ T596] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 372.228613][ T596] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 372.236571][ T596] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 372.244531][ T596] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 372.260106][ T374] ------------[ cut here ]------------ [ 372.265710][ T374] WARNING: CPU: 1 PID: 374 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 372.274951][ T374] Modules linked in: [ 372.278883][ T374] CPU: 1 PID: 374 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 372.290505][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 372.300571][ T374] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 372.306209][ T374] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 372.325838][ T374] RSP: 0018:ffffc90000b77ca0 EFLAGS: 00010293 [ 372.331914][ T374] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a4f00 [ 372.339886][ T374] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 372.348479][ T374] RBP: ffffc90000b77d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 372.356439][ T374] R10: fffff5200016ef85 R11: 1ffff9200016ef84 R12: dffffc0000000000 [ 372.364412][ T374] R13: ffff88810f1b6a80 R14: ffffc90000b77d00 R15: 1ffff9200016ef9c [ 372.372389][ T374] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 372.381343][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 372.388046][ T374] CR2: 00007ffca92fee28 CR3: 0000000106fe2000 CR4: 00000000003506a0 [ 372.396024][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 372.404026][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 372.412011][ T374] Call Trace: [ 372.415290][ T374] ? lockref_get_or_lock+0x340/0x340 [ 372.420600][ T374] ? umount_tree+0xf50/0xf50 [ 372.425189][ T374] ? vfs_submount+0xb0/0xb0 [ 372.429719][ T374] ? dput+0x2b6/0x320 [ 372.433694][ T374] path_umount+0x1fe/0xfb0 [ 372.438144][ T374] ? namespace_unlock+0x4f0/0x4f0 [ 372.443166][ T374] ? user_path_at_empty+0x40/0x50 [ 372.448220][ T374] __x64_sys_umount+0x122/0x170 [ 372.453076][ T374] ? path_umount+0xfb0/0xfb0 [ 372.457686][ T374] ? debug_smp_processor_id+0x17/0x20 [ 372.463050][ T374] do_syscall_64+0x34/0x70 [ 372.467560][ T374] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 372.473436][ T374] RIP: 0033:0x7f5223099667 [ 372.477850][ T374] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 372.497468][ T374] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 executing program [ 372.505868][ T374] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 372.513861][ T374] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 372.521861][ T374] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 372.529870][ T374] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 372.537868][ T374] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 372.545835][ T374] ---[ end trace 049b486179639301 ]--- [ 372.558208][ T604] FAULT_INJECTION: forcing a failure. [ 372.558208][ T604] name failslab, interval 1, probability 0, space 0, times 0 [ 372.570877][ T604] CPU: 0 PID: 604 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 372.582492][ T604] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 372.592529][ T604] Call Trace: [ 372.595801][ T604] dump_stack_lvl+0x1e2/0x24b [ 372.600456][ T604] ? panic+0x7d7/0x7d7 [ 372.604512][ T604] ? bfq_pos_tree_add_move+0x43e/0x43e [ 372.609957][ T604] ? find_next_bit+0xd6/0x120 [ 372.614619][ T604] ? cpumask_next+0x11/0x30 [ 372.619199][ T604] dump_stack+0x15/0x17 [ 372.623343][ T604] should_fail+0x3c0/0x510 [ 372.627766][ T604] ? percpu_ref_init+0xd0/0x330 [ 372.632597][ T604] __should_failslab+0x9f/0xe0 [ 372.637339][ T604] should_failslab+0x9/0x20 [ 372.641825][ T604] kmem_cache_alloc_trace+0x3a/0x330 [ 372.647093][ T604] percpu_ref_init+0xd0/0x330 [ 372.651754][ T604] ? cgroup_setup_root+0xea0/0xea0 [ 372.656855][ T604] cgroup_apply_control_enable+0x3a2/0x12f0 [ 372.662739][ T604] cgroup_apply_control+0x93/0x710 [ 372.667829][ T604] ? css_next_child+0x160/0x160 [ 372.672664][ T604] ? io_schedule+0x120/0x120 [ 372.677239][ T604] ? kernfs_fop_write_iter+0x15e/0x410 [ 372.682685][ T604] ? __kasan_check_write+0x14/0x20 [ 372.687774][ T604] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 372.693061][ T604] cgroup_subtree_control_write+0xd19/0x1310 [ 372.699022][ T604] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 372.704980][ T604] ? __kasan_check_write+0x14/0x20 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 372.710073][ T604] ? _copy_from_iter+0x3fb/0xd60 [ 372.715251][ T604] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 372.721233][ T604] cgroup_file_write+0x28e/0x590 [ 372.726152][ T604] ? cgroup_seqfile_stop+0xc0/0xc0 [ 372.731247][ T604] ? mutex_lock+0xa6/0x110 [ 372.735660][ T604] ? mutex_trylock+0xb0/0xb0 [ 372.740251][ T604] ? __kasan_check_write+0x14/0x20 [ 372.745346][ T604] kernfs_fop_write_iter+0x2d0/0x410 [ 372.750612][ T604] ? cgroup_seqfile_stop+0xc0/0xc0 [ 372.755706][ T604] vfs_write+0xc1c/0xf40 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 372.760108][ T604] ? kernel_write+0x3c0/0x3c0 [ 372.764873][ T604] ? mutex_trylock+0xb0/0xb0 [ 372.769461][ T604] ? __fdget_pos+0x26d/0x310 [ 372.774031][ T604] ? ksys_write+0x77/0x2c0 [ 372.778423][ T604] ksys_write+0x198/0x2c0 [ 372.782730][ T604] ? __ia32_sys_read+0x90/0x90 [ 372.787470][ T604] ? debug_smp_processor_id+0x17/0x20 [ 372.792820][ T604] __x64_sys_write+0x7b/0x90 [ 372.797398][ T604] do_syscall_64+0x34/0x70 [ 372.801794][ T604] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 372.807662][ T604] RIP: 0033:0x7f5223098259 [ 372.812053][ T604] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 372.831640][ T604] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 372.840038][ T604] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 372.847992][ T604] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 372.855945][ T604] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 372.863899][ T604] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 372.871850][ T604] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 372.897093][ T601] FAULT_INJECTION: forcing a failure. [ 372.897093][ T601] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 372.910538][ T601] CPU: 0 PID: 601 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 372.922149][ T601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 372.932185][ T601] Call Trace: [ 372.935461][ T601] dump_stack_lvl+0x1e2/0x24b [ 372.940136][ T601] ? bfq_pos_tree_add_move+0x43e/0x43e [ 372.945589][ T601] ? stack_trace_save+0x12d/0x1f0 [ 372.950605][ T601] dump_stack+0x15/0x17 [ 372.954743][ T601] should_fail+0x3c0/0x510 [ 372.959137][ T601] should_fail_alloc_page+0x50/0x60 [ 372.964325][ T601] __alloc_pages_nodemask+0x1c0/0x890 [ 372.969690][ T601] ? mutex_trylock+0xb0/0xb0 [ 372.974270][ T601] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 372.979803][ T601] ? mutex_unlock+0x1d/0x40 [ 372.984286][ T601] ? kernfs_xattr_get+0x80/0x90 [ 372.989132][ T601] ? selinux_kernfs_init_security+0x1a8/0x760 [ 372.995184][ T601] allocate_slab+0x78/0x540 [ 372.999752][ T601] ___slab_alloc+0x131/0x2e0 [ 373.004343][ T601] ? __kernfs_new_node+0xdb/0x6e0 [ 373.009359][ T601] __slab_alloc+0x63/0xa0 [ 373.013670][ T601] ? __kernfs_new_node+0xdb/0x6e0 [ 373.018690][ T601] kmem_cache_alloc+0x1ef/0x300 [ 373.023523][ T601] ? __kernfs_new_node+0xdb/0x6e0 [ 373.028550][ T601] __kernfs_new_node+0xdb/0x6e0 [ 373.033388][ T601] ? is_module_text_address+0xe1/0x140 [ 373.038837][ T601] ? kernfs_new_node+0x170/0x170 [ 373.043782][ T601] ? ptr_to_hashval+0x60/0x60 [ 373.048437][ T601] ? snprintf+0xd6/0x120 [ 373.052659][ T601] ? __kasan_check_write+0x14/0x20 [ 373.057749][ T601] ? mutex_unlock+0x1d/0x40 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 373.062233][ T601] kernfs_new_node+0x97/0x170 [ 373.066889][ T601] __kernfs_create_file+0x4a/0x270 [ 373.071978][ T601] cgroup_addrm_files+0xab8/0xfe0 [ 373.076988][ T601] ? ____kasan_kmalloc+0xdc/0x110 [ 373.081989][ T601] ? __kasan_kmalloc+0x9/0x10 [ 373.086648][ T601] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 373.092175][ T601] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 373.098318][ T601] ? delete_node+0x759/0x7b0 [ 373.102891][ T601] ? __kasan_check_read+0x11/0x20 [ 373.107897][ T601] ? idr_replace+0x1c4/0x230 [ 373.112723][ T601] ? idr_get_next+0x4b0/0x4b0 [ 373.117378][ T601] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 373.122380][ T601] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 373.127556][ T601] css_populate_dir+0x137/0x370 [ 373.132406][ T601] cgroup_apply_control_enable+0x8b9/0x12f0 [ 373.138282][ T601] cgroup_apply_control+0x93/0x710 [ 373.143376][ T601] ? css_next_child+0x160/0x160 [ 373.148212][ T601] ? io_schedule+0x120/0x120 [ 373.152792][ T601] ? kernfs_fop_write_iter+0x15e/0x410 [ 373.158249][ T601] ? __kasan_check_write+0x14/0x20 [ 373.163356][ T601] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 373.168622][ T601] cgroup_subtree_control_write+0xd19/0x1310 [ 373.174579][ T601] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 373.180559][ T601] ? __kasan_check_write+0x14/0x20 [ 373.185658][ T601] ? _copy_from_iter+0x3fb/0xd60 [ 373.190581][ T601] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 373.196561][ T601] cgroup_file_write+0x28e/0x590 [ 373.201488][ T601] ? cgroup_seqfile_stop+0xc0/0xc0 [ 373.206583][ T601] ? mutex_lock+0xa6/0x110 [ 373.210985][ T601] ? mutex_trylock+0xb0/0xb0 [ 373.215564][ T601] ? __kasan_check_write+0x14/0x20 [ 373.220765][ T601] kernfs_fop_write_iter+0x2d0/0x410 [ 373.226038][ T601] ? cgroup_seqfile_stop+0xc0/0xc0 [ 373.231133][ T601] vfs_write+0xc1c/0xf40 [ 373.235358][ T601] ? kernel_write+0x3c0/0x3c0 [ 373.240017][ T601] ? mutex_trylock+0xb0/0xb0 [ 373.244583][ T601] ? __fdget_pos+0x26d/0x310 [ 373.249149][ T601] ? ksys_write+0x77/0x2c0 [ 373.253544][ T601] ksys_write+0x198/0x2c0 [ 373.257848][ T601] ? __ia32_sys_read+0x90/0x90 [ 373.262594][ T601] ? debug_smp_processor_id+0x17/0x20 [ 373.267947][ T601] __x64_sys_write+0x7b/0x90 [ 373.272517][ T601] do_syscall_64+0x34/0x70 [ 373.276913][ T601] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 373.282778][ T601] RIP: 0033:0x7f5223098259 [ 373.287169][ T601] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 373.306750][ T601] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 373.315147][ T601] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 373.323110][ T601] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 373.331063][ T601] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 373.339013][ T601] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 373.346975][ T601] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 373.358357][ T373] ------------[ cut here ]------------ [ 373.363828][ T373] WARNING: CPU: 0 PID: 373 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 373.372779][ T373] Modules linked in: [ 373.376713][ T373] CPU: 0 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 373.388339][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 373.398409][ T373] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 373.404031][ T373] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 373.423652][ T373] RSP: 0018:ffffc90000b67ca0 EFLAGS: 00010293 [ 373.429721][ T373] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a62c0 [ 373.437696][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 373.445651][ T373] RBP: ffffc90000b67d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 373.453630][ T373] R10: fffff5200016cf85 R11: 1ffff9200016cf84 R12: dffffc0000000000 [ 373.461619][ T373] R13: ffff88810f1b76c0 R14: ffffc90000b67d00 R15: 1ffff9200016cf9c [ 373.469602][ T373] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 373.478560][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 373.485148][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506b0 [ 373.493128][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 373.501099][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 373.509076][ T373] Call Trace: [ 373.512354][ T373] ? lockref_get_or_lock+0x340/0x340 [ 373.517894][ T373] ? umount_tree+0xf50/0xf50 [ 373.522466][ T373] ? vfs_submount+0xb0/0xb0 [ 373.526970][ T373] ? dput+0x2b6/0x320 [ 373.530934][ T373] path_umount+0x1fe/0xfb0 [ 373.535338][ T373] ? namespace_unlock+0x4f0/0x4f0 [ 373.540364][ T373] ? user_path_at_empty+0x40/0x50 [ 373.545374][ T373] __x64_sys_umount+0x122/0x170 [ 373.550251][ T373] ? path_umount+0xfb0/0xfb0 [ 373.554823][ T373] ? debug_smp_processor_id+0x17/0x20 [ 373.560192][ T373] do_syscall_64+0x34/0x70 [ 373.564594][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 373.570494][ T373] RIP: 0033:0x7f5223099667 [ 373.574894][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 373.594585][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 373.603025][ T373] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 373.611043][ T373] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 373.619117][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 373.627121][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 373.635083][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 373.643327][ T373] ---[ end trace 049b486179639302 ]--- [ 373.649502][ T377] ------------[ cut here ]------------ [ 373.654978][ T377] WARNING: CPU: 0 PID: 377 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 373.655585][ T373] ------------[ cut here ]------------ [ 373.664026][ T377] Modules linked in: [ 373.669771][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1109 cleanup_mnt+0x4c5/0x510 [ 373.673375][ T377] CPU: 0 PID: 377 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 373.673382][ T377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 373.673399][ T377] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 373.673418][ T377] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 373.682349][ T373] Modules linked in: [ 373.693669][ T377] RSP: 0018:ffffc90000bd7ba0 EFLAGS: 00010293 [ 373.693689][ T377] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff888107792780 [ 373.693697][ T377] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 373.693704][ T377] RBP: ffffc90000bd7c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 373.693711][ T377] R10: fffff5200017af65 R11: 1ffff9200017af64 R12: dffffc0000000000 [ 373.693718][ T377] R13: ffff88810f1b6000 R14: ffffc90000bd7c00 R15: 1ffff9200017af7c [ 373.693728][ T377] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 373.693735][ T377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 373.693743][ T377] CR2: 000055555703b738 CR3: 000000011cfdb000 CR4: 00000000003506b0 [ 373.693752][ T377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 373.693767][ T377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 373.704476][ T373] [ 373.709463][ T377] Call Trace: [ 373.709480][ T377] ? io_schedule+0x120/0x120 [ 373.709491][ T377] ? vfs_submount+0xb0/0xb0 [ 373.709503][ T377] ? shrink_dentry_list+0x4ec/0x500 [ 373.709513][ T377] ? __kasan_check_write+0x14/0x20 [ 373.709522][ T377] namespace_unlock+0x448/0x4f0 [ 373.709538][ T377] ? umount_tree+0xf50/0xf50 [ 373.729580][ T373] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 373.733023][ T377] ? __detach_mounts+0x670/0x670 [ 373.733038][ T377] ? selinux_umount+0xf0/0x130 [ 373.739300][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 373.747105][ T377] ? security_sb_umount+0x9d/0xb0 [ 373.755267][ T373] RIP: 0010:cleanup_mnt+0x4c5/0x510 [ 373.763030][ T377] path_umount+0xf03/0xfb0 [ 373.763046][ T377] ? namespace_unlock+0x4f0/0x4f0 [ 373.771257][ T373] Code: 0f a1 ff 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7e 0e b5 ff 48 8b 7d d0 e8 c5 07 05 00 e9 21 fd ff ff e8 6b 0e b5 ff <0f> 0b e9 e5 fc ff ff 48 c7 c1 98 c6 9e 86 80 e1 07 80 c1 03 38 c1 [ 373.778996][ T377] ? user_path_at_empty+0x40/0x50 [ 373.779013][ T377] __x64_sys_umount+0x122/0x170 [ 373.788300][ T373] RSP: 0018:ffffc90000b67e30 EFLAGS: 00010293 [ 373.794509][ T377] ? path_umount+0xfb0/0xfb0 [ 373.794530][ T377] ? debug_smp_processor_id+0x17/0x20 [ 373.802919][ T373] [ 373.810724][ T377] do_syscall_64+0x34/0x70 [ 373.810735][ T377] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 373.810752][ T377] RIP: 0033:0x7f5223099667 [ 373.819000][ T373] RAX: ffffffff81b7a695 RBX: ffffe8ffffd2206c RCX: ffff8881073a62c0 [ 373.821056][ T377] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 373.821063][ T377] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 373.824364][ T373] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 373.828941][ T377] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 373.833798][ T373] RBP: ffffc90000b67e80 R08: ffffffff81b7a373 R09: 0000000000000003 [ 373.838705][ T377] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 373.838712][ T377] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 373.838718][ T377] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 373.838731][ T377] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 373.844109][ T373] R10: fffff5200016cfc5 R11: 1ffff9200016cfc4 R12: ffff88810f1b7728 [ 373.848690][ T377] ---[ end trace 049b486179639303 ]--- [ 373.853494][ T373] R13: 0000000000000008 R14: dffffc0000000000 R15: 00000000fffffffe [ 373.865072][ T377] ------------[ cut here ]------------ [ 374.086259][ T377] WARNING: CPU: 0 PID: 377 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 374.095191][ T377] Modules linked in: [ 374.099084][ T377] CPU: 0 PID: 377 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 374.110980][ T377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 374.121054][ T377] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 374.126674][ T377] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 374.146295][ T377] RSP: 0018:ffffc90000bd7ca0 EFLAGS: 00010293 [ 374.152478][ T377] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff888107792780 [ 374.160451][ T377] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 374.168414][ T377] RBP: ffffc90000bd7d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 374.176366][ T377] R10: fffff5200017af85 R11: 1ffff9200017af84 R12: dffffc0000000000 [ 374.184342][ T377] R13: ffff88810f1b6000 R14: ffffc90000bd7d00 R15: 1ffff9200017af9c [ 374.192309][ T377] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 374.201240][ T377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 374.207815][ T377] CR2: 000055555703b738 CR3: 000000011cfdb000 CR4: 00000000003506b0 [ 374.215798][ T377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 374.223796][ T377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 374.231764][ T377] Call Trace: [ 374.235038][ T377] ? lockref_get_or_lock+0x340/0x340 [ 374.240313][ T377] ? umount_tree+0xf50/0xf50 [ 374.244882][ T377] ? vfs_submount+0xb0/0xb0 [ 374.249382][ T377] ? dput+0x2b6/0x320 [ 374.253347][ T377] path_umount+0x1fe/0xfb0 [ 374.257764][ T377] ? namespace_unlock+0x4f0/0x4f0 [ 374.262774][ T377] ? user_path_at_empty+0x40/0x50 [ 374.267795][ T377] __x64_sys_umount+0x122/0x170 [ 374.272623][ T377] ? path_umount+0xfb0/0xfb0 [ 374.277217][ T377] ? debug_smp_processor_id+0x17/0x20 [ 374.282570][ T377] do_syscall_64+0x34/0x70 [ 374.286978][ T377] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 374.292863][ T377] RIP: 0033:0x7f5223099667 [ 374.297271][ T377] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 374.316885][ T377] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 374.325283][ T377] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 374.333274][ T377] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 374.341236][ T377] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 374.349227][ T377] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 374.358843][ T377] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 374.366819][ T377] ---[ end trace 049b486179639304 ]--- [ 374.372505][ T375] ------------[ cut here ]------------ [ 374.378003][ T375] WARNING: CPU: 1 PID: 375 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 374.386961][ T375] Modules linked in: [ 374.390860][ T375] CPU: 1 PID: 375 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 374.402505][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 374.412628][ T375] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 374.416634][ T373] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 374.418281][ T375] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 374.435237][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 374.448463][ T375] RSP: 0018:ffffc90000b87ba0 EFLAGS: 00010293 [ 374.448476][ T375] RAX: ffffffff81b68cba RBX: 00000000fffffffd RCX: ffff888106bca780 [ 374.448482][ T375] RDX: 0000000000000000 RSI: 00000000fffffffd RDI: 0000000000000000 [ 374.448496][ T375] RBP: ffffc90000b87c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 374.468776][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506b0 [ 374.469088][ T375] R10: fffff52000170f51 R11: 1ffff92000170f50 R12: dffffc0000000000 [ 374.485695][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 374.493063][ T375] R13: ffff88810da40a80 R14: ffffc90000b87c00 R15: 1ffff92000170f7c [ 374.493079][ T375] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 374.517271][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 374.525876][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 374.525884][ T375] CR2: 00007ffca92fe8ac CR3: 0000000106987000 CR4: 00000000003506a0 [ 374.525898][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 374.556398][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 374.564396][ T375] Call Trace: [ 374.567699][ T375] ? io_schedule+0x120/0x120 [ 374.572278][ T375] ? vfs_submount+0xb0/0xb0 [ 374.573477][ T373] Call Trace: [ 374.576791][ T375] ? shrink_dentry_list+0x4ec/0x500 [ 374.576801][ T375] ? __kasan_check_write+0x14/0x20 [ 374.576811][ T375] namespace_unlock+0x448/0x4f0 [ 374.576826][ T375] ? umount_tree+0xf50/0xf50 [ 374.587810][ T373] __cleanup_mnt+0x19/0x20 [ 374.590383][ T375] ? __detach_mounts+0x670/0x670 [ 374.600608][ T373] task_work_run+0x147/0x1b0 [ 374.604192][ T375] ? selinux_umount+0xf0/0x130 [ 374.604201][ T375] ? security_sb_umount+0x9d/0xb0 [ 374.604218][ T375] path_umount+0xf03/0xfb0 [ 374.626404][ T373] exit_to_user_mode_loop+0xc8/0xe0 [ 374.627893][ T375] ? namespace_unlock+0x4f0/0x4f0 [ 374.637739][ T373] syscall_exit_to_user_mode+0x77/0xa0 [ 374.638128][ T375] ? user_path_at_empty+0x40/0x50 [ 374.648556][ T375] __x64_sys_umount+0x122/0x170 [ 374.653394][ T375] ? path_umount+0xfb0/0xfb0 [ 374.654286][ T373] do_syscall_64+0x40/0x70 [ 374.658009][ T375] ? debug_smp_processor_id+0x17/0x20 [ 374.667775][ T375] do_syscall_64+0x34/0x70 [ 374.668854][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 374.672175][ T375] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 374.672190][ T375] RIP: 0033:0x7f5223099667 [ 374.688390][ T375] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 374.697472][ T373] RIP: 0033:0x7f5223099667 [ 374.708000][ T375] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 executing program [ 374.708013][ T375] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 374.708019][ T375] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 374.708026][ T375] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 374.708041][ T375] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 374.734013][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 374.736885][ T375] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 374.736893][ T375] ---[ end trace 049b486179639305 ]--- [ 374.737349][ T616] FAULT_INJECTION: forcing a failure. [ 374.737349][ T616] name failslab, interval 1, probability 0, space 0, times 0 [ 374.748858][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 [ 374.756277][ T616] CPU: 1 PID: 616 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 374.774855][ T373] ORIG_RAX: 00000000000000a6 [ 374.780431][ T616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 374.780436][ T616] Call Trace: [ 374.780453][ T616] dump_stack_lvl+0x1e2/0x24b [ 374.780463][ T616] ? bfq_pos_tree_add_move+0x43e/0x43e [ 374.780473][ T616] ? selinux_kernfs_init_security+0x1a8/0x760 [ 374.780481][ T616] dump_stack+0x15/0x17 [ 374.780490][ T616] should_fail+0x3c0/0x510 [ 374.780509][ T616] ? __kernfs_new_node+0x99/0x6e0 [ 374.786395][ T373] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5223099667 [ 374.798509][ T616] __should_failslab+0x9f/0xe0 [ 374.798520][ T616] should_failslab+0x9/0x20 [ 374.798531][ T616] __kmalloc_track_caller+0x5f/0x350 [ 374.798541][ T616] kstrdup_const+0x55/0x90 [ 374.798565][ T616] __kernfs_new_node+0x99/0x6e0 [ 374.804889][ T373] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 374.816299][ T616] ? is_module_text_address+0xe1/0x140 [ 374.816309][ T616] ? kernfs_new_node+0x170/0x170 [ 374.816319][ T616] ? ptr_to_hashval+0x60/0x60 [ 374.816327][ T616] ? arch_stack_walk+0xf8/0x140 [ 374.816343][ T616] ? snprintf+0xd6/0x120 [ 374.821830][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 374.831148][ T616] kernfs_new_node+0x97/0x170 [ 374.831159][ T616] __kernfs_create_file+0x4a/0x270 [ 374.831168][ T616] cgroup_addrm_files+0xab8/0xfe0 [ 374.831178][ T616] ? ____kasan_kmalloc+0xdc/0x110 [ 374.831186][ T616] ? __kasan_kmalloc+0x9/0x10 [ 374.831207][ T616] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 374.834949][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 374.839196][ T616] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 374.839207][ T616] ? delete_node+0x759/0x7b0 [ 374.839218][ T616] ? __kasan_check_read+0x11/0x20 [ 374.839225][ T616] ? delete_node+0x759/0x7b0 [ 374.839240][ T616] ? __kasan_check_write+0x14/0x20 [ 374.844994][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 374.850723][ T616] ? idr_replace+0x1c4/0x230 [ 374.850733][ T616] ? idr_get_next+0x4b0/0x4b0 [ 374.850741][ T616] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 374.850749][ T616] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 374.850767][ T616] css_populate_dir+0x137/0x370 [ 374.855212][ T373] ---[ end trace 049b486179639306 ]--- [ 374.859294][ T616] cgroup_apply_control_enable+0x8b9/0x12f0 [ 374.859306][ T616] cgroup_apply_control+0x93/0x710 [ 374.859315][ T616] ? css_next_child+0x160/0x160 [ 374.859334][ T616] ? release_task_stack+0x4c2/0x660 [ 374.867895][ T375] ------------[ cut here ]------------ [ 374.872291][ T616] ? io_schedule+0x120/0x120 [ 374.872313][ T616] ? kernfs_fop_write_iter+0x15e/0x410 [ 374.877104][ T375] WARNING: CPU: 0 PID: 375 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 374.881557][ T616] ? __kasan_check_write+0x14/0x20 [ 374.886823][ T375] Modules linked in: [ 374.891214][ T616] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 374.896031][ T375] [ 374.903988][ T616] cgroup_subtree_control_write+0xd19/0x1310 [ 374.904006][ T616] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 374.909463][ T375] CPU: 0 PID: 375 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 executing program [ 374.914381][ T616] ? __kasan_check_write+0x14/0x20 [ 374.919053][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 374.923862][ T616] ? _copy_from_iter+0x3fb/0xd60 [ 374.928093][ T375] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 374.936034][ T616] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 374.940697][ T375] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 374.945776][ T616] cgroup_file_write+0x28e/0x590 [ 374.950791][ T375] RSP: 0018:ffffc90000b87ca0 EFLAGS: 00010293 [ 374.955781][ T616] ? cgroup_seqfile_stop+0xc0/0xc0 [ 374.960460][ T375] [ 374.966249][ T616] ? mutex_lock+0xa6/0x110 [ 374.974214][ T375] RAX: ffffffff81b68cba RBX: 00000000fffffffc RCX: ffff888106bca780 [ 374.980327][ T616] ? mutex_trylock+0xb0/0xb0 [ 374.980346][ T616] ? __kasan_check_write+0x14/0x20 [ 374.984911][ T375] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: 0000000000000000 [ 374.989933][ T616] kernfs_fop_write_iter+0x2d0/0x410 [ 374.989945][ T616] ? cgroup_seqfile_stop+0xc0/0xc0 [ 374.989961][ T616] vfs_write+0xc1c/0xf40 [ 374.994526][ T375] RBP: ffffc90000b87d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 374.999612][ T616] ? kernel_write+0x3c0/0x3c0 [ 374.999623][ T616] ? mutex_trylock+0xb0/0xb0 [ 374.999640][ T616] ? __fdget_pos+0x26d/0x310 [ 375.007601][ T375] R10: fffff52000170f85 R11: 1ffff92000170f84 R12: dffffc0000000000 [ 375.012163][ T616] ? ksys_write+0x77/0x2c0 [ 375.016825][ T375] R13: ffff88810da40a80 R14: ffffc90000b87d00 R15: 1ffff92000170f9c [ 375.021813][ T616] ksys_write+0x198/0x2c0 [ 375.026994][ T375] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 375.031814][ T616] ? __ia32_sys_read+0x90/0x90 [ 375.037265][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 375.043135][ T616] ? debug_smp_processor_id+0x17/0x20 [ 375.048235][ T375] CR2: 00007f522303bcc0 CR3: 0000000106987000 CR4: 00000000003506b0 [ 375.053054][ T616] __x64_sys_write+0x7b/0x90 [ 375.058234][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 375.063661][ T616] do_syscall_64+0x34/0x70 [ 375.068231][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 375.073660][ T616] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 375.082569][ T375] Call Trace: [ 375.087642][ T616] RIP: 0033:0x7f5223098259 [ 375.087654][ T616] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 375.087667][ T616] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 [ 375.091541][ T375] ? lockref_get_or_lock+0x340/0x340 [ 375.096784][ T616] ORIG_RAX: 0000000000000001 [ 375.096792][ T616] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 375.096798][ T616] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 375.096812][ T616] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 375.099125][ T375] ? umount_tree+0xf50/0xf50 [ 375.105081][ T616] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 375.111065][ T375] ? vfs_submount+0xb0/0xb0 [ 375.122647][ T616] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 375.440175][ T375] ? dput+0x2b6/0x320 [ 375.444141][ T375] path_umount+0x1fe/0xfb0 [ 375.448573][ T375] ? namespace_unlock+0x4f0/0x4f0 [ 375.453595][ T375] ? user_path_at_empty+0x40/0x50 [ 375.458667][ T375] __x64_sys_umount+0x122/0x170 [ 375.463514][ T375] ? path_umount+0xfb0/0xfb0 [ 375.468137][ T375] ? debug_smp_processor_id+0x17/0x20 [ 375.473511][ T375] do_syscall_64+0x34/0x70 [ 375.477948][ T375] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 375.483829][ T375] RIP: 0033:0x7f5223099667 [ 375.488268][ T375] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 375.507883][ T375] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 375.516295][ T375] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 executing program write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program [ 375.524287][ T375] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 375.532273][ T375] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 375.540255][ T375] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 375.548513][ T375] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 375.556560][ T375] ---[ end trace 049b486179639307 ]--- [ 375.562316][ T616] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 375.577812][ T373] ------------[ cut here ]------------ [ 375.583420][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 375.592369][ T373] Modules linked in: [ 375.596262][ T373] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 375.607893][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 375.617963][ T373] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 375.623588][ T373] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 375.643205][ T373] RSP: 0018:ffffc90000b67ca0 EFLAGS: 00010293 [ 375.649297][ T373] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a62c0 [ 375.657317][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 375.665288][ T373] RBP: ffffc90000b67d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 375.673317][ T373] R10: fffff5200016cf85 R11: 1ffff9200016cf84 R12: dffffc0000000000 [ 375.681301][ T373] R13: ffff88810f1b6fc0 R14: ffffc90000b67d00 R15: 1ffff9200016cf9c [ 375.689292][ T373] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 375.698327][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 375.704907][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506a0 [ 375.712901][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 375.720924][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 375.728902][ T373] Call Trace: [ 375.732190][ T373] ? lockref_get_or_lock+0x340/0x340 [ 375.737490][ T373] ? umount_tree+0xf50/0xf50 [ 375.742070][ T373] ? vfs_submount+0xb0/0xb0 [ 375.746560][ T373] ? dput+0x2b6/0x320 [ 375.750582][ T373] path_umount+0x1fe/0xfb0 [ 375.754999][ T373] ? namespace_unlock+0x4f0/0x4f0 [ 375.760072][ T373] ? user_path_at_empty+0x40/0x50 [ 375.765091][ T373] __x64_sys_umount+0x122/0x170 [ 375.769972][ T373] ? path_umount+0xfb0/0xfb0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 375.774577][ T373] ? debug_smp_processor_id+0x17/0x20 [ 375.779972][ T373] do_syscall_64+0x34/0x70 [ 375.784398][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 375.790360][ T373] RIP: 0033:0x7f5223099667 [ 375.794784][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 375.814424][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program executing program [ 375.822872][ T373] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 375.830880][ T373] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 375.838963][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 375.846977][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 375.854943][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 375.862945][ T373] ---[ end trace 049b486179639308 ]--- executing program executing program [ 375.878812][ T634] FAULT_INJECTION: forcing a failure. [ 375.878812][ T634] name failslab, interval 1, probability 0, space 0, times 0 [ 375.891549][ T634] CPU: 1 PID: 634 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 375.903171][ T634] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 375.913307][ T634] Call Trace: [ 375.916595][ T634] dump_stack_lvl+0x1e2/0x24b [ 375.921274][ T634] ? bfq_pos_tree_add_move+0x43e/0x43e [ 375.926788][ T634] ? selinux_kernfs_init_security+0x1a8/0x760 [ 375.932834][ T634] dump_stack+0x15/0x17 [ 375.936974][ T634] should_fail+0x3c0/0x510 [ 375.941373][ T634] ? __kernfs_new_node+0x99/0x6e0 [ 375.946499][ T634] __should_failslab+0x9f/0xe0 [ 375.951270][ T634] should_failslab+0x9/0x20 [ 375.956113][ T634] __kmalloc_track_caller+0x5f/0x350 [ 375.961387][ T634] kstrdup_const+0x55/0x90 [ 375.965807][ T634] __kernfs_new_node+0x99/0x6e0 [ 375.970647][ T634] ? is_module_text_address+0xe1/0x140 [ 375.976088][ T634] ? kernfs_new_node+0x170/0x170 [ 375.981005][ T634] ? ptr_to_hashval+0x60/0x60 [ 375.986366][ T634] ? arch_stack_walk+0xf8/0x140 [ 375.991231][ T634] ? snprintf+0xd6/0x120 [ 375.995459][ T634] kernfs_new_node+0x97/0x170 [ 376.000116][ T634] __kernfs_create_file+0x4a/0x270 [ 376.005217][ T634] cgroup_addrm_files+0xab8/0xfe0 [ 376.010222][ T634] ? ____kasan_kmalloc+0xdc/0x110 [ 376.015231][ T634] ? __kasan_kmalloc+0x9/0x10 [ 376.019885][ T634] ? kmem_cache_alloc_trace+0x1dd/0x330 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 376.025408][ T634] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 376.031548][ T634] ? delete_node+0x759/0x7b0 [ 376.036134][ T634] ? __kasan_check_read+0x11/0x20 [ 376.041140][ T634] ? delete_node+0x759/0x7b0 [ 376.045720][ T634] ? __kasan_check_write+0x14/0x20 [ 376.050815][ T634] ? idr_replace+0x1c4/0x230 [ 376.055385][ T634] ? idr_get_next+0x4b0/0x4b0 [ 376.060046][ T634] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 376.065061][ T634] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 376.070246][ T634] css_populate_dir+0x137/0x370 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 376.075089][ T634] cgroup_apply_control_enable+0x8b9/0x12f0 [ 376.080970][ T634] cgroup_apply_control+0x93/0x710 [ 376.086068][ T634] ? css_next_child+0x160/0x160 [ 376.090896][ T634] ? stack_trace_save+0x12d/0x1f0 [ 376.095897][ T634] ? io_schedule+0x120/0x120 [ 376.100484][ T634] ? kernfs_fop_write_iter+0x15e/0x410 [ 376.105946][ T634] ? __kasan_check_write+0x14/0x20 [ 376.111049][ T634] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 376.116318][ T634] cgroup_subtree_control_write+0xd19/0x1310 [ 376.122278][ T634] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 376.128241][ T634] ? __kasan_check_write+0x14/0x20 [ 376.133348][ T634] ? _copy_from_iter+0x3fb/0xd60 [ 376.138268][ T634] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 376.144312][ T634] cgroup_file_write+0x28e/0x590 [ 376.149235][ T634] ? cgroup_seqfile_stop+0xc0/0xc0 [ 376.154333][ T634] ? mutex_lock+0xa6/0x110 [ 376.158730][ T634] ? mutex_trylock+0xb0/0xb0 [ 376.163305][ T634] ? __kasan_check_write+0x14/0x20 [ 376.168400][ T634] kernfs_fop_write_iter+0x2d0/0x410 [ 376.173681][ T634] ? cgroup_seqfile_stop+0xc0/0xc0 [ 376.178859][ T634] vfs_write+0xc1c/0xf40 [ 376.183082][ T634] ? slab_free_freelist_hook+0xcc/0x1a0 [ 376.188628][ T634] ? kernel_write+0x3c0/0x3c0 [ 376.193296][ T634] ? mutex_trylock+0xb0/0xb0 [ 376.197867][ T634] ? __fdget_pos+0x26d/0x310 [ 376.202435][ T634] ? ksys_write+0x77/0x2c0 [ 376.206827][ T634] ksys_write+0x198/0x2c0 [ 376.211146][ T634] ? __ia32_sys_read+0x90/0x90 [ 376.215888][ T634] ? debug_smp_processor_id+0x17/0x20 [ 376.221236][ T634] __x64_sys_write+0x7b/0x90 [ 376.225812][ T634] do_syscall_64+0x34/0x70 [ 376.230217][ T634] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 376.236086][ T634] RIP: 0033:0x7f5223098259 [ 376.240480][ T634] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 376.260241][ T634] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 376.268719][ T634] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program executing program executing program [ 376.276669][ T634] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 376.284635][ T634] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 376.292586][ T634] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 376.300534][ T634] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 376.309289][ T634] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 376.347162][ T613] FAULT_INJECTION: forcing a failure. [ 376.347162][ T613] name failslab, interval 1, probability 0, space 0, times 0 [ 376.359836][ T613] CPU: 1 PID: 613 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 376.371451][ T613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 376.381500][ T613] Call Trace: [ 376.384782][ T613] dump_stack_lvl+0x1e2/0x24b [ 376.389447][ T613] ? panic+0x7d7/0x7d7 [ 376.393502][ T613] ? bfq_pos_tree_add_move+0x43e/0x43e [ 376.398938][ T613] ? find_next_bit+0xd6/0x120 [ 376.403602][ T613] ? cpumask_next+0x11/0x30 [ 376.408095][ T613] dump_stack+0x15/0x17 [ 376.412226][ T613] should_fail+0x3c0/0x510 [ 376.416627][ T613] ? percpu_ref_init+0xd0/0x330 [ 376.421477][ T613] __should_failslab+0x9f/0xe0 [ 376.426223][ T613] should_failslab+0x9/0x20 [ 376.430704][ T613] kmem_cache_alloc_trace+0x3a/0x330 [ 376.435974][ T613] percpu_ref_init+0xd0/0x330 [ 376.440633][ T613] ? cgroup_setup_root+0xea0/0xea0 [ 376.445747][ T613] cgroup_apply_control_enable+0x3a2/0x12f0 [ 376.451621][ T613] cgroup_apply_control+0x93/0x710 [ 376.456713][ T613] ? css_next_child+0x160/0x160 [ 376.461558][ T613] ? release_task_stack+0x529/0x660 [ 376.466739][ T613] ? io_schedule+0x120/0x120 [ 376.471307][ T613] ? kernfs_fop_write_iter+0x15e/0x410 [ 376.476739][ T613] ? __kasan_check_write+0x14/0x20 [ 376.481826][ T613] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 376.487096][ T613] cgroup_subtree_control_write+0xd19/0x1310 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 376.493057][ T613] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 376.499018][ T613] ? __kasan_check_write+0x14/0x20 [ 376.504111][ T613] ? _copy_from_iter+0x3fb/0xd60 [ 376.509042][ T613] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 376.515002][ T613] cgroup_file_write+0x28e/0x590 [ 376.519925][ T613] ? cgroup_seqfile_stop+0xc0/0xc0 [ 376.525013][ T613] ? mutex_lock+0xa6/0x110 [ 376.529404][ T613] ? mutex_trylock+0xb0/0xb0 [ 376.533978][ T613] ? __kasan_check_write+0x14/0x20 [ 376.539065][ T613] kernfs_fop_write_iter+0x2d0/0x410 [ 376.544327][ T613] ? cgroup_seqfile_stop+0xc0/0xc0 [ 376.549419][ T613] vfs_write+0xc1c/0xf40 [ 376.553646][ T613] ? kernel_write+0x3c0/0x3c0 [ 376.558303][ T613] ? mutex_trylock+0xb0/0xb0 [ 376.562873][ T613] ? __fdget_pos+0x26d/0x310 [ 376.567438][ T613] ? ksys_write+0x77/0x2c0 [ 376.571831][ T613] ksys_write+0x198/0x2c0 [ 376.576141][ T613] ? __ia32_sys_read+0x90/0x90 [ 376.580885][ T613] ? debug_smp_processor_id+0x17/0x20 [ 376.586239][ T613] __x64_sys_write+0x7b/0x90 [ 376.590809][ T613] do_syscall_64+0x34/0x70 [ 376.595203][ T613] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 376.601069][ T613] RIP: 0033:0x7f5223098259 [ 376.605465][ T613] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 376.625054][ T613] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 376.633460][ T613] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 executing program [ 376.641412][ T613] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 376.649363][ T613] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 376.657316][ T613] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 376.665268][ T613] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 376.687122][ T612] FAULT_INJECTION: forcing a failure. [ 376.687122][ T612] name failslab, interval 1, probability 0, space 0, times 0 [ 376.700133][ T612] CPU: 0 PID: 612 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 376.711769][ T612] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 376.721805][ T612] Call Trace: [ 376.725076][ T612] dump_stack_lvl+0x1e2/0x24b [ 376.729735][ T612] ? bfq_pos_tree_add_move+0x43e/0x43e [ 376.735179][ T612] dump_stack+0x15/0x17 [ 376.739314][ T612] should_fail+0x3c0/0x510 [ 376.743709][ T612] ? pids_css_alloc+0x4e/0x120 [ 376.748611][ T612] __should_failslab+0x9f/0xe0 [ 376.753366][ T612] should_failslab+0x9/0x20 [ 376.757852][ T612] kmem_cache_alloc_trace+0x3a/0x330 [ 376.763117][ T612] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 376.768296][ T612] pids_css_alloc+0x4e/0x120 [ 376.772884][ T612] cgroup_apply_control_enable+0x350/0x12f0 [ 376.778754][ T612] cgroup_apply_control+0x93/0x710 [ 376.783842][ T612] ? css_next_child+0x160/0x160 [ 376.788678][ T612] ? io_schedule+0x120/0x120 [ 376.793254][ T612] ? kernfs_fop_write_iter+0x15e/0x410 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 376.798694][ T612] ? __kasan_check_write+0x14/0x20 [ 376.803792][ T612] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 376.809058][ T612] cgroup_subtree_control_write+0xd19/0x1310 [ 376.815024][ T612] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 376.820989][ T612] ? __kasan_check_write+0x14/0x20 [ 376.826081][ T612] ? _copy_from_iter+0x3fb/0xd60 [ 376.830997][ T612] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 376.836965][ T612] cgroup_file_write+0x28e/0x590 [ 376.841884][ T612] ? cgroup_seqfile_stop+0xc0/0xc0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 376.846971][ T612] ? mutex_lock+0xa6/0x110 [ 376.851363][ T612] ? mutex_trylock+0xb0/0xb0 [ 376.855948][ T612] ? __kasan_check_write+0x14/0x20 [ 376.861037][ T612] kernfs_fop_write_iter+0x2d0/0x410 [ 376.866300][ T612] ? cgroup_seqfile_stop+0xc0/0xc0 [ 376.871405][ T612] vfs_write+0xc1c/0xf40 [ 376.875631][ T612] ? kernel_write+0x3c0/0x3c0 [ 376.880285][ T612] ? mutex_trylock+0xb0/0xb0 [ 376.884853][ T612] ? __fdget_pos+0x26d/0x310 [ 376.889439][ T612] ? ksys_write+0x77/0x2c0 [ 376.893856][ T612] ksys_write+0x198/0x2c0 [ 376.898185][ T612] ? __ia32_sys_read+0x90/0x90 [ 376.902930][ T612] ? debug_smp_processor_id+0x17/0x20 [ 376.908287][ T612] __x64_sys_write+0x7b/0x90 [ 376.912856][ T612] do_syscall_64+0x34/0x70 [ 376.917256][ T612] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 376.923123][ T612] RIP: 0033:0x7f5223098259 [ 376.927518][ T612] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 376.947122][ T612] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 376.955520][ T612] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 376.963492][ T612] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 376.971556][ T612] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 376.979514][ T612] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 376.987469][ T612] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 377.037255][ T646] FAULT_INJECTION: forcing a failure. [ 377.037255][ T646] name failslab, interval 1, probability 0, space 0, times 0 [ 377.049946][ T646] CPU: 0 PID: 646 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 377.061568][ T646] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 377.071605][ T646] Call Trace: [ 377.074879][ T646] dump_stack_lvl+0x1e2/0x24b [ 377.079533][ T646] ? panic+0x7d7/0x7d7 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 377.083600][ T646] ? bfq_pos_tree_add_move+0x43e/0x43e [ 377.089046][ T646] ? find_next_bit+0xd6/0x120 [ 377.093731][ T646] ? cpumask_next+0x11/0x30 [ 377.098219][ T646] dump_stack+0x15/0x17 [ 377.102366][ T646] should_fail+0x3c0/0x510 [ 377.106772][ T646] ? percpu_ref_init+0xd0/0x330 [ 377.111606][ T646] __should_failslab+0x9f/0xe0 [ 377.116384][ T646] should_failslab+0x9/0x20 [ 377.120867][ T646] kmem_cache_alloc_trace+0x3a/0x330 [ 377.126130][ T646] percpu_ref_init+0xd0/0x330 [ 377.130786][ T646] ? cgroup_setup_root+0xea0/0xea0 [ 377.135877][ T646] cgroup_apply_control_enable+0x3a2/0x12f0 [ 377.141748][ T646] cgroup_apply_control+0x93/0x710 [ 377.146837][ T646] ? css_next_child+0x160/0x160 [ 377.151670][ T646] ? stack_trace_save+0x12d/0x1f0 [ 377.156683][ T646] ? io_schedule+0x120/0x120 [ 377.161257][ T646] ? kernfs_fop_write_iter+0x15e/0x410 [ 377.166693][ T646] ? __kasan_check_write+0x14/0x20 [ 377.171789][ T646] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 377.177057][ T646] cgroup_subtree_control_write+0xd19/0x1310 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 377.183017][ T646] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 377.188976][ T646] ? __kasan_check_write+0x14/0x20 [ 377.194068][ T646] ? _copy_from_iter+0x3fb/0xd60 [ 377.198985][ T646] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 377.204938][ T646] cgroup_file_write+0x28e/0x590 [ 377.209856][ T646] ? cgroup_seqfile_stop+0xc0/0xc0 [ 377.214972][ T646] ? mutex_lock+0xa6/0x110 [ 377.219373][ T646] ? mutex_trylock+0xb0/0xb0 [ 377.223942][ T646] ? __kasan_check_write+0x14/0x20 [ 377.229029][ T646] kernfs_fop_write_iter+0x2d0/0x410 [ 377.234290][ T646] ? cgroup_seqfile_stop+0xc0/0xc0 [ 377.239380][ T646] vfs_write+0xc1c/0xf40 [ 377.243601][ T646] ? slab_free_freelist_hook+0xcc/0x1a0 [ 377.249126][ T646] ? kernel_write+0x3c0/0x3c0 [ 377.253789][ T646] ? mutex_trylock+0xb0/0xb0 [ 377.258361][ T646] ? __fdget_pos+0x26d/0x310 [ 377.262928][ T646] ? ksys_write+0x77/0x2c0 [ 377.267322][ T646] ksys_write+0x198/0x2c0 [ 377.271644][ T646] ? __ia32_sys_read+0x90/0x90 [ 377.276387][ T646] ? debug_smp_processor_id+0x17/0x20 [ 377.281740][ T646] __x64_sys_write+0x7b/0x90 [ 377.286317][ T646] do_syscall_64+0x34/0x70 [ 377.290713][ T646] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 377.296585][ T646] RIP: 0033:0x7f5223098259 [ 377.300984][ T646] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 377.320658][ T646] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 377.329048][ T646] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 executing program [ 377.336997][ T646] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 377.344945][ T646] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 377.352924][ T646] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 377.360879][ T646] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 377.417239][ T644] FAULT_INJECTION: forcing a failure. [ 377.417239][ T644] name failslab, interval 1, probability 0, space 0, times 0 [ 377.429964][ T644] CPU: 1 PID: 644 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 377.441584][ T644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 377.451634][ T644] Call Trace: [ 377.454910][ T644] dump_stack_lvl+0x1e2/0x24b [ 377.459656][ T644] ? bfq_pos_tree_add_move+0x43e/0x43e [ 377.465196][ T644] dump_stack+0x15/0x17 [ 377.469456][ T644] should_fail+0x3c0/0x510 [ 377.473876][ T644] ? pids_css_alloc+0x4e/0x120 [ 377.478626][ T644] __should_failslab+0x9f/0xe0 [ 377.483371][ T644] should_failslab+0x9/0x20 [ 377.487867][ T644] kmem_cache_alloc_trace+0x3a/0x330 [ 377.493231][ T644] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 377.498416][ T644] pids_css_alloc+0x4e/0x120 [ 377.502993][ T644] cgroup_apply_control_enable+0x350/0x12f0 [ 377.508870][ T644] cgroup_apply_control+0x93/0x710 [ 377.513973][ T644] ? css_next_child+0x160/0x160 [ 377.518809][ T644] ? io_schedule+0x120/0x120 [ 377.523387][ T644] ? kernfs_fop_write_iter+0x15e/0x410 [ 377.528833][ T644] ? __kasan_check_write+0x14/0x20 [ 377.533946][ T644] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 377.539235][ T644] cgroup_subtree_control_write+0xd19/0x1310 [ 377.545203][ T644] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 377.551346][ T644] ? __kasan_check_write+0x14/0x20 [ 377.556457][ T644] ? _copy_from_iter+0x3fb/0xd60 [ 377.561383][ T644] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 377.567346][ T644] cgroup_file_write+0x28e/0x590 [ 377.572268][ T644] ? cgroup_seqfile_stop+0xc0/0xc0 [ 377.577363][ T644] ? mutex_lock+0xa6/0x110 [ 377.581766][ T644] ? mutex_trylock+0xb0/0xb0 [ 377.586348][ T644] ? __kasan_check_write+0x14/0x20 [ 377.591444][ T644] kernfs_fop_write_iter+0x2d0/0x410 [ 377.596717][ T644] ? cgroup_seqfile_stop+0xc0/0xc0 [ 377.601817][ T644] vfs_write+0xc1c/0xf40 [ 377.606047][ T644] ? kernel_write+0x3c0/0x3c0 [ 377.610709][ T644] ? mutex_trylock+0xb0/0xb0 [ 377.615289][ T644] ? __fdget_pos+0x26d/0x310 [ 377.619866][ T644] ? ksys_write+0x77/0x2c0 [ 377.624267][ T644] ksys_write+0x198/0x2c0 [ 377.628579][ T644] ? __ia32_sys_read+0x90/0x90 [ 377.633332][ T644] ? debug_smp_processor_id+0x17/0x20 [ 377.638707][ T644] __x64_sys_write+0x7b/0x90 [ 377.643286][ T644] do_syscall_64+0x34/0x70 [ 377.647688][ T644] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 377.653560][ T644] RIP: 0033:0x7f5223098259 [ 377.657961][ T644] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 377.677553][ T644] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 377.685953][ T644] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 377.693907][ T644] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 377.701884][ T644] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 377.709841][ T644] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 executing program [ 377.717798][ T644] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 377.756999][ T652] FAULT_INJECTION: forcing a failure. [ 377.756999][ T652] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 377.770310][ T652] CPU: 0 PID: 652 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 377.781925][ T652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 377.791962][ T652] Call Trace: [ 377.795244][ T652] dump_stack_lvl+0x1e2/0x24b [ 377.799987][ T652] ? bfq_pos_tree_add_move+0x43e/0x43e [ 377.805432][ T652] ? __kasan_check_write+0x14/0x20 [ 377.810532][ T652] ? _raw_spin_lock_irq+0xa4/0x1b0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 377.815625][ T652] dump_stack+0x15/0x17 [ 377.819777][ T652] should_fail+0x3c0/0x510 [ 377.824180][ T652] should_fail_alloc_page+0x50/0x60 [ 377.829357][ T652] __alloc_pages_nodemask+0x1c0/0x890 [ 377.835672][ T652] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 377.841813][ T652] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 377.847358][ T652] allocate_slab+0x78/0x540 [ 377.851883][ T652] ___slab_alloc+0x131/0x2e0 [ 377.856463][ T652] ? pids_css_alloc+0x4e/0x120 [ 377.861216][ T652] __slab_alloc+0x63/0xa0 [ 377.865524][ T652] ? pids_css_alloc+0x4e/0x120 [ 377.870272][ T652] kmem_cache_alloc_trace+0x20e/0x330 [ 377.875623][ T652] ? pids_css_alloc+0x4e/0x120 [ 377.880367][ T652] pids_css_alloc+0x4e/0x120 [ 377.885027][ T652] cgroup_apply_control_enable+0x350/0x12f0 [ 377.890900][ T652] cgroup_apply_control+0x93/0x710 [ 377.896089][ T652] ? css_next_child+0x160/0x160 [ 377.900923][ T652] ? release_task_stack+0x529/0x660 [ 377.906102][ T652] ? io_schedule+0x120/0x120 [ 377.910674][ T652] ? kernfs_fop_write_iter+0x15e/0x410 [ 377.916111][ T652] ? __kasan_check_write+0x14/0x20 [ 377.921202][ T652] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 377.926469][ T652] cgroup_subtree_control_write+0xd19/0x1310 [ 377.932427][ T652] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 377.938393][ T652] ? __kasan_check_write+0x14/0x20 [ 377.943487][ T652] ? _copy_from_iter+0x3fb/0xd60 [ 377.948406][ T652] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 377.954360][ T652] cgroup_file_write+0x28e/0x590 [ 377.959276][ T652] ? cgroup_seqfile_stop+0xc0/0xc0 [ 377.964368][ T652] ? mutex_lock+0xa6/0x110 [ 377.968761][ T652] ? mutex_trylock+0xb0/0xb0 [ 377.973766][ T652] ? __kasan_check_write+0x14/0x20 [ 377.978856][ T652] kernfs_fop_write_iter+0x2d0/0x410 [ 377.984118][ T652] ? cgroup_seqfile_stop+0xc0/0xc0 [ 377.989206][ T652] vfs_write+0xc1c/0xf40 [ 377.993428][ T652] ? kernel_write+0x3c0/0x3c0 [ 377.998083][ T652] ? mutex_trylock+0xb0/0xb0 [ 378.002664][ T652] ? __fdget_pos+0x26d/0x310 [ 378.007231][ T652] ? ksys_write+0x77/0x2c0 [ 378.011625][ T652] ksys_write+0x198/0x2c0 [ 378.015929][ T652] ? __ia32_sys_read+0x90/0x90 [ 378.020683][ T652] ? debug_smp_processor_id+0x17/0x20 [ 378.026037][ T652] __x64_sys_write+0x7b/0x90 [ 378.030606][ T652] do_syscall_64+0x34/0x70 [ 378.035005][ T652] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 378.040872][ T652] RIP: 0033:0x7f5223098259 [ 378.045267][ T652] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 378.064854][ T652] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 378.073244][ T652] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 378.081294][ T652] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 378.089247][ T652] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 378.097200][ T652] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 378.105158][ T652] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 378.157215][ T664] FAULT_INJECTION: forcing a failure. [ 378.157215][ T664] name failslab, interval 1, probability 0, space 0, times 0 [ 378.169893][ T664] CPU: 1 PID: 664 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 378.181509][ T664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 378.191630][ T664] Call Trace: [ 378.194903][ T664] dump_stack_lvl+0x1e2/0x24b [ 378.199572][ T664] ? bfq_pos_tree_add_move+0x43e/0x43e [ 378.205006][ T664] dump_stack+0x15/0x17 [ 378.209138][ T664] should_fail+0x3c0/0x510 [ 378.213554][ T664] ? pids_css_alloc+0x4e/0x120 [ 378.218294][ T664] __should_failslab+0x9f/0xe0 [ 378.223041][ T664] should_failslab+0x9/0x20 [ 378.227530][ T664] kmem_cache_alloc_trace+0x3a/0x330 [ 378.232807][ T664] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 378.237989][ T664] pids_css_alloc+0x4e/0x120 [ 378.242568][ T664] cgroup_apply_control_enable+0x350/0x12f0 [ 378.248444][ T664] cgroup_apply_control+0x93/0x710 [ 378.253541][ T664] ? css_next_child+0x160/0x160 [ 378.258374][ T664] ? io_schedule+0x120/0x120 [ 378.262947][ T664] ? kernfs_fop_write_iter+0x15e/0x410 [ 378.268389][ T664] ? __kasan_check_write+0x14/0x20 [ 378.273487][ T664] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 378.278756][ T664] cgroup_subtree_control_write+0xd19/0x1310 [ 378.284732][ T664] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 378.290697][ T664] ? __kasan_check_write+0x14/0x20 [ 378.295810][ T664] ? _copy_from_iter+0x3fb/0xd60 [ 378.300734][ T664] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 378.306693][ T664] cgroup_file_write+0x28e/0x590 [ 378.311611][ T664] ? cgroup_seqfile_stop+0xc0/0xc0 [ 378.316702][ T664] ? mutex_lock+0xa6/0x110 [ 378.321099][ T664] ? mutex_trylock+0xb0/0xb0 [ 378.325671][ T664] ? __kasan_check_write+0x14/0x20 [ 378.330764][ T664] kernfs_fop_write_iter+0x2d0/0x410 [ 378.336035][ T664] ? cgroup_seqfile_stop+0xc0/0xc0 [ 378.341137][ T664] vfs_write+0xc1c/0xf40 [ 378.345461][ T664] ? kernel_write+0x3c0/0x3c0 [ 378.350122][ T664] ? mutex_trylock+0xb0/0xb0 [ 378.354697][ T664] ? __fdget_pos+0x26d/0x310 [ 378.359268][ T664] ? ksys_write+0x77/0x2c0 [ 378.363669][ T664] ksys_write+0x198/0x2c0 [ 378.367983][ T664] ? __ia32_sys_read+0x90/0x90 [ 378.372730][ T664] ? debug_smp_processor_id+0x17/0x20 [ 378.378085][ T664] __x64_sys_write+0x7b/0x90 [ 378.382654][ T664] do_syscall_64+0x34/0x70 [ 378.387076][ T664] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 378.392949][ T664] RIP: 0033:0x7f5223098259 [ 378.397350][ T664] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 378.416942][ T664] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 378.425344][ T664] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 378.433304][ T664] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 378.441260][ T664] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 378.449213][ T664] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 378.457169][ T664] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 378.468342][ T373] ------------[ cut here ]------------ [ 378.473818][ T373] WARNING: CPU: 0 PID: 373 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 378.482787][ T373] Modules linked in: [ 378.486755][ T373] CPU: 0 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 378.498405][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 378.508491][ T373] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 378.514101][ T373] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 378.533724][ T373] RSP: 0018:ffffc90000b67ca0 EFLAGS: 00010293 [ 378.539822][ T373] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a62c0 [ 378.547818][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 378.555786][ T373] RBP: ffffc90000b67d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 378.563789][ T373] R10: fffff5200016cf85 R11: 1ffff9200016cf84 R12: dffffc0000000000 [ 378.571789][ T373] R13: ffff8881100d6c40 R14: ffffc90000b67d00 R15: 1ffff9200016cf9c [ 378.579793][ T373] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 378.588732][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 378.595309][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506b0 [ 378.603331][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 378.611335][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 378.619340][ T373] Call Trace: [ 378.622619][ T373] ? lockref_get_or_lock+0x340/0x340 [ 378.627921][ T373] ? umount_tree+0xf50/0xf50 [ 378.632499][ T373] ? vfs_submount+0xb0/0xb0 [ 378.637010][ T373] ? dput+0x2b6/0x320 [ 378.640989][ T373] path_umount+0x1fe/0xfb0 [ 378.645403][ T373] ? namespace_unlock+0x4f0/0x4f0 [ 378.650429][ T373] ? user_path_at_empty+0x40/0x50 [ 378.655433][ T373] __x64_sys_umount+0x122/0x170 [ 378.660283][ T373] ? path_umount+0xfb0/0xfb0 [ 378.664854][ T373] ? debug_smp_processor_id+0x17/0x20 [ 378.670242][ T373] do_syscall_64+0x34/0x70 [ 378.674643][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 378.680572][ T373] RIP: 0033:0x7f5223099667 [ 378.684976][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 378.704584][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 378.713002][ T373] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 378.720978][ T373] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 378.728953][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 378.736935][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 378.744894][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 378.752874][ T373] ---[ end trace 049b486179639309 ]--- executing program [ 378.758638][ T666] FAULT_INJECTION: forcing a failure. [ 378.758638][ T666] name failslab, interval 1, probability 0, space 0, times 0 [ 378.771339][ T666] CPU: 1 PID: 666 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 378.782940][ T666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 378.792973][ T666] Call Trace: [ 378.796258][ T666] dump_stack_lvl+0x1e2/0x24b [ 378.800915][ T666] ? panic+0x7d7/0x7d7 [ 378.804959][ T666] ? bfq_pos_tree_add_move+0x43e/0x43e [ 378.810396][ T666] ? find_next_bit+0xd6/0x120 [ 378.815076][ T666] ? cpumask_next+0x11/0x30 [ 378.819580][ T666] dump_stack+0x15/0x17 [ 378.823712][ T666] should_fail+0x3c0/0x510 [ 378.828107][ T666] ? percpu_ref_init+0xd0/0x330 [ 378.832932][ T666] __should_failslab+0x9f/0xe0 [ 378.837672][ T666] should_failslab+0x9/0x20 [ 378.842153][ T666] kmem_cache_alloc_trace+0x3a/0x330 [ 378.847417][ T666] percpu_ref_init+0xd0/0x330 [ 378.852075][ T666] ? cgroup_setup_root+0xea0/0xea0 [ 378.857163][ T666] cgroup_apply_control_enable+0x3a2/0x12f0 [ 378.863032][ T666] cgroup_apply_control+0x93/0x710 [ 378.868123][ T666] ? css_next_child+0x160/0x160 [ 378.872950][ T666] ? stack_trace_save+0x12d/0x1f0 [ 378.877952][ T666] ? io_schedule+0x120/0x120 [ 378.882524][ T666] ? kernfs_fop_write_iter+0x15e/0x410 [ 378.887962][ T666] ? __kasan_check_write+0x14/0x20 [ 378.893049][ T666] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 378.898333][ T666] cgroup_subtree_control_write+0xd19/0x1310 [ 378.904291][ T666] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 378.910262][ T666] ? __kasan_check_write+0x14/0x20 [ 378.915354][ T666] ? _copy_from_iter+0x3fb/0xd60 [ 378.920278][ T666] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 378.926249][ T666] cgroup_file_write+0x28e/0x590 [ 378.931170][ T666] ? cgroup_seqfile_stop+0xc0/0xc0 [ 378.936261][ T666] ? mutex_lock+0xa6/0x110 [ 378.940655][ T666] ? mutex_trylock+0xb0/0xb0 [ 378.945230][ T666] ? __kasan_check_write+0x14/0x20 [ 378.950439][ T666] kernfs_fop_write_iter+0x2d0/0x410 [ 378.955702][ T666] ? cgroup_seqfile_stop+0xc0/0xc0 [ 378.960789][ T666] vfs_write+0xc1c/0xf40 [ 378.965009][ T666] ? slab_free_freelist_hook+0xcc/0x1a0 [ 378.970536][ T666] ? kernel_write+0x3c0/0x3c0 [ 378.975208][ T666] ? mutex_trylock+0xb0/0xb0 [ 378.979786][ T666] ? __fdget_pos+0x26d/0x310 [ 378.984377][ T666] ? ksys_write+0x77/0x2c0 [ 378.988778][ T666] ksys_write+0x198/0x2c0 [ 378.993093][ T666] ? __ia32_sys_read+0x90/0x90 [ 378.997842][ T666] ? debug_smp_processor_id+0x17/0x20 [ 379.003198][ T666] __x64_sys_write+0x7b/0x90 [ 379.007777][ T666] do_syscall_64+0x34/0x70 [ 379.012179][ T666] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 379.018071][ T666] RIP: 0033:0x7f5223098259 [ 379.022474][ T666] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 379.042065][ T666] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 379.050464][ T666] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 executing program executing program [ 379.058423][ T666] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 379.066385][ T666] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 379.074350][ T666] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 379.082312][ T666] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 379.117220][ T658] FAULT_INJECTION: forcing a failure. [ 379.117220][ T658] name failslab, interval 1, probability 0, space 0, times 0 [ 379.129944][ T658] CPU: 1 PID: 658 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 379.141551][ T658] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 379.151588][ T658] Call Trace: [ 379.154864][ T658] dump_stack_lvl+0x1e2/0x24b [ 379.159524][ T658] ? panic+0x7d7/0x7d7 [ 379.163573][ T658] ? bfq_pos_tree_add_move+0x43e/0x43e [ 379.169010][ T658] ? find_next_bit+0xd6/0x120 [ 379.173665][ T658] ? cpumask_next+0x11/0x30 [ 379.178179][ T658] dump_stack+0x15/0x17 [ 379.182315][ T658] should_fail+0x3c0/0x510 [ 379.186715][ T658] ? percpu_ref_init+0xd0/0x330 [ 379.191545][ T658] __should_failslab+0x9f/0xe0 [ 379.196294][ T658] should_failslab+0x9/0x20 [ 379.200777][ T658] kmem_cache_alloc_trace+0x3a/0x330 [ 379.206051][ T658] percpu_ref_init+0xd0/0x330 [ 379.210714][ T658] ? cgroup_setup_root+0xea0/0xea0 [ 379.215807][ T658] cgroup_apply_control_enable+0x3a2/0x12f0 [ 379.221683][ T658] cgroup_apply_control+0x93/0x710 [ 379.226783][ T658] ? css_next_child+0x160/0x160 [ 379.231624][ T658] ? io_schedule+0x120/0x120 [ 379.236212][ T658] ? kernfs_fop_write_iter+0x15e/0x410 [ 379.241655][ T658] ? __kasan_check_write+0x14/0x20 [ 379.246752][ T658] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 379.252030][ T658] cgroup_subtree_control_write+0xd19/0x1310 [ 379.257990][ T658] ? cgroup_subtree_control_show+0x1d0/0x1d0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 379.263951][ T658] ? __kasan_check_write+0x14/0x20 [ 379.269062][ T658] ? _copy_from_iter+0x3fb/0xd60 [ 379.273985][ T658] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 379.279947][ T658] cgroup_file_write+0x28e/0x590 [ 379.284869][ T658] ? cgroup_seqfile_stop+0xc0/0xc0 [ 379.289967][ T658] ? mutex_lock+0xa6/0x110 [ 379.294362][ T658] ? mutex_trylock+0xb0/0xb0 [ 379.298931][ T658] ? __kasan_check_write+0x14/0x20 [ 379.304031][ T658] kernfs_fop_write_iter+0x2d0/0x410 [ 379.309298][ T658] ? cgroup_seqfile_stop+0xc0/0xc0 [ 379.314393][ T658] vfs_write+0xc1c/0xf40 [ 379.318630][ T658] ? kernel_write+0x3c0/0x3c0 [ 379.323294][ T658] ? mutex_trylock+0xb0/0xb0 [ 379.327875][ T658] ? __fdget_pos+0x26d/0x310 [ 379.332444][ T658] ? ksys_write+0x77/0x2c0 [ 379.336837][ T658] ksys_write+0x198/0x2c0 [ 379.341147][ T658] ? __ia32_sys_read+0x90/0x90 [ 379.345891][ T658] ? debug_smp_processor_id+0x17/0x20 [ 379.351243][ T658] __x64_sys_write+0x7b/0x90 [ 379.355814][ T658] do_syscall_64+0x34/0x70 [ 379.360211][ T658] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 379.366093][ T658] RIP: 0033:0x7f5223098259 [ 379.370488][ T658] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 379.390083][ T658] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 379.398491][ T658] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 379.406446][ T658] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 379.414408][ T658] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 379.422361][ T658] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 379.430313][ T658] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 379.477232][ T651] FAULT_INJECTION: forcing a failure. [ 379.477232][ T651] name failslab, interval 1, probability 0, space 0, times 0 [ 379.489976][ T651] CPU: 1 PID: 651 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 379.501575][ T651] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 379.511609][ T651] Call Trace: [ 379.514882][ T651] dump_stack_lvl+0x1e2/0x24b [ 379.519540][ T651] ? panic+0x7d7/0x7d7 [ 379.523630][ T651] ? bfq_pos_tree_add_move+0x43e/0x43e [ 379.529074][ T651] ? find_next_bit+0xd6/0x120 [ 379.533735][ T651] ? cpumask_next+0x11/0x30 [ 379.538222][ T651] dump_stack+0x15/0x17 [ 379.542356][ T651] should_fail+0x3c0/0x510 [ 379.546750][ T651] ? percpu_ref_init+0xd0/0x330 [ 379.551605][ T651] __should_failslab+0x9f/0xe0 [ 379.556347][ T651] should_failslab+0x9/0x20 [ 379.560829][ T651] kmem_cache_alloc_trace+0x3a/0x330 [ 379.566095][ T651] percpu_ref_init+0xd0/0x330 [ 379.570754][ T651] ? cgroup_setup_root+0xea0/0xea0 [ 379.575845][ T651] cgroup_apply_control_enable+0x3a2/0x12f0 [ 379.581722][ T651] cgroup_apply_control+0x93/0x710 [ 379.586814][ T651] ? css_next_child+0x160/0x160 [ 379.591679][ T651] ? release_task_stack+0x529/0x660 [ 379.596866][ T651] ? io_schedule+0x120/0x120 [ 379.601437][ T651] ? kernfs_fop_write_iter+0x15e/0x410 [ 379.606878][ T651] ? __kasan_check_write+0x14/0x20 [ 379.611969][ T651] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 379.617233][ T651] cgroup_subtree_control_write+0xd19/0x1310 [ 379.623203][ T651] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 379.629166][ T651] ? __kasan_check_write+0x14/0x20 [ 379.634261][ T651] ? _copy_from_iter+0x3fb/0xd60 [ 379.639196][ T651] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 379.645161][ T651] cgroup_file_write+0x28e/0x590 [ 379.650083][ T651] ? cgroup_seqfile_stop+0xc0/0xc0 [ 379.655171][ T651] ? mutex_lock+0xa6/0x110 [ 379.659567][ T651] ? mutex_trylock+0xb0/0xb0 [ 379.664138][ T651] ? __kasan_check_write+0x14/0x20 [ 379.669252][ T651] kernfs_fop_write_iter+0x2d0/0x410 [ 379.674528][ T651] ? cgroup_seqfile_stop+0xc0/0xc0 [ 379.679616][ T651] vfs_write+0xc1c/0xf40 [ 379.683851][ T651] ? kernel_write+0x3c0/0x3c0 [ 379.688507][ T651] ? mutex_trylock+0xb0/0xb0 [ 379.693075][ T651] ? __fdget_pos+0x26d/0x310 [ 379.697642][ T651] ? ksys_write+0x77/0x2c0 [ 379.702035][ T651] ksys_write+0x198/0x2c0 [ 379.706372][ T651] ? __ia32_sys_read+0x90/0x90 [ 379.711145][ T651] ? debug_smp_processor_id+0x17/0x20 [ 379.716500][ T651] __x64_sys_write+0x7b/0x90 [ 379.721072][ T651] do_syscall_64+0x34/0x70 [ 379.725468][ T651] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 379.731340][ T651] RIP: 0033:0x7f5223098259 [ 379.735743][ T651] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 379.756122][ T651] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 379.764517][ T651] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 executing program [ 379.772469][ T651] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 379.780423][ T651] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 379.788392][ T651] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 379.796361][ T651] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 379.847093][ T661] FAULT_INJECTION: forcing a failure. [ 379.847093][ T661] name failslab, interval 1, probability 0, space 0, times 0 [ 379.859950][ T661] CPU: 0 PID: 661 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 379.871567][ T661] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 379.881726][ T661] Call Trace: [ 379.885005][ T661] dump_stack_lvl+0x1e2/0x24b [ 379.889662][ T661] ? bfq_pos_tree_add_move+0x43e/0x43e [ 379.895100][ T661] dump_stack+0x15/0x17 [ 379.899236][ T661] should_fail+0x3c0/0x510 [ 379.903645][ T661] ? pids_css_alloc+0x4e/0x120 [ 379.908448][ T661] __should_failslab+0x9f/0xe0 [ 379.913191][ T661] should_failslab+0x9/0x20 [ 379.917677][ T661] kmem_cache_alloc_trace+0x3a/0x330 [ 379.922962][ T661] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 379.928142][ T661] pids_css_alloc+0x4e/0x120 [ 379.932719][ T661] cgroup_apply_control_enable+0x350/0x12f0 [ 379.938596][ T661] cgroup_apply_control+0x93/0x710 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 379.943688][ T661] ? css_next_child+0x160/0x160 [ 379.948519][ T661] ? release_task_stack+0x56a/0x660 [ 379.953718][ T661] ? io_schedule+0x120/0x120 [ 379.958290][ T661] ? kernfs_fop_write_iter+0x15e/0x410 [ 379.963728][ T661] ? __kasan_check_write+0x14/0x20 [ 379.968815][ T661] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 379.974093][ T661] cgroup_subtree_control_write+0xd19/0x1310 [ 379.980060][ T661] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 379.986023][ T661] ? __kasan_check_write+0x14/0x20 [ 379.991113][ T661] ? _copy_from_iter+0x3fb/0xd60 [ 379.996025][ T661] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 380.001985][ T661] cgroup_file_write+0x28e/0x590 [ 380.006902][ T661] ? cgroup_seqfile_stop+0xc0/0xc0 [ 380.011996][ T661] ? mutex_lock+0xa6/0x110 [ 380.016401][ T661] ? mutex_trylock+0xb0/0xb0 [ 380.020984][ T661] ? __kasan_check_write+0x14/0x20 [ 380.026076][ T661] kernfs_fop_write_iter+0x2d0/0x410 [ 380.031340][ T661] ? cgroup_seqfile_stop+0xc0/0xc0 [ 380.036431][ T661] vfs_write+0xc1c/0xf40 [ 380.040653][ T661] ? kernel_write+0x3c0/0x3c0 [ 380.045306][ T661] ? mutex_trylock+0xb0/0xb0 [ 380.049876][ T661] ? __fdget_pos+0x26d/0x310 [ 380.054459][ T661] ? ksys_write+0x77/0x2c0 [ 380.058849][ T661] ksys_write+0x198/0x2c0 [ 380.063158][ T661] ? __ia32_sys_read+0x90/0x90 [ 380.067899][ T661] ? debug_smp_processor_id+0x17/0x20 [ 380.073247][ T661] __x64_sys_write+0x7b/0x90 [ 380.077815][ T661] do_syscall_64+0x34/0x70 [ 380.082210][ T661] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 380.088093][ T661] RIP: 0033:0x7f5223098259 [ 380.092503][ T661] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 380.112087][ T661] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 380.120482][ T661] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 380.128448][ T661] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 380.136421][ T661] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 executing program [ 380.144391][ T661] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 380.152346][ T661] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 380.217241][ T678] FAULT_INJECTION: forcing a failure. [ 380.217241][ T678] name failslab, interval 1, probability 0, space 0, times 0 [ 380.230027][ T678] CPU: 0 PID: 678 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 380.241657][ T678] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 380.251702][ T678] Call Trace: [ 380.254980][ T678] dump_stack_lvl+0x1e2/0x24b [ 380.259655][ T678] ? bfq_pos_tree_add_move+0x43e/0x43e write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 380.265096][ T678] ? selinux_kernfs_init_security+0x1a8/0x760 [ 380.271140][ T678] dump_stack+0x15/0x17 [ 380.275276][ T678] should_fail+0x3c0/0x510 [ 380.279670][ T678] ? __kernfs_new_node+0x99/0x6e0 [ 380.284678][ T678] __should_failslab+0x9f/0xe0 [ 380.289426][ T678] should_failslab+0x9/0x20 [ 380.293905][ T678] __kmalloc_track_caller+0x5f/0x350 [ 380.299168][ T678] kstrdup_const+0x55/0x90 [ 380.303572][ T678] __kernfs_new_node+0x99/0x6e0 [ 380.308410][ T678] ? is_module_text_address+0xe1/0x140 [ 380.313859][ T678] ? kernfs_new_node+0x170/0x170 [ 380.318783][ T678] ? ptr_to_hashval+0x60/0x60 [ 380.323443][ T678] ? arch_stack_walk+0xf8/0x140 [ 380.328281][ T678] ? snprintf+0xd6/0x120 [ 380.332510][ T678] kernfs_new_node+0x97/0x170 [ 380.337170][ T678] __kernfs_create_file+0x4a/0x270 [ 380.342265][ T678] cgroup_addrm_files+0xab8/0xfe0 [ 380.347276][ T678] ? ____kasan_kmalloc+0xdc/0x110 [ 380.352284][ T678] ? __kasan_kmalloc+0x9/0x10 [ 380.356951][ T678] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 380.362491][ T678] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 380.368634][ T678] ? delete_node+0x759/0x7b0 [ 380.373212][ T678] ? __kasan_check_read+0x11/0x20 [ 380.378222][ T678] ? delete_node+0x759/0x7b0 [ 380.382799][ T678] ? __kasan_check_write+0x14/0x20 [ 380.387897][ T678] ? idr_replace+0x1c4/0x230 [ 380.392473][ T678] ? idr_get_next+0x4b0/0x4b0 [ 380.397138][ T678] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 380.402143][ T678] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 380.407326][ T678] css_populate_dir+0x137/0x370 [ 380.412166][ T678] cgroup_apply_control_enable+0x8b9/0x12f0 [ 380.418046][ T678] cgroup_apply_control+0x93/0x710 [ 380.423141][ T678] ? css_next_child+0x160/0x160 [ 380.427974][ T678] ? io_schedule+0x120/0x120 [ 380.432550][ T678] ? kernfs_fop_write_iter+0x15e/0x410 [ 380.438015][ T678] ? __kasan_check_write+0x14/0x20 [ 380.443110][ T678] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 380.448379][ T678] cgroup_subtree_control_write+0xd19/0x1310 [ 380.454351][ T678] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 380.460316][ T678] ? __kasan_check_write+0x14/0x20 [ 380.465414][ T678] ? _copy_from_iter+0x3fb/0xd60 [ 380.470329][ T678] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 380.476293][ T678] cgroup_file_write+0x28e/0x590 [ 380.481305][ T678] ? cgroup_seqfile_stop+0xc0/0xc0 [ 380.486414][ T678] ? mutex_lock+0xa6/0x110 [ 380.490814][ T678] ? mutex_trylock+0xb0/0xb0 [ 380.495398][ T678] ? __kasan_check_write+0x14/0x20 [ 380.500496][ T678] kernfs_fop_write_iter+0x2d0/0x410 [ 380.506472][ T678] ? cgroup_seqfile_stop+0xc0/0xc0 [ 380.511569][ T678] vfs_write+0xc1c/0xf40 [ 380.515802][ T678] ? kernel_write+0x3c0/0x3c0 [ 380.520467][ T678] ? mutex_trylock+0xb0/0xb0 [ 380.525043][ T678] ? __fdget_pos+0x26d/0x310 [ 380.529617][ T678] ? ksys_write+0x77/0x2c0 [ 380.534014][ T678] ksys_write+0x198/0x2c0 [ 380.538333][ T678] ? __ia32_sys_read+0x90/0x90 [ 380.543085][ T678] ? debug_smp_processor_id+0x17/0x20 [ 380.548466][ T678] __x64_sys_write+0x7b/0x90 [ 380.553040][ T678] do_syscall_64+0x34/0x70 [ 380.557439][ T678] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 380.563324][ T678] RIP: 0033:0x7f5223098259 [ 380.567727][ T678] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 380.587322][ T678] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 380.595726][ T678] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 380.603767][ T678] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 380.611719][ T678] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 380.619671][ T678] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 380.627624][ T678] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 380.635927][ T678] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 380.657091][ T680] FAULT_INJECTION: forcing a failure. [ 380.657091][ T680] name failslab, interval 1, probability 0, space 0, times 0 [ 380.669843][ T680] CPU: 1 PID: 680 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 380.681463][ T680] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 380.691508][ T680] Call Trace: [ 380.694786][ T680] dump_stack_lvl+0x1e2/0x24b [ 380.699445][ T680] ? panic+0x7d7/0x7d7 [ 380.703497][ T680] ? bfq_pos_tree_add_move+0x43e/0x43e [ 380.708934][ T680] ? find_next_bit+0xd6/0x120 [ 380.713587][ T680] ? cpumask_next+0x11/0x30 [ 380.718065][ T680] dump_stack+0x15/0x17 [ 380.722198][ T680] should_fail+0x3c0/0x510 [ 380.726590][ T680] ? percpu_ref_init+0xd0/0x330 [ 380.731419][ T680] __should_failslab+0x9f/0xe0 [ 380.736165][ T680] should_failslab+0x9/0x20 [ 380.740649][ T680] kmem_cache_alloc_trace+0x3a/0x330 [ 380.745913][ T680] percpu_ref_init+0xd0/0x330 [ 380.750567][ T680] ? cgroup_setup_root+0xea0/0xea0 [ 380.755657][ T680] cgroup_apply_control_enable+0x3a2/0x12f0 [ 380.761547][ T680] cgroup_apply_control+0x93/0x710 [ 380.766674][ T680] ? css_next_child+0x160/0x160 [ 380.771500][ T680] ? stack_trace_save+0x12d/0x1f0 [ 380.776506][ T680] ? io_schedule+0x120/0x120 [ 380.781070][ T680] ? kernfs_fop_write_iter+0x15e/0x410 [ 380.786505][ T680] ? __kasan_check_write+0x14/0x20 [ 380.791598][ T680] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 380.796873][ T680] cgroup_subtree_control_write+0xd19/0x1310 [ 380.802838][ T680] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 380.808799][ T680] ? __kasan_check_write+0x14/0x20 [ 380.813888][ T680] ? _copy_from_iter+0x3fb/0xd60 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 380.818803][ T680] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 380.824757][ T680] cgroup_file_write+0x28e/0x590 [ 380.829671][ T680] ? cgroup_seqfile_stop+0xc0/0xc0 [ 380.834757][ T680] ? mutex_lock+0xa6/0x110 [ 380.839152][ T680] ? mutex_trylock+0xb0/0xb0 [ 380.843739][ T680] ? __kasan_check_write+0x14/0x20 [ 380.848834][ T680] kernfs_fop_write_iter+0x2d0/0x410 [ 380.854099][ T680] ? cgroup_seqfile_stop+0xc0/0xc0 [ 380.859185][ T680] vfs_write+0xc1c/0xf40 [ 380.863423][ T680] ? slab_free_freelist_hook+0xcc/0x1a0 [ 380.868965][ T680] ? kernel_write+0x3c0/0x3c0 [ 380.873621][ T680] ? mutex_trylock+0xb0/0xb0 [ 380.878187][ T680] ? __fdget_pos+0x26d/0x310 [ 380.882751][ T680] ? ksys_write+0x77/0x2c0 [ 380.887150][ T680] ksys_write+0x198/0x2c0 [ 380.891459][ T680] ? __ia32_sys_read+0x90/0x90 [ 380.896292][ T680] ? debug_smp_processor_id+0x17/0x20 [ 380.901642][ T680] __x64_sys_write+0x7b/0x90 [ 380.906207][ T680] do_syscall_64+0x34/0x70 [ 380.910602][ T680] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 380.916470][ T680] RIP: 0033:0x7f5223098259 [ 380.920862][ T680] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 380.940446][ T680] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 380.948837][ T680] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 380.956788][ T680] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 380.964740][ T680] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 380.972684][ T680] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 380.980632][ T680] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 381.037188][ T655] FAULT_INJECTION: forcing a failure. [ 381.037188][ T655] name failslab, interval 1, probability 0, space 0, times 0 [ 381.049904][ T655] CPU: 0 PID: 655 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 381.061506][ T655] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 381.071545][ T655] Call Trace: [ 381.074836][ T655] dump_stack_lvl+0x1e2/0x24b [ 381.079498][ T655] ? panic+0x7d7/0x7d7 [ 381.083548][ T655] ? bfq_pos_tree_add_move+0x43e/0x43e [ 381.088982][ T655] ? find_next_bit+0xd6/0x120 [ 381.093630][ T655] ? cpumask_next+0x11/0x30 [ 381.098121][ T655] dump_stack+0x15/0x17 [ 381.102263][ T655] should_fail+0x3c0/0x510 [ 381.106662][ T655] ? percpu_ref_init+0xd0/0x330 [ 381.111488][ T655] __should_failslab+0x9f/0xe0 [ 381.116230][ T655] should_failslab+0x9/0x20 [ 381.120715][ T655] kmem_cache_alloc_trace+0x3a/0x330 [ 381.125981][ T655] percpu_ref_init+0xd0/0x330 [ 381.130645][ T655] ? cgroup_setup_root+0xea0/0xea0 [ 381.135756][ T655] cgroup_apply_control_enable+0x3a2/0x12f0 [ 381.141635][ T655] cgroup_apply_control+0x93/0x710 [ 381.146730][ T655] ? css_next_child+0x160/0x160 [ 381.151565][ T655] ? io_schedule+0x120/0x120 [ 381.156138][ T655] ? kernfs_fop_write_iter+0x15e/0x410 [ 381.161578][ T655] ? __kasan_check_write+0x14/0x20 [ 381.166670][ T655] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 381.172283][ T655] cgroup_subtree_control_write+0xd19/0x1310 [ 381.178269][ T655] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 381.184231][ T655] ? __kasan_check_write+0x14/0x20 [ 381.189326][ T655] ? _copy_from_iter+0x3fb/0xd60 [ 381.194260][ T655] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 381.200222][ T655] cgroup_file_write+0x28e/0x590 [ 381.205144][ T655] ? cgroup_seqfile_stop+0xc0/0xc0 [ 381.210237][ T655] ? mutex_lock+0xa6/0x110 [ 381.214633][ T655] ? mutex_trylock+0xb0/0xb0 [ 381.219294][ T655] ? __kasan_check_write+0x14/0x20 [ 381.224389][ T655] kernfs_fop_write_iter+0x2d0/0x410 [ 381.229662][ T655] ? cgroup_seqfile_stop+0xc0/0xc0 [ 381.234754][ T655] vfs_write+0xc1c/0xf40 [ 381.238985][ T655] ? kernel_write+0x3c0/0x3c0 [ 381.243647][ T655] ? mutex_trylock+0xb0/0xb0 [ 381.248222][ T655] ? __fdget_pos+0x26d/0x310 [ 381.252795][ T655] ? ksys_write+0x77/0x2c0 [ 381.257196][ T655] ksys_write+0x198/0x2c0 [ 381.261524][ T655] ? __ia32_sys_read+0x90/0x90 [ 381.266270][ T655] ? debug_smp_processor_id+0x17/0x20 [ 381.271628][ T655] __x64_sys_write+0x7b/0x90 [ 381.276200][ T655] do_syscall_64+0x34/0x70 [ 381.280597][ T655] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 381.286476][ T655] RIP: 0033:0x7f5223098259 [ 381.290872][ T655] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 381.310461][ T655] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 381.318860][ T655] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 381.326815][ T655] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 381.334790][ T655] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 381.342747][ T655] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 381.350701][ T655] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 381.360779][ T374] ------------[ cut here ]------------ [ 381.366290][ T374] WARNING: CPU: 1 PID: 374 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 381.375267][ T374] Modules linked in: write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 381.379206][ T374] CPU: 1 PID: 374 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 381.390853][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 381.400933][ T374] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 381.406550][ T374] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 381.426278][ T374] RSP: 0018:ffffc90000b77ba0 EFLAGS: 00010293 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 381.432433][ T374] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a4f00 [ 381.440425][ T374] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 381.448491][ T374] RBP: ffffc90000b77c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 381.456458][ T374] R10: fffff5200016ef65 R11: 1ffff9200016ef64 R12: dffffc0000000000 [ 381.464462][ T374] R13: ffff8881100d6a80 R14: ffffc90000b77c00 R15: 1ffff9200016ef7c [ 381.472456][ T374] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 381.481409][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 381.488012][ T374] CR2: 000055555703b738 CR3: 0000000106fe2000 CR4: 00000000003506a0 [ 381.495970][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 381.504082][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 381.512081][ T374] Call Trace: [ 381.515362][ T374] ? io_schedule+0x120/0x120 [ 381.519974][ T374] ? vfs_submount+0xb0/0xb0 [ 381.524490][ T374] ? shrink_dentry_list+0x4ec/0x500 [ 381.529716][ T374] ? __kasan_check_write+0x14/0x20 [ 381.534816][ T374] namespace_unlock+0x448/0x4f0 [ 381.539700][ T374] ? umount_tree+0xf50/0xf50 [ 381.544276][ T374] ? __detach_mounts+0x670/0x670 [ 381.549230][ T374] ? selinux_umount+0xf0/0x130 [ 381.553985][ T374] ? security_sb_umount+0x9d/0xb0 [ 381.559029][ T374] path_umount+0xf03/0xfb0 [ 381.563436][ T374] ? namespace_unlock+0x4f0/0x4f0 [ 381.568487][ T374] ? user_path_at_empty+0x40/0x50 [ 381.573498][ T374] __x64_sys_umount+0x122/0x170 [ 381.578353][ T374] ? path_umount+0xfb0/0xfb0 [ 381.582949][ T374] ? debug_smp_processor_id+0x17/0x20 [ 381.588356][ T374] do_syscall_64+0x34/0x70 [ 381.592764][ T374] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 381.598671][ T374] RIP: 0033:0x7f5223099667 [ 381.603074][ T374] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 381.622705][ T374] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 381.631157][ T374] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 381.639139][ T374] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 381.647125][ T374] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 381.655084][ T374] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 381.663073][ T374] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 381.671076][ T374] ---[ end trace 049b48617963930a ]--- [ 381.676626][ T374] ------------[ cut here ]------------ [ 381.682134][ T374] WARNING: CPU: 0 PID: 374 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 381.691068][ T374] Modules linked in: [ 381.694965][ T374] CPU: 0 PID: 374 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 381.706612][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 381.716694][ T374] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 381.722310][ T374] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 381.741917][ T374] RSP: 0018:ffffc90000b77ca0 EFLAGS: 00010293 [ 381.747993][ T374] RAX: ffffffff81b68cba RBX: 00000000fffffffd RCX: ffff8881073a4f00 [ 381.755957][ T374] RDX: 0000000000000000 RSI: 00000000fffffffd RDI: 0000000000000000 [ 381.757198][ T688] FAULT_INJECTION: forcing a failure. [ 381.757198][ T688] name failslab, interval 1, probability 0, space 0, times 0 [ 381.763936][ T374] RBP: ffffc90000b77d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 381.763944][ T374] R10: fffff5200016ef85 R11: 1ffff9200016ef84 R12: dffffc0000000000 [ 381.763959][ T374] R13: ffff8881100d6a80 R14: ffffc90000b77d00 R15: 1ffff9200016ef9c [ 381.791739][ T688] CPU: 1 PID: 688 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 381.792461][ T374] FS: 0000555557031400(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 381.800409][ T688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 381.800415][ T688] Call Trace: [ 381.800441][ T688] dump_stack_lvl+0x1e2/0x24b [ 381.800461][ T688] ? panic+0x7d7/0x7d7 [ 381.812078][ T374] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 381.820966][ T688] ? bfq_pos_tree_add_move+0x43e/0x43e [ 381.820984][ T688] ? find_next_bit+0xd6/0x120 [ 381.831113][ T374] CR2: 00007f52230e1a38 CR3: 0000000106fe2000 CR4: 00000000003506b0 [ 381.834373][ T688] ? cpumask_next+0x11/0x30 [ 381.839028][ T374] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 381.843062][ T688] dump_stack+0x15/0x17 [ 381.849628][ T374] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 381.855055][ T688] should_fail+0x3c0/0x510 [ 381.859711][ T374] Call Trace: [ 381.867737][ T688] ? percpu_ref_init+0xd0/0x330 [ 381.867756][ T688] __should_failslab+0x9f/0xe0 [ 381.872236][ T374] ? lockref_get_or_lock+0x340/0x340 [ 381.880179][ T688] should_failslab+0x9/0x20 [ 381.880190][ T688] kmem_cache_alloc_trace+0x3a/0x330 [ 381.880205][ T688] percpu_ref_init+0xd0/0x330 [ 381.884343][ T374] ? umount_tree+0xf50/0xf50 [ 381.892284][ T688] ? cgroup_setup_root+0xea0/0xea0 [ 381.892304][ T688] cgroup_apply_control_enable+0x3a2/0x12f0 [ 381.896705][ T374] ? vfs_submount+0xb0/0xb0 [ 381.899960][ T688] cgroup_apply_control+0x93/0x710 [ 381.904787][ T374] ? dput+0x2b6/0x320 [ 381.909514][ T688] ? css_next_child+0x160/0x160 [ 381.909525][ T688] ? release_task_stack+0x56a/0x660 [ 381.909542][ T688] ? io_schedule+0x120/0x120 [ 381.914806][ T374] path_umount+0x1fe/0xfb0 [ 381.919274][ T688] ? kernfs_fop_write_iter+0x15e/0x410 [ 381.919285][ T688] ? __kasan_check_write+0x14/0x20 [ 381.919303][ T688] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 381.924565][ T374] ? namespace_unlock+0x4f0/0x4f0 [ 381.929208][ T688] cgroup_subtree_control_write+0xd19/0x1310 [ 381.929218][ T688] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 381.929235][ T688] ? __kasan_check_write+0x14/0x20 [ 381.933801][ T374] ? user_path_at_empty+0x40/0x50 [ 381.938876][ T688] ? _copy_from_iter+0x3fb/0xd60 [ 381.938886][ T688] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 381.938900][ T688] cgroup_file_write+0x28e/0x590 [ 381.944768][ T374] __x64_sys_umount+0x122/0x170 [ 381.949242][ T688] ? cgroup_seqfile_stop+0xc0/0xc0 [ 381.949252][ T688] ? mutex_lock+0xa6/0x110 [ 381.949268][ T688] ? mutex_trylock+0xb0/0xb0 [ 381.954359][ T374] ? path_umount+0xfb0/0xfb0 [ 381.958305][ T688] ? __kasan_check_write+0x14/0x20 [ 381.958315][ T688] kernfs_fop_write_iter+0x2d0/0x410 [ 381.958330][ T688] ? cgroup_seqfile_stop+0xc0/0xc0 [ 381.963156][ T374] ? debug_smp_processor_id+0x17/0x20 [ 381.968319][ T688] vfs_write+0xc1c/0xf40 [ 381.968331][ T688] ? kernel_write+0x3c0/0x3c0 [ 381.968347][ T688] ? mutex_trylock+0xb0/0xb0 [ 381.972911][ T374] do_syscall_64+0x34/0x70 [ 381.977298][ T688] ? __fdget_pos+0x26d/0x310 [ 381.977306][ T688] ? ksys_write+0x77/0x2c0 [ 381.977322][ T688] ksys_write+0x198/0x2c0 [ 381.982760][ T374] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 381.987834][ T688] ? __ia32_sys_read+0x90/0x90 [ 381.987845][ T688] ? debug_smp_processor_id+0x17/0x20 [ 381.987861][ T688] __x64_sys_write+0x7b/0x90 [ 381.993130][ T374] RIP: 0033:0x7f5223099667 [ 381.998123][ T688] do_syscall_64+0x34/0x70 [ 381.998132][ T688] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 381.998146][ T688] RIP: 0033:0x7f5223098259 [ 382.004188][ T374] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 382.010133][ T688] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 382.010140][ T688] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 382.015239][ T374] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 [ 382.020229][ T688] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 382.020235][ T688] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 382.020241][ T688] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 382.020254][ T688] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 382.025161][ T374] ORIG_RAX: 00000000000000a6 [ 382.031108][ T688] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 382.249584][ T374] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 382.257556][ T374] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 382.265517][ T374] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 382.273489][ T374] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 382.281456][ T374] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 executing program executing program [ 382.289439][ T374] ---[ end trace 049b48617963930b ]--- [ 382.317141][ T685] FAULT_INJECTION: forcing a failure. [ 382.317141][ T685] name failslab, interval 1, probability 0, space 0, times 0 [ 382.329893][ T685] CPU: 0 PID: 685 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 382.341494][ T685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 382.351532][ T685] Call Trace: [ 382.354804][ T685] dump_stack_lvl+0x1e2/0x24b [ 382.359467][ T685] ? panic+0x7d7/0x7d7 [ 382.363514][ T685] ? bfq_pos_tree_add_move+0x43e/0x43e [ 382.368952][ T685] ? selinux_kernfs_init_security+0x1a8/0x760 [ 382.374999][ T685] dump_stack+0x15/0x17 [ 382.379136][ T685] should_fail+0x3c0/0x510 [ 382.383535][ T685] __should_failslab+0x9f/0xe0 [ 382.388276][ T685] should_failslab+0x9/0x20 [ 382.392764][ T685] kmem_cache_alloc+0x3f/0x300 [ 382.397504][ T685] ? __kernfs_new_node+0xdb/0x6e0 [ 382.402509][ T685] __kernfs_new_node+0xdb/0x6e0 [ 382.407348][ T685] ? is_module_text_address+0xe1/0x140 [ 382.412796][ T685] ? kernfs_new_node+0x170/0x170 [ 382.417720][ T685] ? ptr_to_hashval+0x60/0x60 [ 382.422388][ T685] ? snprintf+0xd6/0x120 [ 382.426623][ T685] ? __kasan_check_write+0x14/0x20 [ 382.431720][ T685] ? mutex_unlock+0x1d/0x40 [ 382.436210][ T685] kernfs_new_node+0x97/0x170 [ 382.440884][ T685] __kernfs_create_file+0x4a/0x270 [ 382.445978][ T685] cgroup_addrm_files+0xab8/0xfe0 [ 382.450993][ T685] ? ____kasan_kmalloc+0xdc/0x110 [ 382.455993][ T685] ? __kasan_kmalloc+0x9/0x10 [ 382.460655][ T685] ? kmem_cache_alloc_trace+0x1dd/0x330 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 382.466179][ T685] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 382.472313][ T685] ? delete_node+0x759/0x7b0 [ 382.476894][ T685] ? __kasan_check_read+0x11/0x20 [ 382.481901][ T685] ? idr_replace+0x1c4/0x230 [ 382.486484][ T685] ? idr_get_next+0x4b0/0x4b0 [ 382.491146][ T685] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 382.496167][ T685] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 382.501347][ T685] css_populate_dir+0x137/0x370 [ 382.506180][ T685] cgroup_apply_control_enable+0x8b9/0x12f0 [ 382.512074][ T685] cgroup_apply_control+0x93/0x710 [ 382.517172][ T685] ? css_next_child+0x160/0x160 [ 382.522003][ T685] ? release_task_stack+0x529/0x660 [ 382.527183][ T685] ? io_schedule+0x120/0x120 [ 382.531757][ T685] ? kernfs_fop_write_iter+0x15e/0x410 [ 382.537210][ T685] ? __kasan_check_write+0x14/0x20 [ 382.542302][ T685] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 382.547568][ T685] cgroup_subtree_control_write+0xd19/0x1310 [ 382.553530][ T685] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 382.559492][ T685] ? __kasan_check_write+0x14/0x20 [ 382.564581][ T685] ? _copy_from_iter+0x3fb/0xd60 [ 382.569496][ T685] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 382.575505][ T685] cgroup_file_write+0x28e/0x590 [ 382.580428][ T685] ? cgroup_seqfile_stop+0xc0/0xc0 [ 382.585527][ T685] ? mutex_lock+0xa6/0x110 [ 382.589924][ T685] ? mutex_trylock+0xb0/0xb0 [ 382.594505][ T685] ? __kasan_check_write+0x14/0x20 [ 382.599600][ T685] kernfs_fop_write_iter+0x2d0/0x410 [ 382.604866][ T685] ? cgroup_seqfile_stop+0xc0/0xc0 [ 382.609958][ T685] vfs_write+0xc1c/0xf40 [ 382.614181][ T685] ? kernel_write+0x3c0/0x3c0 [ 382.618848][ T685] ? mutex_trylock+0xb0/0xb0 [ 382.623418][ T685] ? __fdget_pos+0x26d/0x310 [ 382.627989][ T685] ? ksys_write+0x77/0x2c0 [ 382.632484][ T685] ksys_write+0x198/0x2c0 [ 382.636800][ T685] ? __ia32_sys_read+0x90/0x90 [ 382.641550][ T685] ? debug_smp_processor_id+0x17/0x20 [ 382.646899][ T685] __x64_sys_write+0x7b/0x90 [ 382.651484][ T685] do_syscall_64+0x34/0x70 [ 382.655878][ T685] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 382.661749][ T685] RIP: 0033:0x7f5223098259 [ 382.666142][ T685] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 382.685734][ T685] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 382.694140][ T685] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 382.702092][ T685] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 382.710045][ T685] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 executing program [ 382.717995][ T685] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 382.726041][ T685] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 382.734166][ T685] cgroup: cgroup_addrm_files: failed to add events, err=-12 [ 382.757277][ T674] FAULT_INJECTION: forcing a failure. [ 382.757277][ T674] name failslab, interval 1, probability 0, space 0, times 0 [ 382.769935][ T674] CPU: 1 PID: 674 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 382.781547][ T674] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 382.791594][ T674] Call Trace: [ 382.794867][ T674] dump_stack_lvl+0x1e2/0x24b [ 382.799523][ T674] ? bfq_pos_tree_add_move+0x43e/0x43e [ 382.804960][ T674] dump_stack+0x15/0x17 [ 382.809093][ T674] should_fail+0x3c0/0x510 [ 382.813488][ T674] ? pids_css_alloc+0x4e/0x120 [ 382.818232][ T674] __should_failslab+0x9f/0xe0 [ 382.823151][ T674] should_failslab+0x9/0x20 [ 382.827643][ T674] kmem_cache_alloc_trace+0x3a/0x330 [ 382.832918][ T674] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 382.838097][ T674] pids_css_alloc+0x4e/0x120 [ 382.842787][ T674] cgroup_apply_control_enable+0x350/0x12f0 [ 382.848662][ T674] cgroup_apply_control+0x93/0x710 [ 382.853752][ T674] ? css_next_child+0x160/0x160 [ 382.858581][ T674] ? io_schedule+0x120/0x120 [ 382.863148][ T674] ? kernfs_fop_write_iter+0x15e/0x410 [ 382.868587][ T674] ? __kasan_check_write+0x14/0x20 [ 382.873691][ T674] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 382.878976][ T674] cgroup_subtree_control_write+0xd19/0x1310 [ 382.884956][ T674] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 382.890937][ T674] ? __kasan_check_write+0x14/0x20 [ 382.896036][ T674] ? _copy_from_iter+0x3fb/0xd60 [ 382.900965][ T674] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 382.906927][ T674] cgroup_file_write+0x28e/0x590 [ 382.911847][ T674] ? cgroup_seqfile_stop+0xc0/0xc0 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 382.916939][ T674] ? mutex_lock+0xa6/0x110 [ 382.921337][ T674] ? mutex_trylock+0xb0/0xb0 [ 382.925909][ T674] ? __kasan_check_write+0x14/0x20 [ 382.931007][ T674] kernfs_fop_write_iter+0x2d0/0x410 [ 382.936282][ T674] ? cgroup_seqfile_stop+0xc0/0xc0 [ 382.941378][ T674] vfs_write+0xc1c/0xf40 [ 382.945602][ T674] ? kernel_write+0x3c0/0x3c0 [ 382.950266][ T674] ? mutex_trylock+0xb0/0xb0 [ 382.954935][ T674] ? __fdget_pos+0x26d/0x310 [ 382.959507][ T674] ? ksys_write+0x77/0x2c0 [ 382.963914][ T674] ksys_write+0x198/0x2c0 [ 382.968228][ T674] ? __ia32_sys_read+0x90/0x90 [ 382.972973][ T674] ? debug_smp_processor_id+0x17/0x20 [ 382.978323][ T674] __x64_sys_write+0x7b/0x90 [ 382.982892][ T674] do_syscall_64+0x34/0x70 [ 382.987289][ T674] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 382.993160][ T674] RIP: 0033:0x7f5223098259 [ 382.997554][ T674] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 383.017135][ T674] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 383.025534][ T674] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 383.033489][ T674] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 383.041440][ T674] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 383.049390][ T674] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 383.057340][ T674] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 383.096988][ T693] FAULT_INJECTION: forcing a failure. [ 383.096988][ T693] name failslab, interval 1, probability 0, space 0, times 0 [ 383.109696][ T693] CPU: 0 PID: 693 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 383.121300][ T693] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 383.131335][ T693] Call Trace: [ 383.134605][ T693] dump_stack_lvl+0x1e2/0x24b [ 383.139269][ T693] ? panic+0x7d7/0x7d7 [ 383.143319][ T693] ? bfq_pos_tree_add_move+0x43e/0x43e [ 383.148768][ T693] ? find_next_bit+0xd6/0x120 [ 383.153424][ T693] ? cpumask_next+0x11/0x30 [ 383.158170][ T693] dump_stack+0x15/0x17 [ 383.162324][ T693] should_fail+0x3c0/0x510 [ 383.166722][ T693] ? percpu_ref_init+0xd0/0x330 [ 383.171553][ T693] __should_failslab+0x9f/0xe0 [ 383.176299][ T693] should_failslab+0x9/0x20 [ 383.180785][ T693] kmem_cache_alloc_trace+0x3a/0x330 [ 383.186056][ T693] percpu_ref_init+0xd0/0x330 [ 383.190720][ T693] ? cgroup_setup_root+0xea0/0xea0 [ 383.195819][ T693] cgroup_apply_control_enable+0x3a2/0x12f0 [ 383.201696][ T693] cgroup_apply_control+0x93/0x710 [ 383.206813][ T693] ? css_next_child+0x160/0x160 [ 383.211648][ T693] ? io_schedule+0x120/0x120 [ 383.216224][ T693] ? kernfs_fop_write_iter+0x15e/0x410 [ 383.221675][ T693] ? __kasan_check_write+0x14/0x20 [ 383.226774][ T693] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 383.232047][ T693] cgroup_subtree_control_write+0xd19/0x1310 [ 383.238015][ T693] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 383.243984][ T693] ? __kasan_check_write+0x14/0x20 [ 383.249089][ T693] ? _copy_from_iter+0x3fb/0xd60 [ 383.254029][ T693] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 383.260010][ T693] cgroup_file_write+0x28e/0x590 [ 383.264931][ T693] ? cgroup_seqfile_stop+0xc0/0xc0 [ 383.270026][ T693] ? mutex_lock+0xa6/0x110 [ 383.274425][ T693] ? mutex_trylock+0xb0/0xb0 [ 383.279021][ T693] ? __kasan_check_write+0x14/0x20 [ 383.284113][ T693] kernfs_fop_write_iter+0x2d0/0x410 [ 383.289380][ T693] ? cgroup_seqfile_stop+0xc0/0xc0 [ 383.294470][ T693] vfs_write+0xc1c/0xf40 [ 383.298695][ T693] ? kernel_write+0x3c0/0x3c0 [ 383.303361][ T693] ? mutex_trylock+0xb0/0xb0 [ 383.307961][ T693] ? __fdget_pos+0x26d/0x310 [ 383.312546][ T693] ? ksys_write+0x77/0x2c0 [ 383.316944][ T693] ksys_write+0x198/0x2c0 [ 383.321258][ T693] ? __ia32_sys_read+0x90/0x90 [ 383.326118][ T693] ? debug_smp_processor_id+0x17/0x20 [ 383.331469][ T693] __x64_sys_write+0x7b/0x90 [ 383.336043][ T693] do_syscall_64+0x34/0x70 [ 383.340441][ T693] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 383.346313][ T693] RIP: 0033:0x7f5223098259 [ 383.350711][ T693] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 383.370330][ T693] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 383.378725][ T693] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 383.386679][ T693] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 383.394633][ T693] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 383.402589][ T693] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 383.410543][ T693] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 383.467266][ T682] FAULT_INJECTION: forcing a failure. [ 383.467266][ T682] name failslab, interval 1, probability 0, space 0, times 0 [ 383.480082][ T682] CPU: 1 PID: 682 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 383.491703][ T682] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 383.501749][ T682] Call Trace: [ 383.505022][ T682] dump_stack_lvl+0x1e2/0x24b [ 383.509679][ T682] ? panic+0x7d7/0x7d7 [ 383.513781][ T682] ? bfq_pos_tree_add_move+0x43e/0x43e [ 383.519234][ T682] ? find_next_bit+0xd6/0x120 [ 383.523892][ T682] ? cpumask_next+0x11/0x30 [ 383.528379][ T682] dump_stack+0x15/0x17 [ 383.532522][ T682] should_fail+0x3c0/0x510 [ 383.536940][ T682] ? percpu_ref_init+0xd0/0x330 [ 383.541796][ T682] __should_failslab+0x9f/0xe0 [ 383.546542][ T682] should_failslab+0x9/0x20 [ 383.551029][ T682] kmem_cache_alloc_trace+0x3a/0x330 [ 383.556296][ T682] percpu_ref_init+0xd0/0x330 [ 383.560952][ T682] ? cgroup_setup_root+0xea0/0xea0 [ 383.566044][ T682] cgroup_apply_control_enable+0x3a2/0x12f0 [ 383.572094][ T682] cgroup_apply_control+0x93/0x710 [ 383.577190][ T682] ? css_next_child+0x160/0x160 [ 383.582028][ T682] ? stack_trace_save+0x12d/0x1f0 [ 383.587299][ T682] ? io_schedule+0x120/0x120 [ 383.591876][ T682] ? kernfs_fop_write_iter+0x15e/0x410 [ 383.597320][ T682] ? __kasan_check_write+0x14/0x20 [ 383.602419][ T682] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 383.607691][ T682] cgroup_subtree_control_write+0xd19/0x1310 [ 383.613660][ T682] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 383.619626][ T682] ? __kasan_check_write+0x14/0x20 [ 383.624722][ T682] ? _copy_from_iter+0x3fb/0xd60 [ 383.629647][ T682] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 383.635612][ T682] cgroup_file_write+0x28e/0x590 [ 383.640540][ T682] ? cgroup_seqfile_stop+0xc0/0xc0 [ 383.645637][ T682] ? mutex_lock+0xa6/0x110 [ 383.650037][ T682] ? mutex_trylock+0xb0/0xb0 [ 383.654630][ T682] ? __kasan_check_write+0x14/0x20 [ 383.659744][ T682] kernfs_fop_write_iter+0x2d0/0x410 [ 383.665022][ T682] ? cgroup_seqfile_stop+0xc0/0xc0 [ 383.670113][ T682] vfs_write+0xc1c/0xf40 [ 383.674352][ T682] ? slab_free_freelist_hook+0xcc/0x1a0 [ 383.679889][ T682] ? kernel_write+0x3c0/0x3c0 [ 383.684547][ T682] ? mutex_trylock+0xb0/0xb0 [ 383.689119][ T682] ? __fdget_pos+0x26d/0x310 [ 383.693697][ T682] ? ksys_write+0x77/0x2c0 [ 383.698099][ T682] ksys_write+0x198/0x2c0 [ 383.702410][ T682] ? __ia32_sys_read+0x90/0x90 [ 383.707167][ T682] ? debug_smp_processor_id+0x17/0x20 [ 383.712626][ T682] __x64_sys_write+0x7b/0x90 [ 383.717216][ T682] do_syscall_64+0x34/0x70 [ 383.721633][ T682] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 383.727514][ T682] RIP: 0033:0x7f5223098259 [ 383.731917][ T682] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 383.751508][ T682] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 383.760081][ T682] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 executing program write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 383.768038][ T682] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 383.775994][ T682] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 383.783957][ T682] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 383.791922][ T682] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 383.847377][ T675] FAULT_INJECTION: forcing a failure. [ 383.847377][ T675] name failslab, interval 1, probability 0, space 0, times 0 [ 383.860084][ T675] CPU: 1 PID: 675 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 383.871708][ T675] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 383.881743][ T675] Call Trace: [ 383.885025][ T675] dump_stack_lvl+0x1e2/0x24b [ 383.889679][ T675] ? bfq_pos_tree_add_move+0x43e/0x43e [ 383.895115][ T675] dump_stack+0x15/0x17 [ 383.899263][ T675] should_fail+0x3c0/0x510 [ 383.903658][ T675] ? pids_css_alloc+0x4e/0x120 [ 383.908402][ T675] __should_failslab+0x9f/0xe0 [ 383.913140][ T675] should_failslab+0x9/0x20 [ 383.917635][ T675] kmem_cache_alloc_trace+0x3a/0x330 [ 383.922898][ T675] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 383.928097][ T675] pids_css_alloc+0x4e/0x120 [ 383.932762][ T675] cgroup_apply_control_enable+0x350/0x12f0 [ 383.938647][ T675] cgroup_apply_control+0x93/0x710 [ 383.943739][ T675] ? css_next_child+0x160/0x160 [ 383.948566][ T675] ? release_task_stack+0x56a/0x660 [ 383.953743][ T675] ? io_schedule+0x120/0x120 [ 383.958313][ T675] ? kernfs_fop_write_iter+0x15e/0x410 [ 383.963757][ T675] ? __kasan_check_write+0x14/0x20 [ 383.968847][ T675] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 383.974108][ T675] cgroup_subtree_control_write+0xd19/0x1310 [ 383.980096][ T675] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 383.986076][ T675] ? __kasan_check_write+0x14/0x20 [ 383.991305][ T675] ? _copy_from_iter+0x3fb/0xd60 [ 383.996224][ T675] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 384.002183][ T675] cgroup_file_write+0x28e/0x590 [ 384.007101][ T675] ? cgroup_seqfile_stop+0xc0/0xc0 [ 384.012188][ T675] ? mutex_lock+0xa6/0x110 [ 384.016582][ T675] ? mutex_trylock+0xb0/0xb0 [ 384.021153][ T675] ? __kasan_check_write+0x14/0x20 [ 384.026245][ T675] kernfs_fop_write_iter+0x2d0/0x410 [ 384.031510][ T675] ? cgroup_seqfile_stop+0xc0/0xc0 [ 384.036613][ T675] vfs_write+0xc1c/0xf40 [ 384.040840][ T675] ? kernel_write+0x3c0/0x3c0 [ 384.045496][ T675] ? mutex_trylock+0xb0/0xb0 [ 384.050067][ T675] ? __fdget_pos+0x26d/0x310 [ 384.054637][ T675] ? ksys_write+0x77/0x2c0 [ 384.059033][ T675] ksys_write+0x198/0x2c0 [ 384.063339][ T675] ? __ia32_sys_read+0x90/0x90 [ 384.068088][ T675] ? debug_smp_processor_id+0x17/0x20 [ 384.073437][ T675] __x64_sys_write+0x7b/0x90 [ 384.078006][ T675] do_syscall_64+0x34/0x70 [ 384.082409][ T675] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 384.088275][ T675] RIP: 0033:0x7f5223098259 [ 384.092668][ T675] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 384.112252][ T675] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 384.120744][ T675] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 384.128698][ T675] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 384.136659][ T675] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 executing program [ 384.144611][ T675] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 384.152564][ T675] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 384.207136][ T691] FAULT_INJECTION: forcing a failure. [ 384.207136][ T691] name failslab, interval 1, probability 0, space 0, times 0 [ 384.219842][ T691] CPU: 0 PID: 691 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 384.231587][ T691] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 384.241740][ T691] Call Trace: [ 384.245130][ T691] dump_stack_lvl+0x1e2/0x24b [ 384.249875][ T691] ? panic+0x7d7/0x7d7 [ 384.253925][ T691] ? bfq_pos_tree_add_move+0x43e/0x43e [ 384.259365][ T691] ? find_next_bit+0xd6/0x120 [ 384.264020][ T691] ? cpumask_next+0x11/0x30 [ 384.268501][ T691] dump_stack+0x15/0x17 [ 384.272638][ T691] should_fail+0x3c0/0x510 [ 384.277053][ T691] ? percpu_ref_init+0xd0/0x330 [ 384.281894][ T691] __should_failslab+0x9f/0xe0 [ 384.286927][ T691] should_failslab+0x9/0x20 [ 384.291532][ T691] kmem_cache_alloc_trace+0x3a/0x330 [ 384.296842][ T691] percpu_ref_init+0xd0/0x330 [ 384.301501][ T691] ? cgroup_setup_root+0xea0/0xea0 [ 384.306604][ T691] cgroup_apply_control_enable+0x3a2/0x12f0 [ 384.312484][ T691] cgroup_apply_control+0x93/0x710 [ 384.317582][ T691] ? css_next_child+0x160/0x160 [ 384.322437][ T691] ? stack_trace_save+0x12d/0x1f0 [ 384.327547][ T691] ? io_schedule+0x120/0x120 [ 384.332147][ T691] ? kernfs_fop_write_iter+0x15e/0x410 [ 384.337589][ T691] ? __kasan_check_write+0x14/0x20 [ 384.342729][ T691] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 384.348002][ T691] cgroup_subtree_control_write+0xd19/0x1310 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 384.353965][ T691] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 384.359930][ T691] ? __kasan_check_write+0x14/0x20 [ 384.365022][ T691] ? _copy_from_iter+0x3fb/0xd60 [ 384.369943][ T691] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 384.375904][ T691] cgroup_file_write+0x28e/0x590 [ 384.380842][ T691] ? cgroup_seqfile_stop+0xc0/0xc0 [ 384.385934][ T691] ? mutex_lock+0xa6/0x110 [ 384.390328][ T691] ? mutex_trylock+0xb0/0xb0 [ 384.394894][ T691] ? __kasan_check_write+0x14/0x20 [ 384.399983][ T691] kernfs_fop_write_iter+0x2d0/0x410 [ 384.405247][ T691] ? cgroup_seqfile_stop+0xc0/0xc0 [ 384.410360][ T691] vfs_write+0xc1c/0xf40 [ 384.414582][ T691] ? slab_free_freelist_hook+0xcc/0x1a0 [ 384.420110][ T691] ? kernel_write+0x3c0/0x3c0 [ 384.424765][ T691] ? mutex_trylock+0xb0/0xb0 [ 384.429336][ T691] ? __fdget_pos+0x26d/0x310 [ 384.433906][ T691] ? ksys_write+0x77/0x2c0 [ 384.438437][ T691] ksys_write+0x198/0x2c0 [ 384.442774][ T691] ? __ia32_sys_read+0x90/0x90 [ 384.447523][ T691] ? debug_smp_processor_id+0x17/0x20 [ 384.452893][ T691] __x64_sys_write+0x7b/0x90 [ 384.457483][ T691] do_syscall_64+0x34/0x70 [ 384.461879][ T691] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 384.467747][ T691] RIP: 0033:0x7f5223098259 [ 384.472157][ T691] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 384.491742][ T691] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 384.500142][ T691] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program [ 384.508095][ T691] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 384.516052][ T691] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 384.524005][ T691] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 384.531966][ T691] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 384.587150][ T699] FAULT_INJECTION: forcing a failure. [ 384.587150][ T699] name failslab, interval 1, probability 0, space 0, times 0 [ 384.599914][ T699] CPU: 1 PID: 699 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 384.611534][ T699] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 384.621669][ T699] Call Trace: [ 384.624950][ T699] dump_stack_lvl+0x1e2/0x24b [ 384.629609][ T699] ? bfq_pos_tree_add_move+0x43e/0x43e [ 384.635070][ T699] ? selinux_kernfs_init_security+0x1a8/0x760 [ 384.641125][ T699] dump_stack+0x15/0x17 [ 384.645262][ T699] should_fail+0x3c0/0x510 [ 384.649662][ T699] ? __kernfs_new_node+0x99/0x6e0 [ 384.654675][ T699] __should_failslab+0x9f/0xe0 [ 384.659420][ T699] should_failslab+0x9/0x20 [ 384.663905][ T699] __kmalloc_track_caller+0x5f/0x350 [ 384.669173][ T699] kstrdup_const+0x55/0x90 [ 384.673570][ T699] __kernfs_new_node+0x99/0x6e0 [ 384.678431][ T699] ? is_module_text_address+0xe1/0x140 [ 384.683866][ T699] ? kernfs_new_node+0x170/0x170 [ 384.688804][ T699] ? ptr_to_hashval+0x60/0x60 [ 384.693459][ T699] ? arch_stack_walk+0xf8/0x140 [ 384.698294][ T699] ? snprintf+0xd6/0x120 [ 384.702544][ T699] kernfs_new_node+0x97/0x170 [ 384.707204][ T699] __kernfs_create_file+0x4a/0x270 [ 384.712295][ T699] cgroup_addrm_files+0xab8/0xfe0 [ 384.717322][ T699] ? ____kasan_kmalloc+0xdc/0x110 [ 384.722331][ T699] ? __kasan_kmalloc+0x9/0x10 [ 384.727020][ T699] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 384.732554][ T699] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 384.738688][ T699] ? delete_node+0x759/0x7b0 [ 384.743289][ T699] ? __kasan_check_read+0x11/0x20 [ 384.748380][ T699] ? delete_node+0x759/0x7b0 [ 384.752968][ T699] ? __kasan_check_write+0x14/0x20 [ 384.758065][ T699] ? idr_replace+0x1c4/0x230 [ 384.762640][ T699] ? idr_get_next+0x4b0/0x4b0 [ 384.767295][ T699] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 384.772383][ T699] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 384.777566][ T699] css_populate_dir+0x137/0x370 [ 384.782397][ T699] cgroup_apply_control_enable+0x8b9/0x12f0 [ 384.788280][ T699] cgroup_apply_control+0x93/0x710 [ 384.793376][ T699] ? css_next_child+0x160/0x160 [ 384.800289][ T699] ? io_schedule+0x120/0x120 [ 384.804863][ T699] ? kernfs_fop_write_iter+0x15e/0x410 [ 384.810307][ T699] ? __kasan_check_write+0x14/0x20 [ 384.815415][ T699] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 384.820685][ T699] cgroup_subtree_control_write+0xd19/0x1310 [ 384.826664][ T699] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 384.832639][ T699] ? __kasan_check_write+0x14/0x20 [ 384.837730][ T699] ? _copy_from_iter+0x3fb/0xd60 [ 384.842651][ T699] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 384.848616][ T699] cgroup_file_write+0x28e/0x590 [ 384.853546][ T699] ? cgroup_seqfile_stop+0xc0/0xc0 [ 384.858641][ T699] ? mutex_lock+0xa6/0x110 [ 384.863034][ T699] ? mutex_trylock+0xb0/0xb0 [ 384.867608][ T699] ? __kasan_check_write+0x14/0x20 [ 384.872702][ T699] kernfs_fop_write_iter+0x2d0/0x410 [ 384.877968][ T699] ? cgroup_seqfile_stop+0xc0/0xc0 [ 384.883070][ T699] vfs_write+0xc1c/0xf40 [ 384.887296][ T699] ? kernel_write+0x3c0/0x3c0 [ 384.891951][ T699] ? mutex_trylock+0xb0/0xb0 [ 384.896520][ T699] ? __fdget_pos+0x26d/0x310 [ 384.901090][ T699] ? ksys_write+0x77/0x2c0 [ 384.905488][ T699] ksys_write+0x198/0x2c0 [ 384.909797][ T699] ? __ia32_sys_read+0x90/0x90 [ 384.914540][ T699] ? debug_smp_processor_id+0x17/0x20 [ 384.919889][ T699] __x64_sys_write+0x7b/0x90 [ 384.924457][ T699] do_syscall_64+0x34/0x70 [ 384.928852][ T699] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 384.934730][ T699] RIP: 0033:0x7f5223098259 [ 384.939125][ T699] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 384.958712][ T699] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 384.967116][ T699] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 384.975087][ T699] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 384.983037][ T699] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 384.990990][ T699] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 384.998942][ T699] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 385.007073][ T699] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 385.015897][ T373] ------------[ cut here ]------------ [ 385.021425][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 385.030400][ T373] Modules linked in: [ 385.034287][ T373] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 385.045940][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 385.056067][ T373] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 385.061735][ T373] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 385.081504][ T373] RSP: 0018:ffffc90000b67ca0 EFLAGS: 00010293 [ 385.087592][ T373] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a62c0 [ 385.095560][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 385.103541][ T373] RBP: ffffc90000b67d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 385.111555][ T373] R10: fffff5200016cf85 R11: 1ffff9200016cf84 R12: dffffc0000000000 [ 385.119536][ T373] R13: ffff8881100d68c0 R14: ffffc90000b67d00 R15: 1ffff9200016cf9c [ 385.127533][ T373] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 385.136448][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 385.143244][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506a0 [ 385.151234][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 385.159221][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 385.167208][ T373] Call Trace: [ 385.170514][ T373] ? lockref_get_or_lock+0x340/0x340 [ 385.175795][ T373] ? umount_tree+0xf50/0xf50 [ 385.180510][ T373] ? vfs_submount+0xb0/0xb0 [ 385.185007][ T373] ? dput+0x2b6/0x320 [ 385.189007][ T373] path_umount+0x1fe/0xfb0 [ 385.193432][ T373] ? namespace_unlock+0x4f0/0x4f0 [ 385.198476][ T373] ? user_path_at_empty+0x40/0x50 [ 385.203515][ T373] __x64_sys_umount+0x122/0x170 [ 385.208376][ T373] ? path_umount+0xfb0/0xfb0 [ 385.212964][ T373] ? debug_smp_processor_id+0x17/0x20 [ 385.218347][ T373] do_syscall_64+0x34/0x70 [ 385.222765][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 385.228671][ T373] RIP: 0033:0x7f5223099667 [ 385.233085][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 385.252708][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 385.261170][ T373] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 385.269153][ T373] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 385.277151][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 executing program [ 385.285107][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 385.293115][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 385.301102][ T373] ---[ end trace 049b48617963930c ]--- [ 385.327269][ T709] FAULT_INJECTION: forcing a failure. [ 385.327269][ T709] name failslab, interval 1, probability 0, space 0, times 0 [ 385.340022][ T709] CPU: 1 PID: 709 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 385.351638][ T709] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 385.361676][ T709] Call Trace: [ 385.364965][ T709] dump_stack_lvl+0x1e2/0x24b [ 385.369630][ T709] ? panic+0x7d7/0x7d7 [ 385.373674][ T709] ? bfq_pos_tree_add_move+0x43e/0x43e [ 385.379115][ T709] ? find_next_bit+0xd6/0x120 [ 385.383775][ T709] ? cpumask_next+0x11/0x30 [ 385.388254][ T709] dump_stack+0x15/0x17 [ 385.392388][ T709] should_fail+0x3c0/0x510 [ 385.396781][ T709] ? percpu_ref_init+0xd0/0x330 [ 385.401612][ T709] __should_failslab+0x9f/0xe0 [ 385.406352][ T709] should_failslab+0x9/0x20 [ 385.410844][ T709] kmem_cache_alloc_trace+0x3a/0x330 [ 385.416137][ T709] percpu_ref_init+0xd0/0x330 [ 385.420791][ T709] ? cgroup_setup_root+0xea0/0xea0 [ 385.425886][ T709] cgroup_apply_control_enable+0x3a2/0x12f0 [ 385.431774][ T709] cgroup_apply_control+0x93/0x710 [ 385.436863][ T709] ? css_next_child+0x160/0x160 [ 385.441692][ T709] ? stack_trace_save+0x12d/0x1f0 [ 385.446694][ T709] ? io_schedule+0x120/0x120 [ 385.451261][ T709] ? kernfs_fop_write_iter+0x15e/0x410 [ 385.456699][ T709] ? __kasan_check_write+0x14/0x20 [ 385.461790][ T709] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 385.467054][ T709] cgroup_subtree_control_write+0xd19/0x1310 [ 385.473015][ T709] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 385.478995][ T709] ? __kasan_check_write+0x14/0x20 [ 385.484086][ T709] ? _copy_from_iter+0x3fb/0xd60 [ 385.489009][ T709] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 385.494965][ T709] cgroup_file_write+0x28e/0x590 [ 385.499898][ T709] ? cgroup_seqfile_stop+0xc0/0xc0 [ 385.504997][ T709] ? mutex_lock+0xa6/0x110 [ 385.509400][ T709] ? mutex_trylock+0xb0/0xb0 [ 385.513975][ T709] ? __kasan_check_write+0x14/0x20 [ 385.519075][ T709] kernfs_fop_write_iter+0x2d0/0x410 [ 385.524341][ T709] ? cgroup_seqfile_stop+0xc0/0xc0 [ 385.529450][ T709] vfs_write+0xc1c/0xf40 [ 385.533672][ T709] ? slab_free_freelist_hook+0xcc/0x1a0 [ 385.539196][ T709] ? kernel_write+0x3c0/0x3c0 [ 385.543855][ T709] ? mutex_trylock+0xb0/0xb0 [ 385.548422][ T709] ? __fdget_pos+0x26d/0x310 [ 385.552989][ T709] ? ksys_write+0x77/0x2c0 [ 385.557381][ T709] ksys_write+0x198/0x2c0 [ 385.561687][ T709] ? __ia32_sys_read+0x90/0x90 [ 385.566428][ T709] ? debug_smp_processor_id+0x17/0x20 [ 385.571782][ T709] __x64_sys_write+0x7b/0x90 [ 385.576360][ T709] do_syscall_64+0x34/0x70 [ 385.580757][ T709] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 385.586624][ T709] RIP: 0033:0x7f5223098259 [ 385.591034][ T709] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 385.610627][ T709] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 385.619026][ T709] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 385.626981][ T709] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 executing program [ 385.634938][ T709] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 385.642894][ T709] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 385.650848][ T709] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 385.677042][ T696] FAULT_INJECTION: forcing a failure. [ 385.677042][ T696] name failslab, interval 1, probability 0, space 0, times 0 [ 385.689747][ T696] CPU: 1 PID: 696 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 385.701370][ T696] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 385.711495][ T696] Call Trace: [ 385.714776][ T696] dump_stack_lvl+0x1e2/0x24b [ 385.719442][ T696] ? panic+0x7d7/0x7d7 [ 385.723493][ T696] ? bfq_pos_tree_add_move+0x43e/0x43e [ 385.728930][ T696] ? selinux_kernfs_init_security+0x1a8/0x760 [ 385.735013][ T696] dump_stack+0x15/0x17 [ 385.739148][ T696] should_fail+0x3c0/0x510 [ 385.743551][ T696] __should_failslab+0x9f/0xe0 [ 385.748292][ T696] should_failslab+0x9/0x20 [ 385.752786][ T696] kmem_cache_alloc+0x3f/0x300 [ 385.757563][ T696] ? __kernfs_new_node+0xdb/0x6e0 [ 385.762586][ T696] __kernfs_new_node+0xdb/0x6e0 [ 385.767423][ T696] ? is_module_text_address+0xe1/0x140 [ 385.772862][ T696] ? kernfs_new_node+0x170/0x170 [ 385.777778][ T696] ? ptr_to_hashval+0x60/0x60 [ 385.782450][ T696] ? snprintf+0xd6/0x120 [ 385.786672][ T696] ? __kasan_check_write+0x14/0x20 [ 385.791764][ T696] ? mutex_unlock+0x1d/0x40 [ 385.796246][ T696] kernfs_new_node+0x97/0x170 [ 385.800909][ T696] __kernfs_create_file+0x4a/0x270 [ 385.806000][ T696] cgroup_addrm_files+0xab8/0xfe0 [ 385.811002][ T696] ? ____kasan_kmalloc+0xdc/0x110 [ 385.816175][ T696] ? __kasan_kmalloc+0x9/0x10 [ 385.820847][ T696] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 385.826373][ T696] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 385.832504][ T696] ? delete_node+0x759/0x7b0 [ 385.837079][ T696] ? __kasan_check_read+0x11/0x20 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 385.842082][ T696] ? idr_replace+0x1c4/0x230 [ 385.846649][ T696] ? idr_get_next+0x4b0/0x4b0 [ 385.851300][ T696] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 385.856299][ T696] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 385.861507][ T696] css_populate_dir+0x137/0x370 [ 385.866348][ T696] cgroup_apply_control_enable+0x8b9/0x12f0 [ 385.872228][ T696] cgroup_apply_control+0x93/0x710 [ 385.877322][ T696] ? css_next_child+0x160/0x160 [ 385.882157][ T696] ? io_schedule+0x120/0x120 [ 385.886730][ T696] ? kernfs_fop_write_iter+0x15e/0x410 [ 385.892174][ T696] ? __kasan_check_write+0x14/0x20 [ 385.897295][ T696] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 385.902560][ T696] cgroup_subtree_control_write+0xd19/0x1310 [ 385.908515][ T696] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 385.914480][ T696] ? __kasan_check_write+0x14/0x20 [ 385.919576][ T696] ? _copy_from_iter+0x3fb/0xd60 [ 385.924492][ T696] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 385.930450][ T696] cgroup_file_write+0x28e/0x590 [ 385.935368][ T696] ? cgroup_seqfile_stop+0xc0/0xc0 [ 385.940460][ T696] ? mutex_lock+0xa6/0x110 [ 385.944852][ T696] ? mutex_trylock+0xb0/0xb0 [ 385.949424][ T696] ? __kasan_check_write+0x14/0x20 [ 385.954514][ T696] kernfs_fop_write_iter+0x2d0/0x410 [ 385.959779][ T696] ? cgroup_seqfile_stop+0xc0/0xc0 [ 385.964869][ T696] vfs_write+0xc1c/0xf40 [ 385.969092][ T696] ? kernel_write+0x3c0/0x3c0 [ 385.973753][ T696] ? mutex_trylock+0xb0/0xb0 [ 385.978322][ T696] ? __fdget_pos+0x26d/0x310 [ 385.982890][ T696] ? ksys_write+0x77/0x2c0 [ 385.987282][ T696] ksys_write+0x198/0x2c0 [ 385.991588][ T696] ? __ia32_sys_read+0x90/0x90 [ 385.996329][ T696] ? debug_smp_processor_id+0x17/0x20 [ 386.001680][ T696] __x64_sys_write+0x7b/0x90 [ 386.006248][ T696] do_syscall_64+0x34/0x70 [ 386.010645][ T696] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 386.016512][ T696] RIP: 0033:0x7f5223098259 [ 386.020901][ T696] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 386.040483][ T696] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 386.048874][ T696] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 386.056825][ T696] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 386.064777][ T696] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 386.072744][ T696] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 386.080700][ T696] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 executing program [ 386.089626][ T696] cgroup: cgroup_addrm_files: failed to add events, err=-12 [ 386.147224][ T717] FAULT_INJECTION: forcing a failure. [ 386.147224][ T717] name failslab, interval 1, probability 0, space 0, times 0 [ 386.159897][ T717] CPU: 0 PID: 717 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 386.171634][ T717] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 386.181686][ T717] Call Trace: [ 386.184957][ T717] dump_stack_lvl+0x1e2/0x24b [ 386.189613][ T717] ? panic+0x7d7/0x7d7 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 386.193660][ T717] ? bfq_pos_tree_add_move+0x43e/0x43e [ 386.199094][ T717] ? find_next_bit+0xd6/0x120 [ 386.203769][ T717] ? cpumask_next+0x11/0x30 [ 386.208256][ T717] dump_stack+0x15/0x17 [ 386.212396][ T717] should_fail+0x3c0/0x510 [ 386.216797][ T717] ? percpu_ref_init+0xd0/0x330 [ 386.221624][ T717] __should_failslab+0x9f/0xe0 [ 386.226364][ T717] should_failslab+0x9/0x20 [ 386.230861][ T717] kmem_cache_alloc_trace+0x3a/0x330 [ 386.236126][ T717] percpu_ref_init+0xd0/0x330 [ 386.240784][ T717] ? cgroup_setup_root+0xea0/0xea0 [ 386.245874][ T717] cgroup_apply_control_enable+0x3a2/0x12f0 [ 386.251754][ T717] cgroup_apply_control+0x93/0x710 [ 386.256846][ T717] ? css_next_child+0x160/0x160 [ 386.261671][ T717] ? stack_trace_save+0x12d/0x1f0 [ 386.266705][ T717] ? io_schedule+0x120/0x120 [ 386.271281][ T717] ? kernfs_fop_write_iter+0x15e/0x410 [ 386.276740][ T717] ? __kasan_check_write+0x14/0x20 [ 386.281831][ T717] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 386.287095][ T717] cgroup_subtree_control_write+0xd19/0x1310 [ 386.293054][ T717] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 386.299012][ T717] ? __kasan_check_write+0x14/0x20 [ 386.304100][ T717] ? _copy_from_iter+0x3fb/0xd60 [ 386.309015][ T717] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 386.314969][ T717] cgroup_file_write+0x28e/0x590 [ 386.319905][ T717] ? cgroup_seqfile_stop+0xc0/0xc0 [ 386.324996][ T717] ? mutex_lock+0xa6/0x110 [ 386.329388][ T717] ? mutex_trylock+0xb0/0xb0 [ 386.333965][ T717] ? __kasan_check_write+0x14/0x20 [ 386.339057][ T717] kernfs_fop_write_iter+0x2d0/0x410 [ 386.344327][ T717] ? cgroup_seqfile_stop+0xc0/0xc0 [ 386.349413][ T717] vfs_write+0xc1c/0xf40 [ 386.353638][ T717] ? slab_free_freelist_hook+0xcc/0x1a0 [ 386.359173][ T717] ? kernel_write+0x3c0/0x3c0 [ 386.363827][ T717] ? mutex_trylock+0xb0/0xb0 [ 386.368393][ T717] ? __fdget_pos+0x26d/0x310 [ 386.372958][ T717] ? ksys_write+0x77/0x2c0 [ 386.377370][ T717] ksys_write+0x198/0x2c0 [ 386.381692][ T717] ? __ia32_sys_read+0x90/0x90 [ 386.386438][ T717] ? debug_smp_processor_id+0x17/0x20 [ 386.391791][ T717] __x64_sys_write+0x7b/0x90 [ 386.396359][ T717] do_syscall_64+0x34/0x70 [ 386.400756][ T717] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 386.406634][ T717] RIP: 0033:0x7f5223098259 [ 386.411029][ T717] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 386.430614][ T717] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 386.439019][ T717] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 386.447056][ T717] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 386.455006][ T717] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 386.462960][ T717] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 386.470918][ T717] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 386.481538][ T372] ------------[ cut here ]------------ [ 386.487070][ T372] WARNING: CPU: 1 PID: 372 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 386.495988][ T372] Modules linked in: [ 386.499918][ T372] CPU: 1 PID: 372 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 386.511545][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 386.521635][ T372] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 386.527268][ T372] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 386.546888][ T372] RSP: 0018:ffffc90000b57ba0 EFLAGS: 00010293 [ 386.552942][ T372] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff8881073a0000 [ 386.560915][ T372] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 386.568882][ T372] RBP: ffffc90000b57c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 386.576847][ T372] R10: fffff5200016af65 R11: 1ffff9200016af64 R12: dffffc0000000000 [ 386.584800][ T372] R13: ffff8881100d7dc0 R14: ffffc90000b57c00 R15: 1ffff9200016af7c [ 386.592773][ T372] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 386.601733][ T372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 386.608342][ T372] CR2: 000055555703b738 CR3: 0000000119876000 CR4: 00000000003506a0 [ 386.616298][ T372] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 386.624267][ T372] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 386.632230][ T372] Call Trace: [ 386.635503][ T372] ? io_schedule+0x120/0x120 [ 386.640086][ T372] ? vfs_submount+0xb0/0xb0 [ 386.644572][ T372] ? shrink_dentry_list+0x4ec/0x500 [ 386.649773][ T372] ? __kasan_check_write+0x14/0x20 [ 386.654867][ T372] namespace_unlock+0x448/0x4f0 [ 386.659718][ T372] ? umount_tree+0xf50/0xf50 [ 386.664289][ T372] ? __detach_mounts+0x670/0x670 [ 386.669245][ T372] ? selinux_umount+0xf0/0x130 [ 386.673993][ T372] ? security_sb_umount+0x9d/0xb0 [ 386.679013][ T372] path_umount+0xf03/0xfb0 [ 386.683588][ T372] ? namespace_unlock+0x4f0/0x4f0 [ 386.688608][ T372] ? user_path_at_empty+0x40/0x50 [ 386.693614][ T372] __x64_sys_umount+0x122/0x170 [ 386.698471][ T372] ? path_umount+0xfb0/0xfb0 [ 386.703047][ T372] ? debug_smp_processor_id+0x17/0x20 [ 386.708416][ T372] do_syscall_64+0x34/0x70 [ 386.712821][ T372] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 386.718710][ T372] RIP: 0033:0x7f5223099667 [ 386.723108][ T372] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 386.742728][ T372] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 386.751144][ T372] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 386.759118][ T372] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 386.767085][ T372] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 386.775040][ T372] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 386.783010][ T372] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 386.791009][ T372] ---[ end trace 049b48617963930d ]--- [ 386.796516][ T372] ------------[ cut here ]------------ [ 386.802010][ T372] WARNING: CPU: 1 PID: 372 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 386.811003][ T372] Modules linked in: [ 386.814888][ T372] CPU: 1 PID: 372 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 386.826552][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 386.836683][ T372] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 386.842303][ T372] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 386.862074][ T372] RSP: 0018:ffffc90000b57ca0 EFLAGS: 00010293 [ 386.868141][ T372] RAX: ffffffff81b68cba RBX: 00000000fffffffd RCX: ffff8881073a0000 [ 386.876094][ T372] RDX: 0000000000000000 RSI: 00000000fffffffd RDI: 0000000000000000 [ 386.884080][ T372] RBP: ffffc90000b57d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 386.892063][ T372] R10: fffff5200016af85 R11: 1ffff9200016af84 R12: dffffc0000000000 [ 386.900049][ T372] R13: ffff8881100d7dc0 R14: ffffc90000b57d00 R15: 1ffff9200016af9c [ 386.908058][ T372] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 386.917154][ T372] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 386.923731][ T372] CR2: 000055555703b738 CR3: 0000000119876000 CR4: 00000000003506a0 [ 386.931706][ T372] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 386.939677][ T372] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 386.947649][ T372] Call Trace: [ 386.950930][ T372] ? lockref_get_or_lock+0x340/0x340 [ 386.956201][ T372] ? umount_tree+0xf50/0xf50 [ 386.960806][ T372] ? vfs_submount+0xb0/0xb0 [ 386.965380][ T372] ? dput+0x2b6/0x320 [ 386.969361][ T372] path_umount+0x1fe/0xfb0 [ 386.973763][ T372] ? namespace_unlock+0x4f0/0x4f0 [ 386.978801][ T372] ? user_path_at_empty+0x40/0x50 [ 386.983812][ T372] __x64_sys_umount+0x122/0x170 [ 386.988663][ T372] ? path_umount+0xfb0/0xfb0 [ 386.993236][ T372] ? debug_smp_processor_id+0x17/0x20 [ 386.998606][ T372] do_syscall_64+0x34/0x70 [ 387.003003][ T372] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 387.008888][ T372] RIP: 0033:0x7f5223099667 [ 387.013294][ T372] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 387.032897][ T372] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 387.041324][ T372] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 387.049298][ T372] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 387.057265][ T372] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 387.065222][ T372] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 387.073191][ T372] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 387.081164][ T372] ---[ end trace 049b48617963930e ]--- [ 387.087089][ T712] FAULT_INJECTION: forcing a failure. [ 387.087089][ T712] name failslab, interval 1, probability 0, space 0, times 0 [ 387.103877][ T712] CPU: 1 PID: 712 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 387.115513][ T712] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 387.125643][ T712] Call Trace: [ 387.128916][ T712] dump_stack_lvl+0x1e2/0x24b [ 387.133576][ T712] ? panic+0x7d7/0x7d7 [ 387.137630][ T712] ? bfq_pos_tree_add_move+0x43e/0x43e [ 387.143247][ T712] ? find_next_bit+0xd6/0x120 [ 387.147909][ T712] ? cpumask_next+0x11/0x30 [ 387.152409][ T712] dump_stack+0x15/0x17 [ 387.156557][ T712] should_fail+0x3c0/0x510 [ 387.160956][ T712] ? percpu_ref_init+0xd0/0x330 [ 387.165791][ T712] __should_failslab+0x9f/0xe0 [ 387.170543][ T712] should_failslab+0x9/0x20 [ 387.175031][ T712] kmem_cache_alloc_trace+0x3a/0x330 [ 387.180298][ T712] percpu_ref_init+0xd0/0x330 [ 387.184958][ T712] ? cgroup_setup_root+0xea0/0xea0 [ 387.190049][ T712] cgroup_apply_control_enable+0x3a2/0x12f0 [ 387.195927][ T712] cgroup_apply_control+0x93/0x710 [ 387.201026][ T712] ? css_next_child+0x160/0x160 [ 387.205866][ T712] ? release_task_stack+0x4c2/0x660 [ 387.211049][ T712] ? io_schedule+0x120/0x120 [ 387.215624][ T712] ? kernfs_fop_write_iter+0x15e/0x410 [ 387.221063][ T712] ? __kasan_check_write+0x14/0x20 [ 387.226162][ T712] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 387.231434][ T712] cgroup_subtree_control_write+0xd19/0x1310 [ 387.237401][ T712] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 387.243381][ T712] ? __kasan_check_write+0x14/0x20 [ 387.248484][ T712] ? _copy_from_iter+0x3fb/0xd60 [ 387.253414][ T712] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 387.259374][ T712] cgroup_file_write+0x28e/0x590 [ 387.264303][ T712] ? cgroup_seqfile_stop+0xc0/0xc0 [ 387.269400][ T712] ? mutex_lock+0xa6/0x110 [ 387.273811][ T712] ? mutex_trylock+0xb0/0xb0 [ 387.278391][ T712] ? __kasan_check_write+0x14/0x20 [ 387.283485][ T712] kernfs_fop_write_iter+0x2d0/0x410 [ 387.288752][ T712] ? cgroup_seqfile_stop+0xc0/0xc0 [ 387.293848][ T712] vfs_write+0xc1c/0xf40 [ 387.298072][ T712] ? kernel_write+0x3c0/0x3c0 [ 387.302731][ T712] ? mutex_trylock+0xb0/0xb0 [ 387.307309][ T712] ? __fdget_pos+0x26d/0x310 [ 387.311882][ T712] ? ksys_write+0x77/0x2c0 [ 387.316280][ T712] ksys_write+0x198/0x2c0 [ 387.320592][ T712] ? __ia32_sys_read+0x90/0x90 [ 387.325348][ T712] ? debug_smp_processor_id+0x17/0x20 [ 387.330708][ T712] __x64_sys_write+0x7b/0x90 [ 387.335373][ T712] do_syscall_64+0x34/0x70 [ 387.339773][ T712] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 387.345667][ T712] RIP: 0033:0x7f5223098259 [ 387.350068][ T712] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 387.369661][ T712] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 387.378059][ T712] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 387.386017][ T712] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 387.393976][ T712] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 executing program [ 387.401934][ T712] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 387.409891][ T712] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 387.421496][ T373] ------------[ cut here ]------------ [ 387.427003][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 387.435932][ T373] Modules linked in: [ 387.439890][ T373] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 387.451534][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 387.461608][ T373] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 387.467347][ T373] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 387.486971][ T373] RSP: 0018:ffffc90000b67ba0 EFLAGS: 00010293 [ 387.493027][ T373] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a62c0 [ 387.500999][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 387.508984][ T373] RBP: ffffc90000b67c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 387.516963][ T373] R10: fffff5200016cf65 R11: 1ffff9200016cf64 R12: dffffc0000000000 [ 387.524926][ T373] R13: ffff88810e0e0000 R14: ffffc90000b67c00 R15: 1ffff9200016cf7c [ 387.532900][ T373] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 387.541925][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 387.548505][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506a0 [ 387.556459][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 387.564437][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 387.572436][ T373] Call Trace: [ 387.575715][ T373] ? io_schedule+0x120/0x120 [ 387.580302][ T373] ? vfs_submount+0xb0/0xb0 [ 387.584790][ T373] ? shrink_dentry_list+0x4ec/0x500 [ 387.589982][ T373] ? __kasan_check_write+0x14/0x20 [ 387.595074][ T373] namespace_unlock+0x448/0x4f0 [ 387.599929][ T373] ? umount_tree+0xf50/0xf50 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 387.604499][ T373] ? __detach_mounts+0x670/0x670 [ 387.609431][ T373] ? selinux_umount+0xf0/0x130 [ 387.614180][ T373] ? security_sb_umount+0x9d/0xb0 [ 387.619198][ T373] path_umount+0xf03/0xfb0 [ 387.623600][ T373] ? namespace_unlock+0x4f0/0x4f0 [ 387.628624][ T373] ? user_path_at_empty+0x40/0x50 [ 387.633634][ T373] __x64_sys_umount+0x122/0x170 [ 387.638479][ T373] ? path_umount+0xfb0/0xfb0 [ 387.643053][ T373] ? debug_smp_processor_id+0x17/0x20 [ 387.648510][ T373] do_syscall_64+0x34/0x70 [ 387.652914][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 387.658826][ T373] RIP: 0033:0x7f5223099667 [ 387.663226][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 387.682835][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 387.691273][ T373] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 387.699245][ T373] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 387.707216][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 387.715177][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 387.723145][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 387.731116][ T373] ---[ end trace 049b48617963930f ]--- [ 387.736694][ T373] ------------[ cut here ]------------ [ 387.742161][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 387.751148][ T373] Modules linked in: [ 387.755031][ T373] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 387.766686][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 387.776822][ T373] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 387.782438][ T373] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 387.802101][ T373] RSP: 0018:ffffc90000b67ca0 EFLAGS: 00010293 [ 387.808210][ T373] RAX: ffffffff81b68cba RBX: 00000000fffffffe RCX: ffff8881073a62c0 [ 387.816176][ T373] RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 0000000000000000 [ 387.824249][ T373] RBP: ffffc90000b67d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 387.832270][ T373] R10: fffff5200016cf85 R11: 1ffff9200016cf84 R12: dffffc0000000000 [ 387.840307][ T373] R13: ffff88810e0e0000 R14: ffffc90000b67d00 R15: 1ffff9200016cf9c [ 387.848510][ T373] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 387.857437][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 387.864002][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506a0 [ 387.872071][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 387.880040][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 387.888008][ T373] Call Trace: [ 387.891296][ T373] ? lockref_get_or_lock+0x340/0x340 [ 387.896669][ T373] ? umount_tree+0xf50/0xf50 [ 387.901258][ T373] ? vfs_submount+0xb0/0xb0 [ 387.905744][ T373] ? dput+0x2b6/0x320 [ 387.909732][ T373] path_umount+0x1fe/0xfb0 [ 387.914133][ T373] ? namespace_unlock+0x4f0/0x4f0 [ 387.919153][ T373] ? user_path_at_empty+0x40/0x50 [ 387.924160][ T373] __x64_sys_umount+0x122/0x170 [ 387.929026][ T373] ? path_umount+0xfb0/0xfb0 [ 387.933603][ T373] ? debug_smp_processor_id+0x17/0x20 [ 387.938969][ T373] do_syscall_64+0x34/0x70 [ 387.943370][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 387.949255][ T373] RIP: 0033:0x7f5223099667 [ 387.953652][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 387.973253][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 387.981674][ T373] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 387.989661][ T373] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 387.997631][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 executing program [ 388.005688][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 388.013666][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 388.021653][ T373] ---[ end trace 049b486179639310 ]--- [ 388.027655][ T704] FAULT_INJECTION: forcing a failure. [ 388.027655][ T704] name failslab, interval 1, probability 0, space 0, times 0 [ 388.040328][ T704] CPU: 1 PID: 704 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 388.051948][ T704] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 388.061988][ T704] Call Trace: [ 388.065360][ T704] dump_stack_lvl+0x1e2/0x24b [ 388.070066][ T704] ? panic+0x7d7/0x7d7 [ 388.074211][ T704] ? bfq_pos_tree_add_move+0x43e/0x43e [ 388.079661][ T704] ? find_next_bit+0xd6/0x120 [ 388.084325][ T704] ? cpumask_next+0x11/0x30 [ 388.088820][ T704] dump_stack+0x15/0x17 [ 388.092961][ T704] should_fail+0x3c0/0x510 [ 388.097363][ T704] ? percpu_ref_init+0xd0/0x330 [ 388.102203][ T704] __should_failslab+0x9f/0xe0 [ 388.106955][ T704] should_failslab+0x9/0x20 [ 388.111452][ T704] kmem_cache_alloc_trace+0x3a/0x330 [ 388.116724][ T704] percpu_ref_init+0xd0/0x330 [ 388.121388][ T704] ? cgroup_setup_root+0xea0/0xea0 [ 388.126487][ T704] cgroup_apply_control_enable+0x3a2/0x12f0 [ 388.132366][ T704] cgroup_apply_control+0x93/0x710 [ 388.137462][ T704] ? css_next_child+0x160/0x160 [ 388.142301][ T704] ? stack_trace_save+0x12d/0x1f0 [ 388.147316][ T704] ? io_schedule+0x120/0x120 [ 388.151896][ T704] ? kernfs_fop_write_iter+0x15e/0x410 [ 388.157386][ T704] ? __kasan_check_write+0x14/0x20 [ 388.162494][ T704] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 388.167767][ T704] cgroup_subtree_control_write+0xd19/0x1310 [ 388.173741][ T704] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 388.179714][ T704] ? __kasan_check_write+0x14/0x20 [ 388.184817][ T704] ? _copy_from_iter+0x3fb/0xd60 [ 388.189754][ T704] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 388.195719][ T704] cgroup_file_write+0x28e/0x590 [ 388.200642][ T704] ? cgroup_seqfile_stop+0xc0/0xc0 [ 388.205737][ T704] ? mutex_lock+0xa6/0x110 [ 388.210138][ T704] ? mutex_trylock+0xb0/0xb0 [ 388.214717][ T704] ? __kasan_check_write+0x14/0x20 [ 388.219817][ T704] kernfs_fop_write_iter+0x2d0/0x410 [ 388.225092][ T704] ? cgroup_seqfile_stop+0xc0/0xc0 [ 388.230211][ T704] vfs_write+0xc1c/0xf40 [ 388.234441][ T704] ? slab_free_freelist_hook+0xcc/0x1a0 [ 388.239974][ T704] ? kernel_write+0x3c0/0x3c0 [ 388.244635][ T704] ? mutex_trylock+0xb0/0xb0 [ 388.249214][ T704] ? __fdget_pos+0x26d/0x310 [ 388.253790][ T704] ? ksys_write+0x77/0x2c0 [ 388.258190][ T704] ksys_write+0x198/0x2c0 [ 388.262522][ T704] ? __ia32_sys_read+0x90/0x90 [ 388.267272][ T704] ? debug_smp_processor_id+0x17/0x20 [ 388.272630][ T704] __x64_sys_write+0x7b/0x90 [ 388.277219][ T704] do_syscall_64+0x34/0x70 [ 388.281619][ T704] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 388.287667][ T704] RIP: 0033:0x7f5223098259 [ 388.292161][ T704] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 388.311750][ T704] RSP: 002b:00007f522303c1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 388.320152][ T704] RAX: ffffffffffffffda RBX: 00007f52231154a8 RCX: 00007f5223098259 [ 388.328105][ T704] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 388.336066][ T704] RBP: 00007f522303c1f0 R08: 0000000000000002 R09: 0000000000003634 [ 388.344029][ T704] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 388.351994][ T704] R13: 00007ffca92ff90f R14: 00007f522303c300 R15: 0000000000022000 [ 388.365119][ T376] ------------[ cut here ]------------ [ 388.370640][ T376] WARNING: CPU: 1 PID: 376 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 388.379634][ T376] Modules linked in: [ 388.383698][ T376] CPU: 1 PID: 376 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 388.395334][ T376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 388.405753][ T376] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 388.411382][ T376] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 388.431260][ T376] RSP: 0018:ffffc90000b97ba0 EFLAGS: 00010293 [ 388.437502][ T376] RAX: ffffffff81b68cba RBX: 00000000fffffffd RCX: ffff8881077913c0 [ 388.445461][ T376] RDX: 0000000000000000 RSI: 00000000fffffffd RDI: 0000000000000000 [ 388.453461][ T376] RBP: ffffc90000b97c70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 388.461451][ T376] R10: fffff52000172f65 R11: 1ffff92000172f64 R12: dffffc0000000000 [ 388.469445][ T376] R13: ffff88810e0e1500 R14: ffffc90000b97c00 R15: 1ffff92000172f7c [ 388.477426][ T376] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 388.486340][ T376] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 388.492923][ T376] CR2: 000055555703b738 CR3: 000000011cee9000 CR4: 00000000003506a0 [ 388.500896][ T376] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 388.508892][ T376] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 388.516949][ T376] Call Trace: [ 388.520228][ T376] ? io_schedule+0x120/0x120 [ 388.524802][ T376] ? vfs_submount+0xb0/0xb0 [ 388.529306][ T376] ? shrink_dentry_list+0x4ec/0x500 [ 388.534487][ T376] ? __kasan_check_write+0x14/0x20 [ 388.539597][ T376] namespace_unlock+0x448/0x4f0 [ 388.544429][ T376] ? umount_tree+0xf50/0xf50 [ 388.549017][ T376] ? __detach_mounts+0x670/0x670 [ 388.553940][ T376] ? selinux_umount+0xf0/0x130 [ 388.558700][ T376] ? security_sb_umount+0x9d/0xb0 [ 388.563706][ T376] path_umount+0xf03/0xfb0 [ 388.568145][ T376] ? namespace_unlock+0x4f0/0x4f0 [ 388.573243][ T376] ? user_path_at_empty+0x40/0x50 [ 388.578267][ T376] __x64_sys_umount+0x122/0x170 [ 388.583101][ T376] ? path_umount+0xfb0/0xfb0 [ 388.587690][ T376] ? debug_smp_processor_id+0x17/0x20 [ 388.593049][ T376] do_syscall_64+0x34/0x70 [ 388.597484][ T376] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 388.603355][ T376] RIP: 0033:0x7f5223099667 [ 388.607766][ T376] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 388.627371][ T376] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 388.635769][ T376] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 388.643742][ T376] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 388.651713][ T376] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 388.659691][ T376] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 388.667666][ T376] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 388.675626][ T376] ---[ end trace 049b486179639311 ]--- [ 388.681348][ T376] ------------[ cut here ]------------ [ 388.686818][ T376] WARNING: CPU: 1 PID: 376 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 388.695723][ T376] Modules linked in: [ 388.699619][ T376] CPU: 1 PID: 376 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 388.711254][ T376] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 388.721333][ T376] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 388.726958][ T376] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 388.746564][ T376] RSP: 0018:ffffc90000b97ca0 EFLAGS: 00010293 [ 388.752652][ T376] RAX: ffffffff81b68cba RBX: 00000000fffffffc RCX: ffff8881077913c0 [ 388.760619][ T376] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: 0000000000000000 [ 388.768588][ T376] RBP: ffffc90000b97d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 388.776546][ T376] R10: fffff52000172f85 R11: 1ffff92000172f84 R12: dffffc0000000000 [ 388.784535][ T376] R13: ffff88810e0e1500 R14: ffffc90000b97d00 R15: 1ffff92000172f9c [ 388.792507][ T376] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 388.801431][ T376] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 388.808012][ T376] CR2: 000055555703b738 CR3: 000000011cee9000 CR4: 00000000003506a0 [ 388.815968][ T376] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 388.823934][ T376] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 388.831918][ T376] Call Trace: [ 388.835193][ T376] ? lockref_get_or_lock+0x340/0x340 [ 388.840489][ T376] ? umount_tree+0xf50/0xf50 [ 388.845066][ T376] ? vfs_submount+0xb0/0xb0 [ 388.849570][ T376] ? dput+0x2b6/0x320 [ 388.853539][ T376] path_umount+0x1fe/0xfb0 [ 388.857948][ T376] ? namespace_unlock+0x4f0/0x4f0 [ 388.862953][ T376] ? user_path_at_empty+0x40/0x50 [ 388.867985][ T376] __x64_sys_umount+0x122/0x170 [ 388.872827][ T376] ? path_umount+0xfb0/0xfb0 [ 388.877419][ T376] ? debug_smp_processor_id+0x17/0x20 [ 388.882777][ T376] do_syscall_64+0x34/0x70 [ 388.887194][ T376] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 388.893065][ T376] RIP: 0033:0x7f5223099667 [ 388.897484][ T376] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 388.917082][ T376] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 388.925483][ T376] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 388.933457][ T376] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 388.941694][ T376] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 388.949691][ T376] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 executing program executing program [ 388.957668][ T376] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 388.965623][ T376] ---[ end trace 049b486179639312 ]--- [ 388.977402][ T715] FAULT_INJECTION: forcing a failure. [ 388.977402][ T715] name failslab, interval 1, probability 0, space 0, times 0 [ 388.990078][ T715] CPU: 1 PID: 715 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 389.001681][ T715] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 389.011715][ T715] Call Trace: [ 389.014986][ T715] dump_stack_lvl+0x1e2/0x24b [ 389.019652][ T715] ? bfq_pos_tree_add_move+0x43e/0x43e [ 389.025106][ T715] ? selinux_kernfs_init_security+0x1a8/0x760 [ 389.031178][ T715] dump_stack+0x15/0x17 [ 389.035317][ T715] should_fail+0x3c0/0x510 [ 389.039713][ T715] ? __kernfs_new_node+0x99/0x6e0 [ 389.044738][ T715] __should_failslab+0x9f/0xe0 [ 389.049491][ T715] should_failslab+0x9/0x20 [ 389.053975][ T715] __kmalloc_track_caller+0x5f/0x350 [ 389.059238][ T715] kstrdup_const+0x55/0x90 [ 389.063630][ T715] __kernfs_new_node+0x99/0x6e0 [ 389.068458][ T715] ? is_module_text_address+0xe1/0x140 [ 389.073894][ T715] ? kernfs_new_node+0x170/0x170 [ 389.078809][ T715] ? ptr_to_hashval+0x60/0x60 [ 389.083462][ T715] ? arch_stack_walk+0xf8/0x140 [ 389.088309][ T715] ? snprintf+0xd6/0x120 [ 389.092535][ T715] kernfs_new_node+0x97/0x170 [ 389.097189][ T715] __kernfs_create_file+0x4a/0x270 [ 389.102277][ T715] cgroup_addrm_files+0xab8/0xfe0 [ 389.107281][ T715] ? ____kasan_kmalloc+0xdc/0x110 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 389.112281][ T715] ? __kasan_kmalloc+0x9/0x10 [ 389.116951][ T715] ? kmem_cache_alloc_trace+0x1dd/0x330 [ 389.122478][ T715] ? trace_raw_output_cgroup_event+0x1f0/0x1f0 [ 389.128619][ T715] ? delete_node+0x759/0x7b0 [ 389.133287][ T715] ? __kasan_check_read+0x11/0x20 [ 389.138290][ T715] ? delete_node+0x759/0x7b0 [ 389.142859][ T715] ? __kasan_check_write+0x14/0x20 [ 389.147957][ T715] ? idr_replace+0x1c4/0x230 [ 389.152532][ T715] ? idr_get_next+0x4b0/0x4b0 [ 389.157185][ T715] ? _raw_spin_lock_bh+0xa3/0x1b0 [ 389.162188][ T715] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 389.167367][ T715] css_populate_dir+0x137/0x370 [ 389.172204][ T715] cgroup_apply_control_enable+0x8b9/0x12f0 [ 389.178082][ T715] cgroup_apply_control+0x93/0x710 [ 389.183173][ T715] ? css_next_child+0x160/0x160 [ 389.188030][ T715] ? io_schedule+0x120/0x120 [ 389.192622][ T715] ? kernfs_fop_write_iter+0x15e/0x410 [ 389.198152][ T715] ? __kasan_check_write+0x14/0x20 [ 389.203258][ T715] ? cgroup_kn_lock_live+0x1b0/0x2f0 [ 389.208521][ T715] cgroup_subtree_control_write+0xd19/0x1310 [ 389.214482][ T715] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 389.220442][ T715] ? __kasan_check_write+0x14/0x20 [ 389.225535][ T715] ? _copy_from_iter+0x3fb/0xd60 [ 389.230454][ T715] ? cgroup_subtree_control_show+0x1d0/0x1d0 [ 389.236452][ T715] cgroup_file_write+0x28e/0x590 [ 389.241382][ T715] ? cgroup_seqfile_stop+0xc0/0xc0 [ 389.246471][ T715] ? mutex_lock+0xa6/0x110 [ 389.250868][ T715] ? mutex_trylock+0xb0/0xb0 [ 389.255453][ T715] ? __kasan_check_write+0x14/0x20 [ 389.260546][ T715] kernfs_fop_write_iter+0x2d0/0x410 [ 389.265958][ T715] ? cgroup_seqfile_stop+0xc0/0xc0 [ 389.271047][ T715] vfs_write+0xc1c/0xf40 [ 389.275272][ T715] ? kernel_write+0x3c0/0x3c0 [ 389.279931][ T715] ? mutex_trylock+0xb0/0xb0 [ 389.284511][ T715] ? __fdget_pos+0x26d/0x310 [ 389.289096][ T715] ? ksys_write+0x77/0x2c0 [ 389.293492][ T715] ksys_write+0x198/0x2c0 [ 389.297799][ T715] ? __ia32_sys_read+0x90/0x90 [ 389.302545][ T715] ? debug_smp_processor_id+0x17/0x20 [ 389.307907][ T715] __x64_sys_write+0x7b/0x90 [ 389.312482][ T715] do_syscall_64+0x34/0x70 [ 389.316878][ T715] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 389.322749][ T715] RIP: 0033:0x7f5223098259 [ 389.327146][ T715] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 389.346730][ T715] RSP: 002b:00007f522301b1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 389.355123][ T715] RAX: ffffffffffffffda RBX: 00007f52231154b8 RCX: 00007f5223098259 [ 389.363088][ T715] RDX: 0000000000000006 RSI: 00000000200000c0 RDI: 0000000000000004 [ 389.371042][ T715] RBP: 00007f522301b1f0 R08: 0000000000000002 R09: 0000000000003634 [ 389.379000][ T715] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 389.386951][ T715] R13: 00007ffca92ff90f R14: 00007f522301b300 R15: 0000000000022000 [ 389.395321][ T715] cgroup: cgroup_addrm_files: failed to add max, err=-12 [ 389.403796][ T373] ------------[ cut here ]------------ [ 389.409305][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1168 mntput_no_expire+0x48a/0x6c0 [ 389.418238][ T373] Modules linked in: [ 389.422126][ T373] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 389.433753][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 389.443824][ T373] RIP: 0010:mntput_no_expire+0x48a/0x6c0 [ 389.449460][ T373] Code: 48 c7 c2 00 01 44 86 e8 04 fc 8e ff e9 8b fc ff ff e8 5a 28 b6 ff e9 81 fc ff ff e8 50 28 b6 ff e9 77 fc ff ff e8 46 28 b6 ff <0f> 0b e9 f4 fc ff ff e8 3a 28 b6 ff e8 c5 b8 a2 ff e9 ea fc ff ff [ 389.469066][ T373] RSP: 0018:ffffc90000b67ca0 EFLAGS: 00010293 [ 389.475121][ T373] RAX: ffffffff81b68cba RBX: 00000000ffffffff RCX: ffff8881073a62c0 [ 389.483116][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 389.491098][ T373] RBP: ffffc90000b67d70 R08: ffffffff81b689a8 R09: 0000000000000003 [ 389.499084][ T373] R10: fffff5200016cf85 R11: 1ffff9200016cf84 R12: dffffc0000000000 [ 389.507066][ T373] R13: ffff8881100d7340 R14: ffffc90000b67d00 R15: 1ffff9200016cf9c [ 389.515031][ T373] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 389.523971][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 389.530656][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506a0 [ 389.538659][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 389.546635][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 389.554589][ T373] Call Trace: [ 389.557893][ T373] ? lockref_get_or_lock+0x340/0x340 [ 389.563175][ T373] ? umount_tree+0xf50/0xf50 [ 389.567874][ T373] ? vfs_submount+0xb0/0xb0 [ 389.572366][ T373] ? dput+0x2b6/0x320 [ 389.576354][ T373] path_umount+0x1fe/0xfb0 [ 389.580789][ T373] ? namespace_unlock+0x4f0/0x4f0 [ 389.585812][ T373] ? user_path_at_empty+0x40/0x50 [ 389.590839][ T373] __x64_sys_umount+0x122/0x170 [ 389.595679][ T373] ? path_umount+0xfb0/0xfb0 [ 389.600264][ T373] ? debug_smp_processor_id+0x17/0x20 [ 389.605645][ T373] do_syscall_64+0x34/0x70 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 389.610078][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 389.615958][ T373] RIP: 0033:0x7f5223099667 [ 389.620471][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 389.640090][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 389.648674][ T373] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5223099667 [ 389.656638][ T373] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 389.664594][ T373] RBP: 00007ffca92fe950 R08: 00000000ffffffff R09: 00007ffca92fe730 [ 389.672587][ T373] R10: 00005555570337a3 R11: 0000000000000202 R12: 00007ffca92ffa10 [ 389.680563][ T373] R13: 0000555557033700 R14: 00007ffca92fe8c0 R15: 00007ffca92ffa50 [ 389.688535][ T373] ---[ end trace 049b486179639313 ]--- [ 389.694014][ T373] ------------[ cut here ]------------ [ 389.695982][ C0] list_add corruption. prev->next should be next (ffff8881f705c060), but was ffff888112b84870. (prev=ffff888112b84870). [ 389.699563][ T373] WARNING: CPU: 1 PID: 373 at fs/namespace.c:1109 cleanup_mnt+0x4c5/0x510 [ 389.712013][ C0] ------------[ cut here ]------------ [ 389.712020][ C0] kernel BUG at lib/list_debug.c:28! [ 389.712039][ C0] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 389.720515][ T373] Modules linked in: [ 389.725943][ C0] CPU: 0 PID: 12 Comm: ksoftirqd/0 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 389.731202][ T373] [ 389.737229][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 389.737244][ C0] RIP: 0010:__list_add_valid+0xc6/0xd0 [ 389.737261][ C0] Code: 48 c7 c7 80 c8 43 85 4c 89 e6 4c 89 f1 31 c0 e8 6d d4 3f 02 0f 0b 48 c7 c7 40 c9 43 85 4c 89 f6 4c 89 e1 31 c0 e8 57 d4 3f 02 <0f> 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 54 53 49 [ 389.741129][ T373] CPU: 1 PID: 373 Comm: syz-executor325 Tainted: G W 5.10.109-syzkaller-00693-g414e6c8e941c #0 [ 389.752274][ C0] RSP: 0018:ffffc900000c77e0 EFLAGS: 00010046 [ 389.752287][ C0] RAX: 0000000000000075 RBX: ffff8881f705c068 RCX: 081a1c86f343b400 [ 389.752301][ C0] RDX: 0000000080000101 RSI: 0000000080000101 RDI: 0000000000000000 [ 389.754605][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 389.764636][ C0] RBP: ffffc900000c7808 R08: ffffffff8153b3c8 R09: ffffed103ee0a5d8 [ 389.764644][ C0] R10: ffffed103ee0a5d8 R11: 1ffff1103ee0a5d7 R12: ffff888112b84870 [ 389.764660][ C0] R13: dffffc0000000000 R14: ffff8881f705c060 R15: ffff888112b84870 [ 389.770108][ T373] RIP: 0010:cleanup_mnt+0x4c5/0x510 [ 389.789670][ C0] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 389.789679][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 389.789695][ C0] CR2: 000055555703b738 CR3: 000000010c305000 CR4: 00000000003506b0 [ 389.801337][ T373] Code: 0f a1 ff 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 7e 0e b5 ff 48 8b 7d d0 e8 c5 07 05 00 e9 21 fd ff ff e8 6b 0e b5 ff <0f> 0b e9 e5 fc ff ff 48 c7 c1 98 c6 9e 86 80 e1 07 80 c1 03 38 c1 [ 389.807346][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 389.807354][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 389.807366][ C0] Call Trace: [ 389.815322][ T373] RSP: 0018:ffffc90000b67e30 EFLAGS: 00010293 [ 389.823272][ C0] insert_work+0x107/0x330 [ 389.823291][ C0] __queue_work+0x971/0xd30 [ 389.833331][ T373] [ 389.841282][ C0] queue_work_on+0xf2/0x150 [ 389.841300][ C0] ? wq_worker_last_func+0x50/0x50 [ 389.849256][ T373] RAX: ffffffff81b7a695 RBX: ffffe8ffffd22064 RCX: ffff8881073a62c0 [ 389.857208][ C0] ? __alloc_reserved_percpu+0x30/0x30 [ 389.857226][ C0] css_release+0xae/0xc0 [ 389.862399][ T373] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 389.871302][ C0] percpu_ref_switch_to_atomic_rcu+0x5a2/0x5b0 [ 389.871312][ C0] ? percpu_ref_noop_confirm_switch+0x10/0x10 [ 389.871330][ C0] rcu_do_batch+0x4f8/0xbc0 [ 389.877899][ T373] RBP: ffffc90000b67e80 R08: ffffffff81b7a373 R09: 0000000000000003 [ 389.885847][ C0] ? local_bh_enable+0x20/0x20 [ 389.905443][ T373] R10: fffff5200016cfc5 R11: 1ffff9200016cfc4 R12: ffff8881100d73a8 [ 389.913380][ C0] ? _raw_spin_lock_irqsave+0xf8/0x210 [ 389.913398][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 389.921365][ T373] R13: 0000000000000008 R14: dffffc0000000000 R15: 00000000ffffffff [ 389.924620][ C0] ? rcu_report_qs_rnp+0x2e0/0x3b0 [ 389.930666][ T373] FS: 0000555557031400(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 389.935034][ C0] rcu_core+0x59b/0xe30 [ 389.935051][ C0] ? rcu_cpu_kthread_park+0x90/0x90 [ 389.939534][ T373] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 389.941832][ C0] ? kvm_sched_clock_read+0x18/0x40 [ 389.946305][ T373] CR2: 000055555703b738 CR3: 000000011d0ad000 CR4: 00000000003506a0 [ 389.951388][ C0] ? sched_clock+0x3a/0x40 [ 389.951397][ C0] ? sched_clock_cpu+0x1b/0x3b0 [ 389.951412][ C0] ? irqtime_account_irq+0x76/0x270 [ 389.959377][ T373] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 389.964799][ C0] rcu_core_si+0x9/0x10 [ 389.969026][ T373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 389.976959][ C0] __do_softirq+0x27e/0x596 [ 389.976977][ C0] ? ksoftirqd_should_run+0x20/0x20 [ 389.983098][ T373] Call Trace: [ 389.989137][ C0] run_ksoftirqd+0x23/0x30 [ 389.989149][ C0] smpboot_thread_fn+0x551/0x930 [ 389.989166][ C0] ? __sched_text_start+0x8/0x8 [ 389.993646][ T373] __cleanup_mnt+0x19/0x20 [ 390.001590][ C0] ? cpu_report_death+0x1a0/0x1a0 [ 390.001600][ C0] ? schedule+0x162/0x1e0 [ 390.001617][ C0] ? __kasan_check_read+0x11/0x20 [ 390.006358][ T373] task_work_run+0x147/0x1b0 [ 390.014300][ C0] ? __kthread_parkme+0x194/0x1d0 [ 390.014309][ C0] kthread+0x349/0x3d0 [ 390.014327][ C0] ? cpu_report_death+0x1a0/0x1a0 [ 390.019772][ T373] exit_to_user_mode_loop+0xc8/0xe0 [ 390.025540][ C0] ? kthread_blkcg+0xd0/0xd0 [ 390.033505][ T373] syscall_exit_to_user_mode+0x77/0xa0 [ 390.038563][ C0] ret_from_fork+0x1f/0x30 [ 390.038577][ C0] Modules linked in: [ 390.047499][ T373] do_syscall_64+0x40/0x70 [ 390.051609][ C0] [ 390.056803][ T373] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 390.063456][ C0] ---[ end trace 049b486179639314 ]--- [ 390.068644][ T373] RIP: 0033:0x7f5223099667 [ 390.076785][ C0] RIP: 0010:__list_add_valid+0xc6/0xd0 [ 390.076802][ C0] Code: 48 c7 c7 80 c8 43 85 4c 89 e6 4c 89 f1 31 c0 e8 6d d4 3f 02 0f 0b 48 c7 c7 40 c9 43 85 4c 89 f6 4c 89 e1 31 c0 e8 57 d4 3f 02 <0f> 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 54 53 49 [ 390.081283][ T373] Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 390.086104][ C0] RSP: 0018:ffffc900000c77e0 EFLAGS: 00010046 [ 390.091299][ T373] RSP: 002b:00007ffca92fe898 EFLAGS: 00000202 [ 390.099228][ C0] [ 390.099239][ C0] RAX: 0000000000000075 RBX: ffff8881f705c068 RCX: 081a1c86f343b400 [ 390.099255][ C0] RDX: 0000000080000101 RSI: 0000000080000101 RDI: 0000000000000000 [ 390.103389][ T373] ORIG_RAX: 00000000000000a6 [ 390.111418][ C0] RBP: ffffc900000c7808 R08: ffffffff8153b3c8 R09: ffffed103ee0a5d8 [ 390.111426][ C0] R10: ffffed103ee0a5d8 R11: 1ffff1103ee0a5d7 R12: ffff888112b84870 [ 390.111432][ C0] R13: dffffc0000000000 R14: ffff8881f705c060 R15: ffff888112b84870 [ 390.111449][ C0] FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 390.115925][ T373] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5223099667 [ 390.121087][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 390.121095][ C0] CR2: 000055555703b738 CR3: 000000010c305000 CR4: 00000000003506b0 [ 390.121109][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 390.124374][ T373] RDX: 00007ffca92fe95a RSI: 000000000000000a RDI: 00007ffca92fe950 [ 390.128753][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 390.128760][ C0] Kernel panic - not syncing: Fatal exception in interrupt [ 390.133831][ C0] Kernel Offset: disabled [ 390.392099][ C0] Rebooting in 86400 seconds..