./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor869974514 <...> Warning: Permanently added '10.128.0.4' (ED25519) to the list of known hosts. execve("./syz-executor869974514", ["./syz-executor869974514"], 0x7ffd87cbba70 /* 10 vars */) = 0 brk(NULL) = 0x55558da4b000 brk(0x55558da4bd00) = 0x55558da4bd00 arch_prctl(ARCH_SET_FS, 0x55558da4b380) = 0 set_tid_address(0x55558da4b650) = 5835 set_robust_list(0x55558da4b660, 24) = 0 rseq(0x55558da4bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor869974514", 4096) = 27 getrandom("\xf5\x5c\x52\x85\xaa\xfb\x95\xa2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558da4bd00 brk(0x55558da6cd00) = 0x55558da6cd00 brk(0x55558da6d000) = 0x55558da6d000 mprotect(0x7f1b4f2be000, 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.hsV9uV", 0700) = 0 chmod("./syzkaller.hsV9uV", 0777) = 0 chdir("./syzkaller.hsV9uV") = 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 5837 attached [pid 5837] set_robust_list(0x55558da4b660, 24 [pid 5835] <... clone resumed>, child_tidptr=0x55558da4b650) = 5837 [pid 5837] <... set_robust_list resumed>) = 0 [pid 5837] chdir("./0") = 0 [pid 5837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5837] setpgid(0, 0) = 0 [pid 5837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5837] write(3, "1000", 4) = 4 [pid 5837] close(3) = 0 [pid 5837] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5837] write(1, "executing program\n", 18executing program ) = 18 [pid 5837] memfd_create("syzkaller", 0) = 3 [pid 5837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1b46c00000 [pid 5837] 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 5837] munmap(0x7f1b46c00000, 138412032) = 0 [pid 5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5837] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5837] close(3) = 0 [pid 5837] close(4) = 0 [pid 5837] mkdir("./file0", 0777) = 0 [ 89.999303][ T5837] loop0: detected capacity change from 0 to 32768 [ 90.100772][ T5837] 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 [ 90.123484][ T5837] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 90.131775][ T5837] bcachefs (loop0): Version upgrade required: [ 90.131775][ T5837] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 90.131775][ T5837] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.25: extent_flags [pid 5837] mount("/dev/loop0", "./file0", "bcachefs", MS_POSIXACL, "fsck,inline_data,nocow,degraded,str_hash=siphash,norecovery,discard,reconstruct_alloc,erasure_code,a"...) = 0 [pid 5837] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5837] ioctl(4, LOOP_CLR_FD) = 0 [pid 5837] close(4) = 0 [pid 5837] openat(AT_FDCWD, "./file0/file0", O_RDONLY|O_NOCTTY|O_SYNC) = 4 [ 90.131775][ T5837] 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 [ 90.202297][ T5837] bcachefs (loop0): dropping and reconstructing all alloc info [ 90.218666][ T5837] bcachefs (loop0): accounting_read... done [ 90.225530][ T5837] bcachefs (loop0): alloc_read... done [ 90.231521][ T5837] bcachefs (loop0): snapshots_read... done [ 90.238578][ T5837] bcachefs (loop0): done starting filesystem [pid 5837] ioctl(4, _IOC(_IOC_WRITE, 0xbc, 0x5, 0x10), 0x2000000000c0) = -1 EINVAL (Invalid argument) [pid 5837] exit_group(0) = ? [pid 5837] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5837, si_uid=0, si_status=0, si_utime=0, si_stime=28 /* 0.28 s */} --- 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, 0x55558da4c6f0 /* 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 [ 90.273041][ T5837] bcachefs (loop0): Cannot remove without losing data [ 90.314099][ T5835] bcachefs (loop0): shutting down [ 90.371555][ T5835] ------------[ cut here ]------------ [ 90.377090][ T5835] WARNING: CPU: 1 PID: 5835 at fs/bcachefs/super.c:1229 bch2_dev_free+0x228/0x290 [ 90.386554][ T5835] Modules linked in: [ 90.390535][ T5835] CPU: 1 UID: 0 PID: 5835 Comm: syz-executor869 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(full) [ 90.401258][ T5835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 90.411367][ T5835] RIP: 0010:bch2_dev_free+0x228/0x290 [ 90.416776][ T5835] Code: ff e8 6c f8 6e 00 4c 89 ef e8 64 f8 6e 00 48 89 df 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7e fd 90 07 e8 29 0b 36 fd 90 <0f> 0b 90 e9 09 fe ff ff e8 1b 0b 36 fd 90 0f 0b 90 e9 15 fe ff ff [ 90.436588][ T5835] RSP: 0018:ffffc9000402fb88 EFLAGS: 00010293 [ 90.442769][ T5835] RAX: ffffffff848d3937 RBX: ffff88807f216000 RCX: ffff88807df65a00 [ 90.450833][ T5835] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 90.458831][ T5835] RBP: ffff88807f2160c0 R08: ffffffff84fc4177 R09: 0000000000000000 [ 90.466897][ T5835] R10: ffff88807f216208 R11: ffffed100fe42c4a R12: ffff888078f803f0 [ 90.474956][ T5835] R13: ffff88807f2160b0 R14: ffff888078f80000 R15: ffff888078f807b2 [ 90.483008][ T5835] FS: 000055558da4b380(0000) GS:ffff8881250c9000(0000) knlGS:0000000000000000 [ 90.492111][ T5835] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 90.498703][ T5835] CR2: 000000000045bdd0 CR3: 0000000053d40000 CR4: 00000000003526f0 [ 90.506747][ T5835] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 90.514884][ T5835] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 90.522956][ T5835] Call Trace: [ 90.526264][ T5835] [ 90.529270][ T5835] bch2_fs_free+0x2b0/0x400 [ 90.533836][ T5835] deactivate_locked_super+0xc4/0x130 [ 90.539292][ T5835] cleanup_mnt+0x422/0x4c0 [ 90.543758][ T5835] ? lockdep_hardirqs_on+0x9d/0x150 [ 90.548976][ T5835] task_work_run+0x251/0x310 [ 90.553668][ T5835] ? __pfx_task_work_run+0x10/0x10 [ 90.558850][ T5835] ? path_umount+0x251/0xfb0 [ 90.563544][ T5835] ptrace_notify+0x2dc/0x390 [ 90.568190][ T5835] ? __x64_sys_umount+0x122/0x170 [ 90.573286][ T5835] ? user_path_at+0x44/0x60 [ 90.577820][ T5835] ? __pfx_ptrace_notify+0x10/0x10 [ 90.582995][ T5835] ? kmem_cache_free+0x197/0x410 [ 90.587969][ T5835] ? __x64_sys_umount+0x122/0x170 [ 90.593071][ T5835] syscall_exit_work+0xc7/0x1d0 [ 90.597955][ T5835] syscall_exit_to_user_mode+0x24a/0x340 [ 90.603665][ T5835] do_syscall_64+0x100/0x230 [ 90.608294][ T5835] ? clear_bhb_loop+0x45/0xa0 [ 90.613048][ T5835] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.618961][ T5835] RIP: 0033:0x7f1b4f246447 [ 90.623439][ T5835] 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 [ 90.643155][ T5835] RSP: 002b:00007ffddd7dc968 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 90.651656][ T5835] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f1b4f246447 [ 90.659686][ T5835] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffddd7dca20 [ 90.667685][ T5835] RBP: 00007ffddd7dca20 R08: 0000000000000000 R09: 0000000000000000 [ 90.675735][ T5835] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffddd7dda90 [ 90.683983][ T5835] R13: 000055558da4c6c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 90.692144][ T5835] [ 90.695193][ T5835] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 90.702479][ T5835] CPU: 1 UID: 0 PID: 5835 Comm: syz-executor869 Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(full) [ 90.713153][ T5835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 90.723211][ T5835] Call Trace: [ 90.726487][ T5835] [ 90.729417][ T5835] dump_stack_lvl+0x241/0x360 [ 90.734190][ T5835] ? __pfx_dump_stack_lvl+0x10/0x10 [ 90.739406][ T5835] ? __pfx__printk+0x10/0x10 [ 90.744001][ T5835] ? vscnprintf+0x5d/0x90 [ 90.748336][ T5835] panic+0x349/0x880 [ 90.752266][ T5835] ? __warn+0x174/0x4d0 [ 90.756533][ T5835] ? __pfx_panic+0x10/0x10 [ 90.760976][ T5835] __warn+0x344/0x4d0 [ 90.765050][ T5835] ? bch2_dev_free+0x228/0x290 [ 90.769831][ T5835] report_bug+0x2b3/0x500 [ 90.774169][ T5835] ? bch2_dev_free+0x228/0x290 [ 90.778946][ T5835] ? bch2_dev_free+0x228/0x290 [ 90.783717][ T5835] ? bch2_dev_free+0x22a/0x290 [ 90.788493][ T5835] handle_bug+0x89/0x170 [ 90.792836][ T5835] exc_invalid_op+0x1a/0x50 [ 90.797358][ T5835] asm_exc_invalid_op+0x1a/0x20 [ 90.802218][ T5835] RIP: 0010:bch2_dev_free+0x228/0x290 [ 90.807633][ T5835] Code: ff e8 6c f8 6e 00 4c 89 ef e8 64 f8 6e 00 48 89 df 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7e fd 90 07 e8 29 0b 36 fd 90 <0f> 0b 90 e9 09 fe ff ff e8 1b 0b 36 fd 90 0f 0b 90 e9 15 fe ff ff [ 90.827255][ T5835] RSP: 0018:ffffc9000402fb88 EFLAGS: 00010293 [ 90.833333][ T5835] RAX: ffffffff848d3937 RBX: ffff88807f216000 RCX: ffff88807df65a00 [ 90.841311][ T5835] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 90.849286][ T5835] RBP: ffff88807f2160c0 R08: ffffffff84fc4177 R09: 0000000000000000 [ 90.857434][ T5835] R10: ffff88807f216208 R11: ffffed100fe42c4a R12: ffff888078f803f0 [ 90.865412][ T5835] R13: ffff88807f2160b0 R14: ffff888078f80000 R15: ffff888078f807b2 [ 90.873398][ T5835] ? percpu_ref_is_zero+0x47/0x100 [ 90.878524][ T5835] ? bch2_dev_free+0x227/0x290 [ 90.883566][ T5835] ? bch2_dev_free+0x227/0x290 [ 90.888343][ T5835] bch2_fs_free+0x2b0/0x400 [ 90.892865][ T5835] deactivate_locked_super+0xc4/0x130 [ 90.898250][ T5835] cleanup_mnt+0x422/0x4c0 [ 90.902679][ T5835] ? lockdep_hardirqs_on+0x9d/0x150 [ 90.907889][ T5835] task_work_run+0x251/0x310 [ 90.912500][ T5835] ? __pfx_task_work_run+0x10/0x10 [ 90.917624][ T5835] ? path_umount+0x251/0xfb0 [ 90.922222][ T5835] ptrace_notify+0x2dc/0x390 [ 90.926837][ T5835] ? __x64_sys_umount+0x122/0x170 [ 90.931863][ T5835] ? user_path_at+0x44/0x60 [ 90.936376][ T5835] ? __pfx_ptrace_notify+0x10/0x10 [ 90.941500][ T5835] ? kmem_cache_free+0x197/0x410 [ 90.946453][ T5835] ? __x64_sys_umount+0x122/0x170 [ 90.951487][ T5835] syscall_exit_work+0xc7/0x1d0 [ 90.956345][ T5835] syscall_exit_to_user_mode+0x24a/0x340 [ 90.961991][ T5835] do_syscall_64+0x100/0x230 [ 90.966678][ T5835] ? clear_bhb_loop+0x45/0xa0 [ 90.971365][ T5835] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 90.977264][ T5835] RIP: 0033:0x7f1b4f246447 [ 90.981694][ T5835] 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 [ 91.001304][ T5835] RSP: 002b:00007ffddd7dc968 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 91.009725][ T5835] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f1b4f246447 [ 91.017705][ T5835] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffddd7dca20 [ 91.025682][ T5835] RBP: 00007ffddd7dca20 R08: 0000000000000000 R09: 0000000000000000 [ 91.034177][ T5835] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007ffddd7dda90 [ 91.042163][ T5835] R13: 000055558da4c6c0 R14: 0000000000000001 R15: 431bde82d7b634db [ 91.050160][ T5835] [ 91.053517][ T5835] Kernel Offset: disabled [ 91.057845][ T5835] Rebooting in 86400 seconds..