./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2898425568 <...> Warning: Permanently added '10.128.0.250' (ED25519) to the list of known hosts. execve("./syz-executor2898425568", ["./syz-executor2898425568"], 0x7ffe9001ad20 /* 10 vars */) = 0 brk(NULL) = 0x555583f31000 brk(0x555583f31d00) = 0x555583f31d00 arch_prctl(ARCH_SET_FS, 0x555583f31380) = 0 set_tid_address(0x555583f31650) = 5848 set_robust_list(0x555583f31660, 24) = 0 rseq(0x555583f31ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2898425568", 4096) = 28 getrandom("\x7e\x7e\xd7\x11\x31\x9c\x72\x45", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555583f31d00 brk(0x555583f52d00) = 0x555583f52d00 brk(0x555583f53000) = 0x555583f53000 mprotect(0x7f3cdbcc4000, 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 5849 attached , child_tidptr=0x555583f31650) = 5849 [pid 5849] set_robust_list(0x555583f31660, 24) = 0 [pid 5849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5849] setpgid(0, 0) = 0 [pid 5849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5849] write(3, "1000", 4) = 4 [pid 5849] close(3) = 0 executing program [pid 5849] write(1, "executing program\n", 18) = 18 [pid 5849] memfd_create("syzkaller", 0) = 3 [pid 5849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3cd3804000 [pid 5849] 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 5849] munmap(0x7f3cd3804000, 138412032) = 0 [pid 5849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5849] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5849] close(3) = 0 [pid 5849] close(4) = 0 [pid 5849] mkdir("./file1", 0777) = 0 [ 97.269081][ T5849] loop0: detected capacity change from 0 to 32768 [ 97.300577][ T5849] ======================================================= [ 97.300577][ T5849] WARNING: The mand mount option has been deprecated and [ 97.300577][ T5849] and is ignored by this kernel. Remove the mand [ 97.300577][ T5849] option from the mount to silence this warning. [ 97.300577][ T5849] ======================================================= [ 97.439379][ T5849] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,promote_target=invalid device 15,nojournal_transaction_names [ 97.439393][ T5849] allowing incompatible features above 0.0: (unknown version) [ 97.439398][ T5849] features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes [ 97.439415][ T5849] bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0 [ 97.439652][ T5849] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 97.439930][ [ 97.439930][ T5849] bcachefs (loop0): Version upgrade required: [ 97.439930][ T5849] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 97.439930][ T5849] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.28: inode_has_case_insensitive [ 97.439930][ T5849] 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 [ 97.471775][ T5849] bcachefs (loop0): invalid bkey in btree_node btree=alloc level=0: u64s 12 type alloc_v4 0:37:0 len 0 ver 0: [ 97.471793][ T5849] gen 0 oldest_gen 6 data_type free [ 97.471800][ T5849] journal_seq_nonempty 6 [ 97.471807][ T5849] journal_seq_empty 0 [ 97.471812][ T5849] need_discard 1 [ 97.471818][ T5849] need_inc_gen 1 [ 97.471825][ T5849] dirty_sectors 0 [ 97.471831][ T5849] stripe_sectors 1769482 [ 97.471837][ T5849] cached_sectors 0 [ 97.471843][ T5849] stripe 0 [ 97.471849][ T5849] stripe_redundancy 0 [ 97.471855][ T5849] io_time[READ] 1 [ 97.471862][ T5849] io_time[WRITE] 1024 [ 97.471868][ T5849] fragmentation 0 [ 97.471874][ T5849] bp_start 7 [ 97.471880][ T5849] [ 97.471885][ T5849] invalid data type (got 0 should be 9), deleting [ 97.490213][ T5849] bcachefs (loop0): btree node read error at btree (unknown btree 36) level 0/0 [ 97.490228][ T5849] 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 [ 97.490238][ T5849] loop0 node offset 0/24 bset u64s 0: incorrect btree id [ 97.490246][ T5849] loop0 btree validate error [ 97.490252][ T5849] flagging btree (unknown btree 36) lost data [ 97.490259][ T5849] running recovery pass check_topology (2), currently at recovery_pass_empty (0) [ 97.490267][ T5849] running recovery pass check_topology (2), currently at recovery_pass_empty (0) [ 97.490275][ T5849] running recovery pass scan_for_btree_nodes (1), currently at recovery_pass_empty (0) [ 97.490283][ T5849] ret btree_node_read_err_bad_node [ 97.493880][ T5849] bcachefs (loop0): error reading btree root btree=(unknown btree 36) level=0: btree_node_read_error, fixing [ 97.496136][ T5849] bcachefs (loop0): check_topology... [ 97.497192][ T5849] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] SMP KASAN PTI [ 97.497210][ T5849] KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] [ 97.497233][ T5849] CPU: 0 UID: 0 PID: 5849 Comm: syz-executor289 Tainted: G W 6.16.0-syzkaller-11568-gd632ab86aff2 #0 PREEMPT_{RT,(full)} [ 97.497257][ T5849] Tainted: [W]=WARN [ 97.497262][ T5849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 97.497272][ T5849] RIP: 0010:kasan_byte_accessible+0x12/0x30 [ 97.497299][ T5849] Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 10 40 db 08 cc 66 66 66 66 66 66 2e [ 97.497312][ T5849] RSP: 0018:ffffc90004beee98 EFLAGS: 00010202 [ 97.497328][ T5849] RAX: dffffc0000000000 RBX: ffffffff844a7243 RCX: e699165fc746ba00 [ 97.497340][ T5849] RDX: 0000000000000000 RSI: ffffffff844a7243 RDI: 000000000000000e [ 97.497350][ T5849] RBP: ffffffff8417e6ec R08: 0000000000000001 R09: 0000000000000000 [ 97.497360][ T5849] R10: dffffc0000000000 R11: fffffbfff1e39ee7 R12: 0000000000000001 [ 97.497371][ T5849] R13: 0000000000000070 R14: 0000000000000070 R15: 0000000000000001 [ 97.497382][ T5849] FS: 0000555583f31380(0000) GS:ffff8881268cd000(0000) knlGS:0000000000000000 [ 97.497396][ T5849] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 97.497407][ T5849] CR2: 000055def4af5be0 CR3: 000000003a4b8000 CR4: 00000000003526f0 [ 97.497422][ T5849] Call Trace: [ 97.497433][ T5849] [ 97.497439][ T5849] __kasan_check_byte+0x12/0x40 [ 97.497460][ T5849] lock_acquire+0x8d/0x360 [ 97.497479][ T5849] ? lockdep_hardirqs_on+0x9c/0x150 [ 97.497496][ T5849] ? bch2_printbuf_exit+0x6f/0xb0 [ 97.497513][ T5849] ? bch2_check_topology+0x57c/0xe00 [ 97.497530][ T5849] ? bch2_check_topology+0x57c/0xe00 [ 97.497545][ T5849] six_lock_ip_waiter+0xa3/0x170 [ 97.497567][ T5849] ? bch2_check_topology+0x57c/0xe00 [ 97.497582][ T5849] ? __pfx_bch2_six_check_for_deadlock+0x10/0x10 [ 97.497606][ T5849] bch2_check_topology+0x61a/0xe00 [ 97.497623][ T5849] ? bch2_check_topology+0x57c/0xe00 [ 97.497648][ T5849] ? __pfx_bch2_check_topology+0x10/0x10 [ 97.497663][ T5849] ? __bch2_print+0x176/0x220 [ 97.497685][ T5849] ? __pfx___bch2_print+0x10/0x10 [ 97.497707][ T5849] ? rt_spin_unlock+0x65/0x80 [ 97.497729][ T5849] __bch2_run_recovery_passes+0x3ba/0x1060 [ 97.497753][ T5849] bch2_run_recovery_passes+0x184/0x210 [ 97.497769][ T5849] bch2_fs_recovery+0x2690/0x3a50 [ 97.497796][ T5849] ? __pfx_bch2_fs_recovery+0x10/0x10 [ 97.497817][ T5849] ? lockdep_unlock+0x89/0x120 [ 97.497835][ T5849] ? validate_chain+0x897/0x2140 [ 97.497857][ T5849] ? __lock_acquire+0xab9/0xd20 [ 97.497879][ T5849] ? do_raw_spin_lock+0x121/0x290 [ 97.497899][ T5849] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 97.497915][ T5849] ? lockdep_hardirqs_on+0x9c/0x150 [ 97.497930][ T5849] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 97.497946][ T5849] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 97.497961][ T5849] ? do_raw_spin_lock+0x121/0x290 [ 97.497981][ T5849] ? rt_mutex_slowunlock+0x493/0x8a0 [ 97.497998][ T5849] ? lockdep_hardirqs_on+0x9c/0x150 [ 97.498013][ T5849] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 97.498028][ T5849] ? __pfx_rt_mutex_slowunlock+0x10/0x10 [ 97.498046][ T5849] ? bch2_fs_start+0xa0f/0xda0 [ 97.498060][ T5849] bch2_fs_start+0xaaf/0xda0 [ 97.498072][ T5849] ? bch2_fs_start+0x5e7/0xda0 [ 97.498086][ T5849] ? __pfx_bch2_fs_start+0x10/0x10 [ 97.498106][ T5849] ? sget+0x267/0x620 [ 97.498124][ T5849] bch2_fs_get_tree+0xb39/0x1520 [ 97.498154][ T5849] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 97.498184][ T5849] ? __pfx_vfs_parse_comma_sep+0x10/0x10 [ 97.498205][ T5849] ? rcu_is_watching+0x15/0xb0 [ 97.498227][ T5849] ? cap_capable+0x11f/0x460 [ 97.498240][ T5849] ? safesetid_security_capable+0xa9/0x1a0 [ 97.498259][ T5849] vfs_get_tree+0x8f/0x2b0 [ 97.498278][ T5849] do_new_mount+0x2a2/0x9e0 [ 97.498299][ T5849] ? __pfx_do_new_mount+0x10/0x10 [ 97.498318][ T5849] ? path_mount+0x61c/0xfe0 [ 97.498340][ T5849] __se_sys_mount+0x317/0x410 [ 97.498362][ T5849] ? __pfx___se_sys_mount+0x10/0x10 [ 97.498381][ T5849] ? rcu_is_watching+0x15/0xb0 [ 97.498404][ T5849] ? __x64_sys_mount+0x20/0xc0 [ 97.498430][ T5849] do_syscall_64+0xfa/0x3b0 [ 97.498447][ T5849] ? lockdep_hardirqs_on+0x9c/0x150 [ 97.498461][ T5849] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 97.498477][ T5849] ? clear_bhb_loop+0x60/0xb0 [ 97.498494][ T5849] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 97.498509][ T5849] RIP: 0033:0x7f3cdbc4c12a [ 97.498528][ T5849] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 97.498540][ T5849] RSP: 002b:00007ffc00a48558 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 97.498556][ T5849] RAX: ffffffffffffffda RBX: 00007ffc00a48570 RCX: 00007f3cdbc4c12a [ 97.498567][ T5849] RDX: 00002000000000c0 RSI: 0000200000000180 RDI: 00007ffc00a48570 [ 97.498579][ T5849] RBP: 0000200000000180 R08: 00007ffc00a485b0 R09: 000000000000593f [ 97.498590][ T5849] R10: 0000000001808044 R11: 0000000000000282 R12: 00002000000000c0 [ 97.498601][ T5849] R13: 00007ffc00a485b0 R14: 0000000000000003 R15: 0000000001808044 [ 97.498618][ T5849] [ 97.498623][ T5849] Modules linked in: [ 97.498638][ T5849] ---[ end trace 0000000000000000 ]--- [ 97.498649][ T5849] RIP: 0010:kasan_byte_accessible+0x12/0x30 [ 97.498669][ T5849] Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 10 40 db 08 cc 66 66 66 66 66 66 2e [ 97.498681][ T5849] RSP: 0018:ffffc90004beee98 EFLAGS: 00010202 [ 97.498694][ T5849] RAX: dffffc0000000000 RBX: ffffffff844a7243 RCX: e699165fc746ba00 [ 97.498706][ T5849] RDX: 0000000000000000 RSI: ffffffff844a7243 RDI: 000000000000000e [ 97.498717][ T5849] RBP: ffffffff8417e6ec R08: 0000000000000001 R09: 0000000000000000 [ 97.498727][ T5849] R10: dffffc0000000000 R11: fffffbfff1e39ee7 R12: 0000000000000001 [ 97.498738][ T5849] R13: 0000000000000070 R14: 0000000000000070 R15: 0000000000000001 [ 97.498748][ T5849] FS: 0000555583f31380(0000) GS:ffff8881268cd000(0000) knlGS:0000000000000000 [ 97.498762][ T5849] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 97.498773][ T5849] CR2: 000055def4af5be0 CR3: 000000003a4b8000 CR4: 00000000003526f0 [ 97.498789][ T5849] Kernel panic - not syncing: Fatal exception [ 97.499134][ T5849] Kernel Offset: disabled