./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1210586429 <...> Warning: Permanently added '10.128.1.135' (ED25519) to the list of known hosts. execve("./syz-executor1210586429", ["./syz-executor1210586429"], 0x7ffe24af9ee0 /* 10 vars */) = 0 brk(NULL) = 0x55558bb20000 brk(0x55558bb20d00) = 0x55558bb20d00 arch_prctl(ARCH_SET_FS, 0x55558bb20380) = 0 set_tid_address(0x55558bb20650) = 5844 set_robust_list(0x55558bb20660, 24) = 0 rseq(0x55558bb20ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1210586429", 4096) = 28 getrandom("\x7a\x9f\xa1\x14\x3f\x2e\xf5\x6f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558bb20d00 brk(0x55558bb41d00) = 0x55558bb41d00 brk(0x55558bb42000) = 0x55558bb42000 mprotect(0x7f49b0d64000, 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 mkdir("./syzkaller.II4TzD", 0700) = 0 chmod("./syzkaller.II4TzD", 0777) = 0 chdir("./syzkaller.II4TzD") = 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 5846 attached [pid 5846] set_robust_list(0x55558bb20660, 24 [pid 5844] <... clone resumed>, child_tidptr=0x55558bb20650) = 5846 [pid 5846] <... set_robust_list resumed>) = 0 [pid 5846] chdir("./0") = 0 [pid 5846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5846] setpgid(0, 0) = 0 [pid 5846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5846] write(3, "1000", 4) = 4 [pid 5846] close(3) = 0 [pid 5846] symlink("/dev/binderfs", "./binderfs") = 0 executing program [pid 5846] write(1, "executing program\n", 18) = 18 [pid 5846] memfd_create("syzkaller", 0) = 3 [pid 5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f49a8800000 [pid 5846] 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 5846] munmap(0x7f49a8800000, 138412032) = 0 [pid 5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5846] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5846] close(3) = 0 [pid 5846] close(4) = 0 [pid 5846] mkdir("./file0", 0777) = 0 [ 88.735978][ T5846] loop0: detected capacity change from 0 to 32768 [ 88.838828][ T5846] 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 [ 88.861659][ T5846] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 88.870107][ T5846] bcachefs (loop0): Version upgrade required: [ 88.870107][ T5846] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 88.870107][ T5846] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.25: extent_flags [pid 5846] mount("/dev/loop0", "./file0", "bcachefs", MS_POSIXACL, "fsck,inline_data,nocow,degraded,str_hash=siphash,norecovery,discard,reconstruct_alloc,erasure_code,a"...) = 0 [pid 5846] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5846] ioctl(4, LOOP_CLR_FD) = 0 [ 88.870107][ T5846] 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 [ 88.941059][ T5846] bcachefs (loop0): dropping and reconstructing all alloc info [ 88.957074][ T5846] bcachefs (loop0): accounting_read... done [ 88.963901][ T5846] bcachefs (loop0): alloc_read... done [ 88.969575][ T5846] bcachefs (loop0): snapshots_read... done [ 88.976455][ T5846] bcachefs (loop0): done starting filesystem [pid 5846] close(4) = 0 [pid 5846] openat(AT_FDCWD, "./file0/file0", O_RDONLY|O_NOCTTY|O_SYNC) = 4 [pid 5846] ioctl(4, _IOC(_IOC_WRITE, 0xbc, 0x5, 0x10), 0x2000000000c0) = -1 EINVAL (Invalid argument) [pid 5846] exit_group(0) = ? [pid 5846] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5846, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=26 /* 0.26 s */} --- [ 89.060601][ T5846] bcachefs (loop0): Cannot remove without losing data umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x55558bb216f0 /* 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 [ 89.179983][ T5844] bcachefs (loop0): shutting down [ 89.237030][ T5844] ------------[ cut here ]------------ [ 89.242559][ T5844] WARNING: CPU: 0 PID: 5844 at fs/bcachefs/super.c:1229 bch2_dev_free+0x228/0x290 [ 89.252042][ T5844] Modules linked in: [ 89.256013][ T5844] CPU: 0 UID: 0 PID: 5844 Comm: syz-executor121 Not tainted 6.14.0-next-20250404-syzkaller #0 PREEMPT(full) [ 89.267606][ T5844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 89.277721][ T5844] RIP: 0010:bch2_dev_free+0x228/0x290 [ 89.283112][ T5844] Code: ff e8 4c cf 74 00 4c 89 ef e8 44 cf 74 00 48 89 df 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 ee 53 96 07 e8 59 e9 32 fd 90 <0f> 0b 90 e9 09 fe ff ff e8 4b e9 32 fd 90 0f 0b 90 e9 15 fe ff ff [ 89.303009][ T5844] RSP: 0018:ffffc9000406fb88 EFLAGS: 00010293 [ 89.309148][ T5844] RAX: ffffffff849073d7 RBX: ffff888035282000 RCX: ffff888034af9e00 [ 89.317187][ T5844] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 89.325244][ T5844] RBP: ffff8880352820c0 R08: ffffffff850552f7 R09: 0000000000000000 [ 89.333246][ T5844] R10: ffff888035282208 R11: ffffed1006a5044a R12: ffff888075e003f0 [ 89.341267][ T5844] R13: ffff8880352820b0 R14: ffff888075e00000 R15: ffff888075e007b2 [ 89.349285][ T5844] FS: 000055558bb20380(0000) GS:ffff888124f8f000(0000) knlGS:0000000000000000 [ 89.358270][ T5844] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 89.365008][ T5844] CR2: 000000000045bdd0 CR3: 00000000122a0000 CR4: 00000000003526f0 [ 89.373068][ T5844] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 89.381287][ T5844] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 89.389304][ T5844] Call Trace: [ 89.392604][ T5844] [ 89.395586][ T5844] bch2_fs_free+0x2b0/0x400 [ 89.400126][ T5844] deactivate_locked_super+0xc4/0x130 [ 89.405582][ T5844] cleanup_mnt+0x422/0x4c0 [ 89.410030][ T5844] ? lockdep_hardirqs_on+0x9d/0x150 [ 89.415323][ T5844] task_work_run+0x251/0x310 [ 89.420033][ T5844] ? __pfx_task_work_run+0x10/0x10 [ 89.425206][ T5844] ? path_umount+0x251/0xfb0 [ 89.429829][ T5844] ptrace_notify+0x2dc/0x390 [ 89.434447][ T5844] ? __x64_sys_umount+0x122/0x170 [ 89.439633][ T5844] ? user_path_at+0x44/0x60 [ 89.444192][ T5844] ? __pfx_ptrace_notify+0x10/0x10 [ 89.449411][ T5844] ? kmem_cache_free+0x197/0x410 [ 89.454413][ T5844] ? __x64_sys_umount+0x122/0x170 [ 89.459513][ T5844] syscall_exit_work+0xc7/0x1d0 [ 89.464418][ T5844] syscall_exit_to_user_mode+0x24a/0x340 [ 89.470134][ T5844] do_syscall_64+0x100/0x230 [ 89.474778][ T5844] ? clear_bhb_loop+0x45/0xa0 [ 89.479454][ T5844] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.485400][ T5844] RIP: 0033:0x7f49b0cec447 [ 89.489842][ T5844] 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 [ 89.509504][ T5844] RSP: 002b:00007ffd94723978 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 89.517972][ T5844] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49b0cec447 [ 89.525993][ T5844] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd94723a30 [ 89.533977][ T5844] RBP: 00007ffd94723a30 R08: 0000000000000000 R09: 0000000000000000 [ 89.542002][ T5844] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffd94724aa0 [ 89.550011][ T5844] R13: 000055558bb216c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 89.558072][ T5844] [ 89.561126][ T5844] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 89.568499][ T5844] CPU: 0 UID: 0 PID: 5844 Comm: syz-executor121 Not tainted 6.14.0-next-20250404-syzkaller #0 PREEMPT(full) [ 89.580033][ T5844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 89.590106][ T5844] Call Trace: [ 89.593383][ T5844] [ 89.596315][ T5844] dump_stack_lvl+0x241/0x360 [ 89.601016][ T5844] ? __pfx_dump_stack_lvl+0x10/0x10 [ 89.606218][ T5844] ? __pfx__printk+0x10/0x10 [ 89.610813][ T5844] ? vscnprintf+0x5d/0x90 [ 89.615146][ T5844] panic+0x349/0x880 [ 89.619054][ T5844] ? __warn+0x174/0x4d0 [ 89.623222][ T5844] ? __pfx_panic+0x10/0x10 [ 89.627662][ T5844] __warn+0x344/0x4d0 [ 89.631657][ T5844] ? bch2_dev_free+0x228/0x290 [ 89.636439][ T5844] report_bug+0x2b3/0x500 [ 89.640774][ T5844] ? bch2_dev_free+0x228/0x290 [ 89.645547][ T5844] ? bch2_dev_free+0x228/0x290 [ 89.650326][ T5844] ? bch2_dev_free+0x22a/0x290 [ 89.655103][ T5844] handle_bug+0x89/0x170 [ 89.659359][ T5844] exc_invalid_op+0x1a/0x50 [ 89.663874][ T5844] asm_exc_invalid_op+0x1a/0x20 [ 89.668728][ T5844] RIP: 0010:bch2_dev_free+0x228/0x290 [ 89.674114][ T5844] Code: ff e8 4c cf 74 00 4c 89 ef e8 44 cf 74 00 48 89 df 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 ee 53 96 07 e8 59 e9 32 fd 90 <0f> 0b 90 e9 09 fe ff ff e8 4b e9 32 fd 90 0f 0b 90 e9 15 fe ff ff [ 89.693721][ T5844] RSP: 0018:ffffc9000406fb88 EFLAGS: 00010293 [ 89.699804][ T5844] RAX: ffffffff849073d7 RBX: ffff888035282000 RCX: ffff888034af9e00 [ 89.707862][ T5844] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 89.715851][ T5844] RBP: ffff8880352820c0 R08: ffffffff850552f7 R09: 0000000000000000 [ 89.723825][ T5844] R10: ffff888035282208 R11: ffffed1006a5044a R12: ffff888075e003f0 [ 89.731797][ T5844] R13: ffff8880352820b0 R14: ffff888075e00000 R15: ffff888075e007b2 [ 89.739782][ T5844] ? percpu_ref_is_zero+0x47/0x100 [ 89.744900][ T5844] ? bch2_dev_free+0x227/0x290 [ 89.749676][ T5844] ? bch2_dev_free+0x227/0x290 [ 89.754455][ T5844] bch2_fs_free+0x2b0/0x400 [ 89.758971][ T5844] deactivate_locked_super+0xc4/0x130 [ 89.764357][ T5844] cleanup_mnt+0x422/0x4c0 [ 89.768786][ T5844] ? lockdep_hardirqs_on+0x9d/0x150 [ 89.774010][ T5844] task_work_run+0x251/0x310 [ 89.778606][ T5844] ? __pfx_task_work_run+0x10/0x10 [ 89.783726][ T5844] ? path_umount+0x251/0xfb0 [ 89.788334][ T5844] ptrace_notify+0x2dc/0x390 [ 89.792927][ T5844] ? __x64_sys_umount+0x122/0x170 [ 89.797959][ T5844] ? user_path_at+0x44/0x60 [ 89.802467][ T5844] ? __pfx_ptrace_notify+0x10/0x10 [ 89.807670][ T5844] ? kmem_cache_free+0x197/0x410 [ 89.812630][ T5844] ? __x64_sys_umount+0x122/0x170 [ 89.817670][ T5844] syscall_exit_work+0xc7/0x1d0 [ 89.822534][ T5844] syscall_exit_to_user_mode+0x24a/0x340 [ 89.828181][ T5844] do_syscall_64+0x100/0x230 [ 89.832778][ T5844] ? clear_bhb_loop+0x45/0xa0 [ 89.837465][ T5844] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 89.843359][ T5844] RIP: 0033:0x7f49b0cec447 [ 89.847780][ T5844] 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 [ 89.867401][ T5844] RSP: 002b:00007ffd94723978 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 89.875820][ T5844] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f49b0cec447 [ 89.883792][ T5844] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd94723a30 [ 89.891816][ T5844] RBP: 00007ffd94723a30 R08: 0000000000000000 R09: 0000000000000000 [ 89.899806][ T5844] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffd94724aa0 [ 89.907803][ T5844] R13: 000055558bb216c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 89.915808][ T5844] [ 89.919182][ T5844] Kernel Offset: disabled [ 89.923515][ T5844] Rebooting in 86400 seconds..