./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4093780828 <...> Warning: Permanently added '10.128.0.48' (ED25519) to the list of known hosts. execve("./syz-executor4093780828", ["./syz-executor4093780828"], 0x7fffc7ae9f60 /* 10 vars */) = 0 brk(NULL) = 0x55557d4d0000 brk(0x55557d4d0d00) = 0x55557d4d0d00 arch_prctl(ARCH_SET_FS, 0x55557d4d0380) = 0 set_tid_address(0x55557d4d0650) = 5053 set_robust_list(0x55557d4d0660, 24) = 0 rseq(0x55557d4d0ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4093780828", 4096) = 28 getrandom("\x23\x22\x40\x27\xfd\x7e\x82\x07", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557d4d0d00 brk(0x55557d4f1d00) = 0x55557d4f1d00 brk(0x55557d4f2000) = 0x55557d4f2000 mprotect(0x7faec7f81000, 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 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, child_tidptr=0x55557d4d0650) = 5054 ./strace-static-x86_64: Process 5054 attached [pid 5054] set_robust_list(0x55557d4d0660, 24) = 0 [pid 5054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 executing program [pid 5054] setpgid(0, 0) = 0 [pid 5054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "1000", 4) = 4 [pid 5054] close(3) = 0 [pid 5054] write(1, "executing program\n", 18) = 18 [pid 5054] prlimit64(0, RLIMIT_RTPRIO, {rlim_cur=8, rlim_max=139}, NULL) = 0 [pid 5054] sched_setscheduler(0, SCHED_FIFO, [7]) = 0 [pid 5054] memfd_create("syzkaller", 0) = 3 [pid 5054] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7faebfa00000 [ 193.223664][ C0] sched: RT throttling activated [pid 5054] 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 5054] munmap(0x7faebfa00000, 138412032) = 0 [pid 5054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5054] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5054] close(3) = 0 [pid 5054] close(4) = 0 [pid 5054] mkdir("./bus", 0777) = 0 [ 193.734581][ T5054] loop0: detected capacity change from 0 to 32768 [ 193.860783][ T5054] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,noshard_inode_numbers,noinodes_use_key_cache,gc_reserve_bytes=512 GiB,nojournal_transaction_names [ 193.882055][ T5054] bcachefs (loop0): recovering from clean shutdown, journal seq 8 [ 193.890808][ T5054] bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.9: disk_accounting_v2 [ 193.890808][ T5054] running recovery passes: check_allocations [ 193.957369][ T5054] ===================================================== [ 193.964851][ T5054] BUG: KMSAN: uninit-value in bch2_alloc_v4_invalid+0x9b9/0x1760 [ 193.972737][ T5054] bch2_alloc_v4_invalid+0x9b9/0x1760 [ 193.978458][ T5054] bch2_bkey_val_invalid+0x2b2/0x410 [ 193.984041][ T5054] bch2_btree_node_read_done+0x5c25/0x7a80 [ 193.990008][ T5054] btree_node_read_work+0x973/0x1960 [ 193.995587][ T5054] bch2_btree_node_read+0x2e6b/0x36e0 [ 194.001533][ T5054] bch2_btree_root_read+0xa6c/0x13d0 [ 194.007194][ T5054] read_btree_roots+0x4e6/0xfb0 [ 194.012293][ T5054] bch2_fs_recovery+0x4224/0x5a20 [ 194.017660][ T5054] bch2_fs_start+0x7b2/0xbd0 [ 194.022431][ T5054] bch2_fs_get_tree+0x13e8/0x22d0 [ 194.027833][ T5054] vfs_get_tree+0xa7/0x570 [ 194.032456][ T5054] do_new_mount+0x71f/0x15e0 [ 194.037378][ T5054] path_mount+0x742/0x1f10 [ 194.041989][ T5054] __se_sys_mount+0x722/0x810 [ 194.047026][ T5054] __x64_sys_mount+0xe4/0x150 [ 194.051895][ T5054] x64_sys_call+0xed5/0x3c10 [ 194.056760][ T5054] do_syscall_64+0xcd/0x1e0 [ 194.061475][ T5054] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 194.067786][ T5054] [ 194.070227][ T5054] Uninit was created at: [ 194.074862][ T5054] ___kmalloc_large_node+0x22c/0x370 [ 194.080365][ T5054] __kmalloc_large_node_noprof+0x3f/0x1e0 [ 194.086398][ T5054] __kmalloc_node_noprof+0x9d6/0xf50 [ 194.091961][ T5054] __kvmalloc_node_noprof+0xc0/0x2d0 [ 194.097517][ T5054] bch2_btree_node_read_done+0x5214/0x7a80 [ 194.103554][ T5054] btree_node_read_work+0x973/0x1960 [ 194.109188][ T5054] bch2_btree_node_read+0x2e6b/0x36e0 [ 194.114845][ T5054] bch2_btree_root_read+0xa6c/0x13d0 [ 194.120348][ T5054] read_btree_roots+0x4e6/0xfb0 [ 194.125580][ T5054] bch2_fs_recovery+0x4224/0x5a20 [ 194.130852][ T5054] bch2_fs_start+0x7b2/0xbd0 [ 194.135733][ T5054] bch2_fs_get_tree+0x13e8/0x22d0 [ 194.141006][ T5054] vfs_get_tree+0xa7/0x570 [ 194.145730][ T5054] do_new_mount+0x71f/0x15e0 [ 194.150510][ T5054] path_mount+0x742/0x1f10 [ 194.155180][ T5054] __se_sys_mount+0x722/0x810 [ 194.160156][ T5054] __x64_sys_mount+0xe4/0x150 [ 194.165210][ T5054] x64_sys_call+0xed5/0x3c10 [ 194.170025][ T5054] do_syscall_64+0xcd/0x1e0 [ 194.174844][ T5054] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 194.180980][ T5054] [ 194.183385][ T5054] CPU: 0 UID: 0 PID: 5054 Comm: syz-executor409 Not tainted 6.10.0-syzkaller-12030-g66ebbdfdeb09 #0 [ 194.194522][ T5054] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 194.204813][ T5054] ===================================================== [ 194.211823][ T5054] Disabling lock debugging due to kernel taint [ 194.218225][ T5054] Kernel panic - not syncing: kmsan.panic set ... [ 194.224775][ T5054] CPU: 0 UID: 0 PID: 5054 Comm: syz-executor409 Tainted: G B 6.10.0-syzkaller-12030-g66ebbdfdeb09 #0 [ 194.237259][ T5054] Tainted: [B]=BAD_PAGE [ 194.241480][ T5054] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 194.251647][ T5054] Call Trace: [ 194.255009][ T5054] [ 194.258051][ T5054] dump_stack_lvl+0x216/0x2d0 [ 194.262883][ T5054] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 194.268850][ T5054] dump_stack+0x1e/0x30 [ 194.273132][ T5054] panic+0x4e2/0xcd0 [ 194.277153][ T5054] ? kmsan_get_metadata+0xf1/0x1c0 [ 194.282450][ T5054] kmsan_report+0x2c7/0x2d0 [ 194.287118][ T5054] ? __msan_warning+0x95/0x120 [ 194.292024][ T5054] ? bch2_alloc_v4_invalid+0x9b9/0x1760 [ 194.297719][ T5054] ? bch2_bkey_val_invalid+0x2b2/0x410 [ 194.303381][ T5054] ? bch2_btree_node_read_done+0x5c25/0x7a80 [ 194.309539][ T5054] ? btree_node_read_work+0x973/0x1960 [ 194.315164][ T5054] ? bch2_btree_node_read+0x2e6b/0x36e0 [ 194.320852][ T5054] ? bch2_btree_root_read+0xa6c/0x13d0 [ 194.326474][ T5054] ? read_btree_roots+0x4e6/0xfb0 [ 194.331650][ T5054] ? bch2_fs_recovery+0x4224/0x5a20 [ 194.337016][ T5054] ? bch2_fs_start+0x7b2/0xbd0 [ 194.341906][ T5054] ? bch2_fs_get_tree+0x13e8/0x22d0 [ 194.347286][ T5054] ? vfs_get_tree+0xa7/0x570 [ 194.352088][ T5054] ? do_new_mount+0x71f/0x15e0 [ 194.357061][ T5054] ? path_mount+0x742/0x1f10 [ 194.361772][ T5054] ? __se_sys_mount+0x722/0x810 [ 194.366752][ T5054] ? __x64_sys_mount+0xe4/0x150 [ 194.371733][ T5054] ? x64_sys_call+0xed5/0x3c10 [ 194.376643][ T5054] ? do_syscall_64+0xcd/0x1e0 [ 194.381493][ T5054] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 194.387812][ T5054] ? kmsan_get_metadata+0x13e/0x1c0 [ 194.393216][ T5054] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 194.399282][ T5054] ? __free_pages_ok+0x5b0/0xc30 [ 194.404450][ T5054] ? kmsan_get_metadata+0x13e/0x1c0 [ 194.409891][ T5054] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 194.415894][ T5054] __msan_warning+0x95/0x120 [ 194.420689][ T5054] bch2_alloc_v4_invalid+0x9b9/0x1760 [ 194.426196][ T5054] ? kmsan_get_metadata+0xf0/0x1c0 [ 194.431467][ T5054] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 194.438008][ T5054] ? __pfx_bch2_alloc_v4_invalid+0x10/0x10 [ 194.443978][ T5054] bch2_bkey_val_invalid+0x2b2/0x410 [ 194.449441][ T5054] bch2_btree_node_read_done+0x5c25/0x7a80 [ 194.455477][ T5054] btree_node_read_work+0x973/0x1960 [ 194.460914][ T5054] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 194.466928][ T5054] bch2_btree_node_read+0x2e6b/0x36e0 [ 194.472462][ T5054] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 194.478441][ T5054] ? __bch2_btree_node_hash_insert+0x13cb/0x16c0 [ 194.484930][ T5054] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 194.490999][ T5054] ? kmsan_get_metadata+0x13e/0x1c0 [ 194.496380][ T5054] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 194.502973][ T5054] bch2_btree_root_read+0xa6c/0x13d0 [ 194.508566][ T5054] read_btree_roots+0x4e6/0xfb0 [ 194.513679][ T5054] bch2_fs_recovery+0x4224/0x5a20 [ 194.518975][ T5054] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 194.525564][ T5054] ? __closure_wake_up+0x16a/0x180 [ 194.530863][ T5054] bch2_fs_start+0x7b2/0xbd0 [ 194.535747][ T5054] bch2_fs_get_tree+0x13e8/0x22d0 [ 194.540982][ T5054] ? __pfx_bch2_fs_get_tree+0x10/0x10 [ 194.546554][ T5054] vfs_get_tree+0xa7/0x570 [ 194.551112][ T5054] ? mount_capable+0x97/0x120 [ 194.556026][ T5054] do_new_mount+0x71f/0x15e0 [ 194.560767][ T5054] ? kmsan_get_metadata+0x13e/0x1c0 [ 194.566172][ T5054] path_mount+0x742/0x1f10 [ 194.570789][ T5054] ? user_path_at+0x32f/0x390 [ 194.575585][ T5054] __se_sys_mount+0x722/0x810 [ 194.580420][ T5054] __x64_sys_mount+0xe4/0x150 [ 194.585235][ T5054] x64_sys_call+0xed5/0x3c10 [ 194.589978][ T5054] do_syscall_64+0xcd/0x1e0 [ 194.594632][ T5054] ? clear_bhb_loop+0x25/0x80 [ 194.599514][ T5054] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 194.605658][ T5054] RIP: 0033:0x7faec7f09e2a [ 194.610182][ T5054] 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 [ 194.629961][ T5054] RSP: 002b:00007ffcb3776858 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 194.638524][ T5054] RAX: ffffffffffffffda RBX: 00007ffcb3776870 RCX: 00007faec7f09e2a [ 194.646641][ T5054] RDX: 0000000020000180 RSI: 0000000020000080 RDI: 00007ffcb3776870 [ 194.654737][ T5054] RBP: 0000000000000004 R08: 00007ffcb37768b0 R09: 0000000000005b3c [ 194.662839][ T5054] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 [ 194.670934][ T5054] R13: 00007ffcb37768b0 R14: 0000000000000003 R15: 0000000001000000 [ 194.679133][ T5054] [ 194.682606][ T5054] Kernel Offset: disabled [ 194.687055][ T5054] Rebooting in 86400 seconds..