./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4264723336 <...> Warning: Permanently added '10.128.1.84' (ED25519) to the list of known hosts. execve("./syz-executor4264723336", ["./syz-executor4264723336"], 0x7ffd9ef6cb00 /* 10 vars */) = 0 brk(NULL) = 0x5555663b5000 brk(0x5555663b5d00) = 0x5555663b5d00 arch_prctl(ARCH_SET_FS, 0x5555663b5380) = 0 set_tid_address(0x5555663b5650) = 5837 set_robust_list(0x5555663b5660, 24) = 0 rseq(0x5555663b5ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4264723336", 4096) = 28 getrandom("\x0c\x38\x2d\x80\xa5\xf7\x04\x16", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555663b5d00 brk(0x5555663d6d00) = 0x5555663d6d00 brk(0x5555663d7000) = 0x5555663d7000 mprotect(0x7fa1ac3eb000, 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 5838 attached [pid 5838] set_robust_list(0x5555663b5660, 24) = 0 [pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5837] <... clone resumed>, child_tidptr=0x5555663b5650) = 5838 [pid 5838] setpgid(0, 0) = 0 [pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5838] write(3, "1000", 4) = 4 [pid 5838] close(3executing program ) = 0 [pid 5838] write(1, "executing program\n", 18) = 18 [pid 5838] memfd_create("syzkaller", 0) = 3 [pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa1a3e00000 [pid 5838] 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 5838] munmap(0x7fa1a3e00000, 138412032) = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5838] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5838] close(3) = 0 [pid 5838] close(4) = 0 [pid 5838] mkdir("./file0", 0777) = 0 [ 164.372898][ T5838] loop0: detected capacity change from 0 to 32768 [ 164.499181][ T5838] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,background_compression=lz4,nojournal_transaction_names,version_upgrade=none [ 164.499181][ T5838] allowing incompatible features above 0.0: (unknown version) [ 164.526599][ T5838] bcachefs (loop0): recovering from clean shutdown, journal seq 13 [ 164.548643][ T5838] bcachefs (loop0): accounting_read... done [ 164.555789][ T5838] bcachefs (loop0): alloc_read... done [ 164.561495][ T5838] bcachefs (loop0): snapshots_read... done [ 164.570288][ T5838] bcachefs (loop0): going read-write [ 164.580793][ T5838] bcachefs (loop0): journal_replay... done [ 164.586779][ T5838] bcachefs (loop0): resume_logged_ops... done [ 164.592945][ T5838] bcachefs (loop0): delete_dead_inodes... done [ 164.600500][ T5848] bcachefs (loop0): backpointer doesn't match extent it points to: [ 164.600521][ T5848] 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 [ 164.600538][ T5848] 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 [pid 5838] mount("/dev/loop0", "./file0", "bcachefs", 0, "version_upgrade=none,background_compression=lz4,") = 0 [pid 5838] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5838] chdir("./file0") = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5838] ioctl(4, LOOP_CLR_FD) = 0 [ 164.600556][ T5848] 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 [ 164.660063][ T5838] bcachefs (loop0): done starting filesystem [pid 5838] close(4) = 0 [pid 5838] openat(AT_FDCWD, "cpuacct.usage_sys", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5837] kill(-5838, SIGKILL) = 0 [pid 5837] kill(5838, SIGKILL) = 0 [pid 5837] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5837] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5837] getdents64(3, 0x5555663b66f0 /* 2 entries */, 32768) = 48 [pid 5837] getdents64(3, 0x5555663b66f0 /* 0 entries */, 32768) = 0 [pid 5837] close(3) = 0 [ 196.166390][ T5838] Allocator stuck? Waited for 30 seconds [ 196.166415][ T5838] Allocator debug: [ 196.166425][ T5838] capacity1536 [ 196.166435][ T5838] reserved 31232 [ 196.166445][ T5838] hidden 0 [ 196.166455][ T5838] btree 0 [ 196.166465][ T5838] data 0 [ 196.166475][ T5838] cached 0 [ 196.166484][ T5838] reserved 0 [ 196.166494][ T5838] online_reserved 768 [ 196.166504][ T5838] nr_inodes 0 [ 196.166514][ T5838] [ 196.166522][ T5838] freelist_wait waiting [ 196.166533][ T5838] open buckets allocated1 [ 196.166543][ T5838] open buckets total 1024 [ 196.166553][ T5838] open_buckets_wait empty [ 196.166563][ T5838] open_buckets_btree 0 [ 196.166573][ T5838] open_buckets_user 0 [ 196.166582][ T5838] btree reserve cache 0 [ 196.166592][ T5838] [ 196.166601][ T5838] Dev 0: [ 196.166610][ T5838] buckets sectors fragmented [ 196.166622][ T5838] free 0 0 0 [ 196.166633][ T5838] sb 0 0 0 [ 196.166645][ T5838] journal 0 0 0 [ 196.166656][ T5838] btree 0 0 0 [ 196.166668][ T5838] user 0 0 0 [ 196.166679][ T5838] cached 0 0 0 [ 196.166691][ T5838] parity 0 0 0 [ 196.166704][ T5838] stripe 0 0 0 [ 196.166715][ T5838] need_gc_gens 0 0 0 [ 196.166727][ T5838] need_discard 0 0 0 [ 196.166738][ T5838] unstriped 0 0 0 [ 196.166750][ T5838] capacity 128 [ 196.166759][ T5838] [ 196.166767][ T5838] reserves: [ 196.166776][ T5838] stripe 60 [ 196.166786][ T5838] normal 58 [ 196.166796][ T5838] copygc 56 [ 196.166805][ T5838] btree 28 [ 196.166815][ T5838] btree_copygc 0 [ 196.166825][ T5838] reclaim 0 [ 196.166835][ T5838] interior_updates 0 [ 196.166845][ T5838] [ 196.166854][ T5838] open buckets 0 [ 196.166864][ T5838] buckets to invalidate 0 [ 196.166874][ T5838] [ 196.166882][ T5838] Copygc debug: [ 196.166891][ T5838] running: 1 [ 196.166900][ T5838] copygc_wait:0 [ 196.166910][ T5838] copygc_wait_at:0 [ 196.166919][ T5838] Currently waiting for:0 B [ 196.166929][ T5838] Currently waiting since:640 KiB [ 196.166940][ T5838] Currently calculated wait:0 B [ 196.166949][ T5838] [ 196.166958][ T5838] Journal debug: [ 196.166967][ T5838] flags: replay_done,running,may_skip_flush [ 196.166979][ T5838] dirty journal entries: 0/32768 [ 196.166990][ T5838] seq: 14 [ 196.166999][ T5838] seq_ondisk: 14 [ 196.167016][ T5838] last_seq: 15 [ 196.167026][ T5838] last_seq_ondisk: 14 [ 196.167036][ T5838] flushed_seq_ondisk: 14 [ 196.167047][ T5838] watermark: stripe [ 196.167057][ T5838] each entry reserved: 321 [ 196.167066][ T5838] nr flush writes: 1 [ 196.167076][ T5838] nr noflush writes: 0 [ 196.167086][ T5838] average write size: 1.27 KiB [ 196.167096][ T5838] free buf: 65536 [ 196.167106][ T5838] nr direct reclaim: 0 [ 196.167116][ T5838] nr background reclaim: 1 [ 196.167126][ T5838] reclaim kicked: 0 [ 196.167136][ T5838] reclaim runs in: 0 ms [ 196.167146][ T5838] blocked: 0 [ 196.167156][ T5838] current entry sectors: 256 [ 196.167166][ T5838] current entry error: (No error) [ 196.167177][ T5838] current entry: closed [ 196.167187][ T5838] unwritten entries: [ 196.167196][ T5838] last buf closed [ 196.167205][ T5838] space: [ 196.167215][ T5838] discarded 256:1536 [ 196.167225][ T5838] clean ondisk 256:1536 [ 196.167235][ T5838] clean 256:1536 [ 196.167246][ T5838] total 256:2048 [ 196.167256][ T5838] dev 0: [ 196.167265][ T5838] durability 1: [ 196.167274][ T5838] nr 8 [ 196.167293][ T5838] bucket size 256 [ 196.167304][ T5838] available 6:248 [ 196.167314][ T5838] discard_idx 0 [ 196.167324][ T5838] dirty_ondisk 0 (seq 14) [ 196.167335][ T5838] dirty_idx 0 (seq 14) [ 196.167345][ T5838] cur_idx 0 (seq 14) [ 196.167356][ T5838] replicas want 1 need 1 [ 429.755362][ T31] INFO: task syz-executor426:5838 blocked for more than 143 seconds. [ 429.763538][ T31] Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 [ 429.772294][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.781758][ T31] task:syz-executor426 state:D stack:19624 pid:5838 tgid:5838 ppid:5837 task_flags:0x400140 flags:0x00004006 [ 429.794056][ T31] Call Trace: [ 429.797699][ T31] [ 429.800676][ T31] __schedule+0x168f/0x4c70 [ 429.805735][ T31] ? schedule+0x165/0x360 [ 429.810125][ T31] ? __pfx___schedule+0x10/0x10 [ 429.815492][ T31] ? schedule+0x91/0x360 [ 429.819803][ T31] schedule+0x165/0x360 [ 429.824001][ T31] ? __closure_sync+0x113/0x220 [ 429.829479][ T31] __closure_sync+0x163/0x220 [ 429.834213][ T31] ? __pfx___closure_sync+0x10/0x10 [ 429.839935][ T31] ? __bch2_wait_on_allocator+0x1c7/0x240 [ 429.845970][ T31] bch2_btree_update_start+0x1193/0x14c0 [ 429.851673][ T31] ? bch2_btree_split_leaf+0x13c/0x8f0 [ 429.857651][ T31] ? __pfx_bch2_btree_update_start+0x10/0x10 [ 429.863769][ T31] ? stack_depot_save_flags+0x42b/0x910 [ 429.869777][ T31] ? __pfx_closure_sync_fn+0x10/0x10 [ 429.875398][ T31] ? bch2_create+0x66/0xd0 [ 429.879850][ T31] ? path_openat+0x14f1/0x3830 [ 429.884649][ T31] ? do_filp_open+0x1fa/0x410 [ 429.890482][ T31] ? do_sys_openat2+0x121/0x1c0 [ 429.895683][ T31] ? __x64_sys_openat+0x138/0x170 [ 429.900753][ T31] ? do_syscall_64+0xf6/0x210 [ 429.905963][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 429.912090][ T31] bch2_btree_split_leaf+0x13c/0x8f0 [ 429.917925][ T31] bch2_trans_commit_error+0x1a8/0x1100 [ 429.923515][ T31] ? __bch2_create+0x887/0xb90 [ 429.928735][ T31] ? six_unlock_ip+0x302/0x430 [ 429.933536][ T31] ? __pfx_bch2_trans_commit_error+0x10/0x10 [ 429.940052][ T31] ? bch2_trans_verify_locks+0x31e/0x3c0 [ 429.946000][ T31] __bch2_trans_commit+0x779c/0x8ae0 [ 429.951354][ T31] ? __bch2_create+0x887/0xb90 [ 429.956587][ T31] ? __bch2_bkey_get_val_typed+0x279/0x390 [ 429.962454][ T31] ? __pfx___bch2_trans_commit+0x10/0x10 [ 429.968558][ T31] ? __bch2_bkey_get_val_typed+0x121/0x390 [ 429.974439][ T31] ? __pfx_bch2_subvol_is_ro_trans+0x10/0x10 [ 429.980980][ T31] ? from_kgid+0x1b0/0x650 [ 429.985723][ T31] ? bch2_subvolume_get+0x65/0x100 [ 429.990885][ T31] ? bch2_subvolume_get+0x7d/0x100 [ 429.996922][ T31] __bch2_create+0x887/0xb90 [ 430.001588][ T31] ? __pfx___bch2_create+0x10/0x10 [ 430.007235][ T31] ? smk_tskacc+0x2fc/0x370 [ 430.011795][ T31] ? smack_inode_permission+0x28f/0x320 [ 430.017859][ T31] ? tomoyo_path_mknod+0x142/0x190 [ 430.023029][ T31] ? generic_permission+0x2e5/0x690 [ 430.028693][ T31] bch2_create+0x66/0xd0 [ 430.032991][ T31] ? __pfx_bch2_create+0x10/0x10 [ 430.038261][ T31] path_openat+0x14f1/0x3830 [ 430.042895][ T31] ? arch_stack_walk+0xfc/0x150 [ 430.048282][ T31] ? __pfx_path_openat+0x10/0x10 [ 430.053265][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.059792][ T31] do_filp_open+0x1fa/0x410 [ 430.064345][ T31] ? __pfx_do_filp_open+0x10/0x10 [ 430.069811][ T31] ? _raw_spin_unlock+0x28/0x50 [ 430.074707][ T31] ? alloc_fd+0x64c/0x6c0 [ 430.079569][ T31] do_sys_openat2+0x121/0x1c0 [ 430.084292][ T31] ? __pfx_do_sys_openat2+0x10/0x10 [ 430.089904][ T31] ? rcu_is_watching+0x15/0xb0 [ 430.094720][ T31] __x64_sys_openat+0x138/0x170 [ 430.100169][ T31] do_syscall_64+0xf6/0x210 [ 430.104714][ T31] ? clear_bhb_loop+0x45/0xa0 [ 430.110249][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.116484][ T31] RIP: 0033:0x7fa1ac368b59 [ 430.120954][ T31] RSP: 002b:00007ffd1ccdcad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 430.130059][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa1ac368b59 [ 430.138419][ T31] RDX: 000000000000275a RSI: 0000200000000100 RDI: 00000000ffffff9c [ 430.146717][ T31] RBP: 00007fa1ac3eb5f0 R08: 000000000000f624 R09: 00005555663b64c0 [ 430.154722][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd1ccdcb00 [ 430.163222][ T31] R13: 00007ffd1ccdcd28 R14: 431bde82d7b634db R15: 00007fa1ac3b103b [ 430.171525][ T31] [ 430.174641][ T31] [ 430.174641][ T31] Showing all locks held in the system: [ 430.182976][ T31] 1 lock held by khungtaskd/31: [ 430.188123][ T31] #0: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 430.198324][ T31] 2 locks held by getty/5575: [ 430.203039][ T31] #0: ffff888030b170a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.213324][ T31] #1: ffffc9000333b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 430.224291][ T31] 5 locks held by syz-executor426/5838: [ 430.230137][ T31] #0: ffff88807d608420 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 430.239698][ T31] #1: ffff88807a6f8148 (&sb->s_type->i_mutex_key#14){+.+.}-{4:4}, at: path_openat+0x8da/0x3830 [ 430.250518][ T31] #2: ffff88807a6f8530 (&inode->ei_update_lock){+.+.}-{4:4}, at: __bch2_create+0x2f2/0xb90 [ 430.260949][ T31] #3: ffff888078884228 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x806/0xda0 [ 430.271735][ T31] #4: ffff8880788a6590 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x68f/0x14c0 [ 430.282193][ T31] 3 locks held by bch-copygc/loop/5848: [ 430.288024][ T31] [ 430.290380][ T31] ============================================= [ 430.290380][ T31] [ 430.299364][ T31] NMI backtrace for cpu 1 [ 430.299389][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 PREEMPT(full) [ 430.299413][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 430.299424][ T31] Call Trace: [ 430.299439][ T31] [ 430.299447][ T31] dump_stack_lvl+0x189/0x250 [ 430.299476][ T31] ? __wake_up_klogd+0xd9/0x110 [ 430.299501][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.299528][ T31] ? __pfx__printk+0x10/0x10 [ 430.299571][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 430.299602][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.299626][ T31] ? _printk+0xcf/0x120 [ 430.299661][ T31] ? __pfx__printk+0x10/0x10 [ 430.299694][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.299727][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 430.299758][ T31] watchdog+0xfee/0x1030 [ 430.299784][ T31] ? watchdog+0x1de/0x1030 [ 430.299815][ T31] kthread+0x70e/0x8a0 [ 430.299841][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.299862][ T31] ? __pfx_kthread+0x10/0x10 [ 430.299884][ T31] ? __pfx_kthread+0x10/0x10 [ 430.299904][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.299934][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.299965][ T31] ? __pfx_kthread+0x10/0x10 [ 430.299985][ T31] ret_from_fork+0x4b/0x80 [ 430.300002][ T31] ? __pfx_kthread+0x10/0x10 [ 430.300022][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.300067][ T31] [ 430.300074][ T31] Sending NMI from CPU 1 to CPUs 0: [ 430.446963][ C0] NMI backtrace for cpu 0 [ 430.446979][ C0] CPU: 0 UID: 0 PID: 5174 Comm: syslogd Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 PREEMPT(full) [ 430.446998][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 430.447008][ C0] RIP: 0010:_copy_to_iter+0x1a5/0x15a0 [ 430.447031][ C0] Code: 8e e8 bf e5 10 fd 45 85 ff 0f 85 88 01 00 00 49 8d 7e 10 48 89 f8 48 c1 e8 03 42 80 3c 20 00 74 05 e8 7f af 70 fd 4d 8b 6e 10 <49> 83 c6 08 4d 89 f4 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df 41 [ 430.447044][ C0] RSP: 0018:ffffc900039bf760 EFLAGS: 00000246 [ 430.447059][ C0] RAX: 1ffff92000737f7c RBX: ffffc900039bfbe8 RCX: 0000000000000001 [ 430.447071][ C0] RDX: ffffffff84aedda1 RSI: ffffffff8e6a2060 RDI: ffffc900039bfbe0 [ 430.447083][ C0] RBP: ffffc900039bf8b8 R08: ffff88805ba25a00 R09: 0000000000000006 [ 430.447093][ C0] R10: 0000000000000005 R11: 0000000000000000 R12: dffffc0000000000 [ 430.447103][ C0] R13: 00005628fa9dd950 R14: ffffc900039bfbd0 R15: 0000000000000000 [ 430.447114][ C0] FS: 00007f84a3823380(0000) GS:ffff888126102000(0000) knlGS:0000000000000000 [ 430.447128][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.447139][ C0] CR2: 00005556672a7600 CR3: 0000000033c30000 CR4: 00000000003526f0 [ 430.447153][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 430.447162][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 430.447178][ C0] Call Trace: [ 430.447185][ C0] [ 430.447196][ C0] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 430.447222][ C0] ? __pfx__copy_to_iter+0x10/0x10 [ 430.447239][ C0] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 430.447263][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 430.447285][ C0] ? __asan_memset+0x22/0x50 [ 430.447308][ C0] __skb_datagram_iter+0x100/0x960 [ 430.447329][ C0] ? __pfx_simple_copy_to_iter+0x10/0x10 [ 430.447353][ C0] skb_copy_datagram_iter+0xc5/0x230 [ 430.447374][ C0] __unix_dgram_recvmsg+0x665/0xdc0 [ 430.447403][ C0] ? __pfx___unix_dgram_recvmsg+0x10/0x10 [ 430.447427][ C0] ? __pfx___might_resched+0x10/0x10 [ 430.447453][ C0] ? folio_unlock+0x101/0x160 [ 430.447476][ C0] ? bpf_lsm_socket_recvmsg+0x9/0x20 [ 430.447492][ C0] ? unix_dgram_recvmsg+0xb1/0xd0 [ 430.447507][ C0] ? __pfx_unix_dgram_recvmsg+0x10/0x10 [ 430.447522][ C0] sock_recvmsg+0x229/0x270 [ 430.447546][ C0] sock_read_iter+0x231/0x2f0 [ 430.447567][ C0] ? __pfx_sock_read_iter+0x10/0x10 [ 430.447591][ C0] ? bpf_lsm_file_permission+0x9/0x20 [ 430.447609][ C0] ? security_file_permission+0x75/0x290 [ 430.447630][ C0] vfs_read+0x4cd/0x980 [ 430.447655][ C0] ? __pfx_vfs_read+0x10/0x10 [ 430.447679][ C0] ? __rseq_handle_notify_resume+0x37e/0x11f0 [ 430.447700][ C0] ksys_read+0x145/0x250 [ 430.447719][ C0] ? rcu_is_watching+0x15/0xb0 [ 430.447742][ C0] ? __pfx_ksys_read+0x10/0x10 [ 430.447763][ C0] ? do_syscall_64+0xba/0x210 [ 430.447782][ C0] do_syscall_64+0xf6/0x210 [ 430.447797][ C0] ? asm_common_interrupt+0x26/0x40 [ 430.447812][ C0] ? clear_bhb_loop+0x45/0xa0 [ 430.447830][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.447845][ C0] RIP: 0033:0x7f84a3977b6a [ 430.447858][ C0] Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83 [ 430.447871][ C0] RSP: 002b:00007fff10196398 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 430.447886][ C0] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f84a3977b6a [ 430.447897][ C0] RDX: 00000000000000ff RSI: 00005628fa9dd950 RDI: 0000000000000000 [ 430.447906][ C0] RBP: 00005628fa9dd910 R08: 0000000000000001 R09: 0000000000000000 [ 430.447916][ C0] R10: 00007f84a3b163a3 R11: 0000000000000246 R12: 00005628fa9dd99d [ 430.447926][ C0] R13: 00005628fa9dd950 R14: 0000000000000000 R15: 00007f84a3b5ca80 [ 430.447945][ C0] [ 430.447972][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 430.832496][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 PREEMPT(full) [ 430.844306][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 [ 430.854373][ T31] Call Trace: [ 430.857659][ T31] [ 430.860593][ T31] dump_stack_lvl+0x99/0x250 [ 430.865198][ T31] ? __asan_memcpy+0x40/0x70 [ 430.869815][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.875027][ T31] ? __pfx__printk+0x10/0x10 [ 430.879650][ T31] panic+0x2db/0x790 [ 430.883561][ T31] ? __pfx_panic+0x10/0x10 [ 430.888065][ T31] ? tick_nohz_tick_stopped+0x86/0xb0 [ 430.893448][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 430.898821][ T31] ? nmi_trigger_cpumask_backtrace+0x2b6/0x300 [ 430.904985][ T31] watchdog+0x102d/0x1030 [ 430.909323][ T31] ? watchdog+0x1de/0x1030 [ 430.913747][ T31] kthread+0x70e/0x8a0 [ 430.917821][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.922505][ T31] ? __pfx_kthread+0x10/0x10 [ 430.927099][ T31] ? __pfx_kthread+0x10/0x10 [ 430.931842][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.937088][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.942307][ T31] ? __pfx_kthread+0x10/0x10 [ 430.946908][ T31] ret_from_fork+0x4b/0x80 [ 430.951333][ T31] ? __pfx_kthread+0x10/0x10 [ 430.955931][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.960725][ T31] [ 430.964077][ T31] Kernel Offset: disabled [ 430.968426][ T31] Rebooting in 86400 seconds..