./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2133640302 <...> Warning: Permanently added '10.128.1.43' (ED25519) to the list of known hosts. execve("./syz-executor2133640302", ["./syz-executor2133640302"], 0x7ffe0b333630 /* 10 vars */) = 0 brk(NULL) = 0x55557bf2f000 brk(0x55557bf2fd00) = 0x55557bf2fd00 arch_prctl(ARCH_SET_FS, 0x55557bf2f380) = 0 set_tid_address(0x55557bf2f650) = 5777 set_robust_list(0x55557bf2f660, 24) = 0 rseq(0x55557bf2fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2133640302", 4096) = 28 getrandom("\xc2\xf8\xc7\xfe\xf8\x47\x20\x67", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557bf2fd00 brk(0x55557bf50d00) = 0x55557bf50d00 brk(0x55557bf51000) = 0x55557bf51000 mprotect(0x7fecd5c15000, 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=0x55557bf2f650) = 5778 ./strace-static-x86_64: Process 5778 attached [pid 5778] set_robust_list(0x55557bf2f660, 24) = 0 [pid 5778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5778] setpgid(0, 0) = 0 [pid 5778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5778] write(3, "1000", 4) = 4 [pid 5778] close(3executing program ) = 0 [pid 5778] write(1, "executing program\n", 18) = 18 [pid 5778] prlimit64(0, RLIMIT_RTPRIO, {rlim_cur=8, rlim_max=139}, NULL) = 0 [pid 5778] sched_setscheduler(0, SCHED_FIFO, [7]) = 0 [pid 5778] memfd_create("syzkaller", 0) = 3 [pid 5778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7feccd600000 [pid 5778] 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 5778] munmap(0x7feccd600000, 138412032) = 0 [pid 5778] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5778] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5778] close(3) = 0 [pid 5778] close(4) = 0 [pid 5778] mkdir("./file1", 0777) = 0 [ 216.167586][ T5778] loop0: detected capacity change from 0 to 32768 [ 216.331477][ T5778] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names [ 216.348547][ T5778] bcachefs (loop0): initializing new filesystem [ 216.361181][ T5778] bcachefs (loop0): going read-write [ 216.369397][ T5778] bcachefs (loop0): marking superblocks [ 216.421243][ T5778] bcachefs (loop0): initializing freespace [ 216.427450][ T5778] ===================================================== [ 216.434611][ T5778] BUG: KMSAN: uninit-value in bch2_dev_freespace_init+0x1044/0x1eb0 [ 216.442888][ T5778] bch2_dev_freespace_init+0x1044/0x1eb0 [ 216.448876][ T5778] bch2_fs_freespace_init+0x599/0xb30 [ 216.454463][ T5778] bch2_fs_initialize+0x1a74/0x2f90 [ 216.459927][ T5778] bch2_fs_start+0x792/0xc20 [ 216.464753][ T5778] bch2_fs_get_tree+0x143a/0x2330 [ 216.470157][ T5778] vfs_get_tree+0xb1/0x5a0 [ 216.474761][ T5778] do_new_mount+0x71f/0x15e0 [ 216.479590][ T5778] path_mount+0x742/0x1f10 [ 216.484202][ T5778] __se_sys_mount+0x71f/0x800 [ 216.489149][ T5778] __x64_sys_mount+0xe4/0x150 [ 216.494024][ T5778] x64_sys_call+0x39bf/0x3c30 [ 216.498939][ T5778] do_syscall_64+0xcd/0x1e0 [ 216.503641][ T5778] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 216.509801][ T5778] [ 216.512245][ T5778] Uninit was created at: [ 216.516878][ T5778] ___kmalloc_large_node+0x22c/0x370 [ 216.522411][ T5778] __kmalloc_large_node_noprof+0x3f/0x1e0 [ 216.528472][ T5778] __kmalloc_node_noprof+0xc96/0x1250 [ 216.534110][ T5778] __kvmalloc_node_noprof+0xc0/0x2d0 [ 216.539662][ T5778] __bch2_btree_node_mem_alloc+0x2be/0xa80 [ 216.545816][ T5778] bch2_fs_btree_cache_init+0x4f0/0xb60 [ 216.551609][ T5778] bch2_fs_open+0x4b24/0x59c0 [ 216.556538][ T5778] bch2_fs_get_tree+0x986/0x2330 [ 216.561691][ T5778] vfs_get_tree+0xb1/0x5a0 [ 216.566364][ T5778] do_new_mount+0x71f/0x15e0 [ 216.571173][ T5778] path_mount+0x742/0x1f10 [ 216.576052][ T5778] __se_sys_mount+0x71f/0x800 [ 216.580923][ T5778] __x64_sys_mount+0xe4/0x150 [ 216.585908][ T5778] x64_sys_call+0x39bf/0x3c30 [ 216.590779][ T5778] do_syscall_64+0xcd/0x1e0 [ 216.595427][ T5778] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 216.601672][ T5778] [ 216.604092][ T5778] CPU: 1 UID: 0 PID: 5778 Comm: syz-executor213 Not tainted 6.14.0-rc1-syzkaller #0 [ 216.613716][ T5778] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 216.623997][ T5778] ===================================================== [ 216.631118][ T5778] Disabling lock debugging due to kernel taint [ 216.637455][ T5778] Kernel panic - not syncing: kmsan.panic set ... [ 216.643988][ T5778] CPU: 1 UID: 0 PID: 5778 Comm: syz-executor213 Tainted: G B 6.14.0-rc1-syzkaller #0 [ 216.654995][ T5778] Tainted: [B]=BAD_PAGE [ 216.659226][ T5778] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 216.669398][ T5778] Call Trace: [ 216.672767][ T5778] [ 216.675799][ T5778] dump_stack_lvl+0x216/0x2d0 [ 216.680696][ T5778] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.686719][ T5778] dump_stack+0x1e/0x24 [ 216.690997][ T5778] panic+0x4e2/0xcf0 [ 216.695052][ T5778] ? kmsan_get_metadata+0xb1/0x1c0 [ 216.700352][ T5778] kmsan_report+0x2c7/0x2d0 [ 216.705049][ T5778] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.711032][ T5778] ? __msan_warning+0x95/0x120 [ 216.716005][ T5778] ? bch2_dev_freespace_init+0x1044/0x1eb0 [ 216.722009][ T5778] ? bch2_fs_freespace_init+0x599/0xb30 [ 216.727808][ T5778] ? bch2_fs_initialize+0x1a74/0x2f90 [ 216.733333][ T5778] ? bch2_fs_start+0x792/0xc20 [ 216.738235][ T5778] ? bch2_fs_get_tree+0x143a/0x2330 [ 216.743584][ T5778] ? vfs_get_tree+0xb1/0x5a0 [ 216.748307][ T5778] ? do_new_mount+0x71f/0x15e0 [ 216.753207][ T5778] ? path_mount+0x742/0x1f10 [ 216.757950][ T5778] ? __se_sys_mount+0x71f/0x800 [ 216.763010][ T5778] ? __x64_sys_mount+0xe4/0x150 [ 216.767995][ T5778] ? x64_sys_call+0x39bf/0x3c30 [ 216.772983][ T5778] ? do_syscall_64+0xcd/0x1e0 [ 216.777784][ T5778] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 216.784018][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.789360][ T5778] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 216.795903][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.801343][ T5778] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.807307][ T5778] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 216.813291][ T5778] ? stack_depot_save_flags+0x6db/0x750 [ 216.819007][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.824376][ T5778] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 216.830906][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.836253][ T5778] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.842214][ T5778] __msan_warning+0x95/0x120 [ 216.846952][ T5778] bch2_dev_freespace_init+0x1044/0x1eb0 [ 216.852799][ T5778] ? bch2_dev_freespace_init+0x3d2/0x1eb0 [ 216.858721][ T5778] bch2_fs_freespace_init+0x599/0xb30 [ 216.864283][ T5778] bch2_fs_initialize+0x1a74/0x2f90 [ 216.869648][ T5778] ? kmsan_internal_poison_memory+0x7d/0x90 [ 216.875752][ T5778] ? kmsan_internal_poison_memory+0x49/0x90 [ 216.881891][ T5778] ? kmsan_slab_free+0xd0/0x140 [ 216.886876][ T5778] ? kfree+0x240/0xdb0 [ 216.891096][ T5778] ? bch2_printbuf_exit+0x9b/0xd0 [ 216.896284][ T5778] ? print_mount_opts+0x4ca/0x4f0 [ 216.901449][ T5778] ? bch2_fs_start+0x55/0xc20 [ 216.906262][ T5778] ? bch2_fs_get_tree+0x143a/0x2330 [ 216.911614][ T5778] ? vfs_get_tree+0xb1/0x5a0 [ 216.916339][ T5778] ? do_new_mount+0x71f/0x15e0 [ 216.921271][ T5778] ? path_mount+0x742/0x1f10 [ 216.926058][ T5778] ? __se_sys_mount+0x71f/0x800 [ 216.931067][ T5778] ? __x64_sys_mount+0xe4/0x150 [ 216.936056][ T5778] ? x64_sys_call+0x39bf/0x3c30 [ 216.941042][ T5778] ? do_syscall_64+0xcd/0x1e0 [ 216.945840][ T5778] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 216.952072][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.957418][ T5778] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.963377][ T5778] ? kfree+0x1a7/0xdb0 [ 216.967631][ T5778] ? filter_irq_stacks+0x60/0x1a0 [ 216.972886][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.978254][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.983666][ T5778] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.989626][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.995015][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 217.000359][ T5778] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 217.006319][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 217.011666][ T5778] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 217.018185][ T5778] ? llist_reverse_order+0x102/0x130 [ 217.023617][ T5778] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 217.029904][ T5778] bch2_fs_start+0x792/0xc20 [ 217.034647][ T5778] bch2_fs_get_tree+0x143a/0x2330 [ 217.039873][ T5778] vfs_get_tree+0xb1/0x5a0 [ 217.044419][ T5778] ? mount_capable+0x97/0x120 [ 217.049288][ T5778] do_new_mount+0x71f/0x15e0 [ 217.054107][ T5778] ? kmsan_get_metadata+0x13e/0x1c0 [ 217.059528][ T5778] path_mount+0x742/0x1f10 [ 217.064176][ T5778] ? user_path_at+0x374/0x3e0 [ 217.069028][ T5778] __se_sys_mount+0x71f/0x800 [ 217.073867][ T5778] __x64_sys_mount+0xe4/0x150 [ 217.078705][ T5778] x64_sys_call+0x39bf/0x3c30 [ 217.083548][ T5778] do_syscall_64+0xcd/0x1e0 [ 217.088239][ T5778] ? clear_bhb_loop+0x25/0x80 [ 217.093069][ T5778] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 217.099143][ T5778] RIP: 0033:0x7fecd5b9de2a [ 217.103681][ T5778] 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 [ 217.123466][ T5778] RSP: 002b:00007fff845d2758 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 217.132064][ T5778] RAX: ffffffffffffffda RBX: 00007fff845d2770 RCX: 00007fecd5b9de2a [ 217.140153][ T5778] RDX: 00000000200000c0 RSI: 0000000020000180 RDI: 00007fff845d2770 [ 217.148241][ T5778] RBP: 0000000000000004 R08: 00007fff845d27b0 R09: 00000000000059ff [ 217.156330][ T5778] R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 [ 217.164431][ T5778] R13: 00007fff845d27b0 R14: 0000000000000003 R15: 0000000001000000 [ 217.172578][ T5778] [ 217.176139][ T5778] Kernel Offset: disabled [ 217.180550][ T5778] Rebooting in 86400 seconds..