./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor251800610 <...> Warning: Permanently added '10.128.0.106' (ED25519) to the list of known hosts. execve("./syz-executor251800610", ["./syz-executor251800610"], 0x7ffd61997b40 /* 10 vars */) = 0 brk(NULL) = 0x555590c65000 brk(0x555590c65d00) = 0x555590c65d00 arch_prctl(ARCH_SET_FS, 0x555590c65380) = 0 set_tid_address(0x555590c65650) = 5822 set_robust_list(0x555590c65660, 24) = 0 rseq(0x555590c65ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor251800610", 4096) = 27 getrandom("\x90\x51\xa4\xdd\x30\x01\xf2\xe2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555590c65d00 brk(0x555590c86d00) = 0x555590c86d00 brk(0x555590c87000) = 0x555590c87000 mprotect(0x7fd1aad18000, 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 5824 attached [pid 5824] set_robust_list(0x555590c65660, 24 [pid 5822] <... clone resumed>, child_tidptr=0x555590c65650) = 5824 [pid 5824] <... set_robust_list resumed>) = 0 [pid 5824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5824] setpgid(0, 0) = 0 [pid 5824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5824] write(3, "1000", 4) = 4 [pid 5824] close(3) = 0 [pid 5824] write(1, "executing program\n", 18executing program ) = 18 [pid 5824] memfd_create("syzkaller", 0) = 3 [pid 5824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd1a2800000 [pid 5824] 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 5824] munmap(0x7fd1a2800000, 138412032) = 0 [pid 5824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5824] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5824] close(3) = 0 [pid 5824] close(4) = 0 [pid 5824] mkdir("./file1", 0777) = 0 [ 96.439214][ T5824] loop0: detected capacity change from 0 to 32768 [ 96.490307][ T5824] bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0 [ 96.529879][ T5824] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=none,background_compression=zstd,journal_flush_disabled,norecovery,reconstruct_alloc,no_data_io [ 96.529879][ T5824] allowing incompatible features above 0.0: (unknown version) [ 96.529879][ T5824] features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes [ 96.572522][ T5824] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 96.580776][ T5824] bcachefs (loop0): Version upgrade required: [ 96.580776][ T5824] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 96.580776][ T5824] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.28: inode_has_case_insensitive [ 96.580776][ T5824] running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,check_rebalance_work,set_fs_needs_rebalance [ 96.654573][ T5824] bcachefs (loop0): dropping and reconstructing all alloc info [ 96.674835][ T5824] bcachefs (loop0): btree node read error at btree inodes level 0/0 [ 96.674860][ T5824] u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq 7589ab5e0c11cc7a written 24 min_key POS_MIN durability: 1 ptr: 0:38:0 gen 0 [ 96.674872][ T5824] loop0 node offset 0/24 bset u64s 0: invalid bkey format: field 2 too large: 4294967295 + 9895604649984 > 4294967295 [ 96.674883][ T5824] u64s 3 fields 64:0, 64:0, 32:9895604649984, 0:0, 0:0, 0:0 [ 96.674891][ T5824] flagging btree inodes lost data [ 96.674899][ T5824] running recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0) [ 96.674909][ T5824] ret btree_node_read_validate_error [ 96.738570][ T5824] bcachefs (loop0): error reading btree root btree=inodes level=0: btree_node_read_error, fixing [ 96.751712][ T5824] bcachefs (loop0): btree node read error at btree dirents level 0/0 [ 96.751728][ T5824] u64s 11 type btree_ptr_v2 18446744069414846463:U64_MAX:U32_MAX len 0 ver 281474976710656: seq 9aa2890000ce4bdf written 24 min_key POS_MIN durability: 1 ptr: 0:41:0 gen 0 [ 96.751741][ T5824] loop0 node offset 0/24: got wrong btree node: got [ 96.751749][ T5824] btree=dirents level=0 seq 9aa2895aefce4bdf 1 [ 96.751757][ T5824] min: POS_MIN [ 96.751764][ T5824] max: SPOS_MAX [ 96.751771][ T5824] flagging btree dirents lost data [ 96.751778][ T5824] ret btree_node_read_validate_error [ 96.809293][ T5824] bcachefs (loop0): error reading btree root btree=dirents level=0: btree_node_read_error, fixing [ 96.822738][ T5824] bcachefs (loop0): btree node read error at btree subvolumes level 0/0 [ 96.822753][ T5824] u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq c0bef60d07ceb940 written 16 min_key POS_MIN durability: 1 ptr: 0:35:0 gen 0 [ 96.822765][ T5824] loop0 node offset 0/16 bset u64s 0: invalid bkey format: field 2 too large: 4294967295 + 3298534883328 > 4294967295 [ 96.822776][ T5824] u64s 3 fields 64:0, 64:0, 32:3298534883328, 0:0, 0:0, 0:0 [ 96.822784][ T5824] flagging btree subvolumes lost data [ 96.822792][ T5824] ret btree_node_read_validate_error [ 96.876224][ T5824] bcachefs (loop0): error reading btree root btree=subvolumes level=0: btree_node_read_error, fixing [ 96.888652][ T5824] bcachefs (loop0): btree node read error at btree snapshots level 0/0 [ 96.888667][ T5824] u64s 11 type btree_ptr_v2 SPOS_MAX len 0 ver 0: seq ebb8d5a9e3463bdb written 16 min_key POS_MIN durability: 1 ptr: 0:32:0 gen 0 [ 96.888679][ T5824] loop0 node offset 0/16 bset u64s 0: incorrect btree id [ 96.888688][ T5824] flagging btree snapshots lost data [ 96.888695][ T5824] running recovery pass reconstruct_snapshots (21), currently at recovery_pass_empty (0) [ 96.888705][ T5824] ret btree_node_read_validate_error [ 96.939493][ T5824] bcachefs (loop0): error reading btree root btree=snapshots level=0: btree_node_read_error, fixing [ 96.952586][ T5824] bcachefs (loop0): scan_for_btree_nodes... [ 96.959989][ T5827] bcachefs (loop0): invalid bkey in btree_node btree=subvolumes level=0: u64s 8 type snapshot 0:4294967295:0 len 0 ver 0: subvol parent 0 children 0 0 subvol 1 tree 0 [ 96.960015][ T5827] invalid key type for btree subvolumes (snapshot), deleting [ 96.998344][ T5827] ------------[ cut here ]------------ [ 97.003923][ T5827] kernel BUG at fs/bcachefs/bkey.c:389! [ 97.009719][ T5827] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 97.015998][ T5827] CPU: 1 UID: 0 PID: 5827 Comm: read_btree_node Not tainted 6.15.0-syzkaller-07774-g90b83efa6701 #0 PREEMPT(full) [ 97.028070][ T5827] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 97.038236][ T5827] RIP: 0010:bch2_bkey_pack_pos_lossy+0x13de/0x24e0 [ 97.044772][ T5827] Code: e8 57 ce 08 fe 48 ba 00 00 00 00 00 fc ff df e9 a5 f8 ff ff e8 c3 d5 a7 fd 90 0f 0b e8 bb d5 a7 fd 90 0f 0b e8 b3 d5 a7 fd 90 <0f> 0b e8 ab d5 a7 fd 90 0f 0b e8 a3 d5 a7 fd 90 0f 0b f3 0f 1e fa [ 97.064405][ T5827] RSP: 0018:ffffc9000438eb40 EFLAGS: 00010293 [ 97.070488][ T5827] RAX: ffffffff8418244d RBX: 0000090000000000 RCX: ffff8880352c0000 [ 97.078482][ T5827] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000090000000000 [ 97.086510][ T5827] RBP: ffffc9000438ed78 R08: ffffffffffffffff R09: ffffffffffffffff [ 97.094488][ T5827] R10: ffffffffffffffff R11: ffffffffffffffff R12: ffff888027c138c4 [ 97.102466][ T5827] R13: fffff700ffffffff R14: 0000000000000000 R15: fffffffffffffffe [ 97.110452][ T5827] FS: 0000000000000000(0000) GS:ffff888125d98000(0000) knlGS:0000000000000000 [ 97.119388][ T5827] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 97.125977][ T5827] CR2: 000055cd88f3ca70 CR3: 0000000023cb6000 CR4: 00000000003526f0 [ 97.133981][ T5827] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 97.142149][ T5827] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 97.150153][ T5827] Call Trace: [ 97.153447][ T5827] [ 97.156396][ T5827] ? __pfx___bch2_inode_validate+0x10/0x10 [ 97.162224][ T5827] ? __pfx_bch2_bkey_pack_pos_lossy+0x10/0x10 [ 97.168309][ T5827] ? lockdep_hardirqs_on+0x9c/0x150 [ 97.173554][ T5827] ? __build_ro_aux_tree+0xafc/0x1800 [ 97.178964][ T5827] __build_ro_aux_tree+0xb21/0x1800 [ 97.184196][ T5827] ? __pfx___build_ro_aux_tree+0x10/0x10 [ 97.189847][ T5827] ? bch2_bkey_val_validate+0x212/0x400 [ 97.195403][ T5827] ? __pfx_bch2_bkey_val_validate+0x10/0x10 [ 97.201310][ T5827] ? __asan_memset+0x22/0x50 [ 97.205911][ T5827] bch2_bset_build_aux_tree+0x3f5/0x570 [ 97.211468][ T5827] bch2_btree_node_read_done+0x39e4/0x4f60 [ 97.217298][ T5827] ? __pfx_bch2_btree_node_read_done+0x10/0x10 [ 97.223465][ T5827] ? bch2_extent_ptr_to_text+0x5a/0x900 [ 97.229034][ T5827] ? bch2_extent_ptr_to_text+0x5a/0x900 [ 97.234584][ T5827] ? bch2_bkey_ptrs_to_text+0x1161/0x1310 [ 97.240317][ T5827] ? bch2_printbuf_make_room+0xdb/0x360 [ 97.245877][ T5827] ? enumerated_ref_put+0xbe/0x270 [ 97.250995][ T5827] btree_node_read_work+0x426/0xe30 [ 97.256219][ T5827] ? __pfx_btree_node_read_work+0x10/0x10 [ 97.261962][ T5827] ? bch2_latency_acct+0x436/0x520 [ 97.267095][ T5827] ? __pfx_bch2_latency_acct+0x10/0x10 [ 97.272572][ T5827] ? bio_associate_blkg+0x6d/0x230 [ 97.277713][ T5827] bch2_btree_node_read+0x887/0x29f0 [ 97.283019][ T5827] ? bch2_btree_node_fill+0x954/0x14f0 [ 97.288495][ T5827] ? __pfx_bch2_btree_node_read+0x10/0x10 [ 97.294856][ T5827] ? __mutex_unlock_slowpath+0x1cd/0x700 [ 97.300514][ T5827] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 97.306509][ T5827] ? __pfx___bch2_btree_node_hash_insert+0x10/0x10 [ 97.313046][ T5827] ? bch2_btree_node_mem_alloc+0xcd9/0x1820 [ 97.318963][ T5827] ? six_unlock_ip+0x302/0x430 [ 97.323744][ T5827] ? bch2_btree_node_fill+0xb47/0x14f0 [ 97.329221][ T5827] bch2_btree_node_fill+0xd12/0x14f0 [ 97.334514][ T5827] ? __pfx_bch2_btree_cache_cmp_fn+0x10/0x10 [ 97.340506][ T5827] ? __pfx_bch2_btree_node_fill+0x10/0x10 [ 97.346231][ T5827] ? btree_cache_find+0xf4/0x2d0 [ 97.351172][ T5827] ? btree_cache_find+0xf4/0x2d0 [ 97.356111][ T5827] ? btree_cache_find+0x26f/0x2d0 [ 97.361157][ T5827] ? __pfx_btree_cache_find+0x10/0x10 [ 97.366556][ T5827] bch2_btree_node_get_noiter+0xa2c/0x1000 [ 97.372398][ T5827] read_btree_nodes_worker+0x1319/0x1e20 [ 97.378043][ T5827] ? read_btree_nodes_worker+0xcef/0x1e20 [ 97.383776][ T5827] ? __pfx_read_btree_nodes_worker+0x10/0x10 [ 97.389780][ T5827] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 97.395691][ T5827] ? lockdep_hardirqs_on+0x9c/0x150 [ 97.400915][ T5827] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 97.406836][ T5827] ? __kthread_parkme+0x7b/0x200 [ 97.411794][ T5827] ? __kthread_parkme+0x1a1/0x200 [ 97.416842][ T5827] kthread+0x70e/0x8a0 [ 97.420923][ T5827] ? __pfx_read_btree_nodes_worker+0x10/0x10 [ 97.426919][ T5827] ? __pfx_kthread+0x10/0x10 [ 97.431518][ T5827] ? _raw_spin_unlock_irq+0x23/0x50 [ 97.436746][ T5827] ? lockdep_hardirqs_on+0x9c/0x150 [ 97.441976][ T5827] ? __pfx_kthread+0x10/0x10 [ 97.446591][ T5827] ret_from_fork+0x3fc/0x770 [ 97.451228][ T5827] ? __pfx_ret_from_fork+0x10/0x10 [ 97.456367][ T5827] ? __switch_to_asm+0x39/0x70 [ 97.461146][ T5827] ? __switch_to_asm+0x33/0x70 [ 97.465938][ T5827] ? __pfx_kthread+0x10/0x10 [ 97.470562][ T5827] ret_from_fork_asm+0x1a/0x30 [ 97.475345][ T5827] [ 97.478378][ T5827] Modules linked in: [ 97.482574][ T5827] ---[ end trace 0000000000000000 ]--- [ 97.488903][ T9] cfg80211: failed to load regulatory.db [ 97.507260][ T5827] RIP: 0010:bch2_bkey_pack_pos_lossy+0x13de/0x24e0 [ 97.513972][ T5827] Code: e8 57 ce 08 fe 48 ba 00 00 00 00 00 fc ff df e9 a5 f8 ff ff e8 c3 d5 a7 fd 90 0f 0b e8 bb d5 a7 fd 90 0f 0b e8 b3 d5 a7 fd 90 <0f> 0b e8 ab d5 a7 fd 90 0f 0b e8 a3 d5 a7 fd 90 0f 0b f3 0f 1e fa [ 97.533784][ T5827] RSP: 0018:ffffc9000438eb40 EFLAGS: 00010293 [ 97.540502][ T5827] RAX: ffffffff8418244d RBX: 0000090000000000 RCX: ffff8880352c0000 [ 97.549492][ T5827] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000090000000000 [ 97.557511][ T5827] RBP: ffffc9000438ed78 R08: ffffffffffffffff R09: ffffffffffffffff [ 97.565568][ T5827] R10: ffffffffffffffff R11: ffffffffffffffff R12: ffff888027c138c4 [ 97.574526][ T5827] R13: fffff700ffffffff R14: 0000000000000000 R15: fffffffffffffffe [ 97.582631][ T5827] FS: 0000000000000000(0000) GS:ffff888125d98000(0000) knlGS:0000000000000000 [ 97.591680][ T5827] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 97.598353][ T5827] CR2: 00007ffc5c82cb90 CR3: 0000000022764000 CR4: 00000000003526f0 [ 97.606362][ T5827] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 97.614439][ T5827] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 97.622561][ T5827] Kernel panic - not syncing: Fatal exception [ 97.629136][ T5827] Kernel Offset: disabled [ 97.633495][ T5827] Rebooting in 86400 seconds..