./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2723201963 <...> Warning: Permanently added '10.128.1.89' (ED25519) to the list of known hosts. execve("./syz-executor2723201963", ["./syz-executor2723201963"], 0x7ffe6c5415b0 /* 10 vars */) = 0 brk(NULL) = 0x55559412f000 brk(0x55559412fd00) = 0x55559412fd00 arch_prctl(ARCH_SET_FS, 0x55559412f380) = 0 set_tid_address(0x55559412f650) = 5218 set_robust_list(0x55559412f660, 24) = 0 rseq(0x55559412fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2723201963", 4096) = 28 getrandom("\xf8\xb2\x1c\x61\x44\x91\xee\x84", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55559412fd00 brk(0x555594150d00) = 0x555594150d00 brk(0x555594151000) = 0x555594151000 mprotect(0x7f4a03170000, 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.8QfFEf", 0700) = 0 chmod("./syzkaller.8QfFEf", 0777) = 0 chdir("./syzkaller.8QfFEf") = 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 5220 attached [pid 5220] set_robust_list(0x55559412f660, 24 [pid 5218] <... clone resumed>, child_tidptr=0x55559412f650) = 5220 [pid 5220] <... set_robust_list resumed>) = 0 [pid 5220] chdir("./0") = 0 [pid 5220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5220] setpgid(0, 0) = 0 [pid 5220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5220] write(3, "1000", 4) = 4 [pid 5220] close(3) = 0 [pid 5220] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5220] write(1, "executing program\n", 18executing program ) = 18 [pid 5220] memfd_create("syzkaller", 0) = 3 [pid 5220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f49fac00000 [pid 5220] 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 5220] munmap(0x7f49fac00000, 138412032) = 0 [pid 5220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5220] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5220] close(3) = 0 [pid 5220] close(4) = 0 [pid 5220] mkdir("./file0", 0777) = 0 [ 65.674496][ T5220] loop0: detected capacity change from 0 to 32768 [ 65.709180][ T5220] ======================================================= [ 65.709180][ T5220] WARNING: The mand mount option has been deprecated and [ 65.709180][ T5220] and is ignored by this kernel. Remove the mand [ 65.709180][ T5220] option from the mount to silence this warning. [ 65.709180][ T5220] ======================================================= [ 65.780474][ T5220] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,compression=zstd,norecovery,recovery_pass_last=check_dirents,nojournal_transaction_names,version_upgrade=none [ 65.799857][ T5220] bcachefs (loop0): recovering from clean shutdown, journal seq 7 [ 65.815352][ T5220] invalid bkey u64s 11 type alloc_v4 0:14:0 len 0 ver 0: [ 65.815374][ T5220] gen 0 oldest_gen 0 data_type journal [ 65.815380][ T5220] journal_seq 1 [ 65.815385][ T5220] need_discard 1 [ 65.815391][ T5220] need_inc_gen 1 [ 65.815396][ T5220] dirty_sectors 256 [ 65.815401][ T5220] stripe_sectors 0 [ 65.815406][ T5220] cached_sectors 0 [ 65.815411][ T5220] stripe 67108864 [ 65.815416][ T5220] stripe_redundancy 0 [ 65.815421][ T5220] io_time[READ] 1 [ 65.815426][ T5220] io_time[WRITE] 1 [ 65.815431][ T5220] fragmentation 0 [ 65.815436][ T5220] bp_start 8 [ 65.815441][ T5220] [ 65.815445][ T5220] invalid data type (got 2 should be 7): delete?, fixing [ 65.892933][ T5220] bcachefs (loop0): accounting_read... done [ 65.899127][ T5220] bcachefs (loop0): alloc_read... done [ 65.904664][ T5220] bcachefs (loop0): stripes_read... done [ 65.910383][ T5220] bcachefs (loop0): snapshots_read... done [ 65.919710][ T5220] bcachefs (loop0): going read-write [pid 5220] mount("/dev/loop0", "./file0", "bcachefs", MS_NODEV|MS_MANDLOCK, "errors=continue,inodes_32bit,compression=zstd,norecovery,version_upgrade=none,recovery_pass_last=che"...) = 0 [pid 5220] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5220] chdir("./file0") = 0 [pid 5220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5220] ioctl(4, LOOP_CLR_FD) = 0 [pid 5220] close(4) = 0 [pid 5220] exit_group(0) = ? [pid 5220] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5220, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=32 /* 0.32 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 [ 65.930963][ T5220] bcachefs (loop0): Fixed errors, running fsck a second time to verify fs is clean [ 65.946018][ T5220] bcachefs (loop0): done starting filesystem 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, 0x5555941306f0 /* 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 [ 66.042247][ T5218] bcachefs (loop0): shutting down [ 66.047571][ T5218] bcachefs (loop0): going read-only [ 66.053043][ T5218] bcachefs (loop0): finished waiting for writes to stop [ 82.095025][ T941] cfg80211: failed to load regulatory.db [ 96.184016][ T5229] Allocator stuck? Waited for 30 seconds [ 96.184030][ T5229] Allocator debug: [ 96.184035][ T5229] capacity1536 [ 96.184040][ T5229] reserved 31232 [ 96.184044][ T5229] hidden 0 [ 96.184049][ T5229] btree 0 [ 96.184054][ T5229] data 0 [ 96.184058][ T5229] cached 0 [ 96.184063][ T5229] reserved 0 [ 96.184067][ T5229] online_reserved 24 [ 96.184072][ T5229] nr_inodes 0 [ 96.184077][ T5229] [ 96.184081][ T5229] freelist_wait waiting [ 96.184086][ T5229] open buckets allocated1 [ 96.184090][ T5229] open buckets total 1024 [ 96.184095][ T5229] open_buckets_wait empty [ 96.184099][ T5229] open_buckets_btree 0 [ 96.184104][ T5229] open_buckets_user 0 [ 96.184108][ T5229] btree reserve cache 0 [ 96.184113][ T5229] [ 96.184117][ T5229] Dev 0: [ 96.184121][ T5229] buckets sectors fragmented [ 96.184127][ T5229] free 0 0 0 [ 96.184132][ T5229] sb 0 0 0 [ 96.184137][ T5229] journal 0 0 0 [ 96.184143][ T5229] btree 0 0 0 [ 96.184148][ T5229] user 0 0 0 [ 96.184154][ T5229] cached 0 0 0 [ 96.184159][ T5229] parity 0 0 0 [ 96.184164][ T5229] stripe 0 0 0 [ 96.184170][ T5229] need_gc_gens 0 0 0 [ 96.184175][ T5229] need_discard 0 0 0 [ 96.184180][ T5229] unstriped 0 0 0 [ 96.184186][ T5229] capacity 128 [ 96.184190][ T5229] [ 96.184194][ T5229] reserves: [ 96.184199][ T5229] stripe 60 [ 96.184203][ T5229] normal 58 [ 96.184208][ T5229] copygc 56 [ 96.184213][ T5229] btree 28 [ 96.184217][ T5229] btree_copygc 0 [ 96.184222][ T5229] reclaim 0 [ 96.184227][ T5229] interior_updates 0 [ 96.184231][ T5229] [ 96.184235][ T5229] open buckets 0 [ 96.184240][ T5229] buckets to invalidate 0 [ 96.184244][ T5229] [ 96.184249][ T5229] Copygc debug: [ 96.184253][ T5229] running: 1 [ 96.184257][ T5229] copygc_wait:0 [ 96.184262][ T5229] copygc_wait_at:0 [ 96.184267][ T5229] Currently waiting for:0 B [ 96.184271][ T5229] Currently waiting since:640 KiB [ 96.184276][ T5229] Currently calculated wait:0 B [ 96.184281][ T5229] [ 96.184285][ T5229] Journal debug: [ 96.184289][ T5229] flags: running,may_skip_flush [ 96.184294][ T5229] dirty journal entries: 0/32768 [ 96.184299][ T5229] seq: 8 [ 96.184304][ T5229] seq_ondisk: 8 [ 96.184308][ T5229] last_seq: 9 [ 96.184313][ T5229] last_seq_ondisk: 8 [ 96.184317][ T5229] flushed_seq_ondisk: 8 [ 96.184322][ T5229] watermark: stripe [ 96.184327][ T5229] each entry reserved: 321 [ 96.184331][ T5229] nr flush writes: 1 [ 96.184336][ T5229] nr noflush writes: 0 [ 96.184341][ T5229] average write size: 1.23 KiB [ 96.184346][ T5229] nr direct reclaim: 0 [ 96.184350][ T5229] nr background reclaim: 0 [ 96.184355][ T5229] reclaim kicked: 0 [ 96.184359][ T5229] reclaim runs in: 0 ms [ 96.184364][ T5229] blocked: 0 [ 96.184369][ T5229] current entry sectors: 256 [ 96.184373][ T5229] current entry error: ok [ 96.184378][ T5229] current entry: closed [ 96.184383][ T5229] unwritten entries: [ 96.184397][ T5229] last buf closed [ 96.184401][ T5229] space: [ 96.184406][ T5229] discarded 256:1536 [ 96.184411][ T5229] clean ondisk 256:1536 [ 96.184415][ T5229] clean 256:1536 [ 96.184420][ T5229] total 256:2048 [ 96.184425][ T5229] dev 0: [ 96.184429][ T5229] nr 8 [ 96.184434][ T5229] bucket size 256 [ 96.184438][ T5229] available 6:248 [ 96.184443][ T5229] discard_idx 0 [ 96.184448][ T5229] dirty_ondisk 0 (seq 8) [ 96.184453][ T5229] dirty_idx 0 (seq 8) [ 96.184458][ T5229] cur_idx 0 (seq 8) [ 96.184462][ T5229] [ 286.894982][ T30] INFO: task syz-executor272:5218 blocked for more than 143 seconds. [ 286.903316][ T30] Not tainted 6.11.0-syzkaller-02520-gadfc3ded5c33 #0 [ 286.910593][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.919304][ T30] task:syz-executor272 state:D stack:24992 pid:5218 tgid:5218 ppid:5215 flags:0x00004002 [ 286.929619][ T30] Call Trace: [ 286.933068][ T30] [ 286.936127][ T30] __schedule+0x17ae/0x4a10 [ 286.940645][ T30] ? __pfx___schedule+0x10/0x10 [ 286.945540][ T30] ? __pfx_lock_release+0x10/0x10 [ 286.950601][ T30] ? schedule+0x90/0x320 [ 286.954948][ T30] schedule+0x14b/0x320 [ 286.959130][ T30] schedule_timeout+0xb0/0x310 [ 286.963953][ T30] ? __pfx_schedule_timeout+0x10/0x10 [ 286.969432][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 286.975472][ T30] ? wait_for_completion+0x2fe/0x620 [ 286.980789][ T30] ? wait_for_completion+0x2fe/0x620 [ 286.986127][ T30] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.991342][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 286.996584][ T30] ? wait_for_completion+0x2fe/0x620 [ 287.001880][ T30] wait_for_completion+0x355/0x620 [ 287.007132][ T30] ? __pfx_wait_for_completion+0x10/0x10 [ 287.012839][ T30] ? synchronize_rcu+0x11b/0x360 [ 287.017794][ T30] ? kthread_unpark+0x17b/0x210 [ 287.022634][ T30] kthread_stop+0x19e/0x640 [ 287.027188][ T30] bch2_copygc_stop+0x4f/0x150 [ 287.032050][ T30] __bch2_fs_read_only+0x47/0x430 [ 287.037153][ T30] bch2_fs_read_only+0xb57/0x1220 [ 287.042194][ T30] ? __pfx_bch2_fs_read_only+0x10/0x10 [ 287.047691][ T30] ? __bch2_print+0x17a/0x220 [ 287.052377][ T30] ? down_write+0x18c/0x220 [ 287.056946][ T30] ? __pfx_down_write+0x10/0x10 [ 287.061821][ T30] ? hook_sb_delete+0xa7f/0xbb0 [ 287.066726][ T30] ? do_raw_spin_unlock+0x13c/0x8b0 [ 287.071949][ T30] __bch2_fs_stop+0x105/0x540 [ 287.076696][ T30] ? __pfx_hook_sb_delete+0x10/0x10 [ 287.081995][ T30] ? __pfx___bch2_fs_stop+0x10/0x10 [ 287.087314][ T30] ? __pfx_evict_inodes+0x10/0x10 [ 287.092366][ T30] ? bch2_sync_fs+0x155/0x300 [ 287.097237][ T30] ? __pfx_bch2_put_super+0x10/0x10 [ 287.102450][ T30] generic_shutdown_super+0x139/0x2d0 [ 287.107870][ T30] bch2_kill_sb+0x41/0x50 [ 287.112228][ T30] deactivate_locked_super+0xc4/0x130 [ 287.117665][ T30] cleanup_mnt+0x41f/0x4b0 [ 287.122093][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 287.127328][ T30] task_work_run+0x24f/0x310 [ 287.131927][ T30] ? __pfx_task_work_run+0x10/0x10 [ 287.137132][ T30] ? path_umount+0x284/0xf70 [ 287.141740][ T30] ptrace_notify+0x2d2/0x380 [ 287.146414][ T30] ? __pfx_path_umount+0x10/0x10 [ 287.151365][ T30] ? __pfx_ptrace_notify+0x10/0x10 [ 287.156703][ T30] ? __x64_sys_umount+0x123/0x170 [ 287.161752][ T30] ? __pfx___x64_sys_umount+0x10/0x10 [ 287.167181][ T30] syscall_exit_work+0xc6/0x190 [ 287.172044][ T30] syscall_exit_to_user_mode+0x279/0x370 [ 287.177727][ T30] do_syscall_64+0x100/0x230 [ 287.182342][ T30] ? clear_bhb_loop+0x35/0x90 [ 287.187085][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.193030][ T30] RIP: 0033:0x7f4a030f7347 [ 287.197464][ T30] RSP: 002b:00007fff2b073678 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 287.206042][ T30] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f4a030f7347 [ 287.214068][ T30] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff2b073730 [ 287.222129][ T30] RBP: 00007fff2b073730 R08: 0000000000000000 R09: 0000000000000000 [ 287.230138][ T30] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fff2b074790 [ 287.238162][ T30] R13: 00005555941306c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 287.246179][ T30] [ 287.249346][ T30] INFO: task bch-copygc/loop:5229 blocked for more than 143 seconds. [ 287.257450][ T30] Not tainted 6.11.0-syzkaller-02520-gadfc3ded5c33 #0 [ 287.264772][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.273464][ T30] task:bch-copygc/loop state:D stack:19568 pid:5229 tgid:5229 ppid:2 flags:0x00024000 [ 287.283669][ T30] Call Trace: [ 287.286938][ T30] [ 287.289874][ T30] __schedule+0x17ae/0x4a10 [ 287.294463][ T30] ? __pfx___schedule+0x10/0x10 [ 287.299320][ T30] ? bch2_print_allocator_stuck+0x165/0xcb0 [ 287.305255][ T30] ? __pfx_lock_release+0x10/0x10 [ 287.310291][ T30] ? bch2_print_allocator_stuck+0x165/0xcb0 [ 287.316246][ T30] ? bch2_print_allocator_stuck+0xc24/0xcb0 [ 287.322154][ T30] ? schedule+0x90/0x320 [ 287.326448][ T30] schedule+0x14b/0x320 [ 287.330621][ T30] __closure_sync+0x259/0x2f0 [ 287.335356][ T30] ? __closure_sync+0x149/0x2f0 [ 287.340213][ T30] ? __pfx___closure_sync+0x10/0x10 [ 287.345566][ T30] ? __bch2_wait_on_allocator+0x1d6/0x250 [ 287.351308][ T30] __bch2_write+0x55a7/0x5d20 [ 287.356058][ T30] ? __pfx_seqcount_lockdep_reader_access+0x10/0x10 [ 287.362700][ T30] ? __pfx_submit_bio_noacct_nocheck+0x10/0x10 [ 287.368933][ T30] ? __pfx___bch2_write+0x10/0x10 [ 287.374021][ T30] ? __bch2_read_extent+0x3002/0x4690 [ 287.379397][ T30] ? __pfx___bch2_read_extent+0x10/0x10 [ 287.385000][ T30] ? __pfx_lock_release+0x10/0x10 [ 287.390038][ T30] bch2_write+0x947/0x1670 [ 287.394519][ T30] ? __pfx_bch2_write+0x10/0x10 [ 287.399374][ T30] ? bch2_trans_srcu_unlock+0x43b/0x5b0 [ 287.404959][ T30] ? bch2_data_update_read_done+0xfd/0x330 [ 287.410793][ T30] bch2_data_update_read_done+0x22e/0x330 [ 287.416585][ T30] ? __pfx_bch2_data_update_read_done+0x10/0x10 [ 287.422910][ T30] ? bch2_trans_srcu_unlock+0x44a/0x5b0 [ 287.428472][ T30] bch2_moving_ctxt_do_pending_writes+0x44c/0x8d0 [ 287.434949][ T30] ? __pfx_bch2_moving_ctxt_do_pending_writes+0x10/0x10 [ 287.441901][ T30] ? bch2_backpointer_get_key+0x434/0x970 [ 287.447716][ T30] bch2_move_ratelimit+0x76c/0xeb0 [ 287.452877][ T30] ? bch2_move_get_io_opts_one+0x282/0xaf0 [ 287.458717][ T30] ? __pfx_bch2_move_ratelimit+0x10/0x10 [ 287.464420][ T30] ? bch2_path_put+0xe09/0x2140 [ 287.469292][ T30] ? __asan_memset+0x23/0x50 [ 287.473947][ T30] ? bch2_trans_iter_exit+0x295/0x3e0 [ 287.479329][ T30] bch2_evacuate_bucket+0x2618/0x34d0 [ 287.484772][ T30] ? bch2_evacuate_bucket+0x313/0x34d0 [ 287.490247][ T30] ? __pfx_bch2_evacuate_bucket+0x10/0x10 [ 287.496016][ T30] ? stack_trace_save+0x118/0x1d0 [ 287.501066][ T30] ? bch2_backpointer_get_key+0x2b0/0x970 [ 287.506853][ T30] ? __pfx_lock_acquire+0x10/0x10 [ 287.511917][ T30] ? bch2_copygc+0x418/0x4650 [ 287.516647][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.522643][ T30] bch2_copygc+0x3a03/0x4650 [ 287.527315][ T30] ? bch2_copygc+0x418/0x4650 [ 287.532020][ T30] ? __pfx_bch2_copygc+0x10/0x10 [ 287.537078][ T30] ? __pfx_lock_acquire+0x10/0x10 [ 287.542155][ T30] ? __pfx_lock_release+0x10/0x10 [ 287.547325][ T30] ? bch2_copygc+0x418/0x4650 [ 287.552006][ T30] ? bch2_copygc_wait_amount+0xc90/0xcf0 [ 287.557713][ T30] ? bch2_copygc+0x418/0x4650 [ 287.562396][ T30] ? bch2_trans_srcu_unlock+0x44a/0x5b0 [ 287.568001][ T30] bch2_copygc_thread+0x737/0xc20 [ 287.573126][ T30] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 287.578686][ T30] ? bch2_copygc_thread+0x1a2/0xc20 [ 287.583982][ T30] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 287.589893][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 287.595161][ T30] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 287.601063][ T30] ? __kthread_parkme+0x169/0x1d0 [ 287.606131][ T30] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 287.611688][ T30] kthread+0x2f0/0x390 [ 287.615798][ T30] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 287.621363][ T30] ? __pfx_kthread+0x10/0x10 [ 287.626013][ T30] ret_from_fork+0x4b/0x80 [ 287.630436][ T30] ? __pfx_kthread+0x10/0x10 [ 287.635061][ T30] ret_from_fork_asm+0x1a/0x30 [ 287.639845][ T30] [ 287.643004][ T30] [ 287.643004][ T30] Showing all locks held in the system: [ 287.650728][ T30] 1 lock held by khungtaskd/30: [ 287.655608][ T30] #0: ffffffff8e738660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 287.665572][ T30] 2 locks held by getty/4971: [ 287.670248][ T30] #0: ffff88807bd400a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.680143][ T30] #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 [ 287.690321][ T30] 2 locks held by syz-executor272/5218: [ 287.695892][ T30] #0: ffff88807c1a40e0 (&type->s_umount_key#44){+.+.}-{3:3}, at: deactivate_super+0xb5/0xf0 [ 287.706140][ T30] #1: ffff888078c80278 (&c->state_lock){+.+.}-{3:3}, at: __bch2_fs_stop+0xfd/0x540 [ 287.715601][ T30] [ 287.717939][ T30] ============================================= [ 287.717939][ T30] [ 287.726404][ T30] NMI backtrace for cpu 1 [ 287.730743][ T30] CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-02520-gadfc3ded5c33 #0 [ 287.740892][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 287.750937][ T30] Call Trace: [ 287.754297][ T30] [ 287.757219][ T30] dump_stack_lvl+0x241/0x360 [ 287.761891][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.767083][ T30] ? __pfx__printk+0x10/0x10 [ 287.771675][ T30] ? vprintk_emit+0x667/0x7c0 [ 287.776358][ T30] ? __pfx_vprintk_emit+0x10/0x10 [ 287.781392][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 287.786338][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.791833][ T30] ? _printk+0xd5/0x120 [ 287.795979][ T30] ? __pfx__printk+0x10/0x10 [ 287.800558][ T30] ? __wake_up_klogd+0xcc/0x110 [ 287.805399][ T30] ? __pfx__printk+0x10/0x10 [ 287.809981][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.815952][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 287.822042][ T30] watchdog+0xff4/0x1040 [ 287.826315][ T30] ? watchdog+0x1ea/0x1040 [ 287.830747][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.835424][ T30] kthread+0x2f0/0x390 [ 287.839493][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.844164][ T30] ? __pfx_kthread+0x10/0x10 [ 287.848740][ T30] ret_from_fork+0x4b/0x80 [ 287.853151][ T30] ? __pfx_kthread+0x10/0x10 [ 287.857727][ T30] ret_from_fork_asm+0x1a/0x30 [ 287.862491][ T30] [ 287.865582][ T30] Sending NMI from CPU 1 to CPUs 0: [ 287.870857][ C0] NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 [ 287.871836][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 287.886790][ T30] CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-02520-gadfc3ded5c33 #0 [ 287.896940][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 [ 287.906976][ T30] Call Trace: [ 287.910236][ T30] [ 287.913150][ T30] dump_stack_lvl+0x241/0x360 [ 287.917814][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.922999][ T30] ? __pfx__printk+0x10/0x10 [ 287.927680][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 287.933745][ T30] ? vscnprintf+0x5d/0x90 [ 287.938077][ T30] panic+0x349/0x860 [ 287.941954][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 287.948111][ T30] ? __pfx_panic+0x10/0x10 [ 287.952557][ T30] ? irq_work_queue+0xd1/0x150 [ 287.957317][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.963303][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.969268][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.975233][ T30] ? nmi_trigger_cpumask_backtrace+0x251/0x320 [ 287.981371][ T30] watchdog+0x1033/0x1040 [ 287.985687][ T30] ? watchdog+0x1ea/0x1040 [ 287.990086][ T30] ? __pfx_watchdog+0x10/0x10 [ 287.994741][ T30] kthread+0x2f0/0x390 [ 287.998802][ T30] ? __pfx_watchdog+0x10/0x10 [ 288.003459][ T30] ? __pfx_kthread+0x10/0x10 [ 288.008024][ T30] ret_from_fork+0x4b/0x80 [ 288.012423][ T30] ? __pfx_kthread+0x10/0x10 [ 288.017000][ T30] ret_from_fork_asm+0x1a/0x30 [ 288.021750][ T30] [ 288.024923][ T30] Kernel Offset: disabled [ 288.029262][ T30] Rebooting in 86400 seconds..