./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2289489273 <...> Warning: Permanently added '10.128.10.4' (ED25519) to the list of known hosts. execve("./syz-executor2289489273", ["./syz-executor2289489273"], 0x7ffdc15f82f0 /* 10 vars */) = 0 brk(NULL) = 0x555586950000 brk(0x555586950d00) = 0x555586950d00 arch_prctl(ARCH_SET_FS, 0x555586950380) = 0 set_tid_address(0x555586950650) = 5837 set_robust_list(0x555586950660, 24) = 0 rseq(0x555586950ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2289489273", 4096) = 28 getrandom("\xd5\xdb\x49\x33\xe5\x27\xd5\x25", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555586950d00 brk(0x555586971d00) = 0x555586971d00 brk(0x555586972000) = 0x555586972000 mprotect(0x7f303b613000, 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.iNXmnJ", 0700) = 0 chmod("./syzkaller.iNXmnJ", 0777) = 0 chdir("./syzkaller.iNXmnJ") = 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 5839 attached [pid 5839] set_robust_list(0x555586950660, 24) = 0 [pid 5839] chdir("./0") = 0 [pid 5837] <... clone resumed>, child_tidptr=0x555586950650) = 5839 [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 [pid 5839] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5839] write(1, "executing program\n", 18executing program ) = 18 [pid 5839] memfd_create("syzkaller", 0) = 3 [pid 5839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3033000000 [pid 5839] 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 5839] munmap(0x7f3033000000, 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 [ 160.025536][ T5839] loop0: detected capacity change from 0 to 32768 [ 160.059429][ T5839] bcachefs (/dev/loop0): error reading default superblock: checksum error, type none: got should be [ 160.110330][ T5839] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,version_upgrade=none [ 160.125068][ T5839] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 160.143323][ T5839] bcachefs (loop0): accounting_read... done [ 160.150292][ T5839] bcachefs (loop0): alloc_read... done [pid 5839] mount("/dev/loop0", "./file0", "bcachefs", MS_STRICTATIME, "errors=continue,errors=fix_safe,journal_transaction_names,version_upgrade=none,smackfshat=*,obj_type"...) = 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) = 4 [ 160.155849][ T5839] bcachefs (loop0): stripes_read... done [ 160.161598][ T5839] bcachefs (loop0): snapshots_read... done [ 160.169371][ T5839] bcachefs (loop0): journal_replay... done [ 160.175217][ T5839] bcachefs (loop0): resume_logged_ops... done [ 160.181393][ T5839] bcachefs (loop0): delete_dead_inodes... done [ 160.188163][ T5839] bcachefs (loop0): going read-write [ 160.198962][ T5839] bcachefs (loop0): done starting filesystem [pid 5839] ioctl(4, LOOP_CLR_FD) = 0 [pid 5839] close(4) = 0 [pid 5839] exit_group(0) = ? [pid 5839] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5839, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=21 /* 0.21 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, 0x5555869516f0 /* 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 [ 160.295239][ T5837] bcachefs (loop0): shutting down [ 160.300872][ T5837] bcachefs (loop0): going read-only [ 160.306202][ T5837] bcachefs (loop0): finished waiting for writes to stop [ 190.617988][ T5848] Allocator stuck? Waited for 30 seconds [ 190.618015][ T5848] Allocator debug: [ 190.618020][ T5848] capacity1536 [ 190.618025][ T5848] reserved 31232 [ 190.618030][ T5848] hidden 0 [ 190.618035][ T5848] btree 0 [ 190.618040][ T5848] data 0 [ 190.618045][ T5848] cached 0 [ 190.618049][ T5848] reserved 0 [ 190.618054][ T5848] online_reserved 24 [ 190.618059][ T5848] nr_inodes 0 [ 190.618064][ T5848] [ 190.618068][ T5848] freelist_wait waiting [ 190.618073][ T5848] open buckets allocated1 [ 190.618078][ T5848] open buckets total 1024 [ 190.618083][ T5848] open_buckets_wait empty [ 190.618088][ T5848] open_buckets_btree 0 [ 190.618092][ T5848] open_buckets_user 0 [ 190.618097][ T5848] btree reserve cache 0 [ 190.618102][ T5848] [ 190.618106][ T5848] Dev 0: [ 190.618111][ T5848] buckets sectors fragmented [ 190.618116][ T5848] free 0 0 0 [ 190.618121][ T5848] sb 0 0 0 [ 190.618127][ T5848] journal 0 0 0 [ 190.618132][ T5848] btree 0 0 0 [ 190.618137][ T5848] user 0 0 0 [ 190.618143][ T5848] cached 0 0 0 [ 190.618148][ T5848] parity 0 0 0 [ 190.618153][ T5848] stripe 0 0 0 [ 190.618159][ T5848] need_gc_gens 0 0 0 [ 190.618164][ T5848] need_discard 0 0 0 [ 190.618170][ T5848] unstriped 0 0 0 [ 190.618175][ T5848] capacity 128 [ 190.618180][ T5848] [ 190.618184][ T5848] reserves: [ 190.618189][ T5848] stripe 60 [ 190.618193][ T5848] normal 58 [ 190.618198][ T5848] copygc 56 [ 190.618203][ T5848] btree 28 [ 190.618208][ T5848] btree_copygc 0 [ 190.618212][ T5848] reclaim 0 [ 190.618217][ T5848] interior_updates 0 [ 190.618222][ T5848] [ 190.618226][ T5848] open buckets 0 [ 190.618231][ T5848] buckets to invalidate 0 [ 190.618236][ T5848] [ 190.618240][ T5848] Copygc debug: [ 190.618245][ T5848] running: 0 [ 190.618249][ T5848] copygc_wait:0 [ 190.618254][ T5848] copygc_wait_at:0 [ 190.618259][ T5848] Currently waiting for:0 B [ 190.618264][ T5848] Currently waiting since:640 KiB [ 190.618269][ T5848] Currently calculated wait:0 B [ 190.618274][ T5848] [ 190.618278][ T5848] Journal debug: [ 190.618283][ T5848] flags: replay_done,running,may_skip_flush,need_flush_write [ 190.618288][ T5848] dirty journal entries: 0/32768 [ 190.618293][ T5848] seq: 10 [ 190.618298][ T5848] seq_ondisk: 10 [ 190.618303][ T5848] last_seq: 11 [ 190.618307][ T5848] last_seq_ondisk: 11 [ 190.618312][ T5848] flushed_seq_ondisk: 10 [ 190.618317][ T5848] watermark: stripe [ 190.618322][ T5848] each entry reserved: 321 [ 190.618327][ T5848] nr flush writes: 0 [ 190.618332][ T5848] nr noflush writes: 0 [ 190.618336][ T5848] average write size: 0 B [ 190.618341][ T5848] nr direct reclaim: 0 [ 190.618346][ T5848] nr background reclaim: 0 [ 190.618351][ T5848] reclaim kicked: 0 [ 190.618355][ T5848] reclaim runs in: 0 ms [ 190.618360][ T5848] blocked: 0 [ 190.618365][ T5848] current entry sectors: 256 [ 190.618370][ T5848] current entry error: ok [ 190.618375][ T5848] current entry: closed [ 190.618380][ T5848] unwritten entries: [ 190.618384][ T5848] last buf closed [ 190.618389][ T5848] space: [ 190.618393][ T5848] discarded 256:1792 [ 190.618398][ T5848] clean ondisk 256:1792 [ 190.618403][ T5848] clean 256:1792 [ 190.618408][ T5848] total 256:2048 [ 190.618413][ T5848] dev 0: [ 190.618418][ T5848] nr 8 [ 190.618422][ T5848] bucket size 256 [ 190.618427][ T5848] available 6:256 [ 190.618432][ T5848] discard_idx 0 [ 190.618437][ T5848] dirty_ondisk 0 (seq 0) [ 190.618442][ T5848] dirty_idx 0 (seq 0) [ 190.618447][ T5848] cur_idx 0 (seq 0) [ 190.618452][ T5848] [ 429.967434][ T30] INFO: task syz-executor228:5837 blocked for more than 143 seconds. [ 429.975620][ T30] Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 [ 429.983553][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.992300][ T30] task:syz-executor228 state:D stack:23840 pid:5837 tgid:5837 ppid:5834 flags:0x00004002 [ 430.002731][ T30] Call Trace: [ 430.006017][ T30] [ 430.008989][ T30] __schedule+0x17fb/0x4be0 [ 430.013562][ T30] ? __pfx___schedule+0x10/0x10 [ 430.018541][ T30] ? __pfx_lock_release+0x10/0x10 [ 430.023593][ T30] ? schedule+0x90/0x320 [ 430.027883][ T30] schedule+0x14b/0x320 [ 430.032054][ T30] schedule_timeout+0xb0/0x290 [ 430.036896][ T30] ? __pfx_schedule_timeout+0x10/0x10 [ 430.042525][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 430.048583][ T30] ? wait_for_completion+0x2fe/0x620 [ 430.053875][ T30] ? wait_for_completion+0x2fe/0x620 [ 430.059307][ T30] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.064538][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 430.069795][ T30] ? wait_for_completion+0x2fe/0x620 [ 430.075130][ T30] wait_for_completion+0x355/0x620 [ 430.080353][ T30] ? __pfx_wait_for_completion+0x10/0x10 [ 430.085999][ T30] ? synchronize_rcu+0x11b/0x360 [ 430.091041][ T30] ? kthread_unpark+0xd0/0x290 [ 430.095818][ T30] kthread_stop+0x19e/0x640 [ 430.100440][ T30] bch2_copygc_stop+0x4f/0x150 [ 430.105225][ T30] __bch2_fs_read_only+0x47/0x450 [ 430.110292][ T30] bch2_fs_read_only+0xb57/0x1200 [ 430.115337][ T30] ? __pfx_bch2_fs_read_only+0x10/0x10 [ 430.120912][ T30] ? __bch2_print+0x17a/0x220 [ 430.125616][ T30] ? down_write+0x18c/0x220 [ 430.130163][ T30] ? __pfx_down_write+0x10/0x10 [ 430.135045][ T30] ? hook_sb_delete+0xaa0/0xbd0 [ 430.140016][ T30] __bch2_fs_stop+0x105/0x5c0 [ 430.144706][ T30] ? __pfx___bch2_fs_stop+0x10/0x10 [ 430.149941][ T30] ? __pfx_evict_inodes+0x10/0x10 [ 430.154978][ T30] ? bch2_sync_fs+0x155/0x300 [ 430.159786][ T30] ? __pfx_bch2_put_super+0x10/0x10 [ 430.165051][ T30] generic_shutdown_super+0x139/0x2d0 [ 430.170576][ T30] bch2_kill_sb+0x41/0x50 [ 430.174931][ T30] deactivate_locked_super+0xc4/0x130 [ 430.180437][ T30] cleanup_mnt+0x41f/0x4b0 [ 430.184905][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 430.190171][ T30] task_work_run+0x24f/0x310 [ 430.194783][ T30] ? __pfx_task_work_run+0x10/0x10 [ 430.200004][ T30] ? path_umount+0x284/0xf70 [ 430.204622][ T30] ptrace_notify+0x2d2/0x380 [ 430.209267][ T30] ? __pfx_ptrace_notify+0x10/0x10 [ 430.214395][ T30] ? kmem_cache_free+0x195/0x410 [ 430.219454][ T30] ? __x64_sys_umount+0x123/0x170 [ 430.224497][ T30] syscall_exit_work+0xc7/0x1d0 [ 430.229393][ T30] syscall_exit_to_user_mode+0x24a/0x340 [ 430.235050][ T30] do_syscall_64+0x100/0x230 [ 430.239882][ T30] ? clear_bhb_loop+0x35/0x90 [ 430.244606][ T30] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.250574][ T30] RIP: 0033:0x7f303b59b387 [ 430.255024][ T30] RSP: 002b:00007fffb494e878 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 430.263576][ T30] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f303b59b387 [ 430.271635][ T30] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffb494e930 [ 430.279748][ T30] RBP: 00007fffb494e930 R08: 0000000000000000 R09: 0000000000000000 [ 430.287764][ T30] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007fffb494f990 [ 430.295731][ T30] R13: 00005555869516c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 430.303821][ T30] [ 430.306904][ T30] INFO: task bch-copygc/loop:5848 blocked for more than 143 seconds. [ 430.315025][ T30] Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 [ 430.322718][ T30] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.331421][ T30] task:bch-copygc/loop state:D stack:20112 pid:5848 tgid:5848 ppid:2 flags:0x00024000 [ 430.341676][ T30] Call Trace: [ 430.344964][ T30] [ 430.348049][ T30] __schedule+0x17fb/0x4be0 [ 430.352578][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 430.358617][ T30] ? __pfx___schedule+0x10/0x10 [ 430.363486][ T30] ? __pfx_lock_release+0x10/0x10 [ 430.368558][ T30] ? bch2_print_allocator_stuck+0x165/0xcb0 [ 430.374492][ T30] ? bch2_print_allocator_stuck+0xc24/0xcb0 [ 430.380444][ T30] ? schedule+0x90/0x320 [ 430.384703][ T30] schedule+0x14b/0x320 [ 430.388943][ T30] __closure_sync+0x259/0x2f0 [ 430.393641][ T30] ? __closure_sync+0x149/0x2f0 [ 430.399076][ T30] ? __pfx___closure_sync+0x10/0x10 [ 430.404299][ T30] ? __bch2_wait_on_allocator+0x1d6/0x250 [ 430.410084][ T30] __bch2_write+0x562a/0x5dd0 [ 430.414799][ T30] ? __pfx_validate_chain+0x10/0x10 [ 430.420058][ T30] ? mark_lock+0x9a/0x360 [ 430.424401][ T30] ? __pfx___bch2_write+0x10/0x10 [ 430.429486][ T30] ? __pfx_validate_chain+0x10/0x10 [ 430.434699][ T30] ? __pfx_validate_chain+0x10/0x10 [ 430.439968][ T30] ? __lock_acquire+0x1397/0x2100 [ 430.445023][ T30] bch2_write+0x9b5/0x1760 [ 430.449492][ T30] ? mark_lock+0x9a/0x360 [ 430.453840][ T30] ? __pfx_bch2_write+0x10/0x10 [ 430.458745][ T30] ? bch2_data_update_read_done+0xfd/0x330 [ 430.464575][ T30] bch2_data_update_read_done+0x22e/0x330 [ 430.470338][ T30] ? __pfx_bch2_data_update_read_done+0x10/0x10 [ 430.476594][ T30] ? bch2_trans_srcu_unlock+0x57/0x5c0 [ 430.482097][ T30] bch2_moving_ctxt_do_pending_writes+0x44c/0x8d0 [ 430.488642][ T30] ? __pfx_bch2_moving_ctxt_do_pending_writes+0x10/0x10 [ 430.495607][ T30] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 430.501632][ T30] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 430.508006][ T30] ? finish_wait+0xd4/0x1e0 [ 430.512507][ T30] move_buckets_wait+0x2ba/0x1290 [ 430.517617][ T30] ? __pfx_move_buckets_wait+0x10/0x10 [ 430.523094][ T30] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 430.528779][ T30] ? __pfx_autoremove_wake_function+0x10/0x10 [ 430.534853][ T30] ? bch2_get_next_online_dev+0x4b9/0x4f0 [ 430.540621][ T30] ? bch2_get_next_online_dev+0x2b/0x4f0 [ 430.546284][ T30] bch2_copygc_thread+0x83f/0xc10 [ 430.551354][ T30] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 430.556907][ T30] ? bch2_copygc_thread+0x1a1/0xc10 [ 430.562205][ T30] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 430.568133][ T30] ? lockdep_hardirqs_on+0x99/0x150 [ 430.573356][ T30] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 430.579293][ T30] ? __kthread_parkme+0x169/0x1d0 [ 430.584326][ T30] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 430.589940][ T30] kthread+0x2f0/0x390 [ 430.594039][ T30] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 430.599663][ T30] ? __pfx_kthread+0x10/0x10 [ 430.604267][ T30] ret_from_fork+0x4b/0x80 [ 430.608737][ T30] ? __pfx_kthread+0x10/0x10 [ 430.613354][ T30] ret_from_fork_asm+0x1a/0x30 [ 430.618184][ T30] [ 430.621213][ T30] [ 430.621213][ T30] Showing all locks held in the system: [ 430.628980][ T30] 1 lock held by khungtaskd/30: [ 430.633848][ T30] #0: ffffffff8e937aa0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 [ 430.643813][ T30] 2 locks held by getty/5581: [ 430.648555][ T30] #0: ffff888030dbf0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.658396][ T30] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 [ 430.668577][ T30] 2 locks held by syz-executor228/5837: [ 430.674133][ T30] #0: ffff88807d5040e0 (&type->s_umount_key#43){+.+.}-{4:4}, at: deactivate_super+0xb5/0xf0 [ 430.684402][ T30] #1: ffff888076f80278 (&c->state_lock){+.+.}-{4:4}, at: __bch2_fs_stop+0xfd/0x5c0 [ 430.693887][ T30] [ 430.696204][ T30] ============================================= [ 430.696204][ T30] [ 430.704744][ T30] NMI backtrace for cpu 1 [ 430.709106][ T30] CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 [ 430.719588][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 430.729626][ T30] Call Trace: [ 430.732905][ T30] [ 430.735825][ T30] dump_stack_lvl+0x241/0x360 [ 430.740499][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.745691][ T30] ? __pfx__printk+0x10/0x10 [ 430.750295][ T30] nmi_cpu_backtrace+0x49c/0x4d0 [ 430.755246][ T30] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.760709][ T30] ? _printk+0xd5/0x120 [ 430.764864][ T30] ? __pfx__printk+0x10/0x10 [ 430.769450][ T30] ? __wake_up_klogd+0xcc/0x110 [ 430.774291][ T30] ? __pfx__printk+0x10/0x10 [ 430.778874][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.784864][ T30] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 430.790865][ T30] watchdog+0xff6/0x1040 [ 430.795107][ T30] ? watchdog+0x1ea/0x1040 [ 430.799582][ T30] ? __pfx_watchdog+0x10/0x10 [ 430.804334][ T30] kthread+0x2f0/0x390 [ 430.808395][ T30] ? __pfx_watchdog+0x10/0x10 [ 430.813059][ T30] ? __pfx_kthread+0x10/0x10 [ 430.817631][ T30] ret_from_fork+0x4b/0x80 [ 430.822030][ T30] ? __pfx_kthread+0x10/0x10 [ 430.826606][ T30] ret_from_fork_asm+0x1a/0x30 [ 430.831362][ T30] [ 430.834532][ T30] Sending NMI from CPU 1 to CPUs 0: [ 430.839813][ C0] NMI backtrace for cpu 0 [ 430.839827][ C0] CPU: 0 UID: 0 PID: 5184 Comm: klogd Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 [ 430.839846][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 430.839856][ C0] RIP: 0010:unwind_next_frame+0x6d5/0x22d0 [ 430.839880][ C0] Code: 89 c1 48 c1 f9 02 48 c1 e8 3f 48 01 c8 48 83 e0 fe 49 8d 1c 46 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 <84> c0 75 27 48 63 03 48 01 d8 48 8d 4b 04 4c 39 f8 4c 0f 46 f1 48 [ 430.839893][ C0] RSP: 0018:ffffc900034671d0 EFLAGS: 00000a06 [ 430.839909][ C0] RAX: 0000000000000000 RBX: ffffffff903297c8 RCX: dffffc0000000000 [ 430.839921][ C0] RDX: 00000000000b0001 RSI: ffffffff90aced16 RDI: ffffffff814ba930 [ 430.839933][ C0] RBP: ffffffff903297d8 R08: 0000000000000009 R09: ffffc90003467390 [ 430.839945][ C0] R10: ffffc900034672f0 R11: ffffffff818b36a0 R12: ffffffff903297b8 [ 430.839957][ C0] R13: ffffffff903297b8 R14: ffffffff903297b8 R15: ffffffff81fafd87 [ 430.839970][ C0] FS: 00007efe05472380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 430.839984][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.839996][ C0] CR2: 0000555b0dde2590 CR3: 000000007d18c000 CR4: 00000000003526f0 [ 430.840018][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 430.840028][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 430.840038][ C0] Call Trace: [ 430.840043][ C0] [ 430.840050][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 430.840070][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 430.840089][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.840107][ C0] ? nmi_handle+0x2a/0x5a0 [ 430.840132][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 430.840155][ C0] ? nmi_handle+0x14f/0x5a0 [ 430.840171][ C0] ? nmi_handle+0x2a/0x5a0 [ 430.840189][ C0] ? unwind_next_frame+0x6d5/0x22d0 [ 430.840206][ C0] ? default_do_nmi+0x63/0x160 [ 430.840224][ C0] ? exc_nmi+0x123/0x1f0 [ 430.840240][ C0] ? end_repeat_nmi+0xf/0x53 [ 430.840254][ C0] ? kmem_cache_alloc_node_noprof+0x2c7/0x380 [ 430.840274][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 430.840299][ C0] ? unwind_next_frame+0xb0/0x22d0 [ 430.840315][ C0] ? unwind_next_frame+0x6d5/0x22d0 [ 430.840332][ C0] ? unwind_next_frame+0x6d5/0x22d0 [ 430.840349][ C0] ? unwind_next_frame+0x6d5/0x22d0 [ 430.840366][ C0] [ 430.840371][ C0] [ 430.840381][ C0] ? kmem_cache_alloc_node_noprof+0x2c8/0x380 [ 430.840400][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 430.840424][ C0] arch_stack_walk+0x11c/0x150 [ 430.840445][ C0] ? kmem_cache_alloc_node_noprof+0x2c8/0x380 [ 430.840464][ C0] stack_trace_save+0x118/0x1d0 [ 430.840488][ C0] ? __pfx_stack_trace_save+0x10/0x10 [ 430.840512][ C0] ? __pfx_validate_chain+0x10/0x10 [ 430.840535][ C0] __kfence_alloc+0x274/0x370 [ 430.840560][ C0] ? __pfx___kfence_alloc+0x10/0x10 [ 430.840582][ C0] ? __kfence_alloc+0x274/0x370 [ 430.840603][ C0] ? kmem_cache_alloc_node_noprof+0x2c8/0x380 [ 430.840643][ C0] ? kmem_cache_alloc_node_noprof+0x2a8/0x380 [ 430.840663][ C0] kmem_cache_alloc_node_noprof+0x2c8/0x380 [ 430.840680][ C0] ? __alloc_skb+0x1c3/0x440 [ 430.840698][ C0] __alloc_skb+0x1c3/0x440 [ 430.840715][ C0] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 430.840737][ C0] ? __pfx___alloc_skb+0x10/0x10 [ 430.840758][ C0] alloc_skb_with_frags+0xc3/0x820 [ 430.840783][ C0] sock_alloc_send_pskb+0x91a/0xa60 [ 430.840811][ C0] ? __pfx_sock_alloc_send_pskb+0x10/0x10 [ 430.840833][ C0] ? do_raw_spin_unlock+0x13c/0x8b0 [ 430.840859][ C0] unix_dgram_sendmsg+0x6d3/0x1f80 [ 430.840883][ C0] ? __pfx_smack_socket_sendmsg+0x10/0x10 [ 430.840903][ C0] ? tomoyo_socket_sendmsg_permission+0x288/0x420 [ 430.840929][ C0] ? __pfx_unix_dgram_sendmsg+0x10/0x10 [ 430.840954][ C0] ? __pfx_unix_dgram_sendmsg+0x10/0x10 [ 430.840971][ C0] __sock_sendmsg+0x221/0x270 [ 430.840995][ C0] __sys_sendto+0x363/0x4c0 [ 430.841027][ C0] ? __pfx___sys_sendto+0x10/0x10 [ 430.841055][ C0] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 430.841073][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 430.841092][ C0] __x64_sys_sendto+0xde/0x100 [ 430.841110][ C0] do_syscall_64+0xf3/0x230 [ 430.841133][ C0] ? clear_bhb_loop+0x35/0x90 [ 430.841149][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.841172][ C0] RIP: 0033:0x7efe055d49b5 [ 430.841185][ C0] Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83 [ 430.841198][ C0] RSP: 002b:00007ffdeb8f4428 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 430.841214][ C0] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007efe055d49b5 [ 430.841226][ C0] RDX: 000000000000008b RSI: 0000562baedcfb60 RDI: 0000000000000003 [ 430.841236][ C0] RBP: 0000562baedcb910 R08: 0000000000000000 R09: 0000000000000000 [ 430.841246][ C0] R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013 [ 430.841256][ C0] R13: 00007efe05762212 R14: 00007ffdeb8f4528 R15: 0000000000000000 [ 430.841274][ C0] [ 430.841282][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.469 msecs [ 430.841818][ T30] Kernel panic - not syncing: hung_task: blocked tasks [ 431.352268][ T30] CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0 [ 431.362759][ T30] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 431.372809][ T30] Call Trace: [ 431.376087][ T30] [ 431.379015][ T30] dump_stack_lvl+0x241/0x360 [ 431.383695][ T30] ? __pfx_dump_stack_lvl+0x10/0x10 [ 431.388892][ T30] ? __pfx__printk+0x10/0x10 [ 431.393474][ T30] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 431.399453][ T30] ? vscnprintf+0x5d/0x90 [ 431.403783][ T30] panic+0x349/0x880 [ 431.407680][ T30] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 431.413829][ T30] ? __pfx_panic+0x10/0x10 [ 431.418237][ T30] ? tick_nohz_tick_stopped+0x82/0xb0 [ 431.423604][ T30] ? __irq_work_queue_local+0x137/0x410 [ 431.429141][ T30] ? irq_work_queue+0xca/0x150 [ 431.433895][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 431.439876][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 431.445852][ T30] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 431.451830][ T30] ? nmi_trigger_cpumask_backtrace+0x251/0x320 [ 431.457981][ T30] watchdog+0x1035/0x1040 [ 431.462302][ T30] ? watchdog+0x1ea/0x1040 [ 431.466712][ T30] ? __pfx_watchdog+0x10/0x10 [ 431.471386][ T30] kthread+0x2f0/0x390 [ 431.475445][ T30] ? __pfx_watchdog+0x10/0x10 [ 431.480112][ T30] ? __pfx_kthread+0x10/0x10 [ 431.484696][ T30] ret_from_fork+0x4b/0x80 [ 431.489111][ T30] ? __pfx_kthread+0x10/0x10 [ 431.493692][ T30] ret_from_fork_asm+0x1a/0x30 [ 431.498474][ T30] [ 431.501632][ T30] Kernel Offset: disabled [ 431.505942][ T30] Rebooting in 86400 seconds..