./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2577011554 <...> Warning: Permanently added '10.128.15.208' (ED25519) to the list of known hosts. execve("./syz-executor2577011554", ["./syz-executor2577011554"], 0x7ffebfa483a0 /* 10 vars */) = 0 brk(NULL) = 0x55556c114000 brk(0x55556c114d00) = 0x55556c114d00 arch_prctl(ARCH_SET_FS, 0x55556c114380) = 0 set_tid_address(0x55556c114650) = 5837 set_robust_list(0x55556c114660, 24) = 0 rseq(0x55556c114ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2577011554", 4096) = 28 getrandom("\x3b\x0c\xc7\x96\xcb\x32\x4e\xbc", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556c114d00 brk(0x55556c135d00) = 0x55556c135d00 brk(0x55556c136000) = 0x55556c136000 mprotect(0x7f948f2bc000, 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 5839 attached , child_tidptr=0x55556c114650) = 5839 [pid 5839] set_robust_list(0x55556c114660, 24) = 0 [pid 5839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5839] setpgid(0, 0) = 0 [pid 5839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5839] write(3, "1000", 4) = 4 [pid 5839] close(3) = 0 executing program [pid 5839] write(1, "executing program\n", 18) = 18 [pid 5839] memfd_create("syzkaller", 0) = 3 [pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9486e00000 [pid 5839] write(3, "\xeb\x76\x90\x45\x58\x46\x41\x54\x20\x20\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x80\x00\x00\x00\x08\x00\x00\x00\x88\x00\x00\x00\x0f\x00\x00\x00\x05\x00\x00\x00"..., 131072) = 131072 [pid 5839] munmap(0x7f9486e00000, 138412032) = 0 [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5839] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5839] close(3) = 0 [pid 5839] close(4) = 0 [pid 5839] mkdir("./file0", 0777) = 0 [ 225.081221][ T5839] loop0: detected capacity change from 0 to 256 [pid 5839] mount("/dev/loop0", "./file0", "exfat", MS_SYNCHRONOUS|MS_NODIRATIME, "") = 0 [pid 5839] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5839] chdir("./file0") = 0 [pid 5839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [pid 5839] creat("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 020) = 4 [pid 5839] mknod("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 0 [pid 5839] openat(AT_FDCWD, "cpuacct.usage_all", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 5 [pid 5839] creat("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 6 [ 225.130419][ T5839] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0xc61f63e4, utbl_chksum : 0xe619d30d) [pid 5839] creat("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 7 [pid 5839] mkdirat(AT_FDCWD, "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 0 [pid 5839] openat(AT_FDCWD, "blkio.throttle.io_service_bytes", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 8 [pid 5839] openat(AT_FDCWD, "hugetlb.1GB.rsvd.usage_in_bytes", O_WRONLY|O_CREAT|O_EXCL|O_TRUNC|O_APPEND|FASYNC|0x20, 000) = 9 [pid 5839] openat(AT_FDCWD, "cpuacct.usage_percpu", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 10 [pid 5839] open("./bus", O_RDWR|O_CREAT|O_NONBLOCK|O_DIRECT|O_NOFOLLOW|O_NOATIME, 000 [pid 5837] kill(-5839, SIGKILL) = 0 [pid 5837] kill(5839, SIGKILL) = 0 [pid 5837] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5837] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5837] getdents64(3, 0x55556c1156f0 /* 2 entries */, 32768) = 48 [pid 5837] getdents64(3, 0x55556c1156f0 /* 0 entries */, 32768) = 0 [pid 5837] close(3) = 0 [ 430.044529][ T30] INFO: task kworker/u8:1:12 blocked for more than 143 seconds. [ 430.052415][ T30] Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 [ 430.060552][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.070317][ T30] task:kworker/u8:1 state:D stack:21328 pid:12 tgid:12 ppid:2 flags:0x00004000 [ 430.081028][ T30] Workqueue: writeback wb_workfn (flush-7:0) [ 430.087395][ T30] Call Trace: [ 430.090693][ T30] [ 430.093661][ T30] __schedule+0x17fb/0x4be0 [ 430.098905][ T30] ? __pfx___schedule+0x10/0x10 [ 430.103801][ T30] ? __blk_flush_plug+0x449/0x500 [ 430.109689][ T30] ? __pfx_lock_release+0x10/0x10 [ 430.115102][ T30] ? kthread_data+0x52/0xd0 [ 430.119638][ T30] ? schedule+0x90/0x320 [ 430.123904][ T30] ? wq_worker_sleeping+0x66/0x240 [ 430.129693][ T30] ? schedule+0x90/0x320 [ 430.133971][ T30] schedule+0x14b/0x320 [ 430.138597][ T30] schedule_preempt_disabled+0x13/0x30 [ 430.144091][ T30] __mutex_lock+0x7e7/0xee0 [ 430.149028][ T30] ? __mutex_lock+0x5ef/0xee0 [ 430.153745][ T30] ? exfat_write_inode+0xe5/0x1a0 [ 430.159232][ T30] ? __pfx___mutex_lock+0x10/0x10 [ 430.164288][ T30] ? __writeback_single_inode+0x48f/0x10d0 [ 430.170545][ T30] ? do_raw_spin_unlock+0x13c/0x8b0 [ 430.176584][ T30] exfat_write_inode+0xe5/0x1a0 [ 430.181467][ T30] __writeback_single_inode+0x708/0x10d0 [ 430.187385][ T30] writeback_sb_inodes+0x820/0x1360 [ 430.192608][ T30] ? mark_lock+0x2ae/0x360 [ 430.197518][ T30] ? __pfx_writeback_sb_inodes+0x10/0x10 [ 430.203218][ T30] ? __pfx___up_read+0x10/0x10 [ 430.208358][ T30] ? do_raw_spin_lock+0x14f/0x370 [ 430.213421][ T30] __writeback_inodes_wb+0x11b/0x260 [ 430.219159][ T30] wb_writeback+0x427/0xb80 [ 430.223697][ T30] ? queue_io+0x321/0x5a0 [ 430.228473][ T30] ? __pfx_wb_writeback+0x10/0x10 [ 430.233632][ T30] wb_workfn+0xc4b/0x1080 [ 430.238445][ T30] ? __pfx_wb_workfn+0x10/0x10 [ 430.243252][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 430.249640][ T30] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 430.256290][ T30] ? process_scheduled_works+0x976/0x1840 [ 430.262040][ T30] process_scheduled_works+0xa66/0x1840 [ 430.268050][ T30] ? __pfx_process_scheduled_works+0x10/0x10 [ 430.274080][ T30] ? assign_work+0x364/0x3d0 [ 430.279216][ T30] worker_thread+0x870/0xd30 [ 430.283844][ T30] ? __kthread_parkme+0x169/0x1d0 [ 430.289958][ T30] ? __pfx_worker_thread+0x10/0x10 [ 430.295408][ T30] kthread+0x2f0/0x390 [ 430.299502][ T30] ? __pfx_worker_thread+0x10/0x10 [ 430.305154][ T30] ? __pfx_kthread+0x10/0x10 [ 430.309773][ T30] ret_from_fork+0x4b/0x80 [ 430.314201][ T30] ? __pfx_kthread+0x10/0x10 [ 430.319361][ T30] ret_from_fork_asm+0x1a/0x30 [ 430.324174][ T30] [ 430.327832][ T30] [ 430.327832][ T30] Showing all locks held in the system: [ 430.335984][ T30] 4 locks held by kworker/u8:1/12: [ 430.341112][ T30] #0: ffff8880206f0948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 [ 430.353308][ T30] #1: ffffc90000117d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 [ 430.366150][ T30] #2: ffff88805a26e0e0 (&type->s_umount_key#43){.+.+}-{4:4}, at: super_trylock_shared+0x22/0xf0 [ 430.377005][ T30] #3: ffff88805a18a0e8 (&sbi->s_lock){+.+.}-{4:4}, at: exfat_write_inode+0xe5/0x1a0 [ 430.386862][ T30] 1 lock held by khungtaskd/30: [ 430.391728][ T30] #0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 [ 430.402502][ T30] 1 lock held by klogd/5185: [ 430.407371][ T30] #0: ffff8880b863e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 430.417658][ T30] 2 locks held by getty/5578: [ 430.422346][ T30] #0: ffff88814d0da0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.432596][ T30] #1: ffffc90002ff62f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 [ 430.443022][ T30] 3 locks held by syz-executor257/5839: [ 430.448852][ T30] [ 430.451195][ T30] ============================================= [ 430.451195][ T30] [ 430.460111][ T30] NMI backtrace for cpu 0 [ 430.464464][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 [ 430.474972][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 430.485038][ T30] Call Trace: [ 430.488328][ T30] [ 430.491263][ T30] dump_stack_lvl+0x241/0x360 [ 430.495961][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.501170][ T30] ? __pfx__printk+0x10/0x10 [ 430.505783][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 430.510736][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.516206][ T30] ? _printk+0xd5/0x120 [ 430.520378][ T30] ? __pfx__printk+0x10/0x10 [ 430.524976][ T30] ? __wake_up_klogd+0xcc/0x110 [ 430.529843][ T30] ? __pfx__printk+0x10/0x10 [ 430.534443][ T30] ? __rcu_read_unlock+0xa1/0x110 [ 430.539479][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.545472][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 430.551471][ T30] watchdog+0xff6/0x1040 [ 430.555730][ T30] ? watchdog+0x1ea/0x1040 [ 430.560159][ T30] ? __pfx_watchdog+0x10/0x10 [ 430.564929][ T30] kthread+0x2f0/0x390 [ 430.569010][ T30] ? __pfx_watchdog+0x10/0x10 [ 430.573700][ T30] ? __pfx_kthread+0x10/0x10 [ 430.578301][ T30] ret_from_fork+0x4b/0x80 [ 430.582725][ T30] ? __pfx_kthread+0x10/0x10 [ 430.587325][ T30] ret_from_fork_asm+0x1a/0x30 [ 430.592114][ T30] [ 430.595270][ T30] Sending NMI from CPU 0 to CPUs 1: [ 430.600498][ C1] NMI backtrace for cpu 1 [ 430.600509][ C1] CPU: 1 UID: 0 PID: 5839 Comm: syz-executor257 Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 [ 430.600528][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 430.600537][ C1] RIP: 0010:lockdep_hardirqs_off+0x19/0x110 [ 430.600561][ C1] Code: 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <83> 3d 40 7e 50 04 00 0f 84 8e 00 00 00 49 89 fe 65 8b 05 b8 04 3c [ 430.600573][ C1] RSP: 0018:ffffc90004196d88 EFLAGS: 00000086 [ 430.600588][ C1] RAX: ca45c1d457419e00 RBX: ffffffff822bf8b0 RCX: ffff888034019e00 [ 430.600600][ C1] RDX: 0000000000000000 RSI: 0000000000000200 RDI: ffffffff822bf8b0 [ 430.600611][ C1] RBP: ffffc90004196ef0 R08: ffffffff822bf899 R09: 0000000000000000 [ 430.600622][ C1] R10: ffffc90004197320 R11: fffff52000832e68 R12: 0000000000000246 [ 430.600632][ C1] R13: dffffc0000000000 R14: 0000000000000200 R15: 00000000000000a6 [ 430.600643][ C1] FS: 000055556c114380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 430.600657][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.600668][ C1] CR2: 000055d3cb86ae98 CR3: 0000000079cd2000 CR4: 00000000003526f0 [ 430.600682][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 430.600691][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 430.600701][ C1] Call Trace: [ 430.600708][ C1] [ 430.600715][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 430.600731][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 430.600748][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.600764][ C1] ? nmi_handle+0x2a/0x5a0 [ 430.600787][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 430.600806][ C1] ? nmi_handle+0x14f/0x5a0 [ 430.600822][ C1] ? nmi_handle+0x2a/0x5a0 [ 430.600838][ C1] ? lockdep_hardirqs_off+0x19/0x110 [ 430.600856][ C1] ? default_do_nmi+0x63/0x160 [ 430.600871][ C1] ? exc_nmi+0x123/0x1f0 [ 430.600886][ C1] ? end_repeat_nmi+0xf/0x53 [ 430.600906][ C1] ? __find_get_block+0x190/0x1150 [ 430.600922][ C1] ? __find_get_block+0x179/0x1150 [ 430.600937][ C1] ? __find_get_block+0x190/0x1150 [ 430.600951][ C1] ? lockdep_hardirqs_off+0x19/0x110 [ 430.600969][ C1] ? lockdep_hardirqs_off+0x19/0x110 [ 430.600987][ C1] ? lockdep_hardirqs_off+0x19/0x110 [ 430.601005][ C1] [ 430.601010][ C1] [ 430.601016][ C1] ? __find_get_block+0x190/0x1150 [ 430.601029][ C1] trace_hardirqs_off+0x12/0x40 [ 430.601043][ C1] __find_get_block+0x190/0x1150 [ 430.601059][ C1] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 430.601075][ C1] ? __pfx___find_get_block+0x10/0x10 [ 430.601090][ C1] ? __pfx___might_resched+0x10/0x10 [ 430.601112][ C1] ? __find_get_block+0x58a/0x1150 [ 430.601127][ C1] ? fs_reclaim_acquire+0x93/0x130 [ 430.601148][ C1] bdev_getblk+0x33/0x550 [ 430.601164][ C1] ? __pfx_exfat_find_location+0x10/0x10 [ 430.601184][ C1] __bread_gfp+0x86/0x400 [ 430.601200][ C1] exfat_get_dentry+0x53b/0x730 [ 430.601216][ C1] ? bdev_getblk+0x6e/0x550 [ 430.601234][ C1] ? __pfx_exfat_get_dentry+0x10/0x10 [ 430.601253][ C1] ? exfat_find_dir_entry+0xee5/0x29c0 [ 430.601277][ C1] exfat_find_dir_entry+0x56a/0x29c0 [ 430.601313][ C1] ? __pfx_exfat_find_dir_entry+0x10/0x10 [ 430.601339][ C1] exfat_lookup+0x810/0x1e70 [ 430.601361][ C1] ? tomoyo_path_number_perm+0x206/0x860 [ 430.601380][ C1] ? __pfx_exfat_lookup+0x10/0x10 [ 430.601394][ C1] ? tomoyo_path_number_perm+0x679/0x860 [ 430.601434][ C1] ? smk_tskacc+0x300/0x370 [ 430.601458][ C1] ? __pfx_smack_inode_permission+0x10/0x10 [ 430.601486][ C1] ? bpf_lsm_inode_create+0x9/0x10 [ 430.601503][ C1] ? security_inode_create+0xbe/0x340 [ 430.601523][ C1] ? __pfx_exfat_lookup+0x10/0x10 [ 430.601539][ C1] path_openat+0x11a7/0x3590 [ 430.601571][ C1] ? __pfx_path_openat+0x10/0x10 [ 430.601598][ C1] do_filp_open+0x27f/0x4e0 [ 430.601617][ C1] ? __pfx_do_filp_open+0x10/0x10 [ 430.601635][ C1] ? do_raw_spin_lock+0x14f/0x370 [ 430.601670][ C1] do_sys_openat2+0x13e/0x1d0 [ 430.601687][ C1] ? __pfx_do_sys_openat2+0x10/0x10 [ 430.601704][ C1] ? lockdep_hardirqs_on+0x99/0x150 [ 430.601722][ C1] ? _raw_spin_unlock_irq+0x2e/0x50 [ 430.601738][ C1] ? ptrace_notify+0x279/0x380 [ 430.601758][ C1] __x64_sys_open+0x225/0x270 [ 430.601775][ C1] ? __pfx___x64_sys_open+0x10/0x10 [ 430.601793][ C1] ? do_syscall_64+0x100/0x230 [ 430.601816][ C1] do_syscall_64+0xf3/0x230 [ 430.601834][ C1] ? clear_bhb_loop+0x35/0x90 [ 430.601854][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.601873][ C1] RIP: 0033:0x7f948f247c59 [ 430.601893][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 430.601905][ C1] RSP: 002b:00007ffea51c2928 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 430.601920][ C1] RAX: ffffffffffffffda RBX: 0000000020000e00 RCX: 00007f948f247c59 [ 430.601931][ C1] RDX: 0000000000000000 RSI: 0000000000064842 RDI: 00000000200005c0 [ 430.601941][ C1] RBP: 00007f948f2bc5f0 R08: 000055556c1154c0 R09: 000055556c1154c0 [ 430.601952][ C1] R10: 000055556c1154c0 R11: 0000000000000246 R12: 00007ffea51c2950 [ 430.601963][ C1] R13: 00007ffea51c2b78 R14: 431bde82d7b634db R15: 00007f948f29003b [ 430.601981][ C1] [ 430.601988][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.490 msecs [ 431.132322][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 431.139186][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 [ 431.149716][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 431.159781][ T30] Call Trace: [ 431.163070][ T30] [ 431.166013][ T30] dump_stack_lvl+0x241/0x360 [ 431.170709][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 431.175920][ T30] ? __pfx__printk+0x10/0x10 [ 431.180532][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 431.186535][ T30] ? vscnprintf+0x5d/0x90 [ 431.190881][ T30] panic+0x349/0x880 [ 431.194791][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 431.200955][ T30] ? __pfx_panic+0x10/0x10 [ 431.205387][ T30] ? tick_nohz_tick_stopped+0x82/0xb0 [ 431.210770][ T30] ? __irq_work_queue_local+0x137/0x410 [ 431.216328][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 431.221718][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 431.228055][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 431.234225][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 431.240390][ T30] watchdog+0x1035/0x1040 [ 431.244735][ T30] ? watchdog+0x1ea/0x1040 [ 431.249176][ T30] ? __pfx_watchdog+0x10/0x10 [ 431.253878][ T30] kthread+0x2f0/0x390 [ 431.257958][ T30] ? __pfx_watchdog+0x10/0x10 [ 431.262647][ T30] ? __pfx_kthread+0x10/0x10 [ 431.267246][ T30] ret_from_fork+0x4b/0x80 [ 431.271674][ T30] ? __pfx_kthread+0x10/0x10 [ 431.276276][ T30] ret_from_fork_asm+0x1a/0x30 [ 431.281064][ T30] [ 431.284362][ T30] Kernel Offset: disabled [ 431.288680][ T30] Rebooting in 86400 seconds..