./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3338499405 <...> DUID 00:04:9f:e8:07:f9:ba:36:1f:d4:05:68:5a:d1:6a:7f:90:cd forked to background, child pid 4661 [ 30.445720][ T4662] 8021q: adding VLAN 0 to HW filter on device bond0 [ 30.461425][ T4662] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.173' (ECDSA) to the list of known hosts. execve("./syz-executor3338499405", ["./syz-executor3338499405"], 0x7ffed95f3360 /* 10 vars */) = 0 brk(NULL) = 0x55555578f000 brk(0x55555578fc40) = 0x55555578fc40 arch_prctl(ARCH_SET_FS, 0x55555578f300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3338499405", 4096) = 28 brk(0x5555557b0c40) = 0x5555557b0c40 brk(0x5555557b1000) = 0x5555557b1000 mprotect(0x7fded93f2000, 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, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 4993 attached [pid 4993] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 4992] <... clone resumed>, child_tidptr=0x55555578f5d0) = 4993 [pid 4993] setpgid(0, 0) = 0 [pid 4993] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 4993] write(3, "1000", 4) = 4 [pid 4993] close(3) = 0 [pid 4993] memfd_create("syzkaller", 0) = 3 [pid 4993] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fded0f2c000 syzkaller login: [ 55.466693][ T4993] memfd_create() without MFD_EXEC nor MFD_NOEXEC_SEAL, pid=4993 'syz-executor333' [pid 4993] write(3, "\x58\x46\x53\x42\x00\x00\x02\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x5e\x62\x73\xb8\x21\x67\x42\xbb\x91\x1b\x41\x8a\xa1\x4a\x12\x61\x00\x00\x00\x00\x00\x00\x80\x40\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x00\x21\x00\x00\x00\x00\x00\x00\x00\x22\x00\x00\x00\x08\x00\x00\x80\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x80"..., 33554432) = 33554432 [pid 4993] munmap(0x7fded0f2c000, 33554432) = 0 [pid 4993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 4993] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 4993] close(3) = 0 [pid 4993] mkdir("./file0", 0777) = 0 [ 55.809363][ T4993] loop0: detected capacity change from 0 to 65536 [ 55.825111][ T4993] XFS (loop0): Deprecated V4 format (crc=0) will not be supported after September 2030. [ 55.835864][ T4993] XFS (loop0): Mounting V4 Filesystem 5e6273b8-2167-42bb-911b-418aa14a1261 [ 55.846587][ T4993] XFS (loop0): Log size 128 blocks too small, minimum size is 2880 blocks [ 55.855255][ T4993] XFS (loop0): Log size out of supported range. [ 55.861877][ T4993] XFS (loop0): Continuing onwards, but if log hangs are experienced then please report this message in the bug report. [ 55.887585][ T4993] XFS (loop0): Starting recovery (logdev: internal) [ 55.901531][ T4993] XFS (loop0): Ending recovery (logdev: internal) [pid 4993] mount("/dev/loop0", "./file0", "xfs", MS_SILENT, "inode32,usrquota,,nouuid" [pid 4992] kill(-4993, SIGKILL) = 0 [pid 4992] kill(4993, SIGKILL) = 0 [pid 4992] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 4992] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 4992] getdents64(3, 0x555555790620 /* 2 entries */, 32768) = 48 [pid 4992] getdents64(3, 0x555555790620 /* 0 entries */, 32768) = 0 [pid 4992] close(3) = 0 [ 76.592208][ T7] cfg80211: failed to load regulatory.db [ 286.510664][ T28] INFO: task syz-executor333:4993 blocked for more than 143 seconds. [ 286.518816][ T28] Not tainted 6.4.0-rc6-syzkaller-00037-gb6dad5178cea #0 [ 286.526430][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.535127][ T28] task:syz-executor333 state:D stack:23576 pid:4993 ppid:4992 flags:0x00004006 [ 286.544462][ T28] Call Trace: [ 286.547760][ T28] [ 286.550740][ T28] __schedule+0x187b/0x4900 [ 286.555577][ T28] ? release_firmware_map_entry+0x190/0x190 [ 286.561509][ T28] ? __lock_acquire+0x2070/0x2070 [ 286.566711][ T28] ? xlog_space_left+0x152/0x2b0 [ 286.571772][ T28] ? do_raw_spin_unlock+0x13b/0x8b0 [ 286.576979][ T28] ? xlog_grant_push_threshold+0x1a7/0x1f0 [ 286.582828][ T28] schedule+0xc3/0x180 [ 286.586907][ T28] xlog_grant_head_wait+0x387/0x910 [ 286.592171][ T28] xlog_grant_head_check+0x299/0x480 [ 286.597476][ T28] ? xlog_grant_push_ail+0xd0/0xd0 [ 286.602655][ T28] ? xlog_grant_push_threshold+0x1a7/0x1f0 [ 286.608471][ T28] xfs_log_reserve+0x3c4/0xb10 [ 286.613301][ T28] ? xlog_grant_head_check+0x480/0x480 [ 286.618798][ T28] ? xfs_mod_freecounter+0x1e6/0x490 [ 286.624177][ T28] xfs_trans_reserve+0x239/0x6a0 [ 286.629121][ T28] xfs_trans_alloc+0x420/0x810 [ 286.633938][ T28] xfs_qm_qino_alloc+0x414/0xa30 [ 286.638947][ T28] ? xfs_qm_shrink_scan+0x3e0/0x3e0 [ 286.644187][ T28] ? __asan_memset+0x23/0x40 [ 286.648813][ T28] ? lockdep_init_map_type+0xa1/0x8e0 [ 286.654227][ T28] xfs_qm_init_quotainos+0x622/0x8a0 [ 286.659518][ T28] ? xfs_qm_dqpurge+0x670/0x670 [ 286.664406][ T28] ? __raw_spin_lock_init+0x45/0x100 [ 286.669712][ T28] ? __list_lru_init+0x4da/0x5e0 [ 286.674798][ T28] xfs_qm_init_quotainfo+0x11e/0x1280 [ 286.680178][ T28] ? rcu_lock_release+0x5/0x30 [ 286.685030][ T28] ? __percpu_counter_compare+0xa4/0x2d0 [ 286.690762][ T28] ? __lock_acquire+0x2070/0x2070 [ 286.695777][ T28] ? xfs_qm_mount_quotas+0x620/0x620 [ 286.701172][ T28] ? xfs_mod_freecounter+0x1e6/0x490 [ 286.706554][ T28] ? xfs_fs_unreserve_ag_blocks+0x19a/0x290 [ 286.712485][ T28] ? xfs_perag_rele+0x103/0x260 [ 286.717340][ T28] xfs_qm_mount_quotas+0x9b/0x620 [ 286.722427][ T28] xfs_mountfs+0x1865/0x1f10 [ 286.727035][ T28] ? lockdep_softirqs_off+0x420/0x420 [ 286.732493][ T28] ? xfs_default_resblks+0x70/0x70 [ 286.737612][ T28] ? xfs_filestream_mount+0x80/0x80 [ 286.742848][ T28] ? xfs_mru_cache_create+0x450/0x560 [ 286.748231][ T28] xfs_fs_fill_super+0xfd7/0x1230 [ 286.753313][ T28] get_tree_bdev+0x405/0x620 [ 286.757909][ T28] ? xfs_fs_warn_deprecated+0x190/0x190 [ 286.763492][ T28] vfs_get_tree+0x8c/0x270 [ 286.767915][ T28] do_new_mount+0x28f/0xae0 [ 286.772805][ T28] ? path_mount+0x5f2/0xf80 [ 286.777310][ T28] ? do_move_mount_old+0x170/0x170 [ 286.782721][ T28] ? user_path_at_empty+0x12f/0x180 [ 286.787932][ T28] __se_sys_mount+0x2d9/0x3c0 [ 286.792750][ T28] ? __x64_sys_mount+0xc0/0xc0 [ 286.797520][ T28] ? syscall_enter_from_user_mode+0x32/0x230 [ 286.803611][ T28] ? __x64_sys_mount+0x20/0xc0 [ 286.808472][ T28] do_syscall_64+0x41/0xc0 [ 286.812934][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 286.818909][ T28] RIP: 0033:0x7fded937a61a [ 286.823619][ T28] RSP: 002b:00007ffda95d52b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 [ 286.832067][ T28] RAX: ffffffffffffffda RBX: 00646975756f6e2c RCX: 00007fded937a61a [ 286.840037][ T28] RDX: 000000002000bb00 RSI: 0000000020000000 RDI: 00007ffda95d52d0 [ 286.848035][ T28] RBP: 00007ffda95d52d0 R08: 00007ffda95d5310 R09: 0000000000000002 [ 286.856066][ T28] R10: 0000000000008000 R11: 0000000000000206 R12: 0000000000000004 [ 286.864110][ T28] R13: 000055555578f2c0 R14: 0000000000008000 R15: 00007ffda95d5310 [ 286.872208][ T28] [ 286.875294][ T28] [ 286.875294][ T28] Showing all locks held in the system: [ 286.883044][ T28] 1 lock held by rcu_tasks_kthre/13: [ 286.888498][ T28] #0: ffffffff8cf276f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 [ 286.899083][ T28] 1 lock held by rcu_tasks_trace/14: [ 286.904491][ T28] #0: ffffffff8cf27ab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 [ 286.915492][ T28] 1 lock held by khungtaskd/28: [ 286.920348][ T28] #0: ffffffff8cf27520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 286.929754][ T28] 2 locks held by getty/4744: [ 286.934477][ T28] #0: ffff88814aec2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.944467][ T28] #1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 [ 286.954603][ T28] 2 locks held by syz-executor333/4993: [ 286.960150][ T28] #0: ffff88807caf00e0 (&type->s_umount_key#42/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 [ 286.970375][ T28] #1: ffff88807caf0650 (sb_internal#2){.+.+}-{0:0}, at: xfs_qm_qino_alloc+0x414/0xa30 [ 286.980276][ T28] [ 286.982656][ T28] ============================================= [ 286.982656][ T28] [ 286.991335][ T28] NMI backtrace for cpu 0 [ 286.995777][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc6-syzkaller-00037-gb6dad5178cea #0 [ 287.005648][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 287.016212][ T28] Call Trace: [ 287.019476][ T28] [ 287.022401][ T28] dump_stack_lvl+0x1e7/0x2d0 [ 287.027065][ T28] ? nf_tcp_handle_invalid+0x650/0x650 [ 287.032505][ T28] ? panic+0x770/0x770 [ 287.036573][ T28] ? __irq_work_queue_local+0x137/0x3e0 [ 287.042137][ T28] nmi_cpu_backtrace+0x498/0x4d0 [ 287.047071][ T28] ? vprintk_emit+0x10d/0x1f0 [ 287.051829][ T28] ? nmi_trigger_cpumask_backtrace+0x300/0x300 [ 287.057973][ T28] ? _printk+0xd5/0x120 [ 287.062285][ T28] ? panic+0x770/0x770 [ 287.066338][ T28] ? __wake_up_klogd+0xcc/0x100 [ 287.071356][ T28] ? panic+0x770/0x770 [ 287.075504][ T28] ? wq_watchdog_touch+0x72/0x110 [ 287.080631][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 287.086685][ T28] nmi_trigger_cpumask_backtrace+0x187/0x300 [ 287.093016][ T28] watchdog+0xec2/0xf00 [ 287.097353][ T28] kthread+0x2b8/0x350 [ 287.101414][ T28] ? hungtask_pm_notify+0x90/0x90 [ 287.106627][ T28] ? kthread_blkcg+0xd0/0xd0 [ 287.111204][ T28] ret_from_fork+0x1f/0x30 [ 287.115629][ T28] [ 287.118695][ T28] Sending NMI from CPU 0 to CPUs 1: [ 287.124045][ C1] NMI backtrace for cpu 1 [ 287.124056][ C1] CPU: 1 PID: 12 Comm: kworker/u4:1 Not tainted 6.4.0-rc6-syzkaller-00037-gb6dad5178cea #0 [ 287.124071][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 287.124080][ C1] Workqueue: events_unbound toggle_allocation_gate [ 287.124102][ C1] RIP: 0010:do_raw_spin_lock+0xd1/0x3a0 [ 287.124124][ C1] Code: 24 30 80 3c 10 00 74 12 48 89 df e8 19 e1 76 00 48 ba 00 00 00 00 00 fc ff df 48 89 5c 24 20 48 8b 03 65 48 8b 0d 8f 41 97 7e <48> 89 4c 24 28 48 39 c8 0f 84 33 01 00 00 49 8d 5c 24 08 49 89 df [ 287.124136][ C1] RSP: 0018:ffffc90000117ae0 EFLAGS: 00000046 [ 287.124147][ C1] RAX: ffffffffffffffff RBX: ffff888012e41010 RCX: ffff888015e45940 [ 287.124157][ C1] RDX: dffffc0000000000 RSI: 1ffff92000022f64 RDI: ffff888012e41000 [ 287.124167][ C1] RBP: ffffc90000117bb0 R08: dffffc0000000000 R09: fffffbfff206544e [ 287.124176][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888012e41000 [ 287.124191][ C1] R13: 1ffff92000022f78 R14: ffffc90000117be0 R15: dffffc0000000000 [ 287.124201][ C1] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 287.124212][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.124221][ C1] CR2: 000056546da15680 CR3: 000000000cd30000 CR4: 00000000003506e0 [ 287.124234][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.124241][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.124250][ C1] Call Trace: [ 287.124254][ C1] [ 287.124259][ C1] ? nmi_cpu_backtrace+0x3be/0x4d0 [ 287.124276][ C1] ? read_lock_is_recursive+0x20/0x20 [ 287.124294][ C1] ? nmi_trigger_cpumask_backtrace+0x300/0x300 [ 287.124309][ C1] ? unknown_nmi_error+0xc0/0xc0 [ 287.124329][ C1] ? nmi_cpu_backtrace_handler+0xc/0x10 [ 287.124343][ C1] ? nmi_handle+0xf7/0x370 [ 287.124358][ C1] ? do_raw_spin_lock+0xd1/0x3a0 [ 287.124376][ C1] ? default_do_nmi+0x62/0x150 [ 287.124391][ C1] ? exc_nmi+0x11e/0x1f0 [ 287.124404][ C1] ? end_repeat_nmi+0x16/0x31 [ 287.124476][ C1] ? do_raw_spin_lock+0xd1/0x3a0 [ 287.124495][ C1] ? do_raw_spin_lock+0xd1/0x3a0 [ 287.124514][ C1] ? do_raw_spin_lock+0xd1/0x3a0 [ 287.124533][ C1] [ 287.124537][ C1] [ 287.124544][ C1] ? __rwlock_init+0x150/0x150 [ 287.124566][ C1] _raw_spin_lock_irq+0xdf/0x120 [ 287.124599][ C1] ? _raw_spin_lock_irqsave+0x120/0x120 [ 287.124619][ C1] process_one_work+0xa59/0x10e0 [ 287.124645][ C1] ? worker_detach_from_pool+0x290/0x290 [ 287.124664][ C1] ? _raw_spin_lock_irqsave+0x120/0x120 [ 287.124678][ C1] ? kthread_data+0x52/0xc0 [ 287.124695][ C1] ? wq_worker_running+0x9b/0x1a0 [ 287.124712][ C1] worker_thread+0xa63/0x1210 [ 287.124742][ C1] kthread+0x2b8/0x350 [ 287.124757][ C1] ? pr_cont_work+0x5e0/0x5e0 [ 287.124773][ C1] ? kthread_blkcg+0xd0/0xd0 [ 287.124790][ C1] ret_from_fork+0x1f/0x30 [ 287.124814][ C1] [ 287.125042][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 287.417880][ T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc6-syzkaller-00037-gb6dad5178cea #0 [ 287.427766][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 287.437902][ T28] Call Trace: [ 287.441178][ T28] [ 287.444204][ T28] dump_stack_lvl+0x1e7/0x2d0 [ 287.448879][ T28] ? nf_tcp_handle_invalid+0x650/0x650 [ 287.454416][ T28] ? panic+0x770/0x770 [ 287.458490][ T28] ? vscnprintf+0x5d/0x80 [ 287.462832][ T28] panic+0x30f/0x770 [ 287.466744][ T28] ? nmi_trigger_cpumask_backtrace+0x233/0x300 [ 287.472910][ T28] ? __memcpy_flushcache+0x2b0/0x2b0 [ 287.478216][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 287.484278][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 287.490427][ T28] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 287.496483][ T28] ? nmi_trigger_cpumask_backtrace+0x23c/0x300 [ 287.502802][ T28] watchdog+0xf00/0xf00 [ 287.506960][ T28] kthread+0x2b8/0x350 [ 287.511031][ T28] ? hungtask_pm_notify+0x90/0x90 [ 287.516046][ T28] ? kthread_blkcg+0xd0/0xd0 [ 287.520648][ T28] ret_from_fork+0x1f/0x30 [ 287.525082][ T28] [ 287.528322][ T28] Kernel Offset: disabled [ 287.532664][ T28] Rebooting in 86400 seconds..