./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2332303387 <...> Warning: Permanently added '10.128.0.228' (ED25519) to the list of known hosts. execve("./syz-executor2332303387", ["./syz-executor2332303387"], 0x7fff95646dc0 /* 10 vars */) = 0 brk(NULL) = 0x55557375c000 brk(0x55557375cd00) = 0x55557375cd00 arch_prctl(ARCH_SET_FS, 0x55557375c380) = 0 set_tid_address(0x55557375c650) = 5851 set_robust_list(0x55557375c660, 24) = 0 rseq(0x55557375cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2332303387", 4096) = 28 getrandom("\xa9\xec\x58\x95\xce\xdd\xc1\xcb", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557375cd00 brk(0x55557377dd00) = 0x55557377dd00 brk(0x55557377e000) = 0x55557377e000 mprotect(0x7f007bd65000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 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 5852 attached [pid 5852] set_robust_list(0x55557375c660, 24) = 0 [pid 5852] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5851] <... clone resumed>, child_tidptr=0x55557375c650) = 5852 [pid 5852] <... prctl resumed>) = 0 [pid 5852] setpgid(0, 0) = 0 [pid 5852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "1000", 4) = 4 [pid 5852] close(3) = 0 executing program [pid 5852] write(1, "executing program\n", 18) = 18 [pid 5852] memfd_create("syzkaller", 0) = 3 [pid 5852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0073800000 [pid 5852] 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 5852] munmap(0x7f0073800000, 138412032) = 0 [pid 5852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5852] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5852] close(3) = 0 [pid 5852] close(4) = 0 [pid 5852] mkdir("./file0", 0777) = 0 [ 209.965962][ T5852] loop0: detected capacity change from 0 to 32768 [ 210.056189][ T5852] bcachefs (baafa011-d992-4344-aaf9-4ff0e0bec0ff): Using encoding defined by superblock: utf8-12.1.0 [ 210.082261][ T5852] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names,version_upgrade=none [ 210.082261][ T5852] allowing incompatible features above 0.0: (unknown version) [ 210.107000][ T5852] bcachefs (loop0): recovering from clean shutdown, journal seq 13 [ 210.128338][ T5852] bcachefs (loop0): accounting_read... done [ 210.135068][ T5852] bcachefs (loop0): alloc_read... done [ 210.140670][ T5852] bcachefs (loop0): snapshots_read... done [ 210.149537][ T5852] bcachefs (loop0): going read-write [ 210.159591][ T5852] bcachefs (loop0): journal_replay... done [ 210.165505][ T5852] bcachefs (loop0): resume_logged_ops... done [ 210.171748][ T5852] bcachefs (loop0): delete_dead_inodes... done [ 210.178611][ T5862] bcachefs (loop0): backpointer doesn't match extent it points to: [ 210.178796][ T5862] u64s 9 type backpointer 0:8921088:0 len 0 ver 0: bucket=0:34:8 btree=extents level=0 data_type=user suboffset=0 len=8 gen=0 pos=1073741825:24:U32_MAX [pid 5852] mount("/dev/loop0", "./file0", "bcachefs", 0, "\x76\x65\x72\x73\x69\x6f\x6e\x5f\x75\x70\x67\x72\x61\x64\x65\x3d\x6e\x6f\x6e\x65\x2c\x62\x61\x63\x6b\x67\x72\x6f\x75\x6e\x64\x52\x63\x6f\x6d\x70\x72\x65\x73\x04\x2b\x95\x8c\x56\x02\xec\xbd\x2c") = 0 [pid 5852] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5852] chdir("./file0") = 0 [pid 5852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 210.178814][ T5862] u64s 8 type extent 1073741825:24:U32_MAX len 24 ver 2: durability: 1 crc: c_size 8 size 24 offset 0 nonce 0 csum chacha20_poly1305_80 5c1d:75853c64f7009f9d compress lz4 ptr: 0:34:8 gen 0 [ 210.178831][ T5862] u64s 9 type backpointer 0:8921088:0 len 0 ver 0: bucket=0:34:8 btree=extents level=0 data_type=user suboffset=0 len=8 gen=0 pos=1073741825:24:U32_MAX, fixing [ 210.238612][ T5852] bcachefs (loop0): done starting filesystem [pid 5852] ioctl(4, LOOP_CLR_FD) = 0 [pid 5852] close(4) = 0 [pid 5852] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 000) = 4 [pid 5852] pwrite64(4, "\x32\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 65007, 65228 [pid 5851] kill(-5852, SIGKILL) = 0 [pid 5851] kill(5852, SIGKILL) = 0 [pid 5851] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5851] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5851] getdents64(3, 0x55557375d6f0 /* 2 entries */, 32768) = 48 [pid 5851] getdents64(3, 0x55557375d6f0 /* 0 entries */, 32768) = 0 [pid 5851] close(3) = 0 [ 241.644559][ T5852] Allocator stuck? Waited for 30 seconds [ 241.644586][ T5852] Allocator debug: [ 241.644596][ T5852] capacity1536 [ 241.644605][ T5852] reserved 31232 [ 241.644615][ T5852] hidden 0 [ 241.644624][ T5852] btree 0 [ 241.644634][ T5852] data 0 [ 241.644643][ T5852] cached 0 [ 241.644652][ T5852] reserved 0 [ 241.644661][ T5852] online_reserved 136 [ 241.644671][ T5852] nr_inodes 0 [ 241.644680][ T5852] [ 241.644688][ T5852] freelist_wait empty [ 241.644698][ T5852] open buckets allocated1 [ 241.644707][ T5852] open buckets total 1024 [ 241.644716][ T5852] open_buckets_wait empty [ 241.644726][ T5852] open_buckets_btree 0 [ 241.644735][ T5852] open_buckets_user 0 [ 241.644744][ T5852] btree reserve cache 0 [ 241.644754][ T5852] [ 241.644762][ T5852] Dev 0: [ 241.644770][ T5852] buckets sectors fragmented [ 241.644781][ T5852] free 0 0 0 [ 241.644793][ T5852] sb 0 0 0 [ 241.644804][ T5852] journal 0 0 0 [ 241.644815][ T5852] btree 0 0 0 [ 241.644826][ T5852] user 0 0 0 [ 241.644837][ T5852] cached 0 0 0 [ 241.644848][ T5852] parity 0 0 0 [ 241.644860][ T5852] stripe 0 0 0 [ 241.644871][ T5852] need_gc_gens 0 0 0 [ 241.644882][ T5852] need_discard 0 0 0 [ 241.644893][ T5852] unstriped 0 0 0 [ 241.644904][ T5852] capacity 128 [ 241.644914][ T5852] [ 241.644922][ T5852] reserves: [ 241.644930][ T5852] stripe 60 [ 241.644940][ T5852] normal 58 [ 241.644949][ T5852] copygc 56 [ 241.644959][ T5852] btree 28 [ 241.644968][ T5852] btree_copygc 0 [ 241.644990][ T5852] reclaim 0 [ 241.644999][ T5852] interior_updates 0 [ 241.645008][ T5852] [ 241.645016][ T5852] open buckets 0 [ 241.645025][ T5852] buckets to invalidate 0 [ 241.645034][ T5852] [ 241.645042][ T5852] Copygc debug: [ 241.645050][ T5852] running: 1 [ 241.645058][ T5852] copygc_wait:0 [ 241.645067][ T5852] copygc_wait_at:0 [ 241.645076][ T5852] Currently waiting for:0 B [ 241.645085][ T5852] Currently waiting since:708 KiB [ 241.645094][ T5852] Currently calculated wait:0 B [ 241.645103][ T5852] [ 241.645111][ T5852] Journal debug: [ 241.645119][ T5852] flags: replay_done,running,may_skip_flush [ 241.645130][ T5852] dirty journal entries: 0/32768 [ 241.645140][ T5852] seq: 15 [ 241.645149][ T5852] seq_ondisk: 15 [ 241.645158][ T5852] last_seq: 16 [ 241.645167][ T5852] last_seq_ondisk: 15 [ 241.645176][ T5852] flushed_seq_ondisk: 15 [ 241.645186][ T5852] watermark: stripe [ 241.645195][ T5852] each entry reserved: 321 [ 241.645204][ T5852] nr flush writes: 2 [ 241.645231][ T5852] nr noflush writes: 0 [ 241.645241][ T5852] average write size: 1.29 KiB [ 241.645250][ T5852] free buf: 65536 [ 241.645259][ T5852] nr direct reclaim: 0 [ 241.645269][ T5852] nr background reclaim: 3 [ 241.645278][ T5852] reclaim kicked: 0 [ 241.645287][ T5852] reclaim runs in: 40 ms [ 241.645297][ T5852] blocked: 0 [ 241.645306][ T5852] current entry sectors: 256 [ 241.645316][ T5852] current entry error: (No error) [ 241.645326][ T5852] current entry: closed [ 241.645335][ T5852] unwritten entries: [ 241.645355][ T5852] last buf closed [ 241.645365][ T5852] space: [ 241.645373][ T5852] discarded 256:1536 [ 241.645383][ T5852] clean ondisk 256:1536 [ 241.645393][ T5852] clean 256:1536 [ 241.645403][ T5852] total 256:2048 [ 241.645413][ T5852] dev 0: [ 241.645421][ T5852] durability 1: [ 241.645430][ T5852] nr 8 [ 241.645440][ T5852] bucket size 256 [ 241.645449][ T5852] available 6:240 [ 241.645459][ T5852] discard_idx 0 [ 241.645468][ T5852] dirty_ondisk 0 (seq 15) [ 241.645478][ T5852] dirty_idx 0 (seq 15) [ 241.645488][ T5852] cur_idx 0 (seq 15) [ 241.645498][ T5852] replicas want 1 need 1 [ 429.793339][ T31] INFO: task syz-executor233:5852 blocked for more than 143 seconds. [ 429.801501][ T31] Not tainted 6.15.0-rc5-syzkaller-00275-gbec6f00f120e #0 [ 429.810225][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.819347][ T31] task:syz-executor233 state:D stack:19816 pid:5852 tgid:5852 ppid:5851 task_flags:0x440140 flags:0x00004006 [ 429.831621][ T31] Call Trace: [ 429.835227][ T31] [ 429.838212][ T31] __schedule+0x168f/0x4c70 [ 429.842763][ T31] ? blk_mq_flush_plug_list+0x10e/0x1760 [ 429.848953][ T31] ? __pfx_blk_mq_flush_plug_list+0x10/0x10 [ 429.855147][ T31] ? bch2_alloc_sectors_start_trans+0x1f17/0x1f90 [ 429.861613][ T31] ? schedule+0x165/0x360 [ 429.866476][ T31] ? __pfx___schedule+0x10/0x10 [ 429.871406][ T31] ? schedule+0x91/0x360 [ 429.876094][ T31] schedule+0x165/0x360 [ 429.880296][ T31] ? __closure_sync+0x113/0x220 [ 429.885541][ T31] __closure_sync+0x163/0x220 [ 429.890277][ T31] ? __pfx___closure_sync+0x10/0x10 [ 429.895945][ T31] ? __bch2_wait_on_allocator+0x1c7/0x240 [ 429.901708][ T31] __bch2_write+0x324b/0x39b0 [ 429.906832][ T31] ? __pfx___bch2_write+0x10/0x10 [ 429.911916][ T31] ? do_raw_spin_unlock+0x122/0x240 [ 429.918017][ T31] ? _raw_spin_unlock+0x28/0x50 [ 429.922910][ T31] ? bch2_write+0x7d7/0x11e0 [ 429.928043][ T31] ? write_cache_pages+0xc1/0x100 [ 429.933363][ T31] bch2_writepages+0x269/0x360 [ 429.938169][ T31] ? check_path+0x21/0x40 [ 429.942547][ T31] ? __pfx_bch2_writepages+0x10/0x10 [ 429.948333][ T31] ? lockdep_unlock+0x89/0x120 [ 429.953550][ T31] ? __pfx_bch2_writepages+0x10/0x10 [ 429.958970][ T31] do_writepages+0x3ae/0x7b0 [ 429.964020][ T31] ? do_raw_spin_lock+0x121/0x290 [ 429.969087][ T31] ? __pfx_do_writepages+0x10/0x10 [ 429.974738][ T31] ? do_raw_spin_unlock+0x122/0x240 [ 429.979986][ T31] file_write_and_wait_range+0x22c/0x330 [ 429.986068][ T31] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 429.992338][ T31] bch2_fsync+0x127/0x330 [ 429.996964][ T31] bch2_write_iter+0x2822/0x2b90 [ 430.002038][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.007745][ T31] ? __pfx_bch2_write_iter+0x10/0x10 [ 430.013331][ T31] ? rcu_read_lock_any_held+0xb3/0x120 [ 430.018860][ T31] vfs_write+0x548/0xa90 [ 430.023975][ T31] ? __pfx_bch2_write_iter+0x10/0x10 [ 430.029309][ T31] ? __pfx_vfs_write+0x10/0x10 [ 430.034532][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.039782][ T31] ? ptrace_notify+0x22d/0x2c0 [ 430.045024][ T31] __x64_sys_pwrite64+0x193/0x220 [ 430.050105][ T31] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 430.055964][ T31] do_syscall_64+0xf6/0x210 [ 430.060515][ T31] ? clear_bhb_loop+0x45/0xa0 [ 430.065681][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.071615][ T31] RIP: 0033:0x7f007bce2b19 [ 430.076480][ T31] RSP: 002b:00007fffc41f35a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 430.085206][ T31] RAX: ffffffffffffffda RBX: 0000200000000040 RCX: 00007f007bce2b19 [ 430.093488][ T31] RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004 [ 430.101499][ T31] RBP: 00007f007bd655f0 R08: 000055557375d4c0 R09: 000055557375d4c0 [ 430.109912][ T31] R10: 000000000000fecc R11: 0000000000000246 R12: 00007fffc41f35d0 [ 430.118201][ T31] R13: 00007fffc41f37f8 R14: 431bde82d7b634db R15: 00007f007bd2b03b [ 430.126502][ T31] [ 430.129577][ T31] [ 430.129577][ T31] Showing all locks held in the system: [ 430.138244][ T31] 1 lock held by khungtaskd/31: [ 430.143407][ T31] #0: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 430.153604][ T31] 2 locks held by getty/5579: [ 430.158305][ T31] #0: ffff888034a5a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.168536][ T31] #1: ffffc9000333b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 430.178965][ T31] 1 lock held by syz-executor233/5852: [ 430.184699][ T31] #0: ffff8880308ee420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x211/0xa90 [ 430.193920][ T31] 2 locks held by bch-copygc/loop/5862: [ 430.199494][ T31] [ 430.201837][ T31] ============================================= [ 430.201837][ T31] [ 430.210909][ T31] NMI backtrace for cpu 1 [ 430.210936][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc5-syzkaller-00275-gbec6f00f120e #0 PREEMPT(full) [ 430.210974][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.210988][ T31] Call Trace: [ 430.210996][ T31] [ 430.211004][ T31] dump_stack_lvl+0x189/0x250 [ 430.211033][ T31] ? __wake_up_klogd+0xd9/0x110 [ 430.211058][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.211085][ T31] ? __pfx__printk+0x10/0x10 [ 430.211128][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 430.211164][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.211192][ T31] ? _printk+0xcf/0x120 [ 430.211234][ T31] ? __pfx__printk+0x10/0x10 [ 430.211267][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.211301][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 430.211336][ T31] watchdog+0xfee/0x1030 [ 430.211361][ T31] ? watchdog+0x1de/0x1030 [ 430.211392][ T31] kthread+0x70e/0x8a0 [ 430.211417][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.211439][ T31] ? __pfx_kthread+0x10/0x10 [ 430.211462][ T31] ? __pfx_kthread+0x10/0x10 [ 430.211482][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.211501][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.211524][ T31] ? __pfx_kthread+0x10/0x10 [ 430.211544][ T31] ret_from_fork+0x4b/0x80 [ 430.211561][ T31] ? __pfx_kthread+0x10/0x10 [ 430.211582][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.211627][ T31] [ 430.211634][ T31] Sending NMI from CPU 1 to CPUs 0: [ 430.358790][ C0] NMI backtrace for cpu 0 [ 430.358812][ C0] CPU: 0 UID: 0 PID: 5862 Comm: bch-copygc/loop Not tainted 6.15.0-rc5-syzkaller-00275-gbec6f00f120e #0 PREEMPT(full) [ 430.358832][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.358842][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x37/0x90 [ 430.358866][ C0] Code: 08 00 72 92 65 8b 0d d8 2d b2 10 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 3c 16 00 00 00 74 52 8b 8a 18 16 00 00 <83> f9 03 75 47 48 8b 8a 20 16 00 00 44 8b 8a 1c 16 00 00 49 c1 e1 [ 430.358880][ C0] RSP: 0018:ffffc900041ef128 EFLAGS: 00000246 [ 430.358894][ C0] RAX: ffffffff841e29dd RBX: 0000000000000001 RCX: 0000000000000000 [ 430.358905][ C0] RDX: ffff8880733c9e00 RSI: 0000000000000000 RDI: 0000000000000000 [ 430.358915][ C0] RBP: 0000000000000000 R08: ffffc900041ef027 R09: 0000000000000000 [ 430.358925][ C0] R10: ffffc900041ef000 R11: fffff5200083de05 R12: 00000000ffffffff [ 430.358936][ C0] R13: ffff88807326c328 R14: 1ffff1100e64d865 R15: 0000000000000001 [ 430.358947][ C0] FS: 0000000000000000(0000) GS:ffff888126100000(0000) knlGS:0000000000000000 [ 430.358966][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.358977][ C0] CR2: 00007fcea9c91e80 CR3: 000000000dd36000 CR4: 00000000003526f0 [ 430.358991][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 430.359000][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 430.359009][ C0] Call Trace: [ 430.359015][ C0] [ 430.359021][ C0] bch2_btree_path_verify_locks+0x49d/0xba0 [ 430.359046][ C0] bch2_btree_path_traverse_one+0x1b4f/0x2430 [ 430.359064][ C0] ? __pfx_bch2_btree_path_verify_level+0x10/0x10 [ 430.359090][ C0] ? __pfx___bch2_btree_path_set_pos+0x10/0x10 [ 430.359108][ C0] ? __asan_memset+0x22/0x50 [ 430.359127][ C0] ? bch2_btree_path_verify_locks+0x8ab/0xba0 [ 430.359145][ C0] ? bch2_btree_iter_verify_entry_exit+0x236/0xb50 [ 430.359161][ C0] ? bch2_btree_iter_peek_max+0x45cf/0x5260 [ 430.359178][ C0] ? bch2_copygc+0x9e4/0x3cf0 [ 430.359201][ C0] ? __pfx_bch2_btree_path_traverse_one+0x10/0x10 [ 430.359217][ C0] ? __bitmap_weight+0xe4/0x100 [ 430.359241][ C0] ? btree_trans_verify_sorted_refs+0x40c/0x4e0 [ 430.359262][ C0] ? __bitmap_weight+0xe4/0x100 [ 430.359285][ C0] ? btree_trans_verify_sorted_refs+0x40c/0x4e0 [ 430.359304][ C0] ? bch2_btree_path_verify_locks+0x276/0xba0 [ 430.359326][ C0] bch2_btree_iter_peek_slot+0x772/0x1f00 [ 430.359352][ C0] ? bch2_copygc+0x3c0/0x3cf0 [ 430.359370][ C0] ? bch2_copygc+0x9e4/0x3cf0 [ 430.359394][ C0] ? __pfx_bch2_btree_iter_peek_slot+0x10/0x10 [ 430.359412][ C0] ? __pfx_bch2_path_get+0x10/0x10 [ 430.359430][ C0] ? bch2_write_ref_put+0x5b/0x670 [ 430.359452][ C0] bch2_copygc+0x9e4/0x3cf0 [ 430.359474][ C0] ? bch2_copygc+0x3c0/0x3cf0 [ 430.359507][ C0] ? __pfx_bch2_copygc+0x10/0x10 [ 430.359526][ C0] ? bch2_copygc_wait_amount+0xdc/0xbb0 [ 430.359546][ C0] ? bch2_copygc_wait_amount+0xb4e/0xbb0 [ 430.359566][ C0] ? bch2_copygc_wait_amount+0xdc/0xbb0 [ 430.359591][ C0] ? bch2_copygc+0x3c0/0x3cf0 [ 430.359620][ C0] ? bch2_copygc+0x3c0/0x3cf0 [ 430.359647][ C0] bch2_copygc_thread+0x8c9/0xd40 [ 430.359667][ C0] ? bch2_copygc_thread+0x17b/0xd40 [ 430.359696][ C0] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 430.359716][ C0] ? bch2_copygc_thread+0x3dd/0xd40 [ 430.359755][ C0] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 430.359772][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.359796][ C0] ? __kthread_parkme+0x7b/0x200 [ 430.359811][ C0] ? __kthread_parkme+0x1a1/0x200 [ 430.359828][ C0] kthread+0x70e/0x8a0 [ 430.359846][ C0] ? __pfx_bch2_copygc_thread+0x10/0x10 [ 430.359865][ C0] ? __pfx_kthread+0x10/0x10 [ 430.359882][ C0] ? __pfx_kthread+0x10/0x10 [ 430.359898][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.359913][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.359930][ C0] ? __pfx_kthread+0x10/0x10 [ 430.359945][ C0] ret_from_fork+0x4b/0x80 [ 430.359966][ C0] ? __pfx_kthread+0x10/0x10 [ 430.359982][ C0] ret_from_fork_asm+0x1a/0x30 [ 430.360014][ C0] [ 430.360021][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.232 msecs [ 430.362056][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 430.774349][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc5-syzkaller-00275-gbec6f00f120e #0 PREEMPT(full) [ 430.786194][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.796352][ T31] Call Trace: [ 430.799635][ T31] [ 430.802572][ T31] dump_stack_lvl+0x99/0x250 [ 430.807175][ T31] ? __asan_memcpy+0x40/0x70 [ 430.811770][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.816978][ T31] ? __pfx__printk+0x10/0x10 [ 430.821620][ T31] panic+0x2db/0x790 [ 430.825614][ T31] ? __pfx_panic+0x10/0x10 [ 430.830034][ T31] ? tick_nohz_tick_stopped+0x86/0xb0 [ 430.835420][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 430.840795][ T31] ? nmi_trigger_cpumask_backtrace+0x2b6/0x300 [ 430.846967][ T31] watchdog+0x102d/0x1030 [ 430.851305][ T31] ? watchdog+0x1de/0x1030 [ 430.855746][ T31] kthread+0x70e/0x8a0 [ 430.859840][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.864522][ T31] ? __pfx_kthread+0x10/0x10 [ 430.869115][ T31] ? __pfx_kthread+0x10/0x10 [ 430.873712][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.878912][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.884124][ T31] ? __pfx_kthread+0x10/0x10 [ 430.888751][ T31] ret_from_fork+0x4b/0x80 [ 430.893192][ T31] ? __pfx_kthread+0x10/0x10 [ 430.897785][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.902576][ T31] [ 430.905936][ T31] Kernel Offset: disabled [ 430.910268][ T31] Rebooting in 86400 seconds..