./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3626292174 <...> Warning: Permanently added '10.128.0.218' (ED25519) to the list of known hosts. execve("./syz-executor3626292174", ["./syz-executor3626292174"], 0x7ffe6e4b4f40 /* 10 vars */) = 0 brk(NULL) = 0x555560083000 brk(0x555560083d00) = 0x555560083d00 arch_prctl(ARCH_SET_FS, 0x555560083380) = 0 set_tid_address(0x555560083650) = 5866 set_robust_list(0x555560083660, 24) = 0 rseq(0x555560083ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3626292174", 4096) = 28 getrandom("\x36\x29\xd8\xea\xa7\x0a\x65\x31", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555560083d00 brk(0x5555600a4d00) = 0x5555600a4d00 brk(0x5555600a5000) = 0x5555600a5000 mprotect(0x7fcb78034000, 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, child_tidptr=0x555560083650) = 5868 ./strace-static-x86_64: Process 5868 attached [pid 5868] set_robust_list(0x555560083660, 24) = 0 [pid 5868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5868] setpgid(0, 0) = 0 [pid 5868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5868] write(3, "1000", 4) = 4 [pid 5868] close(3) = 0 [pid 5868] write(1, "executing program\n", 18executing program ) = 18 [pid 5868] memfd_create("syzkaller", 0) = 3 [pid 5868] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fcb6fa00000 [pid 5868] 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 5868] munmap(0x7fcb6fa00000, 138412032) = 0 [pid 5868] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5868] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5868] close(3) = 0 [pid 5868] close(4) = 0 [pid 5868] mkdir("./file0", 0777) = 0 [ 244.718814][ T5868] loop0: detected capacity change from 0 to 32768 [ 244.767987][ T5868] ======================================================= [ 244.767987][ T5868] WARNING: The mand mount option has been deprecated and [ 244.767987][ T5868] and is ignored by this kernel. Remove the mand [ 244.767987][ T5868] option from the mount to silence this warning. [ 244.767987][ T5868] ======================================================= [ 244.840792][ T5868] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names,noexcl,read_only,version_upgrade=none,nocow [ 244.840814][ T5868] allowing incompatible features above 0.0: (unknown version) [ 244.840823][ T5868] features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes [ 244.881978][ T5868] bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0 [ 244.890564][ T5868] bcachefs (loop0): recovering from clean shutdown, journal seq 13 [ 244.921482][ T5868] bcachefs (loop0): accounting_read... done [ 244.929610][ T5868] bcachefs (loop0): alloc_read... done [pid 5868] mount("/dev/loop0", "./file0", "bcachefs", MS_RDONLY|MS_SYNCHRONOUS|MS_MANDLOCK|MS_POSIXACL|MS_STRICTATIME, "nocow,version_upgrade=none,noexcl,shard_inode_numbers,") = 0 [pid 5868] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5868] chdir("./file0") = 0 [ 244.937300][ T5868] bcachefs (loop0): snapshots_read... done [ 244.950279][ T5868] bcachefs (loop0): journal_replay... done [ 244.958497][ T5868] bcachefs (loop0): resume_logged_ops... done [ 244.966346][ T5868] bcachefs (loop0): delete_dead_inodes... done [ 244.976177][ T5868] bcachefs (loop0): done starting filesystem [pid 5868] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5868] ioctl(4, LOOP_CLR_FD) = 0 [pid 5868] close(4) = 0 [pid 5868] mkdir(".", 0777) = -1 EEXIST (File exists) [ 245.058276][ T5868] bcachefs (loop0): going read-write [pid 5868] mount(NULL, ".", 0x200000000f40, MS_NOEXEC|MS_SYNCHRONOUS|MS_REMOUNT|MS_NOATIME|MS_MOVE|MS_REC|MS_SILENT|MS_PRIVATE|MS_RELATIME|MS_I_VERSION|MS_STRICTATIME, "") = 0 [pid 5868] openat(AT_FDCWD, ".", O_RDONLY|O_DIRECTORY) = 4 [pid 5868] chdir(".") = 0 [ 245.103345][ T5877] bcachefs (loop0): backpointer doesn't match extent it points to: [ 245.103390][ T5877] 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 [ 245.103410][ T5877] 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 [ 245.103430][ T5877] 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 [ 245.166966][ T5877] bcachefs (loop0): Detected missing backpointers in bucket 34, now have 1/128 with missing [ 245.166999][ T5877] scheduling recovery pass check_extents_to_backpointers (17) [pid 5868] quotactl(QCMD(Q_SETQUOTA, USRQUOTA), "/dev/loop0", 0, {dqb_bhardlimit=0, dqb_bsoftlimit=6, dqb_curspace=8388727, dqb_ihardlimit=1042, dqb_isoftlimit=6, dqb_curinodes=65535, ...} [pid 5866] kill(-5868, SIGKILL) = 0 [pid 5866] kill(5868, SIGKILL) = 0 [pid 5866] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5866] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5866] getdents64(3, 0x5555600846f0 /* 2 entries */, 32768) = 48 [pid 5866] getdents64(3, 0x5555600846f0 /* 0 entries */, 32768) = 0 [pid 5866] close(3) = 0 [ 276.560130][ T5868] Allocator stuck? Waited for 30 seconds [ 276.560165][ T5868] Allocator debug: [ 276.560172][ T5868] capacity1536 [ 276.560178][ T5868] reserved 31232 [ 276.560186][ T5868] hidden 0 [ 276.560193][ T5868] btree 0 [ 276.560200][ T5868] data 0 [ 276.560206][ T5868] cached 0 [ 276.560213][ T5868] reserved 0 [ 276.560220][ T5868] online_reserved 768 [ 276.560227][ T5868] nr_inodes 0 [ 276.560234][ T5868] [ 276.560240][ T5868] freelist_wait waiting [ 276.560247][ T5868] open buckets allocated1 [ 276.560254][ T5868] open buckets total 1024 [ 276.560261][ T5868] open_buckets_wait empty [ 276.560268][ T5868] open_buckets_btree 0 [ 276.560275][ T5868] open_buckets_user 0 [ 276.560281][ T5868] btree reserve cache 0 [ 276.560288][ T5868] [ 276.560294][ T5868] Dev 0: [ 276.560300][ T5868] buckets sectors fragmented [ 276.560309][ T5868] free 0 0 0 [ 276.560317][ T5868] sb 0 0 0 [ 276.560326][ T5868] journal 0 0 0 [ 276.560334][ T5868] btree 0 0 0 [ 276.560342][ T5868] user 0 0 0 [ 276.560351][ T5868] cached 0 0 0 [ 276.560359][ T5868] parity 0 0 0 [ 276.560367][ T5868] stripe 0 0 0 [ 276.560385][ T5868] need_gc_gens 0 0 0 [ 276.560393][ T5868] need_discard 0 0 0 [ 276.560401][ T5868] unstriped 0 0 0 [ 276.560410][ T5868] capacity 128 [ 276.560417][ T5868] [ 276.560423][ T5868] reserves: [ 276.560429][ T5868] stripe 60 [ 276.560436][ T5868] normal 58 [ 276.560443][ T5868] copygc 56 [ 276.560450][ T5868] btree 28 [ 276.560457][ T5868] btree_copygc 0 [ 276.560464][ T5868] reclaim 0 [ 276.560471][ T5868] interior_updates 0 [ 276.560478][ T5868] [ 276.560484][ T5868] open buckets 0 [ 276.560491][ T5868] buckets to invalidate 0 [ 276.560498][ T5868] [ 276.560504][ T5868] Copygc debug: [ 276.560511][ T5868] running: 0 [ 276.560517][ T5868] copygc_wait:0 [ 276.560523][ T5868] copygc_wait_at:0 [ 276.560530][ T5868] Currently waiting for:0 B [ 276.560537][ T5868] Currently waiting since:640 KiB [ 276.560544][ T5868] Currently calculated wait: [ 276.560551][ T5868] loop0: 0 B [ 276.560558][ T5868] [<0>] bch2_copygc_thread+0xa9f/0xe00 [ 276.560565][ T5868] [<0>] kthread+0x711/0x8a0 [ 276.560572][ T5868] [<0>] ret_from_fork+0x3fc/0x770 [ 276.560580][ T5868] [<0>] ret_from_fork_asm+0x1a/0x30 [ 276.560587][ T5868] [ 276.560593][ T5868] Journal debug: [ 276.560599][ T5868] flags: replay_done,running,may_skip_flush [ 276.560608][ T5868] dirty journal entries: 0/32768 [ 276.560615][ T5868] seq: 14 [ 276.560622][ T5868] seq_ondisk: 14 [ 276.560629][ T5868] last_seq: 15 [ 276.560636][ T5868] last_seq_ondisk: 14 [ 276.560643][ T5868] flushed_seq_ondisk: 14 [ 276.560650][ T5868] watermark: stripe [ 276.560658][ T5868] each entry reserved: 321 [ 276.560665][ T5868] nr flush writes: 1 [ 276.560672][ T5868] nr noflush writes: 0 [ 276.560679][ T5868] average write size: 1.28 KiB [ 276.560686][ T5868] free buf: 65536 [ 276.560693][ T5868] nr direct reclaim: 0 [ 276.560700][ T5868] nr background reclaim: 1 [ 276.560707][ T5868] reclaim kicked: 0 [ 276.560714][ T5868] reclaim runs in: 0 ms [ 276.560722][ T5868] blocked: 0 [ 276.560729][ T5868] current entry sectors: 256 [ 276.560736][ T5868] current entry error: (No error) [ 276.560743][ T5868] current entry: closed [ 276.560750][ T5868] unwritten entries: [ 276.560757][ T5868] last buf closed [ 276.560764][ T5868] space: [ 276.560770][ T5868] discarded 256:1536 [ 276.560777][ T5868] clean ondisk 256:1536 [ 276.560784][ T5868] clean 256:1536 [ 276.560792][ T5868] total 256:2048 [ 276.560799][ T5868] dev 0: [ 276.560805][ T5868] durability 1: [ 276.560812][ T5868] nr 8 [ 276.560819][ T5868] bucket size 256 [ 276.560826][ T5868] available 6:248 [ 276.560833][ T5868] discard_idx 0 [ 276.560840][ T5868] dirty_ondisk 0 (seq 14) [ 276.560853][ T5868] dirty_idx 0 (seq 14) [ 276.560860][ T5868] cur_idx 0 (seq 14) [ 276.560868][ T5868] replicas want 1 need 1 [ 430.152237][ T31] INFO: task syz-executor362:5868 blocked for more than 143 seconds. [ 430.160629][ T31] Not tainted 6.16.0-rc7-syzkaller #0 [ 430.166560][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.175490][ T31] task:syz-executor362 state:D stack:21000 pid:5868 tgid:5868 ppid:5866 task_flags:0x400140 flags:0x00004006 [ 430.187650][ T31] Call Trace: [ 430.191044][ T31] [ 430.194014][ T31] __schedule+0x16aa/0x4c90 [ 430.198560][ T31] ? schedule+0x165/0x360 [ 430.202971][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.207886][ T31] ? __pfx___schedule+0x10/0x10 [ 430.213044][ T31] ? schedule+0x91/0x360 [ 430.217337][ T31] schedule+0x165/0x360 [ 430.221583][ T31] ? __closure_sync+0x113/0x220 [ 430.226499][ T31] __closure_sync+0x163/0x220 [ 430.231609][ T31] ? __pfx___closure_sync+0x10/0x10 [ 430.236873][ T31] ? __bch2_wait_on_allocator+0x1c7/0x240 [ 430.242688][ T31] bch2_btree_update_start+0x18dc/0x1de0 [ 430.248385][ T31] ? bch2_btree_split_leaf+0x14b/0x8e0 [ 430.253959][ T31] ? __pfx_bch2_btree_update_start+0x10/0x10 [ 430.260046][ T31] ? __pfx_closure_sync_fn+0x10/0x10 [ 430.265403][ T31] ? bch2_btree_path_peek_slot+0x8b6/0xfe0 [ 430.271330][ T31] ? __asan_memcpy+0x40/0x70 [ 430.275977][ T31] bch2_btree_split_leaf+0x14b/0x8e0 [ 430.281365][ T31] bch2_trans_commit_error+0x1b7/0x1130 [ 430.286955][ T31] ? bch2_btree_node_prep_for_write+0x318/0x650 [ 430.293304][ T31] ? bch2_set_quota+0x68f/0x910 [ 430.298222][ T31] ? six_unlock_ip+0x302/0x430 [ 430.303173][ T31] ? __pfx_bch2_trans_commit_error+0x10/0x10 [ 430.309444][ T31] ? bch2_trans_unlock_updates_write+0xc22/0xd50 [ 430.315841][ T31] __bch2_trans_commit+0x1bb5/0x8870 [ 430.321233][ T31] ? bch2_set_quota+0x349/0x910 [ 430.326157][ T31] ? bch2_set_quota+0x68f/0x910 [ 430.331227][ T31] ? __pfx_bch2_btree_iter_peek_slot+0x10/0x10 [ 430.337432][ T31] ? __pfx___bch2_trans_commit+0x10/0x10 [ 430.343168][ T31] ? bch2_path_put+0x1b6/0x15d0 [ 430.348147][ T31] ? __pfx_bch2_path_get+0x10/0x10 [ 430.353349][ T31] ? from_kuid+0x1b0/0x640 [ 430.358299][ T31] ? bch2_set_quota+0x281/0x910 [ 430.363237][ T31] ? bch2_set_quota+0x281/0x910 [ 430.368403][ T31] bch2_set_quota+0x68f/0x910 [ 430.373189][ T31] ? bch2_set_quota+0x349/0x910 [ 430.378091][ T31] ? __pfx_bch2_set_quota+0x10/0x10 [ 430.383409][ T31] ? bch2_set_quota+0x349/0x910 [ 430.388315][ T31] ? __pfx_from_kuid+0x10/0x10 [ 430.393521][ T31] quota_setquota+0x4b4/0x540 [ 430.398264][ T31] ? __pfx_quota_setquota+0x10/0x10 [ 430.403714][ T31] ? safesetid_security_capable+0xa9/0x1a0 [ 430.409638][ T31] ? do_quotactl+0x734/0x860 [ 430.414273][ T31] __se_sys_quotactl+0x279/0x950 [ 430.419498][ T31] ? __pfx___se_sys_quotactl+0x10/0x10 [ 430.425037][ T31] ? rcu_is_watching+0x15/0xb0 [ 430.429928][ T31] do_syscall_64+0xfa/0x3b0 [ 430.435015][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.441199][ T31] ? asm_sysvec_reschedule_ipi+0x1a/0x20 [ 430.446877][ T31] ? clear_bhb_loop+0x60/0xb0 [ 430.451689][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.457674][ T31] RIP: 0033:0x7fcb77fb0d59 [ 430.462189][ T31] RSP: 002b:00007ffd42dc8aa8 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 [ 430.470806][ T31] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007fcb77fb0d59 [ 430.478828][ T31] RDX: 0000000000000000 RSI: 0000200000000100 RDI: ffffffff80000800 [ 430.487212][ T31] RBP: 0000200000000080 R08: 0000000000000000 R09: 0000200000000000 [ 430.495292][ T31] R10: 0000200000000200 R11: 0000000000000246 R12: 00007ffd42dc8ae0 [ 430.503363][ T31] R13: 00007ffd42dc8d08 R14: 431bde82d7b634db R15: 00007fcb77ffa03b [ 430.511434][ T31] [ 430.514575][ T31] [ 430.514575][ T31] Showing all locks held in the system: [ 430.522383][ T31] 1 lock held by khungtaskd/31: [ 430.527300][ T31] #0: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 430.537370][ T31] 2 locks held by getty/5599: [ 430.542127][ T31] #0: ffff888030cc20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.551966][ T31] #1: ffffc9000333b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 430.562189][ T31] 3 locks held by syz-executor362/5868: [ 430.567744][ T31] #0: ffff88807c8dc0e0 (&type->s_umount_key#43){++++}-{4:4}, at: super_lock+0x2a9/0x3b0 [ 430.577684][ T31] #1: ffff888074184398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_trans_srcu_lock+0xaf/0x220 [ 430.588541][ T31] #2: ffff8880741a6710 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x542/0x1de0 [ 430.598819][ T31] [ 430.601256][ T31] ============================================= [ 430.601256][ T31] [ 430.609779][ T31] NMI backtrace for cpu 0 [ 430.609801][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) [ 430.609824][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.609837][ T31] Call Trace: [ 430.609846][ T31] [ 430.609854][ T31] dump_stack_lvl+0x189/0x250 [ 430.609882][ T31] ? __wake_up_klogd+0xd9/0x110 [ 430.609915][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.609939][ T31] ? __pfx__printk+0x10/0x10 [ 430.609979][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 430.610012][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.610040][ T31] ? _printk+0xcf/0x120 [ 430.610069][ T31] ? __pfx__printk+0x10/0x10 [ 430.610098][ T31] ? debug_show_all_locks+0x2e/0x180 [ 430.610121][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.610156][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 430.610197][ T31] watchdog+0xfee/0x1030 [ 430.610231][ T31] ? watchdog+0x1de/0x1030 [ 430.610271][ T31] kthread+0x711/0x8a0 [ 430.610303][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.610339][ T31] ? __pfx_kthread+0x10/0x10 [ 430.610369][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.610401][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.610420][ T31] ? __pfx_kthread+0x10/0x10 [ 430.610449][ T31] ret_from_fork+0x3fc/0x770 [ 430.610474][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 430.610501][ T31] ? __switch_to_asm+0x39/0x70 [ 430.610526][ T31] ? __switch_to_asm+0x33/0x70 [ 430.610551][ T31] ? __pfx_kthread+0x10/0x10 [ 430.610580][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.610624][ T31] [ 430.610632][ T31] Sending NMI from CPU 0 to CPUs 1: [ 430.772398][ C1] NMI backtrace for cpu 1 [ 430.772422][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) [ 430.772441][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.772452][ C1] RIP: 0010:_update_idle_rq_clock_pelt+0x1b/0x450 [ 430.772484][ C1] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 10 48 89 fb 48 bd 00 00 00 00 00 fc ff df <48> c7 c0 30 e4 a0 8f 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 ed 02 00 [ 430.772499][ C1] RSP: 0018:ffffc90000a08b38 EFLAGS: 00000082 [ 430.772515][ C1] RAX: 0000000000000000 RBX: ffff8880b8739e00 RCX: e573f6583726a700 [ 430.772528][ C1] RDX: 0000000000000000 RSI: ffffffff8be1b9a0 RDI: ffff8880b8739e00 [ 430.772539][ C1] RBP: dffffc0000000000 R08: ffffffff8fa0b2f7 R09: 1ffffffff1f4165e [ 430.772552][ C1] R10: dffffc0000000000 R11: fffffbfff1f4165f R12: ffff8880b8739e00 [ 430.772565][ C1] R13: dffffc0000000000 R14: 0000000000000287 R15: ffff8880b8739e00 [ 430.772577][ C1] FS: 0000000000000000(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000 [ 430.772591][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.772602][ C1] CR2: 000055dbbab12168 CR3: 000000000df38000 CR4: 00000000003526f0 [ 430.772617][ C1] Call Trace: [ 430.772626][ C1] [ 430.772677][ C1] sched_balance_update_blocked_averages+0x20a/0x1580 [ 430.772709][ C1] ? __pfx_sched_balance_update_blocked_averages+0x10/0x10 [ 430.772730][ C1] ? sched_balance_domains+0x121/0x9e0 [ 430.772750][ C1] _nohz_idle_balance+0x345/0x810 [ 430.772771][ C1] ? sched_clock+0x3f/0x60 [ 430.772801][ C1] ? __pfx__nohz_idle_balance+0x10/0x10 [ 430.772827][ C1] ? sched_balance_softirq+0x13/0x1a0 [ 430.772853][ C1] handle_softirqs+0x283/0x870 [ 430.772874][ C1] ? __irq_exit_rcu+0xca/0x1f0 [ 430.772896][ C1] ? __pfx_handle_softirqs+0x10/0x10 [ 430.772912][ C1] ? sched_clock_cpu+0x74/0x430 [ 430.772929][ C1] ? tick_do_update_jiffies64+0x54/0x310 [ 430.772953][ C1] ? irqtime_account_irq+0xb6/0x1c0 [ 430.772979][ C1] __irq_exit_rcu+0xca/0x1f0 [ 430.772997][ C1] ? __pfx___irq_exit_rcu+0x10/0x10 [ 430.773017][ C1] ? rcu_is_watching+0x15/0xb0 [ 430.773036][ C1] irq_exit_rcu+0x9/0x30 [ 430.773052][ C1] sysvec_call_function_single+0xa3/0xc0 [ 430.773071][ C1] [ 430.773076][ C1] [ 430.773083][ C1] asm_sysvec_call_function_single+0x1a/0x20 [ 430.773102][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 430.773119][ C1] Code: 53 de 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d d3 bd 21 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 [ 430.773133][ C1] RSP: 0018:ffffc90000197de0 EFLAGS: 000002c2 [ 430.773147][ C1] RAX: e573f6583726a700 RBX: ffffffff81976908 RCX: e573f6583726a700 [ 430.773160][ C1] RDX: 0000000000000001 RSI: ffffffff8d982a96 RDI: ffffffff8be1b9c0 [ 430.773172][ C1] RBP: ffffc90000197f20 R08: ffff8880b8732f5b R09: 1ffff110170e65eb [ 430.773184][ C1] R10: dffffc0000000000 R11: ffffed10170e65ec R12: ffffffff8fa0b2f0 [ 430.773197][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff11003a5db40 [ 430.773209][ C1] ? do_idle+0x1e8/0x510 [ 430.773232][ C1] default_idle+0x13/0x20 [ 430.773252][ C1] default_idle_call+0x74/0xb0 [ 430.773273][ C1] do_idle+0x1e8/0x510 [ 430.773292][ C1] ? asm_sysvec_call_function_single+0x1a/0x20 [ 430.773310][ C1] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.773328][ C1] ? __pfx_do_idle+0x10/0x10 [ 430.773352][ C1] ? do_idle+0x4ef/0x510 [ 430.773372][ C1] cpu_startup_entry+0x44/0x60 [ 430.773391][ C1] start_secondary+0x101/0x110 [ 430.773416][ C1] common_startup_64+0x13e/0x147 [ 430.773448][ C1] [ 430.773456][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.058 msecs [ 430.780820][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 430.780851][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc7-syzkaller #0 PREEMPT(full) [ 430.780888][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.780905][ T31] Call Trace: [ 430.780915][ T31] [ 430.780926][ T31] dump_stack_lvl+0x99/0x250 [ 430.780961][ T31] ? __asan_memcpy+0x40/0x70 [ 430.780998][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.781026][ T31] ? __pfx__printk+0x10/0x10 [ 430.781072][ T31] panic+0x2db/0x790 [ 430.781105][ T31] ? __pfx_panic+0x10/0x10 [ 430.781130][ T31] ? nmi_backtrace_stall_check+0x433/0x440 [ 430.781170][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 430.781209][ T31] ? nmi_trigger_cpumask_backtrace+0x2b6/0x300 [ 430.781255][ T31] watchdog+0x102d/0x1030 [ 430.781295][ T31] ? watchdog+0x1de/0x1030 [ 430.781340][ T31] kthread+0x711/0x8a0 [ 430.781377][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.781413][ T31] ? __pfx_kthread+0x10/0x10 [ 430.781448][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.781486][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.781510][ T31] ? __pfx_kthread+0x10/0x10 [ 430.781543][ T31] ret_from_fork+0x3fc/0x770 [ 430.781571][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 430.781603][ T31] ? __switch_to_asm+0x39/0x70 [ 430.781632][ T31] ? __switch_to_asm+0x33/0x70 [ 430.781661][ T31] ? __pfx_kthread+0x10/0x10 [ 430.781694][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.781744][ T31] [ 431.290208][ T31] Kernel Offset: disabled [ 431.294613][ T31] Rebooting in 86400 seconds..