./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4282334456 <...> forked to background, child pid 5492 no interfaces have a carrier [ 38.626018][ T5493] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.643194][ T5493] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.59' (ED25519) to the list of known hosts. execve("./syz-executor4282334456", ["./syz-executor4282334456"], 0x7ffe7ef24450 /* 10 vars */) = 0 brk(NULL) = 0x55556f961000 brk(0x55556f961d00) = 0x55556f961d00 arch_prctl(ARCH_SET_FS, 0x55556f961380) = 0 set_tid_address(0x55556f961650) = 5823 set_robust_list(0x55556f961660, 24) = 0 rseq(0x55556f961ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4282334456", 4096) = 28 getrandom("\xf5\xb1\xc9\xb1\xd7\xcb\x62\x81", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556f961d00 brk(0x55556f982d00) = 0x55556f982d00 brk(0x55556f983000) = 0x55556f983000 mprotect(0x7f8a1f3d7000, 16384, PROT_READ) = 0 mmap(0x3ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3ffffffff000 mmap(0x400000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400000000000 mmap(0x400001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x400001000000 mkdir("./syzkaller.iNGEZv", 0700) = 0 chmod("./syzkaller.iNGEZv", 0777) = 0 chdir("./syzkaller.iNGEZv") = 0 mkdir("./0", 0777) = 0 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 5825 attached , child_tidptr=0x55556f961650) = 5825 [pid 5825] set_robust_list(0x55556f961660, 24) = 0 [pid 5825] chdir("./0") = 0 [pid 5825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5825] setpgid(0, 0) = 0 [pid 5825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5825] write(3, "1000", 4) = 4 [pid 5825] close(3) = 0 [pid 5825] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5825] write(1, "executing program\n", 18executing program ) = 18 [pid 5825] memfd_create("syzkaller", 0) = 3 [pid 5825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f8a16e00000 [pid 5825] 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 5825] munmap(0x7f8a16e00000, 138412032) = 0 [pid 5825] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5825] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5825] close(3) = 0 [pid 5825] close(4) = 0 [pid 5825] mkdir("./file0", 0777) = 0 syzkaller login: [ 65.029880][ T5825] loop0: detected capacity change from 0 to 32768 [ 65.114161][ T5825] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,erasure_code,degraded,no_splitbrain_check,fsck,norecovery,nojournal_transaction_names,reconstruct_alloc,nocow [ 65.137225][ T5825] invalid bkey in superblock btree=alloc level=1: u64s 11 type btree_ptr_v2 U64_MAX:U64_MAX:4278190080 len 201326592 ver 0: seq ac62141f8dc7e261 written 24 min_key POS_MIN durability: 1 ptr: 0:26:0 gen 0 [ 65.137247][ T5825] size != 0: delete?, fixing [ 65.162511][ T5825] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 65.170774][ T5825] bcachefs (loop0): Version upgrade required: [ 65.170774][ T5825] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 65.170774][ T5825] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.20: directory_size [ 65.170774][ T5825] 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,set_fs_needs_rebalance [ 65.241819][ T5825] bcachefs (loop0): dropping and reconstructing all alloc info [ 65.254686][ T5825] invalid bkey in btree_node btree=inodes level=0: u64s 16 type inode_v3 0:4096:4278255615 len 0 ver 0: (unpack error) [ 65.254716][ T5825] invalid variable length fields: delete?, fixing [ 65.279009][ T5825] bcachefs (loop0): accounting_read... done [ 65.286241][ T5825] bcachefs (loop0): alloc_read... done [ 65.291797][ T5825] bcachefs (loop0): stripes_read... done [ 65.297592][ T5825] bcachefs (loop0): snapshots_read... done [ 65.303900][ T5825] bcachefs (loop0): Fixed errors, running fsck a second time to verify fs is clean [pid 5825] mount("/dev/loop0", "./file0", "bcachefs", MS_POSIXACL, "fsck,inline_data,nocow,degraded,str_hash=siphash,norecovery,discard,reconstruct_alloc,erasure_code,a"...) = 0 [pid 5825] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5825] chdir("./file0") = 0 [ 65.313893][ T5825] bcachefs (loop0): done starting filesystem [pid 5825] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5825] ioctl(4, LOOP_CLR_FD) = 0 [pid 5825] close(4) = 0 [ 65.372692][ T5825] bcachefs (loop0): dirent points to inode that does not point back: [ 65.372692][ T5825] u64s 7 type dirent 4096:189491840996961599:U32_MAX len 0 ver 0: file0 -> 4098 type dir [ 65.372692][ T5825] inum: 4098:4294967295 [ 65.372692][ T5825] mode=40755 [ 65.372692][ T5825] flags=(d3c0000) [ 65.372692][ T5825] journal_seq=4 [ 65.372692][ T5825] hash_seed=ece93825deac2443 [ 65.372692][ T5825] hash_type=siphash [ 65.372692][ T5825] bi_size=0 [ 65.372692][ T5825] bi_sectors=0 [ 65.372692][ T5825] bi_version=0 [ 65.372692][ T5825] bi_atime=2770562249 [ 65.372692][ T5825] bi_ctime=2780562352 [ 65.372692][ T5825] bi_mtime=2780562352 [ 65.372692][ T5825] bi_otime=2770562249 [ 65.372692][ T5825] bi_uid=0 [ 65.372692][ T5825] bi_gid=0 [ 65.372692][ T5825] bi_nlink=0 [ 65.372692][ T5825] bi_generation=0 [ 65.372692][ T5825] bi_dev=0 [ 65.372692][ T5825] bi_data_checksum=0 [ 65.372692][ T5825] bi_compression=0 [ 65.372692][ T5825] bi_project=0 [ 65.372692][ T5825] bi_background_compression=0 [ 65.372692][ T5825] bi_data_replicas=0 [ 65.372692][ T5825] bi_promote_target=0 [ 65.372692][ T5825] bi_foreground_target=0 [ 65.372692][ T5825] bi_background_target=0 [ 65.372692][ T5825] bi_erasure_code=0 [ 65.372692][ T5825] bi_fields_set=0 [ 65.372692][ T5825] bi_dir=0 [ 65.372692][ T5825] bi_dir_offset=0 [ 65.372692][ T5825] bi_subvol=0 [ 65.372692][ T5825] bi_parent_subvol=0 [ 65.372692][ T5825] bi_nocow=0 [ 65.372692][ T5825] bi_depth=0 [ 65.372692][ T5825] bi_inodes_32bit=0 [pid 5825] chdir("./file0") = -1 ENOENT (No such file or directory) [pid 5825] exit_group(0) = ? [pid 5825] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5825, si_uid=0, si_status=0, si_utime=0, si_stime=29 /* 0.29 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [ 65.522231][ T5825] bcachefs (loop0): inconsistency detected - emergency read only at journal seq 10 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55556f9626f0 /* 4 entries */, 32768) = 112 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 [ 65.665941][ T5823] bcachefs (loop0): shutting down [ 65.679472][ T5823] VFS: Busy inodes after unmount of loop0 (bcachefs) [ 65.679637][ T5823] ------------[ cut here ]------------ [ 65.691941][ T5823] kernel BUG at fs/super.c:652! [ 65.696885][ T5823] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 65.703843][ T5823] CPU: 1 UID: 0 PID: 5823 Comm: syz-executor428 Not tainted 6.14.0-rc6-syzkaller-00003-g4d872d51bc9d #0 [ 65.714936][ T5823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 65.724985][ T5823] RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 [ 65.731164][ T5823] Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 b9 06 ee ff 48 8b 13 48 c7 c7 c0 a3 38 8c 4c 89 e6 e8 47 6b ee fe 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 [ 65.750764][ T5823] RSP: 0018:ffffc90003e9fbc8 EFLAGS: 00010246 [ 65.756828][ T5823] RAX: 0000000000000032 RBX: ffffffff8f1609c0 RCX: 303767f834e1f200 [ 65.764826][ T5823] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 65.772794][ T5823] RBP: 1ffff1100ede90f0 R08: ffffffff81a1352c R09: 1ffff920007d3f14 [ 65.780756][ T5823] R10: dffffc0000000000 R11: fffff520007d3f15 R12: ffff888076f48668 [ 65.788717][ T5823] R13: dffffc0000000000 R14: ffffffff8c737b18 R15: ffff888076f48780 [ 65.796702][ T5823] FS: 000055556f961380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 65.805630][ T5823] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.812204][ T5823] CR2: 00007ffc27789f7c CR3: 000000003512e000 CR4: 00000000003526f0 [ 65.820187][ T5823] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.828160][ T5823] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.836213][ T5823] Call Trace: [ 65.839485][ T5823] [ 65.842402][ T5823] ? __die_body+0x5f/0xb0 [ 65.846751][ T5823] ? die+0x9e/0xc0 [ 65.850485][ T5823] ? do_trap+0x15a/0x3a0 [ 65.854732][ T5823] ? generic_shutdown_super+0x2ca/0x2d0 [ 65.860279][ T5823] ? do_error_trap+0x1dc/0x2c0 [ 65.865119][ T5823] ? generic_shutdown_super+0x2ca/0x2d0 [ 65.870748][ T5823] ? __pfx_do_error_trap+0x10/0x10 [ 65.875861][ T5823] ? handle_invalid_op+0x34/0x40 [ 65.880787][ T5823] ? generic_shutdown_super+0x2ca/0x2d0 [ 65.886328][ T5823] ? exc_invalid_op+0x38/0x50 [ 65.891000][ T5823] ? asm_exc_invalid_op+0x1a/0x20 [ 65.896013][ T5823] ? __wake_up_klogd+0xcc/0x110 [ 65.900855][ T5823] ? generic_shutdown_super+0x2ca/0x2d0 [ 65.906392][ T5823] ? generic_shutdown_super+0x2c9/0x2d0 [ 65.911928][ T5823] bch2_kill_sb+0x41/0x50 [ 65.916252][ T5823] deactivate_locked_super+0xc4/0x130 [ 65.921618][ T5823] cleanup_mnt+0x41f/0x4b0 [ 65.926028][ T5823] ? lockdep_hardirqs_on+0x99/0x150 [ 65.931230][ T5823] task_work_run+0x24f/0x310 [ 65.935810][ T5823] ? __pfx_task_work_run+0x10/0x10 [ 65.940930][ T5823] ? path_umount+0x211/0xf80 [ 65.945517][ T5823] ptrace_notify+0x2d9/0x380 [ 65.950099][ T5823] ? __x64_sys_umount+0x123/0x170 [ 65.955121][ T5823] ? user_path_at+0x44/0x60 [ 65.959630][ T5823] ? __pfx_ptrace_notify+0x10/0x10 [ 65.964728][ T5823] ? kmem_cache_free+0x195/0x410 [ 65.969653][ T5823] ? __x64_sys_umount+0x123/0x170 [ 65.974670][ T5823] syscall_exit_work+0xc7/0x1d0 [ 65.979519][ T5823] syscall_exit_to_user_mode+0x24a/0x340 [ 65.985191][ T5823] do_syscall_64+0x100/0x230 [ 65.989795][ T5823] ? clear_bhb_loop+0x35/0x90 [ 65.994471][ T5823] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 66.000356][ T5823] RIP: 0033:0x7f8a1f35f387 [ 66.004768][ T5823] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 66.024366][ T5823] RSP: 002b:00007ffc27789f68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 66.032772][ T5823] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8a1f35f387 [ 66.040743][ T5823] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc2778a020 [ 66.048702][ T5823] RBP: 00007ffc2778a020 R08: 0000000000000000 R09: 0000000000000000 [ 66.056663][ T5823] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffc2778b090 [ 66.064621][ T5823] R13: 000055556f9626c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 66.072586][ T5823] [ 66.075602][ T5823] Modules linked in: [ 66.079563][ T5823] ---[ end trace 0000000000000000 ]--- [ 66.085090][ T5823] RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 [ 66.091368][ T5823] Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 b9 06 ee ff 48 8b 13 48 c7 c7 c0 a3 38 8c 4c 89 e6 e8 47 6b ee fe 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 [ 66.111156][ T5823] RSP: 0018:ffffc90003e9fbc8 EFLAGS: 00010246 [ 66.117318][ T5823] RAX: 0000000000000032 RBX: ffffffff8f1609c0 RCX: 303767f834e1f200 [ 66.125690][ T5823] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 66.133701][ T5823] RBP: 1ffff1100ede90f0 R08: ffffffff81a1352c R09: 1ffff920007d3f14 [ 66.141754][ T5823] R10: dffffc0000000000 R11: fffff520007d3f15 R12: ffff888076f48668 [ 66.149763][ T5823] R13: dffffc0000000000 R14: ffffffff8c737b18 R15: ffff888076f48780 [ 66.157787][ T5823] FS: 000055556f961380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 66.166756][ T5823] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 66.173329][ T5823] CR2: 000055556f96a6f8 CR3: 000000003512e000 CR4: 00000000003526f0 [ 66.181506][ T5823] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 66.189587][ T5823] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 66.197750][ T5823] Kernel panic - not syncing: Fatal exception [ 66.204078][ T5823] Kernel Offset: disabled [ 66.208398][ T5823] Rebooting in 86400 seconds..