./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor638785368 <...> Warning: Permanently added '10.128.1.82' (ED25519) to the list of known hosts. execve("./syz-executor638785368", ["./syz-executor638785368"], 0x7ffd2da9b5b0 /* 10 vars */) = 0 brk(NULL) = 0x555555c78000 brk(0x555555c78d00) = 0x555555c78d00 arch_prctl(ARCH_SET_FS, 0x555555c78380) = 0 set_tid_address(0x555555c78650) = 356 set_robust_list(0x555555c78660, 24) = 0 rseq(0x555555c78ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor638785368", 4096) = 27 getrandom("\x2b\x8a\x90\x00\xc3\xd9\xe9\x41", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555c78d00 brk(0x555555c99d00) = 0x555555c99d00 brk(0x555555c9a000) = 0x555555c9a000 mprotect(0x7f919cf72000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 357 ./strace-static-x86_64: Process 357 attached [pid 357] set_robust_list(0x555555c78660, 24) = 0 [pid 357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 357] setpgid(0, 0) = 0 [pid 357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 357] write(3, "1000", 4) = 4 [pid 357] close(3) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 357] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 24.417112][ T23] audit: type=1400 audit(1695044788.800:66): avc: denied { execmem } for pid=356 comm="syz-executor638" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 24.437428][ T23] audit: type=1400 audit(1695044788.810:67): avc: denied { read } for pid=357 comm="syz-executor638" name="loop-control" dev="devtmpfs" ino=1149 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1 [pid 357] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 357] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 357] write(5, "79", 2) = 2 [ 24.461846][ T23] audit: type=1400 audit(1695044788.810:68): avc: denied { open } for pid=357 comm="syz-executor638" path="/dev/loop-control" dev="devtmpfs" ino=1149 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1 [ 24.486619][ T23] audit: type=1400 audit(1695044788.810:69): avc: denied { ioctl } for pid=357 comm="syz-executor638" path="/dev/loop-control" dev="devtmpfs" ino=1149 ioctlcmd=0x4c81 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:loop_control_device_t tclass=chr_file permissive=1 [ 24.517707][ T357] FAULT_INJECTION: forcing a failure. [ 24.517707][ T357] name failslab, interval 1, probability 0, space 0, times 1 [ 24.531631][ T357] CPU: 1 PID: 357 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 24.541903][ T357] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 24.551802][ T357] Call Trace: [ 24.554936][ T357] dump_stack+0x1d8/0x241 [ 24.559097][ T357] ? panic+0x896/0x896 [ 24.563006][ T357] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 24.568645][ T357] ? stack_trace_save+0x1c0/0x1c0 [ 24.573502][ T357] ? arch_stack_walk+0x105/0x140 [ 24.578281][ T357] should_fail+0x71f/0x880 [ 24.582536][ T357] ? setup_fault_attr+0x3d0/0x3d0 [ 24.587389][ T357] ? stack_trace_snprint+0x170/0x170 [ 24.592515][ T357] ? _raw_spin_unlock_irqrestore+0x57/0x80 [ 24.598174][ T357] ? __d_alloc+0x2a/0x6a0 [ 24.602323][ T357] should_failslab+0x5/0x20 [ 24.606658][ T357] kmem_cache_alloc+0x28/0x250 [ 24.611276][ T357] __d_alloc+0x2a/0x6a0 [ 24.615254][ T357] ? __reset_page_owner+0x1f/0x100 [ 24.620287][ T357] d_alloc_parallel+0xe7/0x1310 [ 24.624983][ T357] ? security_d_instantiate+0x97/0xf0 [ 24.630180][ T357] ? d_instantiate+0x51/0x90 [ 24.634714][ T357] ? debugfs_create_dir+0x1a2/0x380 [ 24.639771][ T357] ? bdi_register_va+0x245/0x610 [ 24.644517][ T357] ? bdi_register+0xd1/0x120 [ 24.648938][ T357] ? bdi_register_owner+0x55/0xf0 [ 24.653891][ T357] ? avc_has_perm_noaudit+0x2f1/0x3d0 [ 24.659105][ T357] ? avc_denied+0x1d0/0x1d0 [ 24.663439][ T357] ? d_hash_and_lookup+0x1e0/0x1e0 [ 24.668382][ T357] ? selinux_inode_permission+0x380/0x6a0 [ 24.673939][ T357] ? selinux_inode_permission+0x454/0x6a0 [ 24.679505][ T357] __lookup_slow+0x156/0x460 [ 24.683920][ T357] ? lookup_one_len+0x2c0/0x2c0 [ 24.688613][ T357] lookup_one_len+0x180/0x2c0 [ 24.693120][ T357] ? lookup_one_len_common+0x450/0x450 [ 24.698405][ T357] ? up_write+0xa6/0x270 [ 24.702501][ T357] start_creating+0xec/0x250 [ 24.706917][ T357] __debugfs_create_file+0x74/0x400 [ 24.711964][ T357] ? debugfs_create_dir+0x2e7/0x380 [ 24.716991][ T357] bdi_register_va+0x287/0x610 [ 24.721583][ T357] bdi_register+0xd1/0x120 [ 24.725835][ T357] ? __device_add_disk+0x551/0x1220 [ 24.730866][ T357] ? bdi_register_va+0x610/0x610 [ 24.735640][ T357] ? percpu_ref_resurrect+0x113/0x190 [ 24.740869][ T357] bdi_register_owner+0x55/0xf0 [ 24.745537][ T357] __device_add_disk+0x5d1/0x1220 [ 24.750395][ T357] ? device_add_disk+0x30/0x30 [ 24.754994][ T357] ? vsprintf+0x30/0x30 [ 24.758998][ T357] ? __alloc_disk_node+0x459/0x5a0 [ 24.763942][ T357] loop_add+0x573/0x740 [ 24.767926][ T357] loop_control_ioctl+0x448/0x620 [ 24.772791][ T357] ? loop_remove+0xa0/0xa0 [ 24.777051][ T357] ? ptrace_stop+0x6ee/0xa30 [ 24.781475][ T357] ? loop_remove+0xa0/0xa0 [ 24.785719][ T357] do_vfs_ioctl+0x742/0x1720 [ 24.790160][ T357] ? ioctl_preallocate+0x250/0x250 [ 24.795096][ T357] ? check_preemption_disabled+0x153/0x320 [ 24.800737][ T357] ? syscall_trace_enter+0x650/0x940 [ 24.805854][ T357] ? do_syscall_64+0x1c0/0x1c0 [ 24.810466][ T357] ? switch_fpu_return+0x1d4/0x410 [pid 357] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 357] exit_group(0) = ? [pid 357] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=357, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 360 ./strace-static-x86_64: Process 360 attached [pid 360] set_robust_list(0x555555c78660, 24) = 0 [pid 360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 360] setpgid(0, 0) = 0 [pid 360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 360] write(3, "1000", 4) = 4 [pid 360] close(3) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 360] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 360] ioctl(4, LOOP_CTL_REMOVE, 0) = -1 EBUSY (Device or resource busy) [pid 360] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 360] write(5, "79", 2) = 2 [pid 360] ioctl(3, LOOP_CTL_ADD, 0) = -1 EEXIST (File exists) [pid 360] exit_group(0) = ? [pid 360] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=360, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 361 ./strace-static-x86_64: Process 361 attached [pid 361] set_robust_list(0x555555c78660, 24) = 0 [pid 361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 361] setpgid(0, 0) = 0 [pid 361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 361] write(3, "1000", 4) = 4 [pid 361] close(3) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 361] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 24.815402][ T357] ? security_file_ioctl+0x7d/0xa0 [ 24.820349][ T357] __x64_sys_ioctl+0xd4/0x110 [ 24.824872][ T357] do_syscall_64+0xca/0x1c0 [ 24.829212][ T357] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 361] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 361] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 361] write(5, "79", 2) = 2 [ 24.897879][ T361] FAULT_INJECTION: forcing a failure. [ 24.897879][ T361] name failslab, interval 1, probability 0, space 0, times 0 [ 24.910840][ T361] CPU: 1 PID: 361 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 24.920691][ T361] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 24.930589][ T361] Call Trace: [ 24.933726][ T361] dump_stack+0x1d8/0x241 [ 24.937878][ T361] ? panic+0x896/0x896 [ 24.941785][ T361] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 24.947433][ T361] ? stack_trace_save+0x1c0/0x1c0 [ 24.952286][ T361] ? arch_stack_walk+0x105/0x140 [ 24.957072][ T361] should_fail+0x71f/0x880 [ 24.961316][ T361] ? setup_fault_attr+0x3d0/0x3d0 [ 24.966177][ T361] ? stack_trace_snprint+0x170/0x170 [ 24.971298][ T361] ? __d_alloc+0x2a/0x6a0 [ 24.975460][ T361] should_failslab+0x5/0x20 [ 24.979809][ T361] kmem_cache_alloc+0x28/0x250 [ 24.984409][ T361] __d_alloc+0x2a/0x6a0 [ 24.988395][ T361] ? __reset_page_owner+0x1f/0x100 [ 24.993339][ T361] d_alloc_parallel+0xe7/0x1310 [ 24.998026][ T361] ? security_d_instantiate+0x97/0xf0 [ 25.003234][ T361] ? d_instantiate+0x51/0x90 [ 25.007661][ T361] ? debugfs_create_dir+0x1a2/0x380 [ 25.012695][ T361] ? bdi_register_va+0x245/0x610 [ 25.017468][ T361] ? bdi_register+0xd1/0x120 [ 25.021903][ T361] ? bdi_register_owner+0x55/0xf0 [ 25.026772][ T361] ? avc_has_perm_noaudit+0x2f1/0x3d0 [ 25.031965][ T361] ? avc_denied+0x1d0/0x1d0 [ 25.036301][ T361] ? d_hash_and_lookup+0x1e0/0x1e0 [ 25.041265][ T361] ? selinux_inode_permission+0x380/0x6a0 [ 25.046803][ T361] ? selinux_inode_permission+0x454/0x6a0 [ 25.052396][ T361] __lookup_slow+0x156/0x460 [ 25.056793][ T361] ? lookup_one_len+0x2c0/0x2c0 [ 25.061480][ T361] lookup_one_len+0x180/0x2c0 [ 25.065987][ T361] ? lookup_one_len_common+0x450/0x450 [ 25.071290][ T361] ? up_write+0xa6/0x270 [ 25.075374][ T361] start_creating+0xec/0x250 [ 25.079796][ T361] __debugfs_create_file+0x74/0x400 [ 25.084820][ T361] ? debugfs_create_dir+0x2e7/0x380 [ 25.089945][ T361] bdi_register_va+0x287/0x610 [ 25.094661][ T361] bdi_register+0xd1/0x120 [ 25.099685][ T361] ? __device_add_disk+0x551/0x1220 [ 25.104828][ T361] ? bdi_register_va+0x610/0x610 [ 25.109589][ T361] ? percpu_ref_resurrect+0x113/0x190 [ 25.114901][ T361] bdi_register_owner+0x55/0xf0 [ 25.119580][ T361] __device_add_disk+0x5d1/0x1220 [ 25.124571][ T361] ? device_add_disk+0x30/0x30 [ 25.129164][ T361] ? vsprintf+0x30/0x30 [ 25.133156][ T361] ? __alloc_disk_node+0x459/0x5a0 [ 25.138101][ T361] loop_add+0x573/0x740 [ 25.142104][ T361] loop_control_ioctl+0x448/0x620 [ 25.146972][ T361] ? loop_remove+0xa0/0xa0 [ 25.151203][ T361] ? ptrace_stop+0x6ee/0xa30 [ 25.155630][ T361] ? loop_remove+0xa0/0xa0 [ 25.159885][ T361] do_vfs_ioctl+0x742/0x1720 [ 25.164311][ T361] ? ioctl_preallocate+0x250/0x250 [ 25.169274][ T361] ? check_preemption_disabled+0x153/0x320 [ 25.174898][ T361] ? syscall_trace_enter+0x650/0x940 [ 25.180037][ T361] ? do_syscall_64+0x1c0/0x1c0 [ 25.184617][ T361] ? switch_fpu_return+0x1d4/0x410 [ 25.189566][ T361] ? security_file_ioctl+0x7d/0xa0 [ 25.194563][ T361] __x64_sys_ioctl+0xd4/0x110 [pid 361] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 361] exit_group(0) = ? [pid 361] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=361, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 363 ./strace-static-x86_64: Process 363 attached [pid 363] set_robust_list(0x555555c78660, 24) = 0 [pid 363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 363] setpgid(0, 0) = 0 [pid 363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 363] write(3, "1000", 4) = 4 [pid 363] close(3) = 0 [pid 363] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 363] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 25.199025][ T361] do_syscall_64+0xca/0x1c0 [ 25.203364][ T361] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 363] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 363] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 363] write(5, "79", 2) = 2 [ 25.267915][ T363] FAULT_INJECTION: forcing a failure. [ 25.267915][ T363] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 25.280977][ T363] CPU: 1 PID: 363 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 25.290913][ T363] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 25.300803][ T363] Call Trace: [ 25.303935][ T363] dump_stack+0x1d8/0x241 [ 25.308094][ T363] ? panic+0x896/0x896 [ 25.311997][ T363] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 25.317645][ T363] ? stack_trace_save+0x118/0x1c0 [ 25.322501][ T363] ? stack_trace_snprint+0x170/0x170 [ 25.327622][ T363] should_fail+0x71f/0x880 [ 25.331880][ T363] ? stack_depot_save+0x417/0x480 [ 25.336734][ T363] ? setup_fault_attr+0x3d0/0x3d0 [ 25.341595][ T363] ? __kasan_kmalloc+0x1d9/0x210 [ 25.346367][ T363] ? __kasan_kmalloc+0x171/0x210 [ 25.351147][ T363] __alloc_pages_nodemask+0x1b4/0x840 [ 25.356375][ T363] ? __device_add_disk+0x5d1/0x1220 [ 25.361379][ T363] ? loop_add+0x573/0x740 [ 25.365546][ T363] ? loop_control_ioctl+0x448/0x620 [ 25.370592][ T363] ? do_syscall_64+0xca/0x1c0 [ 25.375209][ T363] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 25.380714][ T363] ? lockref_get+0x184/0x220 [ 25.385127][ T363] __get_free_pages+0xa/0x30 [ 25.389559][ T363] selinux_genfs_get_sid+0x54/0x260 [ 25.394597][ T363] inode_doinit_with_dentry+0x892/0x1050 [ 25.400054][ T363] ? sb_finish_set_opts+0x770/0x770 [ 25.405118][ T363] ? current_time+0x1af/0x2f0 [ 25.410463][ T363] ? atime_needs_update+0x590/0x590 [ 25.415490][ T363] security_d_instantiate+0x97/0xf0 [ 25.420531][ T363] d_instantiate+0x51/0x90 [ 25.424787][ T363] __debugfs_create_file+0x257/0x400 [ 25.429910][ T363] bdi_register_va+0x287/0x610 [ 25.434502][ T363] bdi_register+0xd1/0x120 [ 25.438749][ T363] ? __device_add_disk+0x551/0x1220 [ 25.443800][ T363] ? bdi_register_va+0x610/0x610 [ 25.448701][ T363] ? percpu_ref_resurrect+0x113/0x190 [ 25.453899][ T363] bdi_register_owner+0x55/0xf0 [ 25.458589][ T363] __device_add_disk+0x5d1/0x1220 [ 25.463449][ T363] ? device_add_disk+0x30/0x30 [ 25.468052][ T363] ? vsprintf+0x30/0x30 [ 25.472061][ T363] ? __alloc_disk_node+0x459/0x5a0 [ 25.476983][ T363] loop_add+0x573/0x740 [ 25.480984][ T363] loop_control_ioctl+0x448/0x620 [ 25.485845][ T363] ? loop_remove+0xa0/0xa0 [ 25.490096][ T363] ? ptrace_stop+0x6ee/0xa30 [ 25.494531][ T363] ? loop_remove+0xa0/0xa0 [ 25.498778][ T363] do_vfs_ioctl+0x742/0x1720 [ 25.503205][ T363] ? ioctl_preallocate+0x250/0x250 [ 25.508933][ T363] ? check_preemption_disabled+0x153/0x320 [pid 363] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 363] exit_group(0) = ? [pid 363] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=363, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 364 ./strace-static-x86_64: Process 364 attached [pid 364] set_robust_list(0x555555c78660, 24) = 0 [pid 364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 364] setpgid(0, 0) = 0 [pid 364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 364] write(3, "1000", 4) = 4 [pid 364] close(3) = 0 [pid 364] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 364] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 364] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 364] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 364] write(5, "79", 2) = 2 [ 25.514584][ T363] ? syscall_trace_enter+0x650/0x940 [ 25.519696][ T363] ? do_syscall_64+0x1c0/0x1c0 [ 25.524284][ T363] ? switch_fpu_return+0x1d4/0x410 [ 25.529235][ T363] ? security_file_ioctl+0x7d/0xa0 [ 25.534184][ T363] __x64_sys_ioctl+0xd4/0x110 [ 25.538696][ T363] do_syscall_64+0xca/0x1c0 [ 25.543258][ T363] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 25.587195][ T364] FAULT_INJECTION: forcing a failure. [ 25.587195][ T364] name failslab, interval 1, probability 0, space 0, times 0 [ 25.599727][ T364] CPU: 0 PID: 364 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 25.609592][ T364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 25.619485][ T364] Call Trace: [ 25.622621][ T364] dump_stack+0x1d8/0x241 [ 25.626779][ T364] ? panic+0x896/0x896 [ 25.630685][ T364] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 25.636329][ T364] ? stack_trace_save+0x1c0/0x1c0 [ 25.641204][ T364] ? arch_stack_walk+0x105/0x140 [ 25.645972][ T364] should_fail+0x71f/0x880 [ 25.650216][ T364] ? setup_fault_attr+0x3d0/0x3d0 [ 25.655079][ T364] ? stack_trace_snprint+0x170/0x170 [ 25.660200][ T364] ? __d_alloc+0x2a/0x6a0 [ 25.664369][ T364] should_failslab+0x5/0x20 [ 25.668707][ T364] kmem_cache_alloc+0x28/0x250 [ 25.673306][ T364] __d_alloc+0x2a/0x6a0 [ 25.677295][ T364] ? __reset_page_owner+0x1f/0x100 [ 25.682249][ T364] d_alloc_parallel+0xe7/0x1310 [ 25.686945][ T364] ? security_d_instantiate+0x97/0xf0 [ 25.692145][ T364] ? d_instantiate+0x51/0x90 [ 25.696577][ T364] ? debugfs_create_dir+0x1a2/0x380 [ 25.701603][ T364] ? bdi_register_va+0x245/0x610 [ 25.706375][ T364] ? bdi_register+0xd1/0x120 [ 25.710806][ T364] ? bdi_register_owner+0x55/0xf0 [ 25.715666][ T364] ? avc_has_perm_noaudit+0x2f1/0x3d0 [ 25.720883][ T364] ? avc_denied+0x1d0/0x1d0 [ 25.725205][ T364] ? d_hash_and_lookup+0x1e0/0x1e0 [ 25.730164][ T364] ? selinux_inode_permission+0x380/0x6a0 [ 25.735955][ T364] ? selinux_inode_permission+0x454/0x6a0 [ 25.741618][ T364] __lookup_slow+0x156/0x460 [ 25.746117][ T364] ? lookup_one_len+0x2c0/0x2c0 [ 25.750803][ T364] lookup_one_len+0x180/0x2c0 [ 25.755437][ T364] ? lookup_one_len_common+0x450/0x450 [ 25.760727][ T364] ? up_write+0xa6/0x270 [ 25.764803][ T364] start_creating+0xec/0x250 [ 25.769234][ T364] __debugfs_create_file+0x74/0x400 [ 25.774258][ T364] ? debugfs_create_dir+0x2e7/0x380 [ 25.779381][ T364] bdi_register_va+0x287/0x610 [ 25.783980][ T364] bdi_register+0xd1/0x120 [ 25.788236][ T364] ? __device_add_disk+0x551/0x1220 [ 25.793285][ T364] ? bdi_register_va+0x610/0x610 [ 25.798045][ T364] ? percpu_ref_resurrect+0x113/0x190 [ 25.803250][ T364] bdi_register_owner+0x55/0xf0 [ 25.808032][ T364] __device_add_disk+0x5d1/0x1220 [ 25.812891][ T364] ? device_add_disk+0x30/0x30 [ 25.817484][ T364] ? vsprintf+0x30/0x30 [ 25.821478][ T364] ? __alloc_disk_node+0x459/0x5a0 [ 25.826442][ T364] loop_add+0x573/0x740 [ 25.830423][ T364] loop_control_ioctl+0x448/0x620 [ 25.835278][ T364] ? loop_remove+0xa0/0xa0 [ 25.839536][ T364] ? ptrace_stop+0x6ee/0xa30 [ 25.843986][ T364] ? loop_remove+0xa0/0xa0 [ 25.848207][ T364] do_vfs_ioctl+0x742/0x1720 [ 25.852765][ T364] ? ioctl_preallocate+0x250/0x250 [ 25.857695][ T364] ? check_preemption_disabled+0x153/0x320 [ 25.863360][ T364] ? syscall_trace_enter+0x650/0x940 [ 25.868450][ T364] ? do_syscall_64+0x1c0/0x1c0 [ 25.873049][ T364] ? switch_fpu_return+0x1d4/0x410 [ 25.877998][ T364] ? security_file_ioctl+0x7d/0xa0 [ 25.883082][ T364] __x64_sys_ioctl+0xd4/0x110 [pid 364] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 364] exit_group(0) = ? [pid 364] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=364, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 365 ./strace-static-x86_64: Process 365 attached [pid 365] set_robust_list(0x555555c78660, 24) = 0 [pid 365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 365] setpgid(0, 0) = 0 [pid 365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 365] write(3, "1000", 4) = 4 [pid 365] close(3) = 0 [pid 365] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 365] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 365] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 365] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 365] write(5, "79", 2) = 2 [ 25.887589][ T364] do_syscall_64+0xca/0x1c0 [ 25.891927][ T364] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 25.949672][ T365] FAULT_INJECTION: forcing a failure. [ 25.949672][ T365] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 25.962828][ T365] CPU: 1 PID: 365 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 25.972785][ T365] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 25.982667][ T365] Call Trace: [ 25.985806][ T365] dump_stack+0x1d8/0x241 [ 25.989969][ T365] ? panic+0x896/0x896 [ 25.993869][ T365] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 25.999659][ T365] ? stack_trace_save+0x118/0x1c0 [ 26.004522][ T365] ? stack_trace_snprint+0x170/0x170 [ 26.009635][ T365] should_fail+0x71f/0x880 [ 26.013895][ T365] ? setup_fault_attr+0x3d0/0x3d0 [ 26.018751][ T365] ? __kasan_kmalloc+0x1d9/0x210 [ 26.023522][ T365] ? remove_wait_queue+0x120/0x120 [ 26.028472][ T365] ? __kasan_kmalloc+0x171/0x210 [ 26.033268][ T365] __alloc_pages_nodemask+0x1b4/0x840 [ 26.038458][ T365] ? __device_add_disk+0x5d1/0x1220 [ 26.043483][ T365] ? loop_add+0x573/0x740 [ 26.047658][ T365] ? loop_control_ioctl+0x448/0x620 [ 26.052686][ T365] ? do_syscall_64+0xca/0x1c0 [ 26.057198][ T365] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 26.062583][ T365] ? lockref_get+0x184/0x220 [ 26.067136][ T365] __get_free_pages+0xa/0x30 [ 26.071553][ T365] selinux_genfs_get_sid+0x54/0x260 [ 26.076591][ T365] inode_doinit_with_dentry+0x892/0x1050 [ 26.082154][ T365] ? sb_finish_set_opts+0x770/0x770 [ 26.087175][ T365] ? current_time+0x1af/0x2f0 [ 26.091690][ T365] ? atime_needs_update+0x590/0x590 [ 26.096724][ T365] security_d_instantiate+0x97/0xf0 [ 26.101756][ T365] d_instantiate+0x51/0x90 [ 26.106011][ T365] __debugfs_create_file+0x257/0x400 [ 26.111128][ T365] bdi_register_va+0x287/0x610 [ 26.115727][ T365] bdi_register+0xd1/0x120 [ 26.119992][ T365] ? __device_add_disk+0x551/0x1220 [ 26.125036][ T365] ? bdi_register_va+0x610/0x610 [ 26.129878][ T365] ? percpu_ref_resurrect+0x113/0x190 [ 26.135200][ T365] bdi_register_owner+0x55/0xf0 [ 26.139857][ T365] __device_add_disk+0x5d1/0x1220 [ 26.144723][ T365] ? device_add_disk+0x30/0x30 [ 26.149320][ T365] ? vsprintf+0x30/0x30 [ 26.153310][ T365] ? __alloc_disk_node+0x459/0x5a0 [ 26.158259][ T365] loop_add+0x573/0x740 [ 26.162424][ T365] loop_control_ioctl+0x448/0x620 [ 26.167299][ T365] ? loop_remove+0xa0/0xa0 [ 26.171537][ T365] ? ptrace_stop+0x6ee/0xa30 [ 26.175974][ T365] ? loop_remove+0xa0/0xa0 [ 26.180214][ T365] do_vfs_ioctl+0x742/0x1720 [ 26.184669][ T365] ? ioctl_preallocate+0x250/0x250 [ 26.189589][ T365] ? check_preemption_disabled+0x153/0x320 [ 26.195345][ T365] ? syscall_trace_enter+0x650/0x940 [pid 365] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 365] exit_group(0) = ? [pid 365] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=365, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 367 attached [pid 367] set_robust_list(0x555555c78660, 24) = 0 [pid 367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 367] setpgid(0, 0) = 0 [pid 367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 367] write(3, "1000", 4) = 4 [pid 367] close(3) = 0 [pid 367] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 367] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 367] ioctl(4, LOOP_CTL_REMOVE, 0 [pid 356] <... clone resumed>, child_tidptr=0x555555c78650) = 367 [pid 367] <... ioctl resumed>) = 0 [pid 367] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 367] write(5, "79", 2) = 2 [ 26.200494][ T365] ? do_syscall_64+0x1c0/0x1c0 [ 26.205061][ T365] ? switch_fpu_return+0x1d4/0x410 [ 26.210004][ T365] ? security_file_ioctl+0x7d/0xa0 [ 26.214962][ T365] __x64_sys_ioctl+0xd4/0x110 [ 26.219477][ T365] do_syscall_64+0xca/0x1c0 [ 26.223897][ T365] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 26.269111][ T367] FAULT_INJECTION: forcing a failure. [ 26.269111][ T367] name failslab, interval 1, probability 0, space 0, times 0 [ 26.282566][ T367] CPU: 0 PID: 367 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 26.292699][ T367] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 26.302690][ T367] Call Trace: [ 26.305835][ T367] dump_stack+0x1d8/0x241 [ 26.310247][ T367] ? panic+0x896/0x896 [ 26.314119][ T367] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 26.319765][ T367] ? simple_lookup+0xba/0xf0 [ 26.324190][ T367] ? __lookup_slow+0x350/0x460 [ 26.328806][ T367] should_fail+0x71f/0x880 [ 26.333041][ T367] ? setup_fault_attr+0x3d0/0x3d0 [ 26.337900][ T367] ? lookup_one_len+0x180/0x2c0 [ 26.342586][ T367] ? new_inode_pseudo+0x78/0x210 [ 26.347372][ T367] should_failslab+0x5/0x20 [ 26.351706][ T367] kmem_cache_alloc+0x28/0x250 [ 26.356310][ T367] new_inode_pseudo+0x78/0x210 [ 26.360898][ T367] new_inode+0x25/0x1d0 [ 26.364890][ T367] ? start_creating+0x15d/0x250 [ 26.369576][ T367] __debugfs_create_file+0xb6/0x400 [ 26.374613][ T367] ? debugfs_create_dir+0x2e7/0x380 [ 26.379648][ T367] bdi_register_va+0x287/0x610 [ 26.384245][ T367] bdi_register+0xd1/0x120 [ 26.388499][ T367] ? __device_add_disk+0x551/0x1220 [ 26.393531][ T367] ? bdi_register_va+0x610/0x610 [ 26.398304][ T367] ? percpu_ref_resurrect+0x113/0x190 [ 26.403517][ T367] bdi_register_owner+0x55/0xf0 [ 26.408203][ T367] __device_add_disk+0x5d1/0x1220 [ 26.413188][ T367] ? device_add_disk+0x30/0x30 [ 26.417751][ T367] ? vsprintf+0x30/0x30 [ 26.421739][ T367] ? __alloc_disk_node+0x459/0x5a0 [ 26.426693][ T367] loop_add+0x573/0x740 [ 26.430677][ T367] loop_control_ioctl+0x448/0x620 [ 26.435537][ T367] ? loop_remove+0xa0/0xa0 [ 26.439810][ T367] ? ptrace_stop+0x6ee/0xa30 [ 26.444215][ T367] ? loop_remove+0xa0/0xa0 [ 26.448469][ T367] do_vfs_ioctl+0x742/0x1720 [ 26.452920][ T367] ? ioctl_preallocate+0x250/0x250 [ 26.457872][ T367] ? check_preemption_disabled+0x153/0x320 [ 26.463485][ T367] ? syscall_trace_enter+0x650/0x940 [pid 367] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 367] exit_group(0) = ? [pid 367] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=367, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 368 attached , child_tidptr=0x555555c78650) = 368 [pid 368] set_robust_list(0x555555c78660, 24) = 0 [pid 368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 368] setpgid(0, 0) = 0 [pid 368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 368] write(3, "1000", 4) = 4 [pid 368] close(3) = 0 [pid 368] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 368] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 26.468604][ T367] ? do_syscall_64+0x1c0/0x1c0 [ 26.473205][ T367] ? switch_fpu_return+0x1d4/0x410 [ 26.478244][ T367] ? security_file_ioctl+0x7d/0xa0 [ 26.483196][ T367] __x64_sys_ioctl+0xd4/0x110 [ 26.487698][ T367] do_syscall_64+0xca/0x1c0 [ 26.492042][ T367] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 26.497971][ T367] debugfs: out of free dentries, can not create file 'stats' [pid 368] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 368] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 368] write(5, "79", 2) = 2 [ 26.559447][ T368] FAULT_INJECTION: forcing a failure. [ 26.559447][ T368] name failslab, interval 1, probability 0, space 0, times 0 [ 26.571919][ T368] CPU: 1 PID: 368 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 26.581821][ T368] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 26.591716][ T368] Call Trace: [ 26.594848][ T368] dump_stack+0x1d8/0x241 [ 26.599017][ T368] ? panic+0x896/0x896 [ 26.602917][ T368] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 26.608558][ T368] ? simple_lookup+0xba/0xf0 [ 26.612987][ T368] ? __lookup_slow+0x350/0x460 [ 26.617587][ T368] should_fail+0x71f/0x880 [ 26.621837][ T368] ? setup_fault_attr+0x3d0/0x3d0 [ 26.626701][ T368] ? lookup_one_len+0x180/0x2c0 [ 26.631383][ T368] ? new_inode_pseudo+0x78/0x210 [ 26.636156][ T368] should_failslab+0x5/0x20 [ 26.640497][ T368] kmem_cache_alloc+0x28/0x250 [ 26.645095][ T368] new_inode_pseudo+0x78/0x210 [ 26.649696][ T368] new_inode+0x25/0x1d0 [ 26.653689][ T368] ? start_creating+0x15d/0x250 [ 26.658375][ T368] __debugfs_create_file+0xb6/0x400 [ 26.663410][ T368] ? debugfs_create_dir+0x2e7/0x380 [ 26.668445][ T368] bdi_register_va+0x287/0x610 [ 26.673042][ T368] bdi_register+0xd1/0x120 [ 26.677297][ T368] ? __device_add_disk+0x551/0x1220 [ 26.682331][ T368] ? bdi_register_va+0x610/0x610 [ 26.687107][ T368] ? percpu_ref_resurrect+0x113/0x190 [ 26.692315][ T368] bdi_register_owner+0x55/0xf0 [ 26.696998][ T368] __device_add_disk+0x5d1/0x1220 [ 26.701858][ T368] ? device_add_disk+0x30/0x30 [ 26.706471][ T368] ? vsprintf+0x30/0x30 [ 26.710598][ T368] ? __alloc_disk_node+0x459/0x5a0 [ 26.715538][ T368] loop_add+0x573/0x740 [ 26.719528][ T368] loop_control_ioctl+0x448/0x620 [ 26.724388][ T368] ? loop_remove+0xa0/0xa0 [ 26.728898][ T368] ? ptrace_stop+0x6ee/0xa30 [ 26.733335][ T368] ? loop_remove+0xa0/0xa0 [ 26.737575][ T368] do_vfs_ioctl+0x742/0x1720 [ 26.742005][ T368] ? ioctl_preallocate+0x250/0x250 [ 26.746950][ T368] ? check_preemption_disabled+0x153/0x320 [ 26.752596][ T368] ? syscall_trace_enter+0x650/0x940 [pid 368] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 368] exit_group(0) = ? [pid 368] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=368, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 369 attached , child_tidptr=0x555555c78650) = 369 [pid 369] set_robust_list(0x555555c78660, 24) = 0 [pid 369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 369] setpgid(0, 0) = 0 [pid 369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 369] write(3, "1000", 4) = 4 [pid 369] close(3) = 0 [pid 369] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 369] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 26.757727][ T368] ? do_syscall_64+0x1c0/0x1c0 [ 26.762313][ T368] ? switch_fpu_return+0x1d4/0x410 [ 26.767262][ T368] ? security_file_ioctl+0x7d/0xa0 [ 26.772209][ T368] __x64_sys_ioctl+0xd4/0x110 [ 26.776719][ T368] do_syscall_64+0xca/0x1c0 [ 26.781194][ T368] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 26.787173][ T368] debugfs: out of free dentries, can not create file 'stats' [pid 369] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 369] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 369] write(5, "79", 2) = 2 [ 26.899602][ T369] FAULT_INJECTION: forcing a failure. [ 26.899602][ T369] name failslab, interval 1, probability 0, space 0, times 0 [ 26.912241][ T369] CPU: 1 PID: 369 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 26.922130][ T369] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 26.932013][ T369] Call Trace: [ 26.935137][ T369] dump_stack+0x1d8/0x241 [ 26.939291][ T369] ? panic+0x896/0x896 [ 26.943197][ T369] ? do_vfs_ioctl+0x742/0x1720 [ 26.947928][ T369] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 26.954515][ T369] should_fail+0x71f/0x880 [ 26.958778][ T369] ? setup_fault_attr+0x3d0/0x3d0 [ 26.963653][ T369] ? make_kgid+0x1f2/0x6f0 [ 26.967881][ T369] ? security_inode_alloc+0x24/0x110 [ 26.973027][ T369] should_failslab+0x5/0x20 [ 26.978177][ T369] kmem_cache_alloc+0x28/0x250 [ 26.982775][ T369] security_inode_alloc+0x24/0x110 [ 26.987719][ T369] inode_init_always+0x655/0x8a0 [ 26.992494][ T369] new_inode_pseudo+0x8f/0x210 [ 26.997093][ T369] new_inode+0x25/0x1d0 [ 27.001099][ T369] ? start_creating+0x15d/0x250 [ 27.005882][ T369] __debugfs_create_file+0xb6/0x400 [ 27.010936][ T369] ? debugfs_create_dir+0x2e7/0x380 [ 27.015949][ T369] bdi_register_va+0x287/0x610 [ 27.020636][ T369] bdi_register+0xd1/0x120 [ 27.024973][ T369] ? __device_add_disk+0x551/0x1220 [ 27.029987][ T369] ? bdi_register_va+0x610/0x610 [ 27.034761][ T369] ? percpu_ref_resurrect+0x113/0x190 [ 27.039968][ T369] bdi_register_owner+0x55/0xf0 [ 27.044663][ T369] __device_add_disk+0x5d1/0x1220 [ 27.049516][ T369] ? device_add_disk+0x30/0x30 [ 27.054112][ T369] ? vsprintf+0x30/0x30 [ 27.058121][ T369] ? __alloc_disk_node+0x459/0x5a0 [ 27.063102][ T369] loop_add+0x573/0x740 [ 27.067203][ T369] loop_control_ioctl+0x448/0x620 [ 27.072053][ T369] ? loop_remove+0xa0/0xa0 [ 27.076400][ T369] ? ptrace_stop+0x6ee/0xa30 [ 27.080838][ T369] ? loop_remove+0xa0/0xa0 [ 27.085081][ T369] do_vfs_ioctl+0x742/0x1720 [ 27.090291][ T369] ? ioctl_preallocate+0x250/0x250 [pid 369] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 369] exit_group(0) = ? [pid 369] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=369, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 370 ./strace-static-x86_64: Process 370 attached [pid 370] set_robust_list(0x555555c78660, 24) = 0 [pid 370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 370] setpgid(0, 0) = 0 [pid 370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 370] write(3, "1000", 4) = 4 [pid 370] close(3) = 0 [pid 370] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 370] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 27.095230][ T369] ? check_preemption_disabled+0x153/0x320 [ 27.100967][ T369] ? syscall_trace_enter+0x650/0x940 [ 27.106118][ T369] ? do_syscall_64+0x1c0/0x1c0 [ 27.110677][ T369] ? switch_fpu_return+0x1d4/0x410 [ 27.115625][ T369] ? security_file_ioctl+0x7d/0xa0 [ 27.120585][ T369] __x64_sys_ioctl+0xd4/0x110 [ 27.125083][ T369] do_syscall_64+0xca/0x1c0 [ 27.129424][ T369] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 27.136980][ T369] debugfs: out of free dentries, can not create file 'stats' [pid 370] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 370] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 370] write(5, "79", 2) = 2 [ 27.199167][ T370] FAULT_INJECTION: forcing a failure. [ 27.199167][ T370] name failslab, interval 1, probability 0, space 0, times 0 [ 27.211663][ T370] CPU: 0 PID: 370 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 27.221562][ T370] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 27.231439][ T370] Call Trace: [ 27.234573][ T370] dump_stack+0x1d8/0x241 [ 27.238741][ T370] ? panic+0x896/0x896 [ 27.242643][ T370] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 27.248295][ T370] ? stack_trace_save+0x1c0/0x1c0 [ 27.253160][ T370] ? arch_stack_walk+0x105/0x140 [ 27.257924][ T370] should_fail+0x71f/0x880 [ 27.262169][ T370] ? setup_fault_attr+0x3d0/0x3d0 [ 27.267117][ T370] ? stack_trace_snprint+0x170/0x170 [ 27.272247][ T370] ? __d_alloc+0x2a/0x6a0 [ 27.276405][ T370] should_failslab+0x5/0x20 [ 27.280751][ T370] kmem_cache_alloc+0x28/0x250 [ 27.285434][ T370] __d_alloc+0x2a/0x6a0 [ 27.289422][ T370] ? __reset_page_owner+0x1f/0x100 [ 27.294460][ T370] d_alloc_parallel+0xe7/0x1310 [ 27.299154][ T370] ? security_d_instantiate+0x97/0xf0 [ 27.304354][ T370] ? d_instantiate+0x51/0x90 [ 27.308779][ T370] ? debugfs_create_dir+0x1a2/0x380 [ 27.313822][ T370] ? bdi_register_va+0x245/0x610 [ 27.318588][ T370] ? bdi_register+0xd1/0x120 [ 27.323015][ T370] ? bdi_register_owner+0x55/0xf0 [ 27.327878][ T370] ? avc_has_perm_noaudit+0x2f1/0x3d0 [ 27.333111][ T370] ? avc_denied+0x1d0/0x1d0 [ 27.337437][ T370] ? d_hash_and_lookup+0x1e0/0x1e0 [ 27.342376][ T370] ? selinux_inode_permission+0x380/0x6a0 [ 27.347933][ T370] ? selinux_inode_permission+0x454/0x6a0 [ 27.353481][ T370] __lookup_slow+0x156/0x460 [ 27.357915][ T370] ? lookup_one_len+0x2c0/0x2c0 [ 27.362597][ T370] lookup_one_len+0x180/0x2c0 [ 27.367203][ T370] ? lookup_one_len_common+0x450/0x450 [ 27.372487][ T370] ? up_write+0xa6/0x270 [ 27.376576][ T370] start_creating+0xec/0x250 [ 27.381004][ T370] __debugfs_create_file+0x74/0x400 [ 27.386031][ T370] ? debugfs_create_dir+0x2e7/0x380 [ 27.391061][ T370] bdi_register_va+0x287/0x610 [ 27.395663][ T370] bdi_register+0xd1/0x120 [ 27.399917][ T370] ? __device_add_disk+0x551/0x1220 [ 27.404952][ T370] ? bdi_register_va+0x610/0x610 [ 27.409821][ T370] ? percpu_ref_resurrect+0x113/0x190 [ 27.415032][ T370] bdi_register_owner+0x55/0xf0 [ 27.419710][ T370] __device_add_disk+0x5d1/0x1220 [ 27.424570][ T370] ? device_add_disk+0x30/0x30 [ 27.429167][ T370] ? vsprintf+0x30/0x30 [ 27.433171][ T370] ? __alloc_disk_node+0x459/0x5a0 [ 27.438108][ T370] loop_add+0x573/0x740 [ 27.442129][ T370] loop_control_ioctl+0x448/0x620 [ 27.446960][ T370] ? loop_remove+0xa0/0xa0 [ 27.451225][ T370] ? ptrace_stop+0x6ee/0xa30 [ 27.455639][ T370] ? loop_remove+0xa0/0xa0 [ 27.459989][ T370] do_vfs_ioctl+0x742/0x1720 [ 27.464427][ T370] ? ioctl_preallocate+0x250/0x250 [ 27.469364][ T370] ? check_preemption_disabled+0x153/0x320 [ 27.475058][ T370] ? syscall_trace_enter+0x650/0x940 [ 27.480129][ T370] ? do_syscall_64+0x1c0/0x1c0 [ 27.484729][ T370] ? switch_fpu_return+0x1d4/0x410 [ 27.489684][ T370] ? security_file_ioctl+0x7d/0xa0 [ 27.494627][ T370] __x64_sys_ioctl+0xd4/0x110 [pid 370] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 370] exit_group(0) = ? [pid 370] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=370, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 372 ./strace-static-x86_64: Process 372 attached [pid 372] set_robust_list(0x555555c78660, 24) = 0 [pid 372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 372] setpgid(0, 0) = 0 [pid 372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 372] write(3, "1000", 4) = 4 [pid 372] close(3) = 0 [pid 372] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 372] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 27.499135][ T370] do_syscall_64+0xca/0x1c0 [ 27.503473][ T370] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 372] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 372] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 372] write(5, "79", 2) = 2 [ 27.588454][ T372] FAULT_INJECTION: forcing a failure. [ 27.588454][ T372] name failslab, interval 1, probability 0, space 0, times 0 [ 27.601113][ T372] CPU: 0 PID: 372 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 27.611090][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 27.620961][ T372] Call Trace: [ 27.624088][ T372] dump_stack+0x1d8/0x241 [ 27.628250][ T372] ? panic+0x896/0x896 [ 27.632167][ T372] ? do_vfs_ioctl+0x742/0x1720 [ 27.636766][ T372] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 27.642406][ T372] should_fail+0x71f/0x880 [ 27.646663][ T372] ? setup_fault_attr+0x3d0/0x3d0 [ 27.651512][ T372] ? make_kgid+0x1f2/0x6f0 [ 27.655873][ T372] ? security_inode_alloc+0x24/0x110 [ 27.660977][ T372] should_failslab+0x5/0x20 [ 27.665325][ T372] kmem_cache_alloc+0x28/0x250 [ 27.670034][ T372] security_inode_alloc+0x24/0x110 [ 27.674970][ T372] inode_init_always+0x655/0x8a0 [ 27.679745][ T372] new_inode_pseudo+0x8f/0x210 [ 27.684342][ T372] new_inode+0x25/0x1d0 [ 27.688335][ T372] ? start_creating+0x15d/0x250 [ 27.693031][ T372] __debugfs_create_file+0xb6/0x400 [ 27.698070][ T372] ? debugfs_create_dir+0x2e7/0x380 [ 27.703090][ T372] bdi_register_va+0x287/0x610 [ 27.707688][ T372] bdi_register+0xd1/0x120 [ 27.711939][ T372] ? __device_add_disk+0x551/0x1220 [ 27.716975][ T372] ? bdi_register_va+0x610/0x610 [ 27.721743][ T372] ? percpu_ref_resurrect+0x113/0x190 [ 27.726953][ T372] bdi_register_owner+0x55/0xf0 [ 27.731640][ T372] __device_add_disk+0x5d1/0x1220 [ 27.736499][ T372] ? device_add_disk+0x30/0x30 [ 27.741120][ T372] ? vsprintf+0x30/0x30 [ 27.745190][ T372] ? __alloc_disk_node+0x459/0x5a0 [ 27.750142][ T372] loop_add+0x573/0x740 [ 27.754129][ T372] loop_control_ioctl+0x448/0x620 [ 27.758987][ T372] ? loop_remove+0xa0/0xa0 [ 27.763243][ T372] ? ptrace_stop+0x6ee/0xa30 [ 27.767665][ T372] ? loop_remove+0xa0/0xa0 [ 27.771920][ T372] do_vfs_ioctl+0x742/0x1720 [ 27.776348][ T372] ? ioctl_preallocate+0x250/0x250 [ 27.781291][ T372] ? check_preemption_disabled+0x153/0x320 [pid 372] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 372] exit_group(0) = ? [pid 372] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=372, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 373 ./strace-static-x86_64: Process 373 attached [pid 373] set_robust_list(0x555555c78660, 24) = 0 [pid 373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 373] setpgid(0, 0) = 0 [pid 373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 373] write(3, "1000", 4) = 4 [pid 373] close(3) = 0 [pid 373] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 373] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 27.786934][ T372] ? syscall_trace_enter+0x650/0x940 [ 27.792056][ T372] ? do_syscall_64+0x1c0/0x1c0 [ 27.796657][ T372] ? switch_fpu_return+0x1d4/0x410 [ 27.801600][ T372] ? security_file_ioctl+0x7d/0xa0 [ 27.806549][ T372] __x64_sys_ioctl+0xd4/0x110 [ 27.811077][ T372] do_syscall_64+0xca/0x1c0 [ 27.815410][ T372] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 27.821344][ T372] debugfs: out of free dentries, can not create file 'stats' [pid 373] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 373] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 373] write(5, "79", 2) = 2 [ 27.879139][ T373] FAULT_INJECTION: forcing a failure. [ 27.879139][ T373] name failslab, interval 1, probability 0, space 0, times 0 [ 27.891642][ T373] CPU: 1 PID: 373 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 27.901533][ T373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 27.911408][ T373] Call Trace: [ 27.914540][ T373] dump_stack+0x1d8/0x241 [ 27.918699][ T373] ? panic+0x896/0x896 [ 27.922615][ T373] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 27.928251][ T373] ? simple_lookup+0xba/0xf0 [ 27.932675][ T373] ? __lookup_slow+0x350/0x460 [ 27.937272][ T373] should_fail+0x71f/0x880 [ 27.941529][ T373] ? setup_fault_attr+0x3d0/0x3d0 [ 27.946388][ T373] ? lookup_one_len+0x180/0x2c0 [ 27.951071][ T373] ? new_inode_pseudo+0x78/0x210 [ 27.955847][ T373] should_failslab+0x5/0x20 [ 27.960186][ T373] kmem_cache_alloc+0x28/0x250 [ 27.964795][ T373] new_inode_pseudo+0x78/0x210 [ 27.969383][ T373] new_inode+0x25/0x1d0 [ 27.973378][ T373] ? start_creating+0x15d/0x250 [ 27.978065][ T373] __debugfs_create_file+0xb6/0x400 [ 27.983110][ T373] ? debugfs_create_dir+0x2e7/0x380 [ 27.988134][ T373] bdi_register_va+0x287/0x610 [ 27.992746][ T373] bdi_register+0xd1/0x120 [ 27.996989][ T373] ? __device_add_disk+0x551/0x1220 [ 28.002026][ T373] ? bdi_register_va+0x610/0x610 [ 28.006793][ T373] ? percpu_ref_resurrect+0x113/0x190 [ 28.012002][ T373] bdi_register_owner+0x55/0xf0 [ 28.017814][ T373] __device_add_disk+0x5d1/0x1220 [ 28.022672][ T373] ? device_add_disk+0x30/0x30 [ 28.027265][ T373] ? vsprintf+0x30/0x30 [ 28.031259][ T373] ? __alloc_disk_node+0x459/0x5a0 [ 28.036215][ T373] loop_add+0x573/0x740 [ 28.040341][ T373] loop_control_ioctl+0x448/0x620 [ 28.045202][ T373] ? loop_remove+0xa0/0xa0 [ 28.049533][ T373] ? ptrace_stop+0x6ee/0xa30 [ 28.053957][ T373] ? loop_remove+0xa0/0xa0 [ 28.058224][ T373] do_vfs_ioctl+0x742/0x1720 [ 28.062642][ T373] ? ioctl_preallocate+0x250/0x250 [ 28.067688][ T373] ? check_preemption_disabled+0x153/0x320 [ 28.073331][ T373] ? syscall_trace_enter+0x650/0x940 [pid 373] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 373] exit_group(0) = ? [pid 373] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=373, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 374 ./strace-static-x86_64: Process 374 attached [pid 374] set_robust_list(0x555555c78660, 24) = 0 [pid 374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 374] setpgid(0, 0) = 0 [pid 374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 374] write(3, "1000", 4) = 4 [pid 374] close(3) = 0 [pid 374] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 374] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 28.078444][ T373] ? do_syscall_64+0x1c0/0x1c0 [ 28.083042][ T373] ? switch_fpu_return+0x1d4/0x410 [ 28.088087][ T373] ? security_file_ioctl+0x7d/0xa0 [ 28.093027][ T373] __x64_sys_ioctl+0xd4/0x110 [ 28.097550][ T373] do_syscall_64+0xca/0x1c0 [ 28.101886][ T373] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 28.109143][ T373] debugfs: out of free dentries, can not create file 'stats' [pid 374] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 374] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 374] write(5, "79", 2) = 2 [ 28.167538][ T374] FAULT_INJECTION: forcing a failure. [ 28.167538][ T374] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 28.180630][ T374] CPU: 0 PID: 374 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 28.190798][ T374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 28.200815][ T374] Call Trace: [ 28.203946][ T374] dump_stack+0x1d8/0x241 [ 28.208118][ T374] ? panic+0x896/0x896 [ 28.212028][ T374] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 28.217785][ T374] ? stack_trace_save+0x118/0x1c0 [ 28.222639][ T374] ? stack_trace_snprint+0x170/0x170 [ 28.227757][ T374] should_fail+0x71f/0x880 [ 28.232008][ T374] ? setup_fault_attr+0x3d0/0x3d0 [ 28.236952][ T374] ? __kasan_kmalloc+0x1d9/0x210 [ 28.241722][ T374] ? remove_wait_queue+0x120/0x120 [ 28.246900][ T374] ? __kasan_kmalloc+0x171/0x210 [ 28.251679][ T374] __alloc_pages_nodemask+0x1b4/0x840 [ 28.256897][ T374] ? __device_add_disk+0x5d1/0x1220 [ 28.261915][ T374] ? loop_add+0x573/0x740 [ 28.266117][ T374] ? loop_control_ioctl+0x448/0x620 [ 28.271122][ T374] ? do_syscall_64+0xca/0x1c0 [ 28.275628][ T374] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 28.281010][ T374] ? lockref_get+0x184/0x220 [ 28.285436][ T374] __get_free_pages+0xa/0x30 [ 28.289869][ T374] selinux_genfs_get_sid+0x54/0x260 [ 28.294892][ T374] inode_doinit_with_dentry+0x892/0x1050 [ 28.300359][ T374] ? sb_finish_set_opts+0x770/0x770 [ 28.305397][ T374] ? current_time+0x1af/0x2f0 [ 28.309914][ T374] ? atime_needs_update+0x590/0x590 [ 28.314939][ T374] security_d_instantiate+0x97/0xf0 [ 28.319975][ T374] d_instantiate+0x51/0x90 [ 28.324227][ T374] __debugfs_create_file+0x257/0x400 [ 28.329350][ T374] bdi_register_va+0x287/0x610 [ 28.334047][ T374] bdi_register+0xd1/0x120 [ 28.338288][ T374] ? __device_add_disk+0x551/0x1220 [ 28.343320][ T374] ? bdi_register_va+0x610/0x610 [ 28.348096][ T374] ? percpu_ref_resurrect+0x113/0x190 [ 28.353303][ T374] bdi_register_owner+0x55/0xf0 [ 28.357988][ T374] __device_add_disk+0x5d1/0x1220 [ 28.362848][ T374] ? device_add_disk+0x30/0x30 [ 28.367447][ T374] ? vsprintf+0x30/0x30 [ 28.371454][ T374] ? __alloc_disk_node+0x459/0x5a0 [ 28.376410][ T374] loop_add+0x573/0x740 [ 28.380492][ T374] loop_control_ioctl+0x448/0x620 [ 28.385523][ T374] ? loop_remove+0xa0/0xa0 [ 28.389767][ T374] ? ptrace_stop+0x6ee/0xa30 [ 28.394198][ T374] ? loop_remove+0xa0/0xa0 [ 28.398445][ T374] do_vfs_ioctl+0x742/0x1720 [ 28.402875][ T374] ? ioctl_preallocate+0x250/0x250 [ 28.407826][ T374] ? check_preemption_disabled+0x153/0x320 [ 28.413463][ T374] ? syscall_trace_enter+0x650/0x940 [pid 374] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 374] exit_group(0) = ? [pid 374] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=374, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 375 ./strace-static-x86_64: Process 375 attached [pid 375] set_robust_list(0x555555c78660, 24) = 0 [pid 375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 375] setpgid(0, 0) = 0 [pid 375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 375] write(3, "1000", 4) = 4 [pid 375] close(3) = 0 [pid 375] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 375] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 375] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 375] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 375] write(5, "79", 2) = 2 [ 28.418583][ T374] ? do_syscall_64+0x1c0/0x1c0 [ 28.423213][ T374] ? switch_fpu_return+0x1d4/0x410 [ 28.428125][ T374] ? security_file_ioctl+0x7d/0xa0 [ 28.433077][ T374] __x64_sys_ioctl+0xd4/0x110 [ 28.437583][ T374] do_syscall_64+0xca/0x1c0 [ 28.441923][ T374] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 28.498368][ T375] FAULT_INJECTION: forcing a failure. [ 28.498368][ T375] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 28.511506][ T375] CPU: 0 PID: 375 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 28.521451][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 28.531550][ T375] Call Trace: [ 28.534692][ T375] dump_stack+0x1d8/0x241 [ 28.538843][ T375] ? panic+0x896/0x896 [ 28.542748][ T375] ? unwind_next_frame+0x176a/0x1ea0 [ 28.547874][ T375] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 28.553525][ T375] ? __x64_sys_ioctl+0xd4/0x110 [ 28.558208][ T375] should_fail+0x71f/0x880 [ 28.562456][ T375] ? setup_fault_attr+0x3d0/0x3d0 [ 28.567336][ T375] ? save_stack+0x7f2/0x880 [ 28.571651][ T375] ? __set_page_owner+0x33/0x1e0 [ 28.576545][ T375] __alloc_pages_nodemask+0x1b4/0x840 [ 28.581759][ T375] ? inode_doinit_with_dentry+0x892/0x1050 [ 28.587385][ T375] ? security_d_instantiate+0x97/0xf0 [ 28.592609][ T375] ? bdi_register_va+0x245/0x610 [ 28.597380][ T375] ? __unwind_start+0x708/0x890 [ 28.602057][ T375] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 28.607437][ T375] ? deref_stack_reg+0x1f0/0x1f0 [ 28.612226][ T375] ? __set_page_owner+0x1c7/0x1e0 [ 28.617100][ T375] ? preempt_count_add+0x8f/0x180 [ 28.621932][ T375] alloc_slab_page+0x39/0x3c0 [ 28.626494][ T375] ? stack_trace_save+0x1c0/0x1c0 [ 28.631312][ T375] new_slab+0x97/0x440 [ 28.635234][ T375] ? check_preemption_disabled+0x153/0x320 [ 28.640850][ T375] ___slab_alloc+0x2fe/0x490 [ 28.645280][ T375] ? stack_trace_save+0x118/0x1c0 [ 28.650136][ T375] ? __d_alloc+0x2a/0x6a0 [ 28.654303][ T375] ? __d_alloc+0x2a/0x6a0 [ 28.658554][ T375] __slab_alloc+0x62/0xa0 [ 28.662722][ T375] ? __d_alloc+0x2a/0x6a0 [ 28.666894][ T375] kmem_cache_alloc+0x109/0x250 [ 28.673501][ T375] __d_alloc+0x2a/0x6a0 [ 28.677499][ T375] ? __reset_page_owner+0x1f/0x100 [ 28.682446][ T375] d_alloc_parallel+0xe7/0x1310 [ 28.687135][ T375] ? security_d_instantiate+0x97/0xf0 [ 28.692342][ T375] ? d_instantiate+0x51/0x90 [ 28.696764][ T375] ? debugfs_create_dir+0x1a2/0x380 [ 28.701802][ T375] ? bdi_register_va+0x245/0x610 [ 28.706568][ T375] ? bdi_register+0xd1/0x120 [ 28.710994][ T375] ? bdi_register_owner+0x55/0xf0 [ 28.715867][ T375] ? avc_has_perm_noaudit+0x2f1/0x3d0 [ 28.721106][ T375] ? avc_denied+0x1d0/0x1d0 [ 28.725400][ T375] ? d_hash_and_lookup+0x1e0/0x1e0 [ 28.730356][ T375] ? selinux_inode_permission+0x380/0x6a0 [ 28.736078][ T375] ? selinux_inode_permission+0x454/0x6a0 [ 28.741665][ T375] __lookup_slow+0x156/0x460 [ 28.746069][ T375] ? lookup_one_len+0x2c0/0x2c0 [ 28.750792][ T375] lookup_one_len+0x180/0x2c0 [ 28.755261][ T375] ? lookup_one_len_common+0x450/0x450 [ 28.760566][ T375] ? up_write+0xa6/0x270 [ 28.764632][ T375] start_creating+0xec/0x250 [ 28.769063][ T375] __debugfs_create_file+0x74/0x400 [ 28.774096][ T375] ? debugfs_create_dir+0x2e7/0x380 [ 28.779127][ T375] bdi_register_va+0x287/0x610 [ 28.783728][ T375] bdi_register+0xd1/0x120 [ 28.787985][ T375] ? __device_add_disk+0x551/0x1220 [ 28.793011][ T375] ? bdi_register_va+0x610/0x610 [ 28.797786][ T375] ? percpu_ref_resurrect+0x113/0x190 [ 28.802997][ T375] bdi_register_owner+0x55/0xf0 [ 28.807688][ T375] __device_add_disk+0x5d1/0x1220 [ 28.812544][ T375] ? device_add_disk+0x30/0x30 [ 28.817141][ T375] ? vsprintf+0x30/0x30 [ 28.821144][ T375] ? __alloc_disk_node+0x459/0x5a0 [ 28.826087][ T375] loop_add+0x573/0x740 [ 28.830082][ T375] loop_control_ioctl+0x448/0x620 [ 28.835068][ T375] ? loop_remove+0xa0/0xa0 [ 28.839306][ T375] ? ptrace_stop+0x6ee/0xa30 [ 28.843728][ T375] ? loop_remove+0xa0/0xa0 [pid 375] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 375] exit_group(0) = ? [pid 375] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=375, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 377 ./strace-static-x86_64: Process 377 attached [pid 377] set_robust_list(0x555555c78660, 24) = 0 [pid 377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 377] setpgid(0, 0) = 0 [pid 377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 377] write(3, "1000", 4) = 4 [pid 377] close(3) = 0 [pid 377] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 377] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 28.847983][ T375] do_vfs_ioctl+0x742/0x1720 [ 28.852508][ T375] ? ioctl_preallocate+0x250/0x250 [ 28.857455][ T375] ? check_preemption_disabled+0x153/0x320 [ 28.863094][ T375] ? syscall_trace_enter+0x650/0x940 [ 28.868314][ T375] ? do_syscall_64+0x1c0/0x1c0 [ 28.872998][ T375] ? switch_fpu_return+0x1d4/0x410 [ 28.877946][ T375] ? security_file_ioctl+0x7d/0xa0 [ 28.882923][ T375] __x64_sys_ioctl+0xd4/0x110 [ 28.887410][ T375] do_syscall_64+0xca/0x1c0 [ 28.891757][ T375] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 377] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 377] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 377] write(5, "79", 2) = 2 [ 28.969031][ T377] FAULT_INJECTION: forcing a failure. [ 28.969031][ T377] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 28.982297][ T377] CPU: 0 PID: 377 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 28.992241][ T377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 29.002188][ T377] Call Trace: [ 29.005270][ T377] dump_stack+0x1d8/0x241 [ 29.009426][ T377] ? panic+0x896/0x896 [ 29.013332][ T377] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 29.018973][ T377] ? stack_trace_save+0x118/0x1c0 [ 29.023838][ T377] ? stack_trace_snprint+0x170/0x170 [ 29.028960][ T377] should_fail+0x71f/0x880 [ 29.033209][ T377] ? setup_fault_attr+0x3d0/0x3d0 [ 29.038080][ T377] ? __kasan_kmalloc+0x1d9/0x210 [ 29.042842][ T377] ? remove_wait_queue+0x120/0x120 [ 29.047962][ T377] ? __kasan_kmalloc+0x171/0x210 [ 29.052778][ T377] __alloc_pages_nodemask+0x1b4/0x840 [ 29.057990][ T377] ? __device_add_disk+0x5d1/0x1220 [ 29.063017][ T377] ? loop_add+0x573/0x740 [ 29.067183][ T377] ? loop_control_ioctl+0x448/0x620 [ 29.072226][ T377] ? do_syscall_64+0xca/0x1c0 [ 29.076743][ T377] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 29.082117][ T377] ? lockref_get+0x184/0x220 [ 29.086550][ T377] __get_free_pages+0xa/0x30 [ 29.091019][ T377] selinux_genfs_get_sid+0x54/0x260 [ 29.096167][ T377] inode_doinit_with_dentry+0x892/0x1050 [ 29.101634][ T377] ? sb_finish_set_opts+0x770/0x770 [ 29.106665][ T377] ? current_time+0x1af/0x2f0 [ 29.111175][ T377] ? atime_needs_update+0x590/0x590 [ 29.116213][ T377] security_d_instantiate+0x97/0xf0 [ 29.121244][ T377] d_instantiate+0x51/0x90 [ 29.125507][ T377] debugfs_create_dir+0x1a2/0x380 [ 29.130359][ T377] bdi_register_va+0x245/0x610 [ 29.135005][ T377] bdi_register+0xd1/0x120 [ 29.139234][ T377] ? __device_add_disk+0x551/0x1220 [ 29.144241][ T377] ? bdi_register_va+0x610/0x610 [ 29.149066][ T377] ? percpu_ref_resurrect+0x113/0x190 [ 29.154227][ T377] bdi_register_owner+0x55/0xf0 [ 29.158925][ T377] __device_add_disk+0x5d1/0x1220 [ 29.163781][ T377] ? device_add_disk+0x30/0x30 [ 29.168373][ T377] ? vsprintf+0x30/0x30 [ 29.172809][ T377] ? __alloc_disk_node+0x459/0x5a0 [ 29.177771][ T377] loop_add+0x573/0x740 [ 29.181749][ T377] loop_control_ioctl+0x448/0x620 [ 29.186698][ T377] ? loop_remove+0xa0/0xa0 [ 29.190958][ T377] ? ptrace_stop+0x6ee/0xa30 [ 29.195411][ T377] ? loop_remove+0xa0/0xa0 [ 29.199646][ T377] do_vfs_ioctl+0x742/0x1720 [ 29.204058][ T377] ? ioctl_preallocate+0x250/0x250 [ 29.209023][ T377] ? check_preemption_disabled+0x153/0x320 [ 29.214676][ T377] ? syscall_trace_enter+0x650/0x940 [pid 377] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 377] exit_group(0) = ? [pid 377] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=377, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 378 ./strace-static-x86_64: Process 378 attached [pid 378] set_robust_list(0x555555c78660, 24) = 0 [pid 378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 378] setpgid(0, 0) = 0 [pid 378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 378] write(3, "1000", 4) = 4 [pid 378] close(3) = 0 [pid 378] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 378] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 29.219784][ T377] ? do_syscall_64+0x1c0/0x1c0 [ 29.224362][ T377] ? switch_fpu_return+0x1d4/0x410 [ 29.229308][ T377] ? security_file_ioctl+0x7d/0xa0 [ 29.234257][ T377] __x64_sys_ioctl+0xd4/0x110 [ 29.238778][ T377] do_syscall_64+0xca/0x1c0 [ 29.243109][ T377] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 378] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 378] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 378] write(5, "79", 2) = 2 [ 29.308424][ T378] FAULT_INJECTION: forcing a failure. [ 29.308424][ T378] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 29.321572][ T378] CPU: 0 PID: 378 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 29.331519][ T378] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 29.341410][ T378] Call Trace: [ 29.344544][ T378] dump_stack+0x1d8/0x241 [ 29.348710][ T378] ? panic+0x896/0x896 [ 29.352620][ T378] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 29.358259][ T378] ? stack_trace_save+0x118/0x1c0 [ 29.363119][ T378] ? stack_trace_snprint+0x170/0x170 [ 29.368236][ T378] should_fail+0x71f/0x880 [ 29.372488][ T378] ? setup_fault_attr+0x3d0/0x3d0 [ 29.377355][ T378] ? __kasan_kmalloc+0x1d9/0x210 [ 29.382204][ T378] ? remove_wait_queue+0x120/0x120 [ 29.387162][ T378] ? __kasan_kmalloc+0x171/0x210 [ 29.391934][ T378] __alloc_pages_nodemask+0x1b4/0x840 [ 29.397177][ T378] ? __device_add_disk+0x5d1/0x1220 [ 29.402167][ T378] ? loop_add+0x573/0x740 [ 29.406331][ T378] ? loop_control_ioctl+0x448/0x620 [ 29.411366][ T378] ? do_syscall_64+0xca/0x1c0 [ 29.415910][ T378] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 29.421267][ T378] ? lockref_get+0x184/0x220 [ 29.425743][ T378] __get_free_pages+0xa/0x30 [ 29.430119][ T378] selinux_genfs_get_sid+0x54/0x260 [ 29.435151][ T378] inode_doinit_with_dentry+0x892/0x1050 [ 29.440619][ T378] ? sb_finish_set_opts+0x770/0x770 [ 29.445657][ T378] ? current_time+0x1af/0x2f0 [ 29.450161][ T378] ? atime_needs_update+0x590/0x590 [ 29.455211][ T378] security_d_instantiate+0x97/0xf0 [ 29.460230][ T378] d_instantiate+0x51/0x90 [ 29.464582][ T378] __debugfs_create_file+0x257/0x400 [ 29.469827][ T378] bdi_register_va+0x287/0x610 [ 29.474439][ T378] bdi_register+0xd1/0x120 [ 29.478676][ T378] ? __device_add_disk+0x551/0x1220 [ 29.483707][ T378] ? bdi_register_va+0x610/0x610 [ 29.488646][ T378] ? percpu_ref_resurrect+0x113/0x190 [ 29.493844][ T378] bdi_register_owner+0x55/0xf0 [ 29.498664][ T378] __device_add_disk+0x5d1/0x1220 [ 29.503532][ T378] ? device_add_disk+0x30/0x30 [ 29.508117][ T378] ? vsprintf+0x30/0x30 [ 29.512144][ T378] ? __alloc_disk_node+0x459/0x5a0 [ 29.517251][ T378] loop_add+0x573/0x740 [ 29.521254][ T378] loop_control_ioctl+0x448/0x620 [ 29.526104][ T378] ? loop_remove+0xa0/0xa0 [ 29.530353][ T378] ? ptrace_stop+0x6ee/0xa30 [ 29.534861][ T378] ? loop_remove+0xa0/0xa0 [ 29.539114][ T378] do_vfs_ioctl+0x742/0x1720 [ 29.543542][ T378] ? ioctl_preallocate+0x250/0x250 [ 29.548489][ T378] ? check_preemption_disabled+0x153/0x320 [ 29.554136][ T378] ? syscall_trace_enter+0x650/0x940 [pid 378] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 378] exit_group(0) = ? [pid 378] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=378, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 380 ./strace-static-x86_64: Process 380 attached [pid 380] set_robust_list(0x555555c78660, 24) = 0 [pid 380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 380] setpgid(0, 0) = 0 [pid 380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 380] write(3, "1000", 4) = 4 [pid 380] close(3) = 0 [pid 380] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 380] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 380] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 380] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 380] write(5, "79", 2) = 2 [ 29.559358][ T378] ? do_syscall_64+0x1c0/0x1c0 [ 29.563957][ T378] ? switch_fpu_return+0x1d4/0x410 [ 29.568904][ T378] ? security_file_ioctl+0x7d/0xa0 [ 29.573966][ T378] __x64_sys_ioctl+0xd4/0x110 [ 29.578482][ T378] do_syscall_64+0xca/0x1c0 [ 29.582830][ T378] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 29.638414][ T380] FAULT_INJECTION: forcing a failure. [ 29.638414][ T380] name failslab, interval 1, probability 0, space 0, times 0 [ 29.650872][ T380] CPU: 0 PID: 380 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 29.660889][ T380] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 29.670783][ T380] Call Trace: [ 29.674004][ T380] dump_stack+0x1d8/0x241 [ 29.678165][ T380] ? panic+0x896/0x896 [ 29.682075][ T380] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 29.687710][ T380] ? stack_trace_save+0x1c0/0x1c0 [ 29.692569][ T380] ? arch_stack_walk+0x105/0x140 [ 29.697347][ T380] should_fail+0x71f/0x880 [ 29.701599][ T380] ? setup_fault_attr+0x3d0/0x3d0 [ 29.706459][ T380] ? stack_trace_snprint+0x170/0x170 [ 29.711583][ T380] ? __d_alloc+0x2a/0x6a0 [ 29.715846][ T380] should_failslab+0x5/0x20 [ 29.720185][ T380] kmem_cache_alloc+0x28/0x250 [ 29.724785][ T380] __d_alloc+0x2a/0x6a0 [ 29.728791][ T380] ? __reset_page_owner+0x1f/0x100 [ 29.733723][ T380] d_alloc_parallel+0xe7/0x1310 [ 29.738436][ T380] ? security_d_instantiate+0x97/0xf0 [ 29.743620][ T380] ? d_instantiate+0x51/0x90 [ 29.748043][ T380] ? debugfs_create_dir+0x1a2/0x380 [ 29.753083][ T380] ? bdi_register_va+0x245/0x610 [ 29.757856][ T380] ? bdi_register+0xd1/0x120 [ 29.762370][ T380] ? bdi_register_owner+0x55/0xf0 [ 29.767335][ T380] ? avc_has_perm_noaudit+0x2f1/0x3d0 [ 29.772527][ T380] ? avc_denied+0x1d0/0x1d0 [ 29.776866][ T380] ? d_hash_and_lookup+0x1e0/0x1e0 [ 29.781823][ T380] ? selinux_inode_permission+0x380/0x6a0 [ 29.787365][ T380] ? selinux_inode_permission+0x454/0x6a0 [ 29.792919][ T380] __lookup_slow+0x156/0x460 [ 29.797354][ T380] ? lookup_one_len+0x2c0/0x2c0 [ 29.802049][ T380] lookup_one_len+0x180/0x2c0 [ 29.806550][ T380] ? lookup_one_len_common+0x450/0x450 [ 29.811844][ T380] ? up_write+0xa6/0x270 [ 29.815921][ T380] start_creating+0xec/0x250 [ 29.820344][ T380] __debugfs_create_file+0x74/0x400 [ 29.825378][ T380] ? debugfs_create_dir+0x2e7/0x380 [ 29.830412][ T380] bdi_register_va+0x287/0x610 [ 29.836929][ T380] bdi_register+0xd1/0x120 [ 29.841175][ T380] ? __device_add_disk+0x551/0x1220 [ 29.846564][ T380] ? bdi_register_va+0x610/0x610 [ 29.851337][ T380] ? percpu_ref_resurrect+0x113/0x190 [ 29.856547][ T380] bdi_register_owner+0x55/0xf0 [ 29.861316][ T380] __device_add_disk+0x5d1/0x1220 [ 29.866186][ T380] ? device_add_disk+0x30/0x30 [ 29.870775][ T380] ? vsprintf+0x30/0x30 [ 29.874776][ T380] ? __alloc_disk_node+0x459/0x5a0 [ 29.879718][ T380] loop_add+0x573/0x740 [ 29.883713][ T380] loop_control_ioctl+0x448/0x620 [ 29.888575][ T380] ? loop_remove+0xa0/0xa0 [ 29.892822][ T380] ? ptrace_stop+0x6ee/0xa30 [ 29.897251][ T380] ? loop_remove+0xa0/0xa0 [ 29.901513][ T380] do_vfs_ioctl+0x742/0x1720 [ 29.905940][ T380] ? ioctl_preallocate+0x250/0x250 [ 29.910876][ T380] ? check_preemption_disabled+0x153/0x320 [ 29.916518][ T380] ? syscall_trace_enter+0x650/0x940 [ 29.921637][ T380] ? do_syscall_64+0x1c0/0x1c0 [ 29.926238][ T380] ? switch_fpu_return+0x1d4/0x410 [ 29.931304][ T380] ? security_file_ioctl+0x7d/0xa0 [pid 380] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 380] exit_group(0) = ? [pid 380] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=380, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 381 ./strace-static-x86_64: Process 381 attached [pid 381] set_robust_list(0x555555c78660, 24) = 0 [pid 381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 381] setpgid(0, 0) = 0 [pid 381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 381] write(3, "1000", 4) = 4 [pid 381] close(3) = 0 [pid 381] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 381] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 29.936461][ T380] __x64_sys_ioctl+0xd4/0x110 [ 29.940964][ T380] do_syscall_64+0xca/0x1c0 [ 29.945299][ T380] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 381] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 381] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 381] write(5, "79", 2) = 2 [ 30.058742][ T381] FAULT_INJECTION: forcing a failure. [ 30.058742][ T381] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 30.071796][ T381] CPU: 0 PID: 381 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 30.081739][ T381] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 30.091634][ T381] Call Trace: [ 30.094769][ T381] dump_stack+0x1d8/0x241 [ 30.098938][ T381] ? panic+0x896/0x896 [ 30.102832][ T381] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 30.108491][ T381] ? stack_trace_save+0x118/0x1c0 [ 30.113444][ T381] ? stack_trace_snprint+0x170/0x170 [ 30.118892][ T381] should_fail+0x71f/0x880 [ 30.123148][ T381] ? setup_fault_attr+0x3d0/0x3d0 [ 30.127999][ T381] ? __kasan_kmalloc+0x1d9/0x210 [ 30.132788][ T381] ? __kasan_kmalloc+0x171/0x210 [ 30.137548][ T381] __alloc_pages_nodemask+0x1b4/0x840 [ 30.142753][ T381] ? __device_add_disk+0x5d1/0x1220 [ 30.147789][ T381] ? loop_add+0x573/0x740 [ 30.151967][ T381] ? loop_control_ioctl+0x448/0x620 [ 30.156989][ T381] ? do_syscall_64+0xca/0x1c0 [ 30.161508][ T381] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 30.166888][ T381] ? lockref_get+0x184/0x220 [ 30.171346][ T381] __get_free_pages+0xa/0x30 [ 30.175748][ T381] selinux_genfs_get_sid+0x54/0x260 [ 30.180769][ T381] inode_doinit_with_dentry+0x892/0x1050 [ 30.186240][ T381] ? sb_finish_set_opts+0x770/0x770 [ 30.191279][ T381] ? current_time+0x1af/0x2f0 [ 30.195788][ T381] ? atime_needs_update+0x590/0x590 [ 30.200918][ T381] security_d_instantiate+0x97/0xf0 [ 30.205941][ T381] d_instantiate+0x51/0x90 [ 30.210190][ T381] __debugfs_create_file+0x257/0x400 [ 30.215310][ T381] bdi_register_va+0x287/0x610 [ 30.219918][ T381] bdi_register+0xd1/0x120 [ 30.224167][ T381] ? __device_add_disk+0x551/0x1220 [ 30.229196][ T381] ? bdi_register_va+0x610/0x610 [ 30.233969][ T381] ? percpu_ref_resurrect+0x113/0x190 [ 30.239308][ T381] bdi_register_owner+0x55/0xf0 [ 30.244003][ T381] __device_add_disk+0x5d1/0x1220 [ 30.248858][ T381] ? device_add_disk+0x30/0x30 [ 30.253597][ T381] ? vsprintf+0x30/0x30 [ 30.257588][ T381] ? __alloc_disk_node+0x459/0x5a0 [ 30.262535][ T381] loop_add+0x573/0x740 [ 30.266533][ T381] loop_control_ioctl+0x448/0x620 [ 30.271388][ T381] ? loop_remove+0xa0/0xa0 [ 30.275640][ T381] ? ptrace_stop+0x6ee/0xa30 [ 30.280066][ T381] ? loop_remove+0xa0/0xa0 [ 30.284405][ T381] do_vfs_ioctl+0x742/0x1720 [ 30.288835][ T381] ? ioctl_preallocate+0x250/0x250 [ 30.293782][ T381] ? check_preemption_disabled+0x153/0x320 [ 30.299435][ T381] ? syscall_trace_enter+0x650/0x940 [ 30.304540][ T381] ? do_syscall_64+0x1c0/0x1c0 [pid 381] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 381] exit_group(0) = ? [pid 381] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=381, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 382 ./strace-static-x86_64: Process 382 attached [pid 382] set_robust_list(0x555555c78660, 24) = 0 [pid 382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 382] setpgid(0, 0) = 0 [pid 382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 382] write(3, "1000", 4) = 4 [pid 382] close(3) = 0 [pid 382] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 382] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 30.309140][ T381] ? switch_fpu_return+0x1d4/0x410 [ 30.314176][ T381] ? security_file_ioctl+0x7d/0xa0 [ 30.319128][ T381] __x64_sys_ioctl+0xd4/0x110 [ 30.323637][ T381] do_syscall_64+0xca/0x1c0 [ 30.328271][ T381] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 382] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 382] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 382] write(5, "79", 2) = 2 [ 30.399329][ T382] FAULT_INJECTION: forcing a failure. [ 30.399329][ T382] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 30.412548][ T382] CPU: 1 PID: 382 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 30.422417][ T382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 30.432296][ T382] Call Trace: [ 30.435432][ T382] dump_stack+0x1d8/0x241 [ 30.439601][ T382] ? panic+0x896/0x896 [ 30.443501][ T382] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 30.449144][ T382] ? stack_trace_save+0x118/0x1c0 [ 30.454024][ T382] ? stack_trace_snprint+0x170/0x170 [ 30.459135][ T382] should_fail+0x71f/0x880 [ 30.463382][ T382] ? setup_fault_attr+0x3d0/0x3d0 [ 30.468323][ T382] ? __kasan_kmalloc+0x1d9/0x210 [ 30.473093][ T382] ? __kasan_kmalloc+0x171/0x210 [ 30.477865][ T382] __alloc_pages_nodemask+0x1b4/0x840 [ 30.483081][ T382] ? __device_add_disk+0x5d1/0x1220 [ 30.488119][ T382] ? loop_add+0x573/0x740 [ 30.492274][ T382] ? loop_control_ioctl+0x448/0x620 [ 30.497313][ T382] ? do_syscall_64+0xca/0x1c0 [ 30.501821][ T382] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 30.507203][ T382] ? lockref_get+0x184/0x220 [ 30.511642][ T382] __get_free_pages+0xa/0x30 [ 30.516061][ T382] selinux_genfs_get_sid+0x54/0x260 [ 30.521099][ T382] inode_doinit_with_dentry+0x892/0x1050 [ 30.526562][ T382] ? sb_finish_set_opts+0x770/0x770 [ 30.531589][ T382] ? current_time+0x1af/0x2f0 [ 30.536101][ T382] ? atime_needs_update+0x590/0x590 [ 30.541144][ T382] security_d_instantiate+0x97/0xf0 [ 30.546178][ T382] d_instantiate+0x51/0x90 [ 30.550429][ T382] debugfs_create_dir+0x1a2/0x380 [ 30.555282][ T382] bdi_register_va+0x245/0x610 [ 30.559884][ T382] bdi_register+0xd1/0x120 [ 30.564140][ T382] ? __device_add_disk+0x551/0x1220 [ 30.569174][ T382] ? bdi_register_va+0x610/0x610 [ 30.573944][ T382] ? percpu_ref_resurrect+0x113/0x190 [ 30.579154][ T382] bdi_register_owner+0x55/0xf0 [ 30.583852][ T382] __device_add_disk+0x5d1/0x1220 [ 30.588701][ T382] ? device_add_disk+0x30/0x30 [ 30.593407][ T382] ? vsprintf+0x30/0x30 [ 30.597387][ T382] ? __alloc_disk_node+0x459/0x5a0 [ 30.602347][ T382] loop_add+0x573/0x740 [ 30.606364][ T382] loop_control_ioctl+0x448/0x620 [ 30.611193][ T382] ? loop_remove+0xa0/0xa0 [ 30.615446][ T382] ? ptrace_stop+0x6ee/0xa30 [ 30.619871][ T382] ? loop_remove+0xa0/0xa0 [ 30.624118][ T382] do_vfs_ioctl+0x742/0x1720 [ 30.628549][ T382] ? ioctl_preallocate+0x250/0x250 [ 30.633620][ T382] ? check_preemption_disabled+0x153/0x320 [ 30.639252][ T382] ? syscall_trace_enter+0x650/0x940 [ 30.644380][ T382] ? do_syscall_64+0x1c0/0x1c0 [pid 382] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 382] exit_group(0) = ? [pid 382] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=382, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 384 ./strace-static-x86_64: Process 384 attached [pid 384] set_robust_list(0x555555c78660, 24) = 0 [pid 384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 384] setpgid(0, 0) = 0 [pid 384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 384] write(3, "1000", 4) = 4 [pid 384] close(3) = 0 [pid 384] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 384] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 30.649172][ T382] ? switch_fpu_return+0x1d4/0x410 [ 30.654125][ T382] ? security_file_ioctl+0x7d/0xa0 [ 30.659069][ T382] __x64_sys_ioctl+0xd4/0x110 [ 30.663680][ T382] do_syscall_64+0xca/0x1c0 [ 30.668015][ T382] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 384] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 384] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 384] write(5, "79", 2) = 2 [ 30.737233][ T384] FAULT_INJECTION: forcing a failure. [ 30.737233][ T384] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 30.750328][ T384] CPU: 0 PID: 384 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 30.760222][ T384] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 30.770116][ T384] Call Trace: [ 30.773248][ T384] dump_stack+0x1d8/0x241 [ 30.777414][ T384] ? panic+0x896/0x896 [ 30.781308][ T384] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 30.786950][ T384] ? stack_trace_save+0x118/0x1c0 [ 30.791816][ T384] ? stack_trace_snprint+0x170/0x170 [ 30.796944][ T384] should_fail+0x71f/0x880 [ 30.801191][ T384] ? setup_fault_attr+0x3d0/0x3d0 [ 30.806046][ T384] ? __kasan_kmalloc+0x1d9/0x210 [ 30.810820][ T384] ? remove_wait_queue+0x120/0x120 [ 30.815789][ T384] ? __kasan_kmalloc+0x171/0x210 [ 30.820544][ T384] __alloc_pages_nodemask+0x1b4/0x840 [ 30.825757][ T384] ? __device_add_disk+0x5d1/0x1220 [ 30.830785][ T384] ? loop_add+0x573/0x740 [ 30.834948][ T384] ? loop_control_ioctl+0x448/0x620 [ 30.839984][ T384] ? do_syscall_64+0xca/0x1c0 [ 30.844494][ T384] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 30.849877][ T384] ? lockref_get+0x184/0x220 [ 30.854301][ T384] __get_free_pages+0xa/0x30 [ 30.858730][ T384] selinux_genfs_get_sid+0x54/0x260 [ 30.863763][ T384] inode_doinit_with_dentry+0x892/0x1050 [ 30.869234][ T384] ? sb_finish_set_opts+0x770/0x770 [ 30.874263][ T384] ? current_time+0x1af/0x2f0 [ 30.878779][ T384] ? atime_needs_update+0x590/0x590 [ 30.883810][ T384] security_d_instantiate+0x97/0xf0 [ 30.888849][ T384] d_instantiate+0x51/0x90 [ 30.893099][ T384] __debugfs_create_file+0x257/0x400 [ 30.898221][ T384] bdi_register_va+0x287/0x610 [ 30.902885][ T384] bdi_register+0xd1/0x120 [ 30.907079][ T384] ? __device_add_disk+0x551/0x1220 [ 30.912117][ T384] ? bdi_register_va+0x610/0x610 [ 30.916885][ T384] ? percpu_ref_resurrect+0x113/0x190 [ 30.922179][ T384] bdi_register_owner+0x55/0xf0 [ 30.927036][ T384] __device_add_disk+0x5d1/0x1220 [ 30.931893][ T384] ? device_add_disk+0x30/0x30 [ 30.936493][ T384] ? vsprintf+0x30/0x30 [ 30.940484][ T384] ? __alloc_disk_node+0x459/0x5a0 [ 30.945442][ T384] loop_add+0x573/0x740 [ 30.949425][ T384] loop_control_ioctl+0x448/0x620 [ 30.954286][ T384] ? loop_remove+0xa0/0xa0 [ 30.958552][ T384] ? ptrace_stop+0x6ee/0xa30 [ 30.962965][ T384] ? loop_remove+0xa0/0xa0 [ 30.967216][ T384] do_vfs_ioctl+0x742/0x1720 [ 30.971651][ T384] ? ioctl_preallocate+0x250/0x250 [ 30.976619][ T384] ? check_preemption_disabled+0x153/0x320 [ 30.982245][ T384] ? syscall_trace_enter+0x650/0x940 [pid 384] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 384] exit_group(0) = ? [pid 384] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=384, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 385 ./strace-static-x86_64: Process 385 attached [pid 385] set_robust_list(0x555555c78660, 24) = 0 [pid 385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 385] setpgid(0, 0) = 0 [pid 385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 385] write(3, "1000", 4) = 4 [pid 385] close(3) = 0 [pid 385] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 385] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 30.987356][ T384] ? do_syscall_64+0x1c0/0x1c0 [ 30.991953][ T384] ? switch_fpu_return+0x1d4/0x410 [ 30.997009][ T384] ? security_file_ioctl+0x7d/0xa0 [ 31.001948][ T384] __x64_sys_ioctl+0xd4/0x110 [ 31.006462][ T384] do_syscall_64+0xca/0x1c0 [ 31.010805][ T384] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 385] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 385] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 385] write(5, "79", 2) = 2 [ 31.088371][ T385] FAULT_INJECTION: forcing a failure. [ 31.088371][ T385] name failslab, interval 1, probability 0, space 0, times 0 [ 31.100827][ T385] CPU: 0 PID: 385 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 31.110749][ T385] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 31.120642][ T385] Call Trace: [ 31.123779][ T385] dump_stack+0x1d8/0x241 [ 31.127939][ T385] ? panic+0x896/0x896 [ 31.131932][ T385] ? check_preemption_disabled+0x9f/0x320 [ 31.137489][ T385] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 31.143128][ T385] ? _raw_spin_lock_bh+0xa4/0x1b0 [ 31.147984][ T385] ? debug_smp_processor_id+0x20/0x20 [ 31.153323][ T385] ? __debugfs_create_file+0x367/0x400 [ 31.158606][ T385] should_fail+0x71f/0x880 [ 31.162861][ T385] ? bdi_register_va+0x47d/0x610 [ 31.167632][ T385] ? setup_fault_attr+0x3d0/0x3d0 [ 31.172496][ T385] ? bdi_register+0xd1/0x120 [ 31.176917][ T385] ? __device_add_disk+0x551/0x1220 [ 31.182046][ T385] ? kobj_map+0x65/0x5a0 [ 31.186126][ T385] should_failslab+0x5/0x20 [ 31.190811][ T385] __kmalloc+0x51/0x2e0 [ 31.194822][ T385] kobj_map+0x65/0x5a0 [ 31.198714][ T385] ? disk_check_events+0x600/0x600 [ 31.203726][ T385] ? exact_match+0x20/0x20 [ 31.207916][ T385] __device_add_disk+0x65a/0x1220 [ 31.212901][ T385] ? device_add_disk+0x30/0x30 [ 31.217478][ T385] ? vsprintf+0x30/0x30 [ 31.221495][ T385] ? __alloc_disk_node+0x459/0x5a0 [ 31.226499][ T385] loop_add+0x573/0x740 [ 31.230516][ T385] loop_control_ioctl+0x448/0x620 [ 31.235448][ T385] ? loop_remove+0xa0/0xa0 [ 31.239695][ T385] ? ptrace_stop+0x6ee/0xa30 [ 31.244120][ T385] ? loop_remove+0xa0/0xa0 [ 31.248372][ T385] do_vfs_ioctl+0x742/0x1720 [ 31.252826][ T385] ? ioctl_preallocate+0x250/0x250 [ 31.257765][ T385] ? check_preemption_disabled+0x153/0x320 [ 31.263392][ T385] ? syscall_trace_enter+0x650/0x940 [ 31.268522][ T385] ? do_syscall_64+0x1c0/0x1c0 [ 31.273108][ T385] ? switch_fpu_return+0x1d4/0x410 [ 31.278062][ T385] ? security_file_ioctl+0x7d/0xa0 [ 31.283002][ T385] __x64_sys_ioctl+0xd4/0x110 [pid 385] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 385] exit_group(0) = ? [pid 385] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=385, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 386 attached , child_tidptr=0x555555c78650) = 386 [pid 386] set_robust_list(0x555555c78660, 24) = 0 [pid 386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 386] setpgid(0, 0) = 0 [pid 386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 386] write(3, "1000", 4) = 4 [pid 386] close(3) = 0 [pid 386] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 386] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 31.287526][ T385] do_syscall_64+0xca/0x1c0 [ 31.291942][ T385] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 386] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 386] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 386] write(5, "79", 2) = 2 [ 31.418743][ T386] FAULT_INJECTION: forcing a failure. [ 31.418743][ T386] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 31.431859][ T386] CPU: 0 PID: 386 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 31.441850][ T386] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 31.452176][ T386] Call Trace: [ 31.455311][ T386] dump_stack+0x1d8/0x241 [ 31.459469][ T386] ? panic+0x896/0x896 [ 31.463377][ T386] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 31.469024][ T386] ? stack_trace_save+0x118/0x1c0 [ 31.473887][ T386] ? stack_trace_snprint+0x170/0x170 [ 31.479001][ T386] should_fail+0x71f/0x880 [ 31.483253][ T386] ? setup_fault_attr+0x3d0/0x3d0 [ 31.488119][ T386] ? __kasan_kmalloc+0x1d9/0x210 [ 31.492889][ T386] ? remove_wait_queue+0x120/0x120 [ 31.497834][ T386] ? __kasan_kmalloc+0x171/0x210 [ 31.502605][ T386] __alloc_pages_nodemask+0x1b4/0x840 [ 31.507820][ T386] ? __device_add_disk+0x5d1/0x1220 [ 31.512859][ T386] ? loop_add+0x573/0x740 [ 31.517628][ T386] ? loop_control_ioctl+0x448/0x620 [ 31.522657][ T386] ? do_syscall_64+0xca/0x1c0 [ 31.527201][ T386] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 31.532567][ T386] ? lockref_get+0x184/0x220 [ 31.536994][ T386] __get_free_pages+0xa/0x30 [ 31.541404][ T386] selinux_genfs_get_sid+0x54/0x260 [ 31.546440][ T386] inode_doinit_with_dentry+0x892/0x1050 [ 31.551912][ T386] ? sb_finish_set_opts+0x770/0x770 [ 31.556937][ T386] ? current_time+0x1af/0x2f0 [ 31.561453][ T386] ? atime_needs_update+0x590/0x590 [ 31.566484][ T386] security_d_instantiate+0x97/0xf0 [ 31.571529][ T386] d_instantiate+0x51/0x90 [ 31.576012][ T386] __debugfs_create_file+0x257/0x400 [ 31.581131][ T386] bdi_register_va+0x287/0x610 [ 31.585717][ T386] bdi_register+0xd1/0x120 [ 31.589982][ T386] ? __device_add_disk+0x551/0x1220 [ 31.595005][ T386] ? bdi_register_va+0x610/0x610 [ 31.599774][ T386] ? percpu_ref_resurrect+0x113/0x190 [ 31.604986][ T386] bdi_register_owner+0x55/0xf0 [ 31.609678][ T386] __device_add_disk+0x5d1/0x1220 [ 31.614553][ T386] ? device_add_disk+0x30/0x30 [ 31.619134][ T386] ? vsprintf+0x30/0x30 [ 31.623132][ T386] ? __alloc_disk_node+0x459/0x5a0 [ 31.628084][ T386] loop_add+0x573/0x740 [ 31.632069][ T386] loop_control_ioctl+0x448/0x620 [ 31.636956][ T386] ? loop_remove+0xa0/0xa0 [ 31.641300][ T386] ? ptrace_stop+0x6ee/0xa30 [ 31.645721][ T386] ? loop_remove+0xa0/0xa0 [ 31.649979][ T386] do_vfs_ioctl+0x742/0x1720 [ 31.654404][ T386] ? ioctl_preallocate+0x250/0x250 [ 31.659526][ T386] ? check_preemption_disabled+0x153/0x320 [ 31.665164][ T386] ? syscall_trace_enter+0x650/0x940 [ 31.670282][ T386] ? do_syscall_64+0x1c0/0x1c0 [ 31.674972][ T386] ? switch_fpu_return+0x1d4/0x410 [ 31.679927][ T386] ? security_file_ioctl+0x7d/0xa0 [ 31.684874][ T386] __x64_sys_ioctl+0xd4/0x110 [ 31.689380][ T386] do_syscall_64+0xca/0x1c0 [ 31.693821][ T386] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 386] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 386] exit_group(0) = ? [pid 386] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=386, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 388 ./strace-static-x86_64: Process 388 attached [pid 388] set_robust_list(0x555555c78660, 24) = 0 [pid 388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 388] setpgid(0, 0) = 0 [pid 388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 388] write(3, "1000", 4) = 4 [pid 388] close(3) = 0 [pid 388] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 388] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 31.701175][ T23] audit: type=1400 audit(1695044796.090:70): avc: denied { remove_name } for pid=144 comm="syslogd" name="messages" dev="tmpfs" ino=10178 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 31.724935][ T23] audit: type=1400 audit(1695044796.090:71): avc: denied { rename } for pid=144 comm="syslogd" name="messages" dev="tmpfs" ino=10178 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=file permissive=1 [pid 388] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 388] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 388] write(5, "79", 2) = 2 [ 31.819619][ T388] FAULT_INJECTION: forcing a failure. [ 31.819619][ T388] name failslab, interval 1, probability 0, space 0, times 0 [ 31.832152][ T388] CPU: 0 PID: 388 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 31.842080][ T388] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 31.851976][ T388] Call Trace: [ 31.855109][ T388] dump_stack+0x1d8/0x241 [ 31.859280][ T388] ? panic+0x896/0x896 [ 31.863177][ T388] ? do_vfs_ioctl+0x742/0x1720 [ 31.867776][ T388] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 31.873437][ T388] should_fail+0x71f/0x880 [ 31.877762][ T388] ? setup_fault_attr+0x3d0/0x3d0 [ 31.882703][ T388] ? make_kgid+0x1f2/0x6f0 [ 31.886960][ T388] ? security_inode_alloc+0x24/0x110 [ 31.892082][ T388] should_failslab+0x5/0x20 [ 31.896441][ T388] kmem_cache_alloc+0x28/0x250 [ 31.901108][ T388] security_inode_alloc+0x24/0x110 [ 31.906151][ T388] inode_init_always+0x655/0x8a0 [ 31.910927][ T388] new_inode_pseudo+0x8f/0x210 [ 31.915524][ T388] new_inode+0x25/0x1d0 [ 31.919521][ T388] ? start_creating+0x15d/0x250 [ 31.924204][ T388] __debugfs_create_file+0xb6/0x400 [ 31.929247][ T388] ? debugfs_create_dir+0x2e7/0x380 [ 31.934288][ T388] bdi_register_va+0x287/0x610 [ 31.938870][ T388] bdi_register+0xd1/0x120 [ 31.943132][ T388] ? __device_add_disk+0x551/0x1220 [ 31.948163][ T388] ? bdi_register_va+0x610/0x610 [ 31.952928][ T388] ? percpu_ref_resurrect+0x113/0x190 [ 31.958145][ T388] bdi_register_owner+0x55/0xf0 [ 31.962836][ T388] __device_add_disk+0x5d1/0x1220 [ 31.967726][ T388] ? device_add_disk+0x30/0x30 [ 31.972384][ T388] ? vsprintf+0x30/0x30 [ 31.976364][ T388] ? __alloc_disk_node+0x459/0x5a0 [ 31.981310][ T388] loop_add+0x573/0x740 [ 31.985303][ T388] loop_control_ioctl+0x448/0x620 [ 31.990170][ T388] ? loop_remove+0xa0/0xa0 [ 31.994419][ T388] ? ptrace_stop+0x6ee/0xa30 [ 31.998843][ T388] ? loop_remove+0xa0/0xa0 [ 32.003096][ T388] do_vfs_ioctl+0x742/0x1720 [ 32.007526][ T388] ? ioctl_preallocate+0x250/0x250 [ 32.012647][ T388] ? check_preemption_disabled+0x153/0x320 [pid 388] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 388] exit_group(0) = ? [pid 388] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=388, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 389 ./strace-static-x86_64: Process 389 attached [pid 389] set_robust_list(0x555555c78660, 24) = 0 [pid 389] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 389] setpgid(0, 0) = 0 [pid 389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 389] write(3, "1000", 4) = 4 [pid 389] close(3) = 0 [pid 389] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 389] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 389] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 389] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 389] write(5, "79", 2) = 2 [ 32.018286][ T388] ? syscall_trace_enter+0x650/0x940 [ 32.023753][ T388] ? do_syscall_64+0x1c0/0x1c0 [ 32.028978][ T388] ? switch_fpu_return+0x1d4/0x410 [ 32.033917][ T388] ? security_file_ioctl+0x7d/0xa0 [ 32.038967][ T388] __x64_sys_ioctl+0xd4/0x110 [ 32.043489][ T388] do_syscall_64+0xca/0x1c0 [ 32.047815][ T388] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 32.053835][ T388] debugfs: out of free dentries, can not create file 'stats' [ 32.098639][ T389] FAULT_INJECTION: forcing a failure. [ 32.098639][ T389] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 32.111694][ T389] CPU: 1 PID: 389 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 32.121626][ T389] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 32.131533][ T389] Call Trace: [ 32.134739][ T389] dump_stack+0x1d8/0x241 [ 32.138898][ T389] ? panic+0x896/0x896 [ 32.142805][ T389] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 32.148452][ T389] ? stack_trace_save+0x118/0x1c0 [ 32.153323][ T389] ? stack_trace_snprint+0x170/0x170 [ 32.158431][ T389] should_fail+0x71f/0x880 [ 32.162684][ T389] ? setup_fault_attr+0x3d0/0x3d0 [ 32.167543][ T389] ? __kasan_kmalloc+0x1d9/0x210 [ 32.172315][ T389] ? remove_wait_queue+0x120/0x120 [ 32.177270][ T389] ? __kasan_kmalloc+0x171/0x210 [ 32.182035][ T389] __alloc_pages_nodemask+0x1b4/0x840 [ 32.187368][ T389] ? __device_add_disk+0x5d1/0x1220 [ 32.192376][ T389] ? loop_add+0x573/0x740 [ 32.196541][ T389] ? loop_control_ioctl+0x448/0x620 [ 32.201583][ T389] ? do_syscall_64+0xca/0x1c0 [ 32.206094][ T389] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 32.211470][ T389] ? lockref_get+0x184/0x220 [ 32.215918][ T389] __get_free_pages+0xa/0x30 [ 32.220336][ T389] selinux_genfs_get_sid+0x54/0x260 [ 32.225375][ T389] inode_doinit_with_dentry+0x892/0x1050 [ 32.230921][ T389] ? sb_finish_set_opts+0x770/0x770 [ 32.236037][ T389] ? current_time+0x1af/0x2f0 [ 32.240544][ T389] ? atime_needs_update+0x590/0x590 [ 32.245580][ T389] security_d_instantiate+0x97/0xf0 [ 32.250626][ T389] d_instantiate+0x51/0x90 [ 32.254889][ T389] __debugfs_create_file+0x257/0x400 [ 32.260103][ T389] bdi_register_va+0x287/0x610 [ 32.264728][ T389] bdi_register+0xd1/0x120 [ 32.268942][ T389] ? __device_add_disk+0x551/0x1220 [ 32.274279][ T389] ? bdi_register_va+0x610/0x610 [ 32.279037][ T389] ? percpu_ref_resurrect+0x113/0x190 [ 32.284470][ T389] bdi_register_owner+0x55/0xf0 [ 32.289154][ T389] __device_add_disk+0x5d1/0x1220 [ 32.294193][ T389] ? device_add_disk+0x30/0x30 [ 32.298785][ T389] ? vsprintf+0x30/0x30 [ 32.302954][ T389] ? __alloc_disk_node+0x459/0x5a0 [ 32.307899][ T389] loop_add+0x573/0x740 [ 32.311895][ T389] loop_control_ioctl+0x448/0x620 [ 32.316748][ T389] ? loop_remove+0xa0/0xa0 [ 32.321109][ T389] ? ptrace_stop+0x6ee/0xa30 [ 32.325525][ T389] ? loop_remove+0xa0/0xa0 [ 32.329863][ T389] do_vfs_ioctl+0x742/0x1720 [ 32.334298][ T389] ? ioctl_preallocate+0x250/0x250 [ 32.339241][ T389] ? check_preemption_disabled+0x153/0x320 [pid 389] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 389] exit_group(0) = ? [pid 389] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=389, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 390 ./strace-static-x86_64: Process 390 attached [pid 390] set_robust_list(0x555555c78660, 24) = 0 [pid 390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 390] setpgid(0, 0) = 0 [pid 390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 390] write(3, "1000", 4) = 4 [pid 390] close(3) = 0 [pid 390] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 390] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 390] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 390] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [ 32.344880][ T389] ? syscall_trace_enter+0x650/0x940 [ 32.350218][ T389] ? do_syscall_64+0x1c0/0x1c0 [ 32.354835][ T389] ? switch_fpu_return+0x1d4/0x410 [ 32.359770][ T389] ? security_file_ioctl+0x7d/0xa0 [ 32.364726][ T389] __x64_sys_ioctl+0xd4/0x110 [ 32.369227][ T389] do_syscall_64+0xca/0x1c0 [ 32.373567][ T389] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 390] write(5, "79", 2) = 2 [ 32.419131][ T390] FAULT_INJECTION: forcing a failure. [ 32.419131][ T390] name failslab, interval 1, probability 0, space 0, times 0 [ 32.431728][ T390] CPU: 1 PID: 390 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 32.441803][ T390] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 32.451798][ T390] Call Trace: [ 32.454930][ T390] dump_stack+0x1d8/0x241 [ 32.459089][ T390] ? panic+0x896/0x896 [ 32.462995][ T390] ? do_vfs_ioctl+0x742/0x1720 [ 32.467600][ T390] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 32.473256][ T390] should_fail+0x71f/0x880 [ 32.477491][ T390] ? setup_fault_attr+0x3d0/0x3d0 [ 32.482347][ T390] ? make_kgid+0x1f2/0x6f0 [ 32.486604][ T390] ? security_inode_alloc+0x24/0x110 [ 32.491894][ T390] should_failslab+0x5/0x20 [ 32.496234][ T390] kmem_cache_alloc+0x28/0x250 [ 32.500945][ T390] security_inode_alloc+0x24/0x110 [ 32.505874][ T390] inode_init_always+0x655/0x8a0 [ 32.510829][ T390] new_inode_pseudo+0x8f/0x210 [ 32.515417][ T390] new_inode+0x25/0x1d0 [ 32.519650][ T390] ? start_creating+0x15d/0x250 [ 32.524319][ T390] __debugfs_create_file+0xb6/0x400 [ 32.529365][ T390] ? debugfs_create_dir+0x2e7/0x380 [ 32.534472][ T390] bdi_register_va+0x287/0x610 [ 32.539071][ T390] bdi_register+0xd1/0x120 [ 32.543338][ T390] ? __device_add_disk+0x551/0x1220 [ 32.548362][ T390] ? bdi_register_va+0x610/0x610 [ 32.553134][ T390] ? percpu_ref_resurrect+0x113/0x190 [ 32.558344][ T390] bdi_register_owner+0x55/0xf0 [ 32.563027][ T390] __device_add_disk+0x5d1/0x1220 [ 32.567884][ T390] ? device_add_disk+0x30/0x30 [ 32.572483][ T390] ? vsprintf+0x30/0x30 [ 32.576477][ T390] ? __alloc_disk_node+0x459/0x5a0 [ 32.581428][ T390] loop_add+0x573/0x740 [ 32.585596][ T390] loop_control_ioctl+0x448/0x620 [ 32.590452][ T390] ? loop_remove+0xa0/0xa0 [ 32.595056][ T390] ? ptrace_stop+0x6ee/0xa30 [ 32.599486][ T390] ? loop_remove+0xa0/0xa0 [ 32.603728][ T390] do_vfs_ioctl+0x742/0x1720 [ 32.608159][ T390] ? ioctl_preallocate+0x250/0x250 [ 32.613109][ T390] ? check_preemption_disabled+0x153/0x320 [pid 390] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 390] exit_group(0) = ? [pid 390] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=390, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 391 ./strace-static-x86_64: Process 391 attached [pid 391] set_robust_list(0x555555c78660, 24) = 0 [pid 391] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 391] setpgid(0, 0) = 0 [pid 391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 391] write(3, "1000", 4) = 4 [pid 391] close(3) = 0 [pid 391] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 391] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 32.619180][ T390] ? syscall_trace_enter+0x650/0x940 [ 32.624347][ T390] ? do_syscall_64+0x1c0/0x1c0 [ 32.628902][ T390] ? switch_fpu_return+0x1d4/0x410 [ 32.633847][ T390] ? security_file_ioctl+0x7d/0xa0 [ 32.638801][ T390] __x64_sys_ioctl+0xd4/0x110 [ 32.643306][ T390] do_syscall_64+0xca/0x1c0 [ 32.647651][ T390] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 32.653470][ T390] debugfs: out of free dentries, can not create file 'stats' [pid 391] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 391] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 391] write(5, "79", 2) = 2 [ 32.704368][ T391] FAULT_INJECTION: forcing a failure. [ 32.704368][ T391] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 32.717447][ T391] CPU: 1 PID: 391 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 32.727355][ T391] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 32.737367][ T391] Call Trace: [ 32.740501][ T391] dump_stack+0x1d8/0x241 [ 32.744775][ T391] ? panic+0x896/0x896 [ 32.748657][ T391] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 32.754457][ T391] ? stack_trace_save+0x118/0x1c0 [ 32.759325][ T391] ? stack_trace_snprint+0x170/0x170 [ 32.769412][ T391] should_fail+0x71f/0x880 [ 32.773662][ T391] ? setup_fault_attr+0x3d0/0x3d0 [ 32.778520][ T391] ? __kasan_kmalloc+0x1d9/0x210 [ 32.783305][ T391] ? remove_wait_queue+0x120/0x120 [ 32.788268][ T391] ? __kasan_kmalloc+0x171/0x210 [ 32.793107][ T391] __alloc_pages_nodemask+0x1b4/0x840 [ 32.798352][ T391] ? __device_add_disk+0x5d1/0x1220 [ 32.803336][ T391] ? loop_add+0x573/0x740 [ 32.807511][ T391] ? loop_control_ioctl+0x448/0x620 [ 32.812548][ T391] ? do_syscall_64+0xca/0x1c0 [ 32.817067][ T391] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 32.822435][ T391] ? lockref_get+0x184/0x220 [ 32.826892][ T391] __get_free_pages+0xa/0x30 [ 32.831296][ T391] selinux_genfs_get_sid+0x54/0x260 [ 32.836508][ T391] inode_doinit_with_dentry+0x892/0x1050 [ 32.842076][ T391] ? sb_finish_set_opts+0x770/0x770 [ 32.847103][ T391] ? current_time+0x1af/0x2f0 [ 32.851801][ T391] ? atime_needs_update+0x590/0x590 [ 32.856892][ T391] security_d_instantiate+0x97/0xf0 [ 32.862008][ T391] d_instantiate+0x51/0x90 [ 32.866283][ T391] __debugfs_create_file+0x257/0x400 [ 32.871385][ T391] bdi_register_va+0x287/0x610 [ 32.875979][ T391] bdi_register+0xd1/0x120 [ 32.880236][ T391] ? __device_add_disk+0x551/0x1220 [ 32.885281][ T391] ? bdi_register_va+0x610/0x610 [ 32.890037][ T391] ? percpu_ref_resurrect+0x113/0x190 [ 32.895382][ T391] bdi_register_owner+0x55/0xf0 [ 32.900055][ T391] __device_add_disk+0x5d1/0x1220 [ 32.904933][ T391] ? device_add_disk+0x30/0x30 [ 32.909520][ T391] ? vsprintf+0x30/0x30 [ 32.913504][ T391] ? __alloc_disk_node+0x459/0x5a0 [ 32.918456][ T391] loop_add+0x573/0x740 [ 32.922447][ T391] loop_control_ioctl+0x448/0x620 [ 32.927305][ T391] ? loop_remove+0xa0/0xa0 [ 32.931576][ T391] ? ptrace_stop+0x6ee/0xa30 [ 32.935990][ T391] ? loop_remove+0xa0/0xa0 [ 32.940333][ T391] do_vfs_ioctl+0x742/0x1720 [ 32.944790][ T391] ? ioctl_preallocate+0x250/0x250 [ 32.949732][ T391] ? check_preemption_disabled+0x153/0x320 [pid 391] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 391] exit_group(0) = ? [pid 391] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=391, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 393 ./strace-static-x86_64: Process 393 attached [pid 393] set_robust_list(0x555555c78660, 24) = 0 [pid 393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 393] setpgid(0, 0) = 0 [pid 393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 393] write(3, "1000", 4) = 4 [pid 393] close(3) = 0 [pid 393] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 393] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 393] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 393] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [ 32.955346][ T391] ? syscall_trace_enter+0x650/0x940 [ 32.960479][ T391] ? do_syscall_64+0x1c0/0x1c0 [ 32.965068][ T391] ? switch_fpu_return+0x1d4/0x410 [ 32.970051][ T391] ? security_file_ioctl+0x7d/0xa0 [ 32.974959][ T391] __x64_sys_ioctl+0xd4/0x110 [ 32.979585][ T391] do_syscall_64+0xca/0x1c0 [ 32.983928][ T391] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 393] write(5, "79", 2) = 2 [ 33.038950][ T393] FAULT_INJECTION: forcing a failure. [ 33.038950][ T393] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 33.052104][ T393] CPU: 1 PID: 393 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 33.062040][ T393] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 33.072221][ T393] Call Trace: [ 33.075357][ T393] dump_stack+0x1d8/0x241 [ 33.079547][ T393] ? panic+0x896/0x896 [ 33.084560][ T393] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 33.090193][ T393] ? stack_trace_save+0x118/0x1c0 [ 33.095055][ T393] ? stack_trace_snprint+0x170/0x170 [ 33.100181][ T393] should_fail+0x71f/0x880 [ 33.104430][ T393] ? setup_fault_attr+0x3d0/0x3d0 [ 33.109295][ T393] ? __kasan_kmalloc+0x1d9/0x210 [ 33.114056][ T393] ? remove_wait_queue+0x120/0x120 [ 33.119009][ T393] ? __kasan_kmalloc+0x171/0x210 [ 33.123777][ T393] __alloc_pages_nodemask+0x1b4/0x840 [ 33.129182][ T393] ? __device_add_disk+0x5d1/0x1220 [ 33.134195][ T393] ? loop_add+0x573/0x740 [ 33.138478][ T393] ? loop_control_ioctl+0x448/0x620 [ 33.143488][ T393] ? do_syscall_64+0xca/0x1c0 [ 33.148039][ T393] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 33.153462][ T393] ? lockref_get+0x184/0x220 [ 33.157919][ T393] __get_free_pages+0xa/0x30 [ 33.162406][ T393] selinux_genfs_get_sid+0x54/0x260 [ 33.167438][ T393] inode_doinit_with_dentry+0x892/0x1050 [ 33.173000][ T393] ? sb_finish_set_opts+0x770/0x770 [ 33.178826][ T393] ? current_time+0x1af/0x2f0 [ 33.183320][ T393] ? atime_needs_update+0x590/0x590 [ 33.188382][ T393] security_d_instantiate+0x97/0xf0 [ 33.193545][ T393] d_instantiate+0x51/0x90 [ 33.197807][ T393] __debugfs_create_file+0x257/0x400 [ 33.202908][ T393] bdi_register_va+0x287/0x610 [ 33.207519][ T393] bdi_register+0xd1/0x120 [ 33.211843][ T393] ? __device_add_disk+0x551/0x1220 [ 33.216873][ T393] ? bdi_register_va+0x610/0x610 [ 33.221661][ T393] ? percpu_ref_resurrect+0x113/0x190 [ 33.226876][ T393] bdi_register_owner+0x55/0xf0 [ 33.231646][ T393] __device_add_disk+0x5d1/0x1220 [ 33.236504][ T393] ? device_add_disk+0x30/0x30 [ 33.241188][ T393] ? vsprintf+0x30/0x30 [ 33.245169][ T393] ? __alloc_disk_node+0x459/0x5a0 [ 33.250390][ T393] loop_add+0x573/0x740 [ 33.254392][ T393] loop_control_ioctl+0x448/0x620 [ 33.259237][ T393] ? loop_remove+0xa0/0xa0 [ 33.263675][ T393] ? ptrace_stop+0x6ee/0xa30 [ 33.268119][ T393] ? loop_remove+0xa0/0xa0 [ 33.272356][ T393] do_vfs_ioctl+0x742/0x1720 [ 33.276782][ T393] ? ioctl_preallocate+0x250/0x250 [ 33.281809][ T393] ? check_preemption_disabled+0x153/0x320 [pid 393] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 393] exit_group(0) = ? [pid 393] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=393, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 394 ./strace-static-x86_64: Process 394 attached [pid 394] set_robust_list(0x555555c78660, 24) = 0 [pid 394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 394] setpgid(0, 0) = 0 [pid 394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 394] write(3, "1000", 4) = 4 [pid 394] close(3) = 0 [pid 394] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 394] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 394] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 394] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 394] write(5, "79", 2) = 2 [ 33.287535][ T393] ? syscall_trace_enter+0x650/0x940 [ 33.292653][ T393] ? do_syscall_64+0x1c0/0x1c0 [ 33.297257][ T393] ? switch_fpu_return+0x1d4/0x410 [ 33.302199][ T393] ? security_file_ioctl+0x7d/0xa0 [ 33.307154][ T393] __x64_sys_ioctl+0xd4/0x110 [ 33.311689][ T393] do_syscall_64+0xca/0x1c0 [ 33.316001][ T393] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 33.357991][ T394] FAULT_INJECTION: forcing a failure. [ 33.357991][ T394] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 33.371115][ T394] CPU: 0 PID: 394 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 33.380989][ T394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 33.390866][ T394] Call Trace: [ 33.394022][ T394] dump_stack+0x1d8/0x241 [ 33.398301][ T394] ? panic+0x896/0x896 [ 33.402203][ T394] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 33.407874][ T394] ? stack_trace_save+0x118/0x1c0 [ 33.412826][ T394] ? stack_trace_snprint+0x170/0x170 [ 33.417961][ T394] should_fail+0x71f/0x880 [ 33.422219][ T394] ? setup_fault_attr+0x3d0/0x3d0 [ 33.427064][ T394] ? __kasan_kmalloc+0x1d9/0x210 [ 33.431837][ T394] ? remove_wait_queue+0x120/0x120 [ 33.436785][ T394] ? __kasan_kmalloc+0x171/0x210 [ 33.441574][ T394] __alloc_pages_nodemask+0x1b4/0x840 [ 33.446878][ T394] ? __device_add_disk+0x5d1/0x1220 [ 33.451987][ T394] ? loop_add+0x573/0x740 [ 33.456151][ T394] ? loop_control_ioctl+0x448/0x620 [ 33.461182][ T394] ? do_syscall_64+0xca/0x1c0 [ 33.465708][ T394] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 33.471195][ T394] ? lockref_get+0x184/0x220 [ 33.475629][ T394] __get_free_pages+0xa/0x30 [ 33.480043][ T394] selinux_genfs_get_sid+0x54/0x260 [ 33.485868][ T394] inode_doinit_with_dentry+0x892/0x1050 [ 33.491553][ T394] ? sb_finish_set_opts+0x770/0x770 [ 33.496526][ T394] ? current_time+0x1af/0x2f0 [ 33.501240][ T394] ? atime_needs_update+0x590/0x590 [ 33.506569][ T394] security_d_instantiate+0x97/0xf0 [ 33.511588][ T394] d_instantiate+0x51/0x90 [ 33.515820][ T394] __debugfs_create_file+0x257/0x400 [ 33.520948][ T394] bdi_register_va+0x287/0x610 [ 33.525540][ T394] bdi_register+0xd1/0x120 [ 33.529807][ T394] ? __device_add_disk+0x551/0x1220 [ 33.534918][ T394] ? bdi_register_va+0x610/0x610 [ 33.539900][ T394] ? percpu_ref_resurrect+0x113/0x190 [ 33.545311][ T394] bdi_register_owner+0x55/0xf0 [ 33.549992][ T394] __device_add_disk+0x5d1/0x1220 [ 33.555637][ T394] ? device_add_disk+0x30/0x30 [ 33.560244][ T394] ? vsprintf+0x30/0x30 [ 33.564341][ T394] ? __alloc_disk_node+0x459/0x5a0 [ 33.569283][ T394] loop_add+0x573/0x740 [ 33.573273][ T394] loop_control_ioctl+0x448/0x620 [ 33.578127][ T394] ? loop_remove+0xa0/0xa0 [ 33.582382][ T394] ? ptrace_stop+0x6ee/0xa30 [ 33.586808][ T394] ? loop_remove+0xa0/0xa0 [ 33.591146][ T394] do_vfs_ioctl+0x742/0x1720 [ 33.595577][ T394] ? ioctl_preallocate+0x250/0x250 [ 33.600698][ T394] ? check_preemption_disabled+0x153/0x320 [pid 394] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 394] exit_group(0) = ? [pid 394] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=394, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 395 ./strace-static-x86_64: Process 395 attached [pid 395] set_robust_list(0x555555c78660, 24) = 0 [pid 395] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 395] setpgid(0, 0) = 0 [pid 395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 395] write(3, "1000", 4) = 4 [pid 395] close(3) = 0 [pid 395] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 395] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 395] ioctl(4, LOOP_CTL_REMOVE, 0) = -1 EBUSY (Device or resource busy) [pid 395] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 395] write(5, "79", 2) = 2 [pid 395] ioctl(3, LOOP_CTL_ADD, 0) = -1 EEXIST (File exists) [pid 395] exit_group(0) = ? [pid 395] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=395, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 396 ./strace-static-x86_64: Process 396 attached [pid 396] set_robust_list(0x555555c78660, 24) = 0 [pid 396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 396] setpgid(0, 0) = 0 [pid 396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 396] write(3, "1000", 4) = 4 [pid 396] close(3) = 0 [pid 396] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 396] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 33.606421][ T394] ? syscall_trace_enter+0x650/0x940 [ 33.611627][ T394] ? do_syscall_64+0x1c0/0x1c0 [ 33.616229][ T394] ? switch_fpu_return+0x1d4/0x410 [ 33.621262][ T394] ? security_file_ioctl+0x7d/0xa0 [ 33.626221][ T394] __x64_sys_ioctl+0xd4/0x110 [ 33.630723][ T394] do_syscall_64+0xca/0x1c0 [ 33.635059][ T394] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 396] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 396] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 396] write(5, "79", 2) = 2 [ 33.709782][ T396] FAULT_INJECTION: forcing a failure. [ 33.709782][ T396] name failslab, interval 1, probability 0, space 0, times 0 [ 33.722350][ T396] CPU: 1 PID: 396 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 33.732502][ T396] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 33.742486][ T396] Call Trace: [ 33.745601][ T396] dump_stack+0x1d8/0x241 [ 33.749740][ T396] ? panic+0x896/0x896 [ 33.753654][ T396] ? do_vfs_ioctl+0x742/0x1720 [ 33.758348][ T396] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 33.764122][ T396] should_fail+0x71f/0x880 [ 33.768507][ T396] ? setup_fault_attr+0x3d0/0x3d0 [ 33.773433][ T396] ? make_kgid+0x1f2/0x6f0 [ 33.777781][ T396] ? security_inode_alloc+0x24/0x110 [ 33.783010][ T396] should_failslab+0x5/0x20 [ 33.787347][ T396] kmem_cache_alloc+0x28/0x250 [ 33.791928][ T396] security_inode_alloc+0x24/0x110 [ 33.796870][ T396] inode_init_always+0x655/0x8a0 [ 33.802363][ T396] new_inode_pseudo+0x8f/0x210 [ 33.806960][ T396] new_inode+0x25/0x1d0 [ 33.811184][ T396] ? start_creating+0x15d/0x250 [ 33.815934][ T396] __debugfs_create_file+0xb6/0x400 [ 33.821047][ T396] ? debugfs_create_dir+0x2e7/0x380 [ 33.826429][ T396] bdi_register_va+0x287/0x610 [ 33.831127][ T396] bdi_register+0xd1/0x120 [ 33.835459][ T396] ? __device_add_disk+0x551/0x1220 [ 33.840484][ T396] ? bdi_register_va+0x610/0x610 [ 33.845259][ T396] ? percpu_ref_resurrect+0x113/0x190 [ 33.850684][ T396] bdi_register_owner+0x55/0xf0 [ 33.855367][ T396] __device_add_disk+0x5d1/0x1220 [ 33.860236][ T396] ? device_add_disk+0x30/0x30 [ 33.864912][ T396] ? vsprintf+0x30/0x30 [ 33.869011][ T396] ? __alloc_disk_node+0x459/0x5a0 [ 33.873959][ T396] loop_add+0x573/0x740 [ 33.877948][ T396] loop_control_ioctl+0x448/0x620 [ 33.882806][ T396] ? loop_remove+0xa0/0xa0 [ 33.887055][ T396] ? ptrace_stop+0x6ee/0xa30 [ 33.891485][ T396] ? loop_remove+0xa0/0xa0 [ 33.895742][ T396] do_vfs_ioctl+0x742/0x1720 [ 33.900168][ T396] ? ioctl_preallocate+0x250/0x250 [pid 396] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 396] exit_group(0) = ? [pid 396] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=396, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 398 ./strace-static-x86_64: Process 398 attached [pid 398] set_robust_list(0x555555c78660, 24) = 0 [pid 398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 398] setpgid(0, 0) = 0 [pid 398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 398] write(3, "1000", 4) = 4 [pid 398] close(3) = 0 [pid 398] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 398] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 398] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 398] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 398] write(5, "79", 2) = 2 [ 33.905213][ T396] ? check_preemption_disabled+0x153/0x320 [ 33.910833][ T396] ? syscall_trace_enter+0x650/0x940 [ 33.915958][ T396] ? do_syscall_64+0x1c0/0x1c0 [ 33.920553][ T396] ? switch_fpu_return+0x1d4/0x410 [ 33.925502][ T396] ? security_file_ioctl+0x7d/0xa0 [ 33.930450][ T396] __x64_sys_ioctl+0xd4/0x110 [ 33.934965][ T396] do_syscall_64+0xca/0x1c0 [ 33.939314][ T396] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 33.945148][ T396] debugfs: out of free dentries, can not create file 'stats' [ 33.977589][ T398] FAULT_INJECTION: forcing a failure. [ 33.977589][ T398] name failslab, interval 1, probability 0, space 0, times 0 [ 33.990189][ T398] CPU: 0 PID: 398 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 34.000228][ T398] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 34.010207][ T398] Call Trace: [ 34.013521][ T398] dump_stack+0x1d8/0x241 [ 34.017666][ T398] ? panic+0x896/0x896 [ 34.021568][ T398] ? do_vfs_ioctl+0x742/0x1720 [ 34.026169][ T398] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 34.031826][ T398] should_fail+0x71f/0x880 [ 34.036064][ T398] ? setup_fault_attr+0x3d0/0x3d0 [ 34.040922][ T398] ? make_kgid+0x1f2/0x6f0 [ 34.045188][ T398] ? security_inode_alloc+0x24/0x110 [ 34.050305][ T398] should_failslab+0x5/0x20 [ 34.054635][ T398] kmem_cache_alloc+0x28/0x250 [ 34.059242][ T398] security_inode_alloc+0x24/0x110 [ 34.064339][ T398] inode_init_always+0x655/0x8a0 [ 34.069142][ T398] new_inode_pseudo+0x8f/0x210 [ 34.073739][ T398] new_inode+0x25/0x1d0 [ 34.077800][ T398] ? start_creating+0x15d/0x250 [ 34.082572][ T398] __debugfs_create_file+0xb6/0x400 [ 34.087601][ T398] ? debugfs_create_dir+0x2e7/0x380 [ 34.092747][ T398] bdi_register_va+0x287/0x610 [ 34.097345][ T398] bdi_register+0xd1/0x120 [ 34.101867][ T398] ? __device_add_disk+0x551/0x1220 [ 34.106890][ T398] ? bdi_register_va+0x610/0x610 [ 34.111668][ T398] ? percpu_ref_resurrect+0x113/0x190 [ 34.116875][ T398] bdi_register_owner+0x55/0xf0 [ 34.121708][ T398] __device_add_disk+0x5d1/0x1220 [ 34.126567][ T398] ? device_add_disk+0x30/0x30 [ 34.131165][ T398] ? vsprintf+0x30/0x30 [ 34.135150][ T398] ? __alloc_disk_node+0x459/0x5a0 [ 34.140195][ T398] loop_add+0x573/0x740 [ 34.144189][ T398] loop_control_ioctl+0x448/0x620 [ 34.149213][ T398] ? loop_remove+0xa0/0xa0 [ 34.153568][ T398] ? ptrace_stop+0x6ee/0xa30 [ 34.157992][ T398] ? loop_remove+0xa0/0xa0 [ 34.162243][ T398] do_vfs_ioctl+0x742/0x1720 [ 34.166673][ T398] ? ioctl_preallocate+0x250/0x250 [ 34.171617][ T398] ? check_preemption_disabled+0x153/0x320 [pid 398] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 398] exit_group(0) = ? [pid 398] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=398, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 399 ./strace-static-x86_64: Process 399 attached [pid 399] set_robust_list(0x555555c78660, 24) = 0 [pid 399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 399] setpgid(0, 0) = 0 [pid 399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 399] write(3, "1000", 4) = 4 [pid 399] close(3) = 0 [pid 399] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 399] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 34.177256][ T398] ? syscall_trace_enter+0x650/0x940 [ 34.182379][ T398] ? do_syscall_64+0x1c0/0x1c0 [ 34.186993][ T398] ? switch_fpu_return+0x1d4/0x410 [ 34.191934][ T398] ? security_file_ioctl+0x7d/0xa0 [ 34.198538][ T398] __x64_sys_ioctl+0xd4/0x110 [ 34.203051][ T398] do_syscall_64+0xca/0x1c0 [ 34.207482][ T398] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 34.214199][ T398] debugfs: out of free dentries, can not create file 'stats' [pid 399] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 399] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 399] write(5, "79", 2) = 2 [ 34.288980][ T399] FAULT_INJECTION: forcing a failure. [ 34.288980][ T399] name failslab, interval 1, probability 0, space 0, times 0 [ 34.301529][ T399] CPU: 1 PID: 399 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 34.311606][ T399] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 34.321488][ T399] Call Trace: [ 34.324739][ T399] dump_stack+0x1d8/0x241 [ 34.328898][ T399] ? panic+0x896/0x896 [ 34.332828][ T399] ? do_vfs_ioctl+0x742/0x1720 [ 34.337500][ T399] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 34.343133][ T399] should_fail+0x71f/0x880 [ 34.347574][ T399] ? setup_fault_attr+0x3d0/0x3d0 [ 34.352341][ T399] ? make_kgid+0x1f2/0x6f0 [ 34.356651][ T399] ? security_inode_alloc+0x24/0x110 [ 34.361724][ T399] should_failslab+0x5/0x20 [ 34.366182][ T399] kmem_cache_alloc+0x28/0x250 [ 34.371722][ T399] security_inode_alloc+0x24/0x110 [ 34.376675][ T399] inode_init_always+0x655/0x8a0 [ 34.381439][ T399] new_inode_pseudo+0x8f/0x210 [ 34.386062][ T399] new_inode+0x25/0x1d0 [ 34.390044][ T399] ? start_creating+0x15d/0x250 [ 34.394729][ T399] __debugfs_create_file+0xb6/0x400 [ 34.399774][ T399] ? debugfs_create_dir+0x2e7/0x380 [ 34.404799][ T399] bdi_register_va+0x287/0x610 [ 34.409403][ T399] bdi_register+0xd1/0x120 [ 34.413643][ T399] ? __device_add_disk+0x551/0x1220 [ 34.418682][ T399] ? bdi_register_va+0x610/0x610 [ 34.423480][ T399] ? percpu_ref_resurrect+0x113/0x190 [ 34.428669][ T399] bdi_register_owner+0x55/0xf0 [ 34.433341][ T399] __device_add_disk+0x5d1/0x1220 [ 34.438208][ T399] ? device_add_disk+0x30/0x30 [ 34.442812][ T399] ? vsprintf+0x30/0x30 [ 34.446949][ T399] ? __alloc_disk_node+0x459/0x5a0 [ 34.451893][ T399] loop_add+0x573/0x740 [ 34.455888][ T399] loop_control_ioctl+0x448/0x620 [ 34.460934][ T399] ? loop_remove+0xa0/0xa0 [ 34.465256][ T399] ? ptrace_stop+0x6ee/0xa30 [ 34.469659][ T399] ? loop_remove+0xa0/0xa0 [ 34.473997][ T399] do_vfs_ioctl+0x742/0x1720 [ 34.478425][ T399] ? ioctl_preallocate+0x250/0x250 [ 34.483378][ T399] ? check_preemption_disabled+0x153/0x320 [pid 399] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 399] exit_group(0) = ? [pid 399] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=399, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 400 ./strace-static-x86_64: Process 400 attached [pid 400] set_robust_list(0x555555c78660, 24) = 0 [pid 400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 400] setpgid(0, 0) = 0 [pid 400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 400] write(3, "1000", 4) = 4 [pid 400] close(3) = 0 [pid 400] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 400] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 400] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 400] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 400] write(5, "79", 2) = 2 [ 34.489012][ T399] ? syscall_trace_enter+0x650/0x940 [ 34.494132][ T399] ? do_syscall_64+0x1c0/0x1c0 [ 34.498739][ T399] ? switch_fpu_return+0x1d4/0x410 [ 34.503911][ T399] ? security_file_ioctl+0x7d/0xa0 [ 34.508845][ T399] __x64_sys_ioctl+0xd4/0x110 [ 34.513444][ T399] do_syscall_64+0xca/0x1c0 [ 34.517795][ T399] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 34.523610][ T399] debugfs: out of free dentries, can not create file 'stats' [ 34.567590][ T400] FAULT_INJECTION: forcing a failure. [ 34.567590][ T400] name failslab, interval 1, probability 0, space 0, times 0 [ 34.580382][ T400] CPU: 0 PID: 400 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 34.590349][ T400] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 34.600380][ T400] Call Trace: [ 34.603611][ T400] dump_stack+0x1d8/0x241 [ 34.607874][ T400] ? panic+0x896/0x896 [ 34.611992][ T400] ? check_preemption_disabled+0x9f/0x320 [ 34.617484][ T400] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 34.623126][ T400] ? _raw_spin_lock_bh+0xa4/0x1b0 [ 34.627985][ T400] ? debug_smp_processor_id+0x20/0x20 [ 34.633185][ T400] ? __debugfs_create_file+0x367/0x400 [ 34.638491][ T400] should_fail+0x71f/0x880 [ 34.642975][ T400] ? bdi_register_va+0x47d/0x610 [ 34.650034][ T400] ? setup_fault_attr+0x3d0/0x3d0 [ 34.655270][ T400] ? bdi_register+0xd1/0x120 [ 34.659775][ T400] ? __device_add_disk+0x551/0x1220 [ 34.665012][ T400] ? kobj_map+0x65/0x5a0 [ 34.669091][ T400] should_failslab+0x5/0x20 [ 34.673557][ T400] __kmalloc+0x51/0x2e0 [ 34.677800][ T400] kobj_map+0x65/0x5a0 [ 34.681694][ T400] ? disk_check_events+0x600/0x600 [ 34.686647][ T400] ? exact_match+0x20/0x20 [ 34.691027][ T400] __device_add_disk+0x65a/0x1220 [ 34.696906][ T400] ? device_add_disk+0x30/0x30 [ 34.701931][ T400] ? vsprintf+0x30/0x30 [ 34.706100][ T400] ? __alloc_disk_node+0x459/0x5a0 [ 34.711291][ T400] loop_add+0x573/0x740 [ 34.715357][ T400] loop_control_ioctl+0x448/0x620 [ 34.720424][ T400] ? loop_remove+0xa0/0xa0 [ 34.724854][ T400] ? ptrace_stop+0x6ee/0xa30 [ 34.729400][ T400] ? loop_remove+0xa0/0xa0 [ 34.733647][ T400] do_vfs_ioctl+0x742/0x1720 [ 34.738076][ T400] ? ioctl_preallocate+0x250/0x250 [ 34.743015][ T400] ? check_preemption_disabled+0x153/0x320 [ 34.748694][ T400] ? syscall_trace_enter+0x650/0x940 [ 34.753864][ T400] ? do_syscall_64+0x1c0/0x1c0 [ 34.758465][ T400] ? switch_fpu_return+0x1d4/0x410 [ 34.763420][ T400] ? security_file_ioctl+0x7d/0xa0 [pid 400] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 400] exit_group(0) = ? [pid 400] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=400, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 402 ./strace-static-x86_64: Process 402 attached [pid 402] set_robust_list(0x555555c78660, 24) = 0 [pid 402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 402] setpgid(0, 0) = 0 [pid 402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 402] write(3, "1000", 4) = 4 [pid 402] close(3) = 0 [pid 402] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 402] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 34.768463][ T400] __x64_sys_ioctl+0xd4/0x110 [ 34.773040][ T400] do_syscall_64+0xca/0x1c0 [ 34.777380][ T400] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [pid 402] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 402] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 402] write(5, "79", 2) = 2 [ 34.837905][ T402] FAULT_INJECTION: forcing a failure. [ 34.837905][ T402] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 34.851611][ T402] CPU: 1 PID: 402 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 34.861563][ T402] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 34.871477][ T402] Call Trace: [ 34.874596][ T402] dump_stack+0x1d8/0x241 [ 34.878848][ T402] ? panic+0x896/0x896 [ 34.882759][ T402] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 34.888481][ T402] ? stack_trace_save+0x118/0x1c0 [ 34.893341][ T402] ? stack_trace_snprint+0x170/0x170 [ 34.898493][ T402] should_fail+0x71f/0x880 [ 34.902732][ T402] ? setup_fault_attr+0x3d0/0x3d0 [ 34.907580][ T402] ? __kasan_kmalloc+0x1d9/0x210 [ 34.912356][ T402] ? remove_wait_queue+0x120/0x120 [ 34.917291][ T402] ? __kasan_kmalloc+0x171/0x210 [ 34.922065][ T402] __alloc_pages_nodemask+0x1b4/0x840 [ 34.927271][ T402] ? __device_add_disk+0x5d1/0x1220 [ 34.932309][ T402] ? loop_add+0x573/0x740 [ 34.936467][ T402] ? loop_control_ioctl+0x448/0x620 [ 34.941507][ T402] ? do_syscall_64+0xca/0x1c0 [ 34.946030][ T402] ? gfp_pfmemalloc_allowed+0x120/0x120 [ 34.951487][ T402] ? lockref_get+0x184/0x220 [ 34.955915][ T402] __get_free_pages+0xa/0x30 [ 34.960341][ T402] selinux_genfs_get_sid+0x54/0x260 [ 34.965373][ T402] inode_doinit_with_dentry+0x892/0x1050 [ 34.970851][ T402] ? sb_finish_set_opts+0x770/0x770 [ 34.975872][ T402] ? current_time+0x1af/0x2f0 [ 34.980382][ T402] ? atime_needs_update+0x590/0x590 [ 34.985447][ T402] security_d_instantiate+0x97/0xf0 [ 34.990457][ T402] d_instantiate+0x51/0x90 [ 34.994718][ T402] __debugfs_create_file+0x257/0x400 [ 34.999836][ T402] bdi_register_va+0x287/0x610 [ 35.004428][ T402] bdi_register+0xd1/0x120 [ 35.008680][ T402] ? __device_add_disk+0x551/0x1220 [ 35.013723][ T402] ? bdi_register_va+0x610/0x610 [ 35.018489][ T402] ? percpu_ref_resurrect+0x113/0x190 [ 35.023698][ T402] bdi_register_owner+0x55/0xf0 [ 35.028383][ T402] __device_add_disk+0x5d1/0x1220 [ 35.033244][ T402] ? device_add_disk+0x30/0x30 [ 35.037838][ T402] ? vsprintf+0x30/0x30 [ 35.041835][ T402] ? __alloc_disk_node+0x459/0x5a0 [ 35.046792][ T402] loop_add+0x573/0x740 [ 35.050773][ T402] loop_control_ioctl+0x448/0x620 [ 35.055805][ T402] ? loop_remove+0xa0/0xa0 [ 35.060074][ T402] ? ptrace_stop+0x6ee/0xa30 [ 35.064665][ T402] ? loop_remove+0xa0/0xa0 [ 35.068910][ T402] do_vfs_ioctl+0x742/0x1720 [ 35.073342][ T402] ? ioctl_preallocate+0x250/0x250 [ 35.078378][ T402] ? check_preemption_disabled+0x153/0x320 [pid 402] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 402] exit_group(0) = ? [pid 402] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=402, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555c78650) = 403 ./strace-static-x86_64: Process 403 attached [pid 403] set_robust_list(0x555555c78660, 24) = 0 [pid 403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 403] setpgid(0, 0) = 0 [pid 403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 403] write(3, "1000", 4) = 4 [pid 403] close(3) = 0 [pid 403] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 403] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [pid 403] ioctl(4, LOOP_CTL_REMOVE, 0) = 0 [pid 403] openat(AT_FDCWD, "/proc/thread-self/fail-nth", O_RDWR) = 5 [pid 403] write(5, "79", 2) = 2 [ 35.084028][ T402] ? syscall_trace_enter+0x650/0x940 [ 35.089154][ T402] ? do_syscall_64+0x1c0/0x1c0 [ 35.093762][ T402] ? switch_fpu_return+0x1d4/0x410 [ 35.098886][ T402] ? security_file_ioctl+0x7d/0xa0 [ 35.103838][ T402] __x64_sys_ioctl+0xd4/0x110 [ 35.108438][ T402] do_syscall_64+0xca/0x1c0 [ 35.112900][ T402] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 35.168941][ T403] FAULT_INJECTION: forcing a failure. [ 35.168941][ T403] name failslab, interval 1, probability 0, space 0, times 0 [ 35.182244][ T403] CPU: 1 PID: 403 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 35.192196][ T403] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 35.202213][ T403] Call Trace: [ 35.205308][ T403] dump_stack+0x1d8/0x241 [ 35.209469][ T403] ? panic+0x896/0x896 [ 35.213548][ T403] ? nf_ct_l4proto_log_invalid+0x258/0x258 [ 35.219199][ T403] ? __kasan_kmalloc+0x1d9/0x210 [ 35.224560][ T403] ? loop_add+0x573/0x740 [ 35.228658][ T403] ? __kasan_kmalloc+0x171/0x210 [ 35.233435][ T403] ? kobj_map+0x65/0x5a0 [ 35.237527][ T403] ? __device_add_disk+0x65a/0x1220 [ 35.242546][ T403] should_fail+0x71f/0x880 [ 35.246821][ T403] ? setup_fault_attr+0x3d0/0x3d0 [ 35.251659][ T403] ? kobject_set_name_vargs+0x5d/0x110 [ 35.256946][ T403] should_failslab+0x5/0x20 [ 35.261284][ T403] __kmalloc_track_caller+0x4f/0x2b0 [ 35.266478][ T403] kstrdup_const+0x51/0x90 [ 35.270665][ T403] kobject_set_name_vargs+0x5d/0x110 [ 35.275788][ T403] dev_set_name+0xd1/0x120 [ 35.280035][ T403] ? get_device+0x30/0x30 [ 35.284232][ T403] ? kobj_map+0x567/0x5a0 [ 35.288461][ T403] __device_add_disk+0x6de/0x1220 [ 35.293311][ T403] ? device_add_disk+0x30/0x30 [ 35.297916][ T403] ? __alloc_disk_node+0x459/0x5a0 [ 35.302860][ T403] loop_add+0x573/0x740 [ 35.306880][ T403] loop_control_ioctl+0x448/0x620 [ 35.311715][ T403] ? loop_remove+0xa0/0xa0 [ 35.315969][ T403] ? ptrace_stop+0x6ee/0xa30 [ 35.320388][ T403] ? loop_remove+0xa0/0xa0 [ 35.324641][ T403] do_vfs_ioctl+0x742/0x1720 [ 35.329275][ T403] ? ioctl_preallocate+0x250/0x250 [ 35.334221][ T403] ? check_preemption_disabled+0x153/0x320 [ 35.339955][ T403] ? syscall_trace_enter+0x650/0x940 [ 35.345084][ T403] ? do_syscall_64+0x1c0/0x1c0 [ 35.349673][ T403] ? switch_fpu_return+0x1d4/0x410 [ 35.354621][ T403] ? security_file_ioctl+0x7d/0xa0 [ 35.359562][ T403] __x64_sys_ioctl+0xd4/0x110 [ 35.364083][ T403] do_syscall_64+0xca/0x1c0 [ 35.368663][ T403] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 35.376133][ T403] kobject_add_internal failed for queue (error: -2 parent: (null)) [ 35.383897][ T403] ------------[ cut here ]------------ [ 35.389220][ T403] WARNING: CPU: 0 PID: 403 at fs/sysfs/file.c:328 sysfs_create_files+0x325/0x470 [ 35.398142][ T403] Modules linked in: [ 35.401886][ T403] CPU: 0 PID: 403 Comm: syz-executor638 Not tainted 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 35.411866][ T403] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 35.422469][ T403] RIP: 0010:sysfs_create_files+0x325/0x470 [ 35.428279][ T403] Code: c1 03 38 c1 0f 8c b7 fe ff ff 48 8d 7c 24 70 e8 71 11 d6 ff e9 a8 fe ff ff e8 37 51 a6 ff 31 db e9 ef 00 00 00 e8 2b 51 a6 ff <0f> 0b bb ea ff ff ff 4c 8b 74 24 08 eb 17 85 db 0f 84 cf 00 00 00 [ 35.447717][ T403] RSP: 0018:ffff8881ef107940 EFLAGS: 00010293 [ 35.453614][ T403] RAX: ffffffff81bde618 RBX: ffff8881ef6a00a0 RCX: ffff8881f36cee40 [ 35.461515][ T403] RDX: 0000000000000000 RSI: ffffffff86064e00 RDI: ffff8881ef6a0070 [ 35.470737][ T403] RBP: ffff8881ef107a10 R08: ffffffff8449b770 R09: ffffed103e0b2470 [ 35.478754][ T403] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 35.486563][ T403] R13: ffffffff84f97dc0 R14: dffffc0000000000 R15: ffff8881ef6a0070 [ 35.494541][ T403] FS: 0000555555c78380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 35.503455][ T403] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.509863][ T403] CR2: 00007f919cf791d0 CR3: 00000001f31e4000 CR4: 00000000003406b0 [ 35.518128][ T403] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.526014][ T403] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.533822][ T403] Call Trace: [ 35.536952][ T403] ? __warn+0x162/0x250 [ 35.540941][ T403] ? report_bug+0x3a1/0x4e0 [ 35.545391][ T403] ? sysfs_create_files+0x325/0x470 [ 35.550430][ T403] ? sysfs_create_files+0x325/0x470 [ 35.555454][ T403] ? do_invalid_op+0x6e/0x110 [ 35.559970][ T403] ? invalid_op+0x1e/0x30 [ 35.564262][ T403] ? kobject_get+0xc0/0x110 [ 35.568696][ T403] ? sysfs_create_files+0x458/0x470 [ 35.573736][ T403] ? sysfs_create_files+0x325/0x470 [ 35.578769][ T403] ? sysfs_create_file_ns+0x2a0/0x2a0 [ 35.583975][ T403] ? kobject_get+0xc9/0x110 [ 35.588326][ T403] __device_add_disk+0x949/0x1220 [ 35.593207][ T403] ? device_add_disk+0x30/0x30 [ 35.597771][ T403] ? __alloc_disk_node+0x459/0x5a0 [ 35.602736][ T403] loop_add+0x573/0x740 [ 35.606718][ T403] loop_control_ioctl+0x448/0x620 [ 35.611756][ T403] ? loop_remove+0xa0/0xa0 [ 35.616044][ T403] ? ptrace_stop+0x6ee/0xa30 [ 35.620434][ T403] ? loop_remove+0xa0/0xa0 [ 35.624856][ T403] do_vfs_ioctl+0x742/0x1720 [ 35.629274][ T403] ? ioctl_preallocate+0x250/0x250 [ 35.634213][ T403] ? check_preemption_disabled+0x153/0x320 [ 35.639852][ T403] ? syscall_trace_enter+0x650/0x940 [ 35.644993][ T403] ? do_syscall_64+0x1c0/0x1c0 [ 35.649703][ T403] ? switch_fpu_return+0x1d4/0x410 [ 35.654837][ T403] ? security_file_ioctl+0x7d/0xa0 [ 35.660212][ T403] __x64_sys_ioctl+0xd4/0x110 [ 35.664708][ T403] do_syscall_64+0xca/0x1c0 [ 35.669044][ T403] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 35.674769][ T403] ---[ end trace 75ce84ed7747bed2 ]--- [ 35.680466][ T403] ------------[ cut here ]------------ [ 35.686021][ T403] kernfs: can not remove 'events', no directory [ 35.692133][ T403] WARNING: CPU: 0 PID: 403 at fs/kernfs/dir.c:1511 kernfs_remove_by_name_ns+0xb1/0x100 [ 35.701525][ T403] Modules linked in: [ 35.705264][ T403] CPU: 0 PID: 403 Comm: syz-executor638 Tainted: G W 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 35.716621][ T403] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 35.726523][ T403] RIP: 0010:kernfs_remove_by_name_ns+0xb1/0x100 [ 35.732601][ T403] Code: ff 03 48 89 df e8 ff ef ff ff 48 89 df e8 67 ae ff ff 31 db eb 27 e8 ce ae a6 ff 48 c7 c7 40 8d e5 84 4c 89 fe e8 9f 69 7d ff <0f> 0b bb fe ff ff ff eb 16 e8 b1 ae a6 ff bb fe ff ff ff 48 c7 c7 [ 35.752312][ T403] RSP: 0018:ffff8881ef107918 EFLAGS: 00010246 [ 35.758202][ T403] RAX: 9fd08432922d6600 RBX: 0000000000000000 RCX: ffff8881f36cee40 [ 35.766110][ T403] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 35.773920][ T403] RBP: ffff8881ef107a10 R08: ffffffff814d59f2 R09: ffffed103edc5262 [ 35.781729][ T403] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 35.789544][ T403] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff84f97e80 [ 35.797355][ T403] FS: 0000555555c78380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 35.806118][ T403] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 35.812720][ T403] CR2: 00007f919cf791d0 CR3: 00000001f31e4000 CR4: 00000000003406b0 [ 35.820527][ T403] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.828351][ T403] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.836148][ T403] Call Trace: [ 35.839371][ T403] ? __warn+0x162/0x250 [ 35.843366][ T403] ? report_bug+0x3a1/0x4e0 [ 35.847696][ T403] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 35.853166][ T403] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 35.858640][ T403] ? do_invalid_op+0x6e/0x110 [ 35.863154][ T403] ? invalid_op+0x1e/0x30 [ 35.867327][ T403] ? wake_up_klogd+0xb2/0xf0 [ 35.871746][ T403] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 35.877216][ T403] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 35.882807][ T403] sysfs_create_files+0x3de/0x470 [ 35.887666][ T403] ? sysfs_create_file_ns+0x2a0/0x2a0 [ 35.892868][ T403] ? kobject_get+0xc9/0x110 [ 35.897212][ T403] __device_add_disk+0x949/0x1220 [ 35.902067][ T403] ? device_add_disk+0x30/0x30 [ 35.906772][ T403] ? __alloc_disk_node+0x459/0x5a0 [ 35.911753][ T403] loop_add+0x573/0x740 [ 35.915719][ T403] loop_control_ioctl+0x448/0x620 [ 35.920637][ T403] ? loop_remove+0xa0/0xa0 [ 35.924836][ T403] ? ptrace_stop+0x6ee/0xa30 [ 35.929257][ T403] ? loop_remove+0xa0/0xa0 [ 35.933499][ T403] do_vfs_ioctl+0x742/0x1720 [ 35.937938][ T403] ? ioctl_preallocate+0x250/0x250 [ 35.942878][ T403] ? check_preemption_disabled+0x153/0x320 [ 35.948518][ T403] ? syscall_trace_enter+0x650/0x940 [ 35.953635][ T403] ? do_syscall_64+0x1c0/0x1c0 [ 35.958242][ T403] ? switch_fpu_return+0x1d4/0x410 [ 35.963199][ T403] ? security_file_ioctl+0x7d/0xa0 [pid 403] ioctl(3, LOOP_CTL_ADD, 0) = 0 [pid 403] exit_group(0) = ? [pid 403] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=403, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 405 attached , child_tidptr=0x555555c78650) = 405 [pid 405] set_robust_list(0x555555c78660, 24) = 0 [pid 405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 405] setpgid(0, 0) = 0 [pid 405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 405] write(3, "1000", 4) = 4 [pid 405] close(3) = 0 [pid 405] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 3 [pid 405] openat(AT_FDCWD, "/dev/loop-control", O_RDONLY) = 4 [ 35.968266][ T403] __x64_sys_ioctl+0xd4/0x110 [ 35.972886][ T403] do_syscall_64+0xca/0x1c0 [ 35.977202][ T403] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 35.982913][ T403] ---[ end trace 75ce84ed7747bed3 ]--- [ 35.988453][ T403] loop0: failed to create sysfs files for events [ 36.003740][ T405] ------------[ cut here ]------------ [ 36.009146][ T405] kernfs: can not remove 'events', no directory [ 36.015282][ T405] WARNING: CPU: 0 PID: 405 at fs/kernfs/dir.c:1511 kernfs_remove_by_name_ns+0xb1/0x100 [ 36.024729][ T405] Modules linked in: [ 36.028459][ T405] CPU: 0 PID: 405 Comm: syz-executor638 Tainted: G W 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 36.039898][ T405] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 36.050758][ T405] RIP: 0010:kernfs_remove_by_name_ns+0xb1/0x100 [ 36.056824][ T405] Code: ff 03 48 89 df e8 ff ef ff ff 48 89 df e8 67 ae ff ff 31 db eb 27 e8 ce ae a6 ff 48 c7 c7 40 8d e5 84 4c 89 fe e8 9f 69 7d ff <0f> 0b bb fe ff ff ff eb 16 e8 b1 ae a6 ff bb fe ff ff ff 48 c7 c7 [ 36.076588][ T405] RSP: 0018:ffff8881e07b7a38 EFLAGS: 00010246 [ 36.082478][ T405] RAX: 63101ec5e9fc4700 RBX: 0000000000000000 RCX: ffff8881f36c9f80 [ 36.090389][ T405] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 36.098277][ T405] RBP: ffffffff86064e00 R08: ffffffff814d59f2 R09: 0000000000000003 [ 36.106177][ T405] R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000000 [ 36.114343][ T405] R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff84f97e80 [ 36.122154][ T405] FS: 0000555555c78380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 36.131047][ T405] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.137455][ T405] CR2: 00007f919cf760d0 CR3: 00000001f31e4000 CR4: 00000000003406b0 [ 36.145568][ T405] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.153369][ T405] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.161646][ T405] Call Trace: [ 36.164775][ T405] ? __warn+0x162/0x250 [ 36.168848][ T405] ? report_bug+0x3a1/0x4e0 [ 36.173307][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.178857][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.184460][ T405] ? do_invalid_op+0x6e/0x110 [ 36.188971][ T405] ? invalid_op+0x1e/0x30 [ 36.193128][ T405] ? wake_up_klogd+0xb2/0xf0 [ 36.197649][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.203263][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.208889][ T405] sysfs_remove_files+0x91/0xe0 [ 36.213561][ T405] del_gendisk+0x26e/0xc30 [ 36.217807][ T405] ? avc_flush+0x1f0/0x1f0 [ 36.222079][ T405] ? device_add_disk_no_queue_reg+0x20/0x20 [ 36.227791][ T405] ? delete_node+0x706/0x780 [ 36.232220][ T405] loop_remove+0x42/0xa0 [ 36.236302][ T405] loop_control_ioctl+0x564/0x620 [ 36.241451][ T405] ? loop_remove+0xa0/0xa0 [ 36.245715][ T405] ? ptrace_stop+0x6ee/0xa30 [ 36.250130][ T405] ? loop_remove+0xa0/0xa0 [ 36.254475][ T405] do_vfs_ioctl+0x742/0x1720 [ 36.258915][ T405] ? ioctl_preallocate+0x250/0x250 [ 36.263953][ T405] ? check_preemption_disabled+0x153/0x320 [ 36.269679][ T405] ? syscall_trace_enter+0x650/0x940 [ 36.274998][ T405] ? do_syscall_64+0x1c0/0x1c0 [ 36.279565][ T405] ? switch_fpu_return+0x1d4/0x410 [ 36.284516][ T405] ? security_file_ioctl+0x7d/0xa0 [ 36.289459][ T405] __x64_sys_ioctl+0xd4/0x110 [ 36.294222][ T405] do_syscall_64+0xca/0x1c0 [ 36.298559][ T405] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 36.304379][ T405] ---[ end trace 75ce84ed7747bed4 ]--- [ 36.309850][ T405] ------------[ cut here ]------------ [ 36.315338][ T405] kernfs: can not remove 'events_async', no directory [ 36.322024][ T405] WARNING: CPU: 0 PID: 405 at fs/kernfs/dir.c:1511 kernfs_remove_by_name_ns+0xb1/0x100 [ 36.331530][ T405] Modules linked in: [ 36.335409][ T405] CPU: 0 PID: 405 Comm: syz-executor638 Tainted: G W 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 36.346904][ T405] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 36.356920][ T405] RIP: 0010:kernfs_remove_by_name_ns+0xb1/0x100 [ 36.362984][ T405] Code: ff 03 48 89 df e8 ff ef ff ff 48 89 df e8 67 ae ff ff 31 db eb 27 e8 ce ae a6 ff 48 c7 c7 40 8d e5 84 4c 89 fe e8 9f 69 7d ff <0f> 0b bb fe ff ff ff eb 16 e8 b1 ae a6 ff bb fe ff ff ff 48 c7 c7 [ 36.382427][ T405] RSP: 0018:ffff8881e07b7a38 EFLAGS: 00010246 [ 36.388450][ T405] RAX: 63101ec5e9fc4700 RBX: 0000000000000000 RCX: ffff8881f36c9f80 [ 36.396258][ T405] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 36.404078][ T405] RBP: ffffffff86064e00 R08: ffffffff814d59f2 R09: ffffed103edc5262 [ 36.412065][ T405] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 36.419885][ T405] R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff84f97f20 [ 36.427950][ T405] FS: 0000555555c78380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 36.436911][ T405] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.443329][ T405] CR2: 00007f919cf760d0 CR3: 00000001f31e4000 CR4: 00000000003406b0 [ 36.451153][ T405] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.459048][ T405] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.466854][ T405] Call Trace: [ 36.470116][ T405] ? __warn+0x162/0x250 [ 36.474104][ T405] ? report_bug+0x3a1/0x4e0 [ 36.478446][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.483919][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.489388][ T405] ? do_invalid_op+0x6e/0x110 [ 36.493890][ T405] ? invalid_op+0x1e/0x30 [ 36.498055][ T405] ? wake_up_klogd+0xb2/0xf0 [ 36.502482][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.507987][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.513419][ T405] sysfs_remove_files+0x91/0xe0 [ 36.518374][ T405] del_gendisk+0x26e/0xc30 [ 36.522617][ T405] ? avc_flush+0x1f0/0x1f0 [ 36.526871][ T405] ? device_add_disk_no_queue_reg+0x20/0x20 [ 36.532598][ T405] ? delete_node+0x706/0x780 [ 36.537026][ T405] loop_remove+0x42/0xa0 [ 36.541110][ T405] loop_control_ioctl+0x564/0x620 [ 36.545979][ T405] ? loop_remove+0xa0/0xa0 [ 36.550218][ T405] ? ptrace_stop+0x6ee/0xa30 [ 36.554642][ T405] ? loop_remove+0xa0/0xa0 [ 36.558917][ T405] do_vfs_ioctl+0x742/0x1720 [ 36.563325][ T405] ? ioctl_preallocate+0x250/0x250 [ 36.568270][ T405] ? check_preemption_disabled+0x153/0x320 [ 36.573911][ T405] ? syscall_trace_enter+0x650/0x940 [ 36.579032][ T405] ? do_syscall_64+0x1c0/0x1c0 [ 36.583716][ T405] ? switch_fpu_return+0x1d4/0x410 [ 36.588671][ T405] ? security_file_ioctl+0x7d/0xa0 [ 36.593613][ T405] __x64_sys_ioctl+0xd4/0x110 [ 36.598125][ T405] do_syscall_64+0xca/0x1c0 [ 36.602462][ T405] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 36.608192][ T405] ---[ end trace 75ce84ed7747bed5 ]--- [ 36.613781][ T405] ------------[ cut here ]------------ [ 36.619161][ T405] kernfs: can not remove 'events_poll_msecs', no directory [ 36.626261][ T405] WARNING: CPU: 0 PID: 405 at fs/kernfs/dir.c:1511 kernfs_remove_by_name_ns+0xb1/0x100 [ 36.635619][ T405] Modules linked in: [ 36.639361][ T405] CPU: 0 PID: 405 Comm: syz-executor638 Tainted: G W 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 36.650824][ T405] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 36.660810][ T405] RIP: 0010:kernfs_remove_by_name_ns+0xb1/0x100 [ 36.666867][ T405] Code: ff 03 48 89 df e8 ff ef ff ff 48 89 df e8 67 ae ff ff 31 db eb 27 e8 ce ae a6 ff 48 c7 c7 40 8d e5 84 4c 89 fe e8 9f 69 7d ff <0f> 0b bb fe ff ff ff eb 16 e8 b1 ae a6 ff bb fe ff ff ff 48 c7 c7 [ 36.686331][ T405] RSP: 0018:ffff8881e07b7a38 EFLAGS: 00010246 [ 36.692318][ T405] RAX: 63101ec5e9fc4700 RBX: 0000000000000000 RCX: ffff8881f36c9f80 [ 36.700112][ T405] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 36.708006][ T405] RBP: ffffffff86064e00 R08: ffffffff814d59f2 R09: ffffed103edca9b8 [ 36.715811][ T405] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 36.723719][ T405] R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff84f97f40 [ 36.731526][ T405] FS: 0000555555c78380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 36.740380][ T405] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.746800][ T405] CR2: 00007f919cf760d0 CR3: 00000001f31e4000 CR4: 00000000003406b0 [ 36.754705][ T405] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.762520][ T405] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.770427][ T405] Call Trace: [ 36.773652][ T405] ? __warn+0x162/0x250 [ 36.777636][ T405] ? report_bug+0x3a1/0x4e0 [ 36.781978][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.787444][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.792909][ T405] ? do_invalid_op+0x6e/0x110 [ 36.797546][ T405] ? invalid_op+0x1e/0x30 [ 36.801705][ T405] ? wake_up_klogd+0xb2/0xf0 [ 36.806134][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.811645][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 36.817066][ T405] sysfs_remove_files+0x91/0xe0 [ 36.821761][ T405] del_gendisk+0x26e/0xc30 [ 36.826109][ T405] ? avc_flush+0x1f0/0x1f0 [ 36.830356][ T405] ? device_add_disk_no_queue_reg+0x20/0x20 [ 36.836083][ T405] ? delete_node+0x706/0x780 [ 36.840513][ T405] loop_remove+0x42/0xa0 [ 36.844588][ T405] loop_control_ioctl+0x564/0x620 [ 36.849450][ T405] ? loop_remove+0xa0/0xa0 [ 36.853729][ T405] ? ptrace_stop+0x6ee/0xa30 [ 36.858139][ T405] ? loop_remove+0xa0/0xa0 [ 36.862381][ T405] do_vfs_ioctl+0x742/0x1720 [ 36.866812][ T405] ? ioctl_preallocate+0x250/0x250 [ 36.871766][ T405] ? check_preemption_disabled+0x153/0x320 [ 36.877396][ T405] ? syscall_trace_enter+0x650/0x940 [ 36.882518][ T405] ? do_syscall_64+0x1c0/0x1c0 [ 36.887240][ T405] ? switch_fpu_return+0x1d4/0x410 [ 36.892294][ T405] ? security_file_ioctl+0x7d/0xa0 [ 36.897205][ T405] __x64_sys_ioctl+0xd4/0x110 [ 36.901717][ T405] do_syscall_64+0xca/0x1c0 [ 36.906059][ T405] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 36.911799][ T405] ---[ end trace 75ce84ed7747bed6 ]--- [ 36.918864][ T405] ------------[ cut here ]------------ [ 36.924142][ T405] kernfs: can not remove 'bdi', no directory [ 36.930088][ T405] WARNING: CPU: 0 PID: 405 at fs/kernfs/dir.c:1511 kernfs_remove_by_name_ns+0xb1/0x100 [ 36.939654][ T405] Modules linked in: [ 36.943375][ T405] CPU: 0 PID: 405 Comm: syz-executor638 Tainted: G W 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 36.954743][ T405] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 36.964810][ T405] RIP: 0010:kernfs_remove_by_name_ns+0xb1/0x100 [ 36.970892][ T405] Code: ff 03 48 89 df e8 ff ef ff ff 48 89 df e8 67 ae ff ff 31 db eb 27 e8 ce ae a6 ff 48 c7 c7 40 8d e5 84 4c 89 fe e8 9f 69 7d ff <0f> 0b bb fe ff ff ff eb 16 e8 b1 ae a6 ff bb fe ff ff ff 48 c7 c7 [ 36.990407][ T405] RSP: 0018:ffff8881e07b7a78 EFLAGS: 00010246 [ 36.996559][ T405] RAX: 63101ec5e9fc4700 RBX: 0000000000000000 RCX: ffff8881f36c9f80 [ 37.004471][ T405] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 37.012438][ T405] RBP: ffff8881e07b7b88 R08: ffffffff814d59f2 R09: 0000000000000003 [ 37.020258][ T405] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881ef6a0000 [ 37.028062][ T405] R13: ffff8881ef6a04e8 R14: 0000000000000000 R15: ffffffff84f979e0 [ 37.035882][ T405] FS: 0000555555c78380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 37.044641][ T405] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.051066][ T405] CR2: 00007f919cf760d0 CR3: 00000001f31e4000 CR4: 00000000003406b0 [ 37.058872][ T405] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.066796][ T405] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.074610][ T405] Call Trace: [ 37.077754][ T405] ? __warn+0x162/0x250 [ 37.081739][ T405] ? report_bug+0x3a1/0x4e0 [ 37.086079][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 37.091550][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 37.097013][ T405] ? do_invalid_op+0x6e/0x110 [ 37.101518][ T405] ? invalid_op+0x1e/0x30 [ 37.105681][ T405] ? wake_up_klogd+0xb2/0xf0 [ 37.110113][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 37.115587][ T405] ? kernfs_remove_by_name_ns+0xb1/0x100 [ 37.121051][ T405] del_gendisk+0x5a1/0xc30 [ 37.125308][ T405] ? device_add_disk_no_queue_reg+0x20/0x20 [ 37.131034][ T405] ? delete_node+0x706/0x780 [ 37.135467][ T405] loop_remove+0x42/0xa0 [ 37.139560][ T405] loop_control_ioctl+0x564/0x620 [ 37.144484][ T405] ? loop_remove+0xa0/0xa0 [ 37.148736][ T405] ? ptrace_stop+0x6ee/0xa30 [ 37.153368][ T405] ? loop_remove+0xa0/0xa0 [ 37.157608][ T405] do_vfs_ioctl+0x742/0x1720 [ 37.162049][ T405] ? ioctl_preallocate+0x250/0x250 [ 37.166993][ T405] ? check_preemption_disabled+0x153/0x320 [ 37.172647][ T405] ? syscall_trace_enter+0x650/0x940 [ 37.177742][ T405] ? do_syscall_64+0x1c0/0x1c0 [ 37.182432][ T405] ? switch_fpu_return+0x1d4/0x410 [ 37.187375][ T405] ? security_file_ioctl+0x7d/0xa0 [ 37.192431][ T405] __x64_sys_ioctl+0xd4/0x110 [ 37.196941][ T405] do_syscall_64+0xca/0x1c0 [ 37.201293][ T405] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 37.207109][ T405] ---[ end trace 75ce84ed7747bed7 ]--- [ 37.214873][ T405] kasan: CONFIG_KASAN_INLINE enabled [ 37.220058][ T405] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 37.228011][ T405] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 37.235204][ T405] CPU: 0 PID: 405 Comm: syz-executor638 Tainted: G W 5.4.249-syzkaller-00002-g19cff29fe49c #0 [ 37.246819][ T405] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 [ 37.256799][ T405] RIP: 0010:strlen+0x28/0x60 [ 37.261335][ T405] Code: 40 00 41 57 41 56 41 54 53 49 89 fe 48 c7 c0 ff ff ff ff 49 bf 00 00 00 00 00 fc ff df 48 89 fb 49 89 c4 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 12 48 ff c3 49 8d 44 24 01 43 80 7c 26 01 [ 37.282664][ T405] RSP: 0018:ffff8881e07b7a00 EFLAGS: 00010246 [ 37.288562][ T405] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 37.296562][ T405] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 37.304358][ T405] RBP: 0000000000000000 R08: ffffffff81bd56dc R09: ffffed103c0f6f41 [ 37.312168][ T405] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffffffffff [ 37.319980][ T405] R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 37.327797][ T405] FS: 0000555555c78380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 37.336565][ T405] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.342980][ T405] CR2: 00007f919cf760d0 CR3: 00000001f31e4000 CR4: 00000000003406b0 [ 37.350822][ T405] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.359038][ T405] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.366841][ T405] Call Trace: [ 37.369972][ T405] ? __die+0xb4/0x100 [ 37.373794][ T405] ? die+0x26/0x50 [ 37.377354][ T405] ? do_general_protection+0x266/0x3c0 [ 37.382638][ T405] ? do_trap+0x340/0x340 [ 37.386719][ T405] ? general_protection+0x28/0x30 [ 37.391591][ T405] ? kernfs_find_ns+0x6c/0x440 [ 37.396200][ T405] ? strlen+0x28/0x60 [ 37.400000][ T405] kernfs_find_ns+0x83/0x440 [ 37.404437][ T405] kernfs_remove_by_name_ns+0x37/0x100 [ 37.409811][ T405] del_gendisk+0x9c7/0xc30 [ 37.414060][ T405] ? device_add_disk_no_queue_reg+0x20/0x20 [ 37.419789][ T405] ? delete_node+0x706/0x780 [ 37.424388][ T405] loop_remove+0x42/0xa0 [ 37.428464][ T405] loop_control_ioctl+0x564/0x620 [ 37.433335][ T405] ? loop_remove+0xa0/0xa0 [ 37.439522][ T405] ? ptrace_stop+0x6ee/0xa30 [ 37.444013][ T405] ? loop_remove+0xa0/0xa0 [ 37.448201][ T405] do_vfs_ioctl+0x742/0x1720 [ 37.452637][ T405] ? ioctl_preallocate+0x250/0x250 [ 37.457572][ T405] ? check_preemption_disabled+0x153/0x320 [ 37.463369][ T405] ? syscall_trace_enter+0x650/0x940 [ 37.468484][ T405] ? do_syscall_64+0x1c0/0x1c0 [ 37.473082][ T405] ? switch_fpu_return+0x1d4/0x410 [ 37.478030][ T405] ? security_file_ioctl+0x7d/0xa0 [ 37.483001][ T405] __x64_sys_ioctl+0xd4/0x110 [ 37.487481][ T405] do_syscall_64+0xca/0x1c0 [ 37.492177][ T405] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 37.497894][ T405] Modules linked in: [ 37.501713][ T405] ---[ end trace 75ce84ed7747bed8 ]--- [ 37.506989][ T405] RIP: 0010:strlen+0x28/0x60 [ 37.511357][ T405] Code: 40 00 41 57 41 56 41 54 53 49 89 fe 48 c7 c0 ff ff ff ff 49 bf 00 00 00 00 00 fc ff df 48 89 fb 49 89 c4 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 75 12 48 ff c3 49 8d 44 24 01 43 80 7c 26 01 [ 37.530920][ T405] RSP: 0018:ffff8881e07b7a00 EFLAGS: 00010246 [ 37.536808][ T405] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 [ 37.545392][ T405] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 37.553276][ T405] RBP: 0000000000000000 R08: ffffffff81bd56dc R09: ffffed103c0f6f41 [ 37.561121][ T405] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffffffffffff [ 37.569733][ T405] R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 37.577537][ T405] FS: 0000555555c78380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 37.586299][ T405] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 37.592780][ T405] CR2: 00007f919cf760d0 CR3: 00000001f31e4000 CR4: 00000000003406b0 [ 37.600633][ T405] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.608425][ T405] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.616348][ T405] Kernel panic - not syncing: Fatal exception [ 37.623170][ T405] Kernel Offset: disabled [ 37.627311][ T405] Rebooting in 86400 seconds.. [pid 405] ioctl(4, LOOP_CTL_REMOVE, 0