./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3117654011 <...> Warning: Permanently added '10.128.1.47' (ED25519) to the list of known hosts. execve("./syz-executor3117654011", ["./syz-executor3117654011"], 0x7ffed677c180 /* 10 vars */) = 0 brk(NULL) = 0x55559469c000 brk(0x55559469cd00) = 0x55559469cd00 arch_prctl(ARCH_SET_FS, 0x55559469c380) = 0 set_tid_address(0x55559469c650) = 5826 set_robust_list(0x55559469c660, 24) = 0 rseq(0x55559469cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3117654011", 4096) = 28 getrandom("\x80\xbd\x37\xb1\x1d\xf4\x4e\x12", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55559469cd00 brk(0x5555946bdd00) = 0x5555946bdd00 brk(0x5555946be000) = 0x5555946be000 mprotect(0x7f962b105000, 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 mkdir("./syzkaller.EcyGOY", 0700) = 0 chmod("./syzkaller.EcyGOY", 0777) = 0 chdir("./syzkaller.EcyGOY") = 0 mkdir("./0", 0777) = 0 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 5827 attached [pid 5827] set_robust_list(0x55559469c660, 24 [pid 5826] <... clone resumed>, child_tidptr=0x55559469c650) = 5827 [pid 5827] <... set_robust_list resumed>) = 0 [pid 5827] chdir("./0") = 0 [pid 5827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5827] setpgid(0, 0) = 0 [pid 5827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5827] write(3, "1000", 4) = 4 [pid 5827] close(3) = 0 [pid 5827] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5827] write(1, "executing program\n", 18) = 18 [pid 5827] memfd_create("syzkaller", 0) = 3 [pid 5827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9622c00000 [pid 5827] write(3, "\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\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"..., 16777216) = 16777216 [pid 5827] munmap(0x7f9622c00000, 138412032) = 0 [pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5827] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5827] close(3) = 0 [pid 5827] close(4) = 0 [pid 5827] mkdir("./file0", 0777) = 0 [ 78.363609][ T5827] loop0: detected capacity change from 0 to 32768 [ 78.466437][ T5827] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names [ 78.482510][ T5827] bcachefs (loop0): recovering from clean shutdown, journal seq 13 [ 78.505248][ T5827] bcachefs (loop0): accounting_read... done [ 78.512198][ T5827] bcachefs (loop0): alloc_read... done [ 78.517790][ T5827] bcachefs (loop0): stripes_read... done [ 78.523485][ T5827] bcachefs (loop0): snapshots_read... done [ 78.532095][ T5827] bcachefs (loop0): journal_replay... done [ 78.538163][ T5827] bcachefs (loop0): resume_logged_ops... done [ 78.544325][ T5827] bcachefs (loop0): delete_dead_inodes... done [ 78.553247][ T5827] bcachefs (loop0): going read-write [pid 5827] mount("/dev/loop0", "./file0", "bcachefs", 0, "") = 0 [pid 5827] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5827] chdir("./file0") = 0 [pid 5827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5827] ioctl(4, LOOP_CLR_FD) = 0 [pid 5827] close(4) = 0 [ 78.562413][ T5827] bcachefs (loop0): done starting filesystem [pid 5827] exit_group(0) = ? [pid 5827] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5827, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=28 /* 0.28 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55559469d6f0 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 [ 78.730829][ T5826] bcachefs (loop0): shutting down [ 78.736031][ T5826] bcachefs (loop0): going read-only [ 78.741793][ T5826] bcachefs (loop0): finished waiting for writes to stop [ 87.029256][ T51] cfg80211: failed to load regulatory.db [ 108.797429][ T5837] Allocator stuck? Waited for 30 seconds [ 108.797445][ T5837] Allocator debug: [ 108.797453][ T5837] capacity1536 [ 108.797460][ T5837] reserved 31232 [ 108.797467][ T5837] hidden 0 [ 108.797474][ T5837] btree 0 [ 108.797481][ T5837] data 0 [ 108.797489][ T5837] cached 0 [ 108.797496][ T5837] reserved 0 [ 108.797503][ T5837] online_reserved 0 [ 108.797510][ T5837] nr_inodes 0 [ 108.797517][ T5837] [ 108.797524][ T5837] freelist_wait waiting [ 108.797531][ T5837] open buckets allocated1 [ 108.797538][ T5837] open buckets total 1024 [ 108.797546][ T5837] open_buckets_wait empty [ 108.797553][ T5837] open_buckets_btree 0 [ 108.797560][ T5837] open_buckets_user 0 [ 108.797567][ T5837] btree reserve cache 0 [ 108.797574][ T5837] [ 108.797581][ T5837] Dev 0: [ 108.797587][ T5837] buckets sectors fragmented [ 108.797596][ T5837] free 0 0 0 [ 108.797604][ T5837] sb 0 0 0 [ 108.797613][ T5837] journal 0 0 0 [ 108.797622][ T5837] btree 0 0 0 [ 108.797630][ T5837] user 0 0 0 [ 108.797639][ T5837] cached 0 0 0 [ 108.797647][ T5837] parity 0 0 0 [ 108.797656][ T5837] stripe 0 0 0 [ 108.797664][ T5837] need_gc_gens 0 0 0 [ 108.797673][ T5837] need_discard 0 0 0 [ 108.797681][ T5837] unstriped 0 0 0 [ 108.797690][ T5837] capacity 128 [ 108.797697][ T5837] [ 108.797703][ T5837] reserves: [ 108.797710][ T5837] stripe 60 [ 108.797717][ T5837] normal 58 [ 108.797725][ T5837] copygc 56 [ 108.797732][ T5837] btree 28 [ 108.797739][ T5837] btree_copygc 0 [ 108.797747][ T5837] reclaim 0 [ 108.797754][ T5837] interior_updates 0 [ 108.797761][ T5837] [ 108.797767][ T5837] open buckets 0 [ 108.797775][ T5837] buckets to invalidate 0 [ 108.797782][ T5837] [ 108.797788][ T5837] Copygc debug: [ 108.797795][ T5837] running: 1 [ 108.797802][ T5837] copygc_wait:0 [ 108.797809][ T5837] copygc_wait_at:0 [ 108.797815][ T5837] Currently waiting for:0 B [ 108.797823][ T5837] Currently waiting since:640 KiB [ 108.797830][ T5837] Currently calculated wait:0 B [ 108.797838][ T5837] [ 108.797844][ T5837] Journal debug: [ 108.797851][ T5837] flags: replay_done,running,may_skip_flush,need_flush_write [ 108.797860][ T5837] dirty journal entries: 0/32768 [ 108.797868][ T5837] seq: 13 [ 108.797875][ T5837] seq_ondisk: 13 [ 108.797882][ T5837] last_seq: 14 [ 108.797890][ T5837] last_seq_ondisk: 14 [ 108.797897][ T5837] flushed_seq_ondisk: 13 [ 108.797904][ T5837] watermark: stripe [ 108.797912][ T5837] each entry reserved: 321 [ 108.797919][ T5837] nr flush writes: 0 [ 108.797927][ T5837] nr noflush writes: 0 [ 108.797934][ T5837] average write size: 0 B [ 108.797941][ T5837] nr direct reclaim: 0 [ 108.797948][ T5837] nr background reclaim: 0 [ 108.797956][ T5837] reclaim kicked: 0 [ 108.797963][ T5837] reclaim runs in: 0 ms [ 108.797971][ T5837] blocked: 0 [ 108.797978][ T5837] current entry sectors: 256 [ 108.797985][ T5837] current entry error: ok [ 108.797993][ T5837] current entry: closed [ 108.798000][ T5837] unwritten entries: [ 108.798007][ T5837] last buf closed [ 108.798014][ T5837] space: [ 108.798020][ T5837] discarded 256:1792 [ 108.798028][ T5837] clean ondisk 256:1792 [ 108.798036][ T5837] clean 256:1792 [ 108.798043][ T5837] total 256:2048 [ 108.798051][ T5837] dev 0: [ 108.798057][ T5837] nr 8 [ 108.798065][ T5837] bucket size 256 [ 108.798072][ T5837] available 6:256 [ 108.798079][ T5837] discard_idx 0 [ 108.798087][ T5837] dirty_ondisk 0 (seq 0) [ 108.798094][ T5837] dirty_idx 0 (seq 0) [ 108.798102][ T5837] cur_idx 0 (seq 0) [ 108.798110][ T5837] [ 286.707012][ T30] INFO: task syz-executor311:5826 blocked for more than 143 seconds. [ 286.715349][ T30] Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 [ 286.723182][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.731950][ T30] task:syz-executor311 state:D stack:23840 pid:5826 tgid:5826 ppid:5823 flags:0x00004002 [ 286.742340][ T30] Call Trace: [ 286.745664][ T30] [ 286.748666][ T30] __schedule+0x17fb/0x4be0 [ 286.753259][ T30] ? __pfx___schedule+0x10/0x10 [ 286.758256][ T30] ? __pfx_lock_release+0x10/0x10 [ 286.763354][ T30] ? schedule+0x90/0x320 [ 286.767674][ T30] schedule+0x14b/0x320 [ 286.771894][ T30] schedule_timeout+0xb0/0x290 [ 286.776812][ T30] ? __pfx_schedule_timeout+0x10/0x10 [ 286.782258][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 286.788381][ T30] ? wait_for_completion+0x2fe/0x620 [ 286.793744][ T30] ? wait_for_completion+0x2fe/0x620 [ 286.799198][ T30] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.804441][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 286.809719][ T30] ? wait_for_completion+0x2fe/0x620 [ 286.815080][ T30] wait_for_completion+0x355/0x620 [ 286.820363][ T30] ? __pfx_wait_for_completion+0x10/0x10 [ 286.826081][ T30] ? synchronize_rcu+0x11b/0x360 [ 286.831123][ T30] ? kthread_unpark+0xd0/0x290 [ 286.835997][ T30] kthread_stop+0x19e/0x640 [ 286.840662][ T30] bch2_copygc_stop+0x4f/0x150 [ 286.845473][ T30] __bch2_fs_read_only+0x47/0x450 [ 286.850577][ T30] bch2_fs_read_only+0xb57/0x1200 [ 286.855680][ T30] ? __pfx_bch2_fs_read_only+0x10/0x10 [ 286.861310][ T30] ? __bch2_print+0x17a/0x220 [ 286.866043][ T30] ? down_write+0x18c/0x220 [ 286.870632][ T30] ? __pfx_down_write+0x10/0x10 [ 286.875544][ T30] ? hook_sb_delete+0xaa0/0xbd0 [ 286.880566][ T30] __bch2_fs_stop+0x105/0x5c0 [ 286.885290][ T30] ? __pfx___bch2_fs_stop+0x10/0x10 [ 286.890573][ T30] ? __pfx_evict_inodes+0x10/0x10 [ 286.895638][ T30] ? bch2_sync_fs+0x155/0x300 [ 286.900462][ T30] ? __pfx_bch2_put_super+0x10/0x10 [ 286.905732][ T30] generic_shutdown_super+0x139/0x2d0 [ 286.911210][ T30] bch2_kill_sb+0x41/0x50 [ 286.915600][ T30] deactivate_locked_super+0xc4/0x130 [ 286.921124][ T30] cleanup_mnt+0x41f/0x4b0 [ 286.925623][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 286.930947][ T30] task_work_run+0x24f/0x310 [ 286.935629][ T30] ? __pfx_task_work_run+0x10/0x10 [ 286.940923][ T30] ? path_umount+0x284/0xf70 [ 286.945565][ T30] ptrace_notify+0x2d2/0x380 [ 286.950255][ T30] ? __pfx_ptrace_notify+0x10/0x10 [ 286.955427][ T30] ? kmem_cache_free+0x195/0x410 [ 286.960545][ T30] ? __x64_sys_umount+0x123/0x170 [ 286.965628][ T30] syscall_exit_work+0xc7/0x1d0 [ 286.970562][ T30] syscall_exit_to_user_mode+0x24a/0x340 [ 286.976258][ T30] do_syscall_64+0x100/0x230 [ 286.981029][ T30] ? clear_bhb_loop+0x35/0x90 [ 286.985771][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.991795][ T30] RIP: 0033:0x7f962b083307 [ 286.996268][ T30] RSP: 002b:00007ffd8490d2a8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 287.004863][ T30] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f962b083307 [ 287.012943][ T30] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd8490d360 [ 287.021075][ T30] RBP: 00007ffd8490d360 R08: 0000000000000000 R09: 0000000000000000 [ 287.029180][ T30] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffd8490e3c0 [ 287.037284][ T30] R13: 000055559469d6c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 287.045307][ T30] [ 287.048450][ T30] INFO: task bch-copygc/loop:5837 blocked for more than 143 seconds. [ 287.056620][ T30] Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 [ 287.064316][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.073153][ T30] task:bch-copygc/loop state:D stack:20112 pid:5837 tgid:5837 ppid:2 flags:0x00024000 [ 287.083450][ T30] Call Trace: [ 287.086792][ T30] [ 287.089788][ T30] __schedule+0x17fb/0x4be0 [ 287.094339][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.100430][ T30] ? __pfx___schedule+0x10/0x10 [ 287.105325][ T30] ? __pfx_lock_release+0x10/0x10 [ 287.110430][ T30] ? bch2_print_allocator_stuck+0x165/0xcb0 [ 287.116373][ T30] ? bch2_print_allocator_stuck+0xc24/0xcb0 [ 287.122468][ T30] ? schedule+0x90/0x320 [ 287.126810][ T30] schedule+0x14b/0x320 [ 287.131028][ T30] __closure_sync+0x259/0x2f0 [ 287.135737][ T30] ? __closure_sync+0x149/0x2f0 [ 287.140657][ T30] ? __pfx___closure_sync+0x10/0x10 [ 287.145913][ T30] ? __bch2_wait_on_allocator+0x1d6/0x250 [ 287.151727][ T30] __bch2_write+0x562a/0x5dd0 [ 287.156467][ T30] ? __pfx_submit_bio_noacct_nocheck+0x10/0x10 [ 287.162726][ T30] ? __pfx___bch2_write+0x10/0x10 [ 287.167835][ T30] ? __bch2_read_extent+0x3075/0x4850 [ 287.173252][ T30] ? __pfx___bch2_read_extent+0x10/0x10 [ 287.178875][ T30] ? __pfx___mutex_trylock_common+0x10/0x10 [ 287.184907][ T30] ? __pfx_lock_release+0x10/0x10 [ 287.190117][ T30] bch2_write+0x9b5/0x1760 [ 287.194621][ T30] ? __pfx_bch2_write+0x10/0x10 [ 287.199593][ T30] ? bch2_trans_srcu_unlock+0x43e/0x5c0 [ 287.214050][ T30] ? bch2_data_update_read_done+0xfd/0x330 [ 287.220135][ T30] bch2_data_update_read_done+0x22e/0x330 [ 287.225903][ T30] ? __pfx_bch2_data_update_read_done+0x10/0x10 [ 287.232233][ T30] ? bch2_trans_srcu_unlock+0x44d/0x5c0 [ 287.237872][ T30] bch2_moving_ctxt_do_pending_writes+0x44c/0x8d0 [ 287.244579][ T30] ? __pfx_bch2_moving_ctxt_do_pending_writes+0x10/0x10 [ 287.251599][ T30] ? bch2_backpointer_get_key+0x434/0x970 [ 287.257460][ T30] bch2_move_ratelimit+0x76c/0xeb0 [ 287.262614][ T30] ? bch2_move_get_io_opts_one+0x292/0xb90 [ 287.268642][ T30] ? __pfx_bch2_move_ratelimit+0x10/0x10 [ 287.274384][ T30] ? bch2_path_put+0xfe1/0x2150 [ 287.279344][ T30] ? __asan_memset+0x23/0x50 [ 287.283998][ T30] bch2_evacuate_bucket+0x26b3/0x3610 [ 287.289489][ T30] ? bch2_evacuate_bucket+0x30e/0x3610 [ 287.295008][ T30] ? __pfx_bch2_evacuate_bucket+0x10/0x10 [ 287.300956][ T30] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 287.306951][ T30] ? __pfx_register_lock_class+0x10/0x10 [ 287.312608][ T30] ? stack_trace_save+0x118/0x1d0 [ 287.317760][ T30] ? bch2_backpointer_get_key+0x2b0/0x970 [ 287.323567][ T30] ? __pfx_lock_acquire+0x10/0x10 [ 287.328696][ T30] ? bch2_copygc+0x435/0x4c90 [ 287.333411][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.339483][ T30] bch2_copygc+0x42c1/0x4c90 [ 287.344136][ T30] ? bch2_copygc+0x435/0x4c90 [ 287.349023][ T30] ? __pfx_bch2_copygc+0x10/0x10 [ 287.354042][ T30] ? __pfx_lock_acquire+0x10/0x10 [ 287.359218][ T30] ? __pfx_lock_release+0x10/0x10 [ 287.364315][ T30] ? bch2_copygc+0x435/0x4c90 [ 287.369080][ T30] ? bch2_copygc_wait_amount+0xc90/0xcf0 [ 287.374784][ T30] ? bch2_copygc+0x435/0x4c90 [ 287.379561][ T30] ? bch2_trans_srcu_unlock+0x44d/0x5c0 [ 287.385158][ T30] bch2_copygc_thread+0x736/0xc10 [ 287.390268][ T30] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 287.395849][ T30] ? bch2_copygc_thread+0x1a1/0xc10 [ 287.401191][ T30] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 287.407175][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 287.412443][ T30] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 287.418453][ T30] ? __kthread_parkme+0x169/0x1d0 [ 287.423513][ T30] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 287.429217][ T30] kthread+0x2f0/0x390 [ 287.433348][ T30] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 287.438986][ T30] ? __pfx_kthread+0x10/0x10 [ 287.443623][ T30] ret_from_fork+0x4b/0x80 [ 287.448133][ T30] ? __pfx_kthread+0x10/0x10 [ 287.452788][ T30] ret_from_fork_asm+0x1a/0x30 [ 287.457645][ T30] [ 287.460713][ T30] [ 287.460713][ T30] Showing all locks held in the system: [ 287.468487][ T30] 1 lock held by khungtaskd/30: [ 287.473363][ T30] #0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 [ 287.483366][ T30] 2 locks held by getty/5582: [ 287.488110][ T30] #0: ffff8880315690a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.497995][ T30] #1: ffffc9000331b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 [ 287.508229][ T30] 2 locks held by syz-executor311/5826: [ 287.513779][ T30] #0: ffff88806dfcc0e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: deactivate_super+0xb5/0xf0 [ 287.524157][ T30] #1: ffff888077200278 (&c->state_lock){+.+.}-{4:4}, at: __bch2_fs_stop+0xfd/0x5c0 [ 287.533681][ T30] [ 287.536046][ T30] ============================================= [ 287.536046][ T30] [ 287.544566][ T30] NMI backtrace for cpu 0 [ 287.548946][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 [ 287.559464][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 287.569533][ T30] Call Trace: [ 287.572823][ T30] [ 287.575767][ T30] dump_stack_lvl+0x241/0x360 [ 287.580469][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.585717][ T30] ? __pfx__printk+0x10/0x10 [ 287.590336][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 287.595298][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.600799][ T30] ? _printk+0xd5/0x120 [ 287.604974][ T30] ? __pfx__printk+0x10/0x10 [ 287.609583][ T30] ? __wake_up_klogd+0xcc/0x110 [ 287.614458][ T30] ? __pfx__printk+0x10/0x10 [ 287.619070][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.625098][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 287.631127][ T30] watchdog+0xff6/0x1040 [ 287.635424][ T30] ? watchdog+0x1ea/0x1040 [ 287.639861][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.644550][ T30] kthread+0x2f0/0x390 [ 287.648634][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.653326][ T30] ? __pfx_kthread+0x10/0x10 [ 287.657931][ T30] ret_from_fork+0x4b/0x80 [ 287.662367][ T30] ? __pfx_kthread+0x10/0x10 [ 287.667060][ T30] ret_from_fork_asm+0x1a/0x30 [ 287.671854][ T30] [ 287.674983][ T30] Sending NMI from CPU 0 to CPUs 1: [ 287.680285][ C1] NMI backtrace for cpu 1 [ 287.680301][ C1] CPU: 1 UID: 0 PID: 17 Comm: rcu_preempt Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 [ 287.680322][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 287.680332][ C1] RIP: 0010:__lock_acquire+0x85/0x2100 [ 287.680358][ C1] Code: 89 54 24 60 89 5c 24 38 4c 89 f8 48 c1 e8 03 80 3c 30 00 74 12 4c 89 ff e8 a8 7b 8c 00 48 be 00 00 00 00 00 fc ff df 49 8b 07 <48> c7 c1 50 27 df 93 48 39 c8 0f 84 8e 13 00 00 8b 0d 35 94 05 0d [ 287.680372][ C1] RSP: 0018:ffffc900001679f0 EFLAGS: 00000046 [ 287.680395][ C1] RAX: ffffffff9a3cc980 RBX: 0000000000000000 RCX: 0000000000000000 [ 287.680408][ C1] RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffffffff8e93c858 [ 287.680420][ C1] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 [ 287.680431][ C1] R10: dffffc0000000000 R11: fffffbfff203036f R12: ffff88801bef8000 [ 287.680444][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8e93c858 [ 287.680456][ C1] FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 287.680470][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.680483][ C1] CR2: 000055dd6bcee600 CR3: 000000000e736000 CR4: 00000000003526f0 [ 287.680498][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.680509][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.680520][ C1] Call Trace: [ 287.680527][ C1] [ 287.680533][ C1] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 287.680554][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 287.680574][ C1] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.680600][ C1] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 287.680626][ C1] ? nmi_handle+0x14f/0x5a0 [ 287.680646][ C1] ? nmi_handle+0x2a/0x5a0 [ 287.680665][ C1] ? __lock_acquire+0x85/0x2100 [ 287.680683][ C1] ? default_do_nmi+0x63/0x160 [ 287.680701][ C1] ? exc_nmi+0x123/0x1f0 [ 287.680719][ C1] ? end_repeat_nmi+0xf/0x53 [ 287.680749][ C1] ? __lock_acquire+0x85/0x2100 [ 287.680767][ C1] ? __lock_acquire+0x85/0x2100 [ 287.680785][ C1] ? __lock_acquire+0x85/0x2100 [ 287.680804][ C1] [ 287.680809][ C1] [ 287.680817][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 287.680838][ C1] lock_acquire+0x1ed/0x550 [ 287.680856][ C1] ? rcu_gp_init+0xb0/0x1630 [ 287.680879][ C1] ? __pfx_lock_acquire+0x10/0x10 [ 287.680904][ C1] _raw_spin_lock_irq+0xd3/0x120 [ 287.680925][ C1] ? rcu_gp_init+0xb0/0x1630 [ 287.680945][ C1] ? __pfx__raw_spin_lock_irq+0x10/0x10 [ 287.680967][ C1] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.680987][ C1] rcu_gp_init+0xb0/0x1630 [ 287.681009][ C1] ? __pfx_rcu_gp_init+0x10/0x10 [ 287.681029][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 287.681050][ C1] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 287.681072][ C1] ? finish_swait+0xd4/0x1e0 [ 287.681090][ C1] rcu_gp_kthread+0x187/0x3b0 [ 287.681111][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 287.681131][ C1] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 287.681153][ C1] ? __kthread_parkme+0x169/0x1d0 [ 287.681172][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 287.681192][ C1] kthread+0x2f0/0x390 [ 287.681210][ C1] ? __pfx_rcu_gp_kthread+0x10/0x10 [ 287.681230][ C1] ? __pfx_kthread+0x10/0x10 [ 287.681249][ C1] ret_from_fork+0x4b/0x80 [ 287.681265][ C1] ? __pfx_kthread+0x10/0x10 [ 287.681284][ C1] ret_from_fork_asm+0x1a/0x30 [ 287.681314][ C1] [ 287.681322][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.038 msecs [ 287.682289][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 288.036183][ T30] CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #0 [ 288.046740][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 288.056813][ T30] Call Trace: [ 288.060311][ T30] [ 288.063298][ T30] dump_stack_lvl+0x241/0x360 [ 288.068017][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 288.073246][ T30] ? __pfx__printk+0x10/0x10 [ 288.077853][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 288.083885][ T30] ? vscnprintf+0x5d/0x90 [ 288.088509][ T30] panic+0x349/0x880 [ 288.092425][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 288.098596][ T30] ? __pfx_panic+0x10/0x10 [ 288.103032][ T30] ? preempt_schedule_thunk+0x1a/0x30 [ 288.108420][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 288.114591][ T30] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 288.120764][ T30] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 288.126934][ T30] watchdog+0x1035/0x1040 [ 288.131283][ T30] ? watchdog+0x1ea/0x1040 [ 288.135716][ T30] ? __pfx_watchdog+0x10/0x10 [ 288.140410][ T30] kthread+0x2f0/0x390 [ 288.144496][ T30] ? __pfx_watchdog+0x10/0x10 [ 288.149192][ T30] ? __pfx_kthread+0x10/0x10 [ 288.153799][ T30] ret_from_fork+0x4b/0x80 [ 288.158226][ T30] ? __pfx_kthread+0x10/0x10 [ 288.162827][ T30] ret_from_fork_asm+0x1a/0x30 [ 288.167623][ T30] [ 288.170820][ T30] Kernel Offset: disabled [ 288.175262][ T30] Rebooting in 86400 seconds..