./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3702733192 <...> Warning: Permanently added '10.128.1.85' (ED25519) to the list of known hosts. execve("./syz-executor3702733192", ["./syz-executor3702733192"], 0x7ffcfbe16e80 /* 10 vars */) = 0 brk(NULL) = 0x55556f7a6000 brk(0x55556f7a6d00) = 0x55556f7a6d00 arch_prctl(ARCH_SET_FS, 0x55556f7a6380) = 0 set_tid_address(0x55556f7a6650) = 5238 set_robust_list(0x55556f7a6660, 24) = 0 rseq(0x55556f7a6ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3702733192", 4096) = 28 getrandom("\xaa\x37\xf3\x28\xb7\x83\x4e\x5c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556f7a6d00 brk(0x55556f7c7d00) = 0x55556f7c7d00 brk(0x55556f7c8000) = 0x55556f7c8000 mprotect(0x7f19a7487000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5239 attached , child_tidptr=0x55556f7a6650) = 5239 [pid 5238] openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC [pid 5239] set_robust_list(0x55556f7a6660, 24 [pid 5238] <... openat resumed>) = 3 [pid 5239] <... set_robust_list resumed>) = 0 [pid 5238] write(3, "10000000000", 11) = 11 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "20", 2) = 2 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "1", 1) = 1 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "0", 1) = 1 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "0", 1) = 1 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "1", 1) = 1 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "100", 3) = 3 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "0", 1) = 1 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "0", 1) = 1 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "7 4 1 3", 7) = 7 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "1", 1) = 1 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "1", 1) = 1 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "0", 1) = 1 [pid 5238] close(3) = 0 [pid 5238] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 5238] write(3, "5239", 4) = 4 [pid 5238] close(3) = 0 [pid 5238] kill(5239, SIGKILL) = 0 [pid 5239] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5239, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- executing program write(1, "executing program\n", 18) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f199ee00000 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 munmap(0x7f199ee00000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 [ 72.394819][ T5238] loop0: detected capacity change from 0 to 32768 [ 72.494668][ T5238] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,str_hash=crc32c,fsck,norecovery,nojournal_transaction_names [ 72.513088][ T5238] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 72.532746][ T5238] bcachefs (loop0): check_topology... done [ 72.538885][ T5238] bcachefs (loop0): accounting_read... done [ 72.546016][ T5238] bcachefs (loop0): alloc_read... done [ 72.551939][ T5238] bcachefs (loop0): stripes_read... done [ 72.557699][ T5238] bcachefs (loop0): snapshots_read... done [ 72.566326][ T5238] bcachefs (loop0): going read-write [ 72.575839][ T938] ------------[ cut here ]------------ [ 72.581544][ T938] kernel BUG at fs/bcachefs/btree_journal_iter.c:190! mount("/dev/loop0", "./file0", "bcachefs", MS_NOATIME, "btree_node_mem_ptr_optimization,inodes_32bit,directWio,fsck,acl,norecovery,acl,str_hash=crc32c,obj_u"...) = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_CLR_FD) = 0 [ 72.589635][ T938] Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI [ 72.591313][ T5238] bcachefs (loop0): done starting filesystem [ 72.596613][ T938] CPU: 0 UID: 0 PID: 938 Comm: kworker/0:2 Not tainted 6.12.0-rc3-next-20241016-syzkaller #0 [ 72.612751][ T938] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 72.622929][ T938] Workqueue: bcachefs_write_ref bch2_delete_dead_snapshots_work (bcachefs-delete-dead-snapshots/) [ 72.633553][ T938] RIP: 0010:bch2_journal_key_insert_take+0x180f/0x1830 close(4) = 0 exit_group(0) = ? [ 72.640430][ T938] Code: f1 fc ff ff e8 d2 51 78 fd 90 0f 0b e8 ca 51 78 fd 90 0f 0b e8 c2 51 78 fd 90 0f 0b e8 ba 51 78 fd 90 0f 0b e8 b2 51 78 fd 90 <0f> 0b e8 4a a1 af 07 e8 a5 51 78 fd 90 0f 0b e8 9d 51 78 fd 90 0f [ 72.660068][ T938] RSP: 0018:ffffc90004056dc0 EFLAGS: 00010293 [ 72.666252][ T938] RAX: ffffffff841c909e RBX: 0000000000000040 RCX: ffff888025d75a00 [ 72.674229][ T938] RDX: 0000000000000000 RSI: 0000000000000040 RDI: 0000000000000000 [ 72.682215][ T938] RBP: ffffc90004056f30 R08: ffffffff841c7a8e R09: 1ffff1100f020035 [ 72.690286][ T938] R10: dffffc0000000000 R11: ffffed100f020036 R12: 0000000000000000 [ 72.698373][ T938] R13: ffff888078100000 R14: dffffc0000000000 R15: ffff88807814b310 [ 72.706356][ T938] FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 72.715295][ T938] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.721884][ T938] CR2: 0000564307fd87d0 CR3: 00000000773f6000 CR4: 00000000003526f0 [ 72.729869][ T938] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.737848][ T938] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.745835][ T938] Call Trace: [ 72.749121][ T938] [ 72.752759][ T938] ? __die_body+0x5f/0xb0 [ 72.759127][ T938] ? die+0x9e/0xc0 [ 72.763058][ T938] ? do_trap+0x15a/0x3a0 [ 72.768475][ T938] ? bch2_journal_key_insert_take+0x180f/0x1830 [ 72.775799][ T938] ? do_error_trap+0x1dc/0x2c0 [ 72.780594][ T938] ? bch2_journal_key_insert_take+0x180f/0x1830 [ 72.786858][ T938] ? __pfx_do_error_trap+0x10/0x10 [ 72.792071][ T938] ? report_bug+0x3e8/0x500 [ 72.796604][ T938] ? handle_invalid_op+0x34/0x40 [ 72.801555][ T938] ? bch2_journal_key_insert_take+0x180f/0x1830 [ 72.807805][ T938] ? exc_invalid_op+0x38/0x50 [ 72.812499][ T938] ? asm_exc_invalid_op+0x1a/0x20 [ 72.817623][ T938] ? bch2_journal_key_insert_take+0x1fe/0x1830 [ 72.823807][ T938] ? bch2_journal_key_insert_take+0x180e/0x1830 [ 72.830189][ T938] ? bch2_journal_key_insert_take+0x180f/0x1830 [ 72.836453][ T938] ? __pfx_bch2_journal_key_insert_take+0x10/0x10 [ 72.843313][ T938] ? rcu_is_watching+0x15/0xb0 [ 72.848091][ T938] ? trace_kmalloc+0x1f/0xd0 [ 72.852705][ T938] ? bch2_journal_key_insert+0x8e/0x130 [ 72.858358][ T938] bch2_journal_key_insert+0xb3/0x130 [ 72.863775][ T938] do_bch2_trans_commit_to_journal_replay+0x111/0x420 [ 72.870580][ T938] __bch2_trans_commit+0x15d9/0x9420 [ 72.875894][ T938] ? __pfx_lock_acquire+0x10/0x10 [ 72.880930][ T938] ? bch2_snapshot_equiv+0x1f/0x2c0 [ 72.886152][ T938] ? __pfx_lock_release+0x10/0x10 [ 72.891203][ T938] ? __pfx___bch2_trans_commit+0x10/0x10 [ 72.896852][ T938] ? bch2_btree_delete_at+0x17c/0x230 [ 72.902563][ T938] ? __asan_memcpy+0x40/0x70 [ 72.907642][ T938] ? bch2_btree_delete_at+0x17c/0x230 [ 72.914670][ T938] bch2_delete_dead_snapshots+0x19b6/0x5ae0 [ 72.921326][ T938] ? bch2_delete_dead_snapshots+0x2a5/0x5ae0 [ 72.929843][ T938] ? __pfx_bch2_delete_dead_snapshots+0x10/0x10 [ 72.938817][ T938] ? preempt_count_add+0x93/0x190 [ 72.945748][ T938] ? unwind_next_frame+0x193b/0x22d0 [ 72.953347][ T938] ? ret_from_fork_asm+0x1a/0x30 [ 72.960099][ T938] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 72.967160][ T938] ? arch_stack_walk+0x11c/0x150 [ 72.972659][ T938] ? ret_from_fork_asm+0x1a/0x30 [ 72.977862][ T938] ? stack_trace_save+0x118/0x1d0 [ 72.983349][ T938] ? __pfx_stack_trace_save+0x10/0x10 [ 72.988743][ T938] ? check_noncircular+0x259/0x4a0 [ 72.993874][ T938] ? __pfx_lockdep_unlock+0x10/0x10 [ 72.999180][ T938] ? validate_chain+0x15c0/0x5920 [ 73.004219][ T938] ? bch2_delete_dead_snapshots+0x2a5/0x5ae0 [ 73.010207][ T938] ? __pfx_validate_chain+0x10/0x10 [ 73.015416][ T938] ? bch2_delete_dead_snapshots+0x2a5/0x5ae0 [ 73.021404][ T938] ? __pfx_stack_trace_save+0x10/0x10 [ 73.026793][ T938] ? bch2_delete_dead_snapshots+0x2a5/0x5ae0 [ 73.032784][ T938] ? format_decode+0xc5f/0x1bb0 [ 73.037851][ T938] ? bch2_delete_dead_snapshots+0x16dc/0x5ae0 [ 73.044734][ T938] ? vsnprintf+0x1ccd/0x1da0 [ 73.051092][ T938] ? __pfx_vsnprintf+0x10/0x10 [ 73.056166][ T938] ? set_worker_desc+0x15d/0x1d0 [ 73.061306][ T938] ? __pfx_lock_acquire+0x10/0x10 [ 73.066577][ T938] ? process_scheduled_works+0xa05/0x1850 [ 73.072329][ T938] ? __pfx_set_worker_desc+0x10/0x10 [ 73.077638][ T938] ? process_scheduled_works+0x976/0x1850 [ 73.083378][ T938] bch2_delete_dead_snapshots_work+0x34/0x40 [ 73.089746][ T938] process_scheduled_works+0xa63/0x1850 [ 73.095407][ T938] ? __pfx_process_scheduled_works+0x10/0x10 [ 73.101496][ T938] ? assign_work+0x364/0x3d0 [ 73.106375][ T938] worker_thread+0x870/0xd30 [ 73.110991][ T938] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 73.116922][ T938] ? __kthread_parkme+0x169/0x1d0 [ 73.121987][ T938] ? __pfx_worker_thread+0x10/0x10 [ 73.127411][ T938] kthread+0x2f0/0x390 [ 73.131594][ T938] ? __pfx_worker_thread+0x10/0x10 [ 73.136738][ T938] ? __pfx_kthread+0x10/0x10 [ 73.141347][ T938] ret_from_fork+0x4b/0x80 +++ exited with 0 +++ [ 73.145860][ T938] ? __