./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1526143540 <...> Warning: Permanently added '10.128.0.4' (ED25519) to the list of known hosts. execve("./syz-executor1526143540", ["./syz-executor1526143540"], 0x7ffeea8beac0 /* 10 vars */) = 0 brk(NULL) = 0x55558cdff000 brk(0x55558cdffe00) = 0x55558cdffe00 arch_prctl(ARCH_SET_FS, 0x55558cdff480) = 0 set_tid_address(0x55558cdff750) = 5776 set_robust_list(0x55558cdff760, 24) = 0 rseq(0x55558cdffda0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1526143540", 4096) = 28 getrandom("\xd1\x58\x5c\x97\x9c\xe4\x89\x61", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558cdffe00 brk(0x55558ce20e00) = 0x55558ce20e00 brk(0x55558ce21000) = 0x55558ce21000 mprotect(0x7f2dd3d83000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f2dd3cd4a50, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f2dd3cdcfc0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f2dd3cd4a50, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f2dd3cdcfc0}, NULL, 8) = 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, child_tidptr=0x55558cdff750) = 5777 ./strace-static-x86_64: Process 5777 attached [pid 5777] set_robust_list(0x55558cdff760, 24) = 0 executing program [pid 5777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5777] setpgid(0, 0) = 0 [pid 5777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5777] write(3, "1000", 4) = 4 [pid 5777] close(3) = 0 [pid 5777] write(1, "executing program\n", 18) = 18 [pid 5777] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5777] pwrite64(-1, NULL, 0, 3708) = -1 EBADF (Bad file descriptor) [pid 5777] memfd_create("syzkaller", 0) = 3 [pid 5777] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2dcb800000 [pid 5777] 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 5777] munmap(0x7f2dcb800000, 138412032) = 0 [pid 5777] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5777] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5777] close(3) = 0 [pid 5777] close(4) = 0 [pid 5777] mkdir("./file2", 0777) = 0 [ 215.642929][ T5777] loop0: detected capacity change from 0 to 32768 [ 215.790426][ T5777] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,metadata_checksum=none,data_checksum=none,compression=lz4,nojournal_transaction_names [ 215.807529][ T5777] bcachefs (loop0): initializing new filesystem [ 215.819898][ T5777] bcachefs (loop0): going read-write [ 215.829911][ T5777] bcachefs (loop0): marking superblocks [ 215.865895][ T5777] ===================================================== [ 215.873307][ T5777] BUG: KMSAN: uninit-value in rw_aux_tree_set+0x4d2/0x580 [ 215.880765][ T5777] rw_aux_tree_set+0x4d2/0x580 [ 215.885731][ T5777] rw_aux_tree_insert_entry+0x6c3/0x970 [ 215.891749][ T5777] bch2_bset_fix_lookup_table+0xecc/0x13e0 [ 215.897767][ T5777] bch2_bset_insert+0x1621/0x19f0 [ 215.903091][ T5777] bch2_btree_bset_insert_key+0xf4e/0x2b60 [ 215.909308][ T5777] bch2_btree_insert_key_leaf+0x276/0x1050 [ 215.915502][ T5777] __bch2_trans_commit+0xbbb3/0xd310 [ 215.921257][ T5777] bch2_trans_mark_metadata_bucket+0x63b/0x1eb0 [ 215.927756][ T5777] bch2_trans_mark_dev_sb+0x858/0x10e0 [ 215.933586][ T5777] bch2_trans_mark_dev_sbs_flags+0x3e5/0x9f0 [ 215.939903][ T5777] bch2_trans_mark_dev_sbs+0x32/0x40 [ 215.945358][ T5777] bch2_fs_initialize+0x19cd/0x2f90 [ 215.950883][ T5777] bch2_fs_start+0x792/0xc20 [ 215.955676][ T5777] bch2_fs_get_tree+0x143a/0x2330 [ 215.960998][ T5777] vfs_get_tree+0xb1/0x5a0 [ 215.965619][ T5777] do_new_mount+0x71f/0x15e0 [ 215.971187][ T5777] path_mount+0x742/0x1f10 [ 215.975820][ T5777] __se_sys_mount+0x71f/0x800 [ 215.980876][ T5777] __x64_sys_mount+0xe4/0x150 [ 215.985779][ T5777] x64_sys_call+0x39bf/0x3c30 [ 215.990806][ T5777] do_syscall_64+0xcd/0x1e0 [ 215.995581][ T5777] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 216.001882][ T5777] [ 216.004314][ T5777] Uninit was created at: [ 216.008928][ T5777] ___kmalloc_large_node+0x22c/0x370 [ 216.014520][ T5777] __kmalloc_large_node_noprof+0x3f/0x1e0 [ 216.020545][ T5777] __kmalloc_node_noprof+0xc96/0x1250 [ 216.026149][ T5777] __kvmalloc_node_noprof+0xc0/0x2d0 [ 216.031906][ T5777] __bch2_btree_node_mem_alloc+0x2be/0xa80 [ 216.037983][ T5777] bch2_fs_btree_cache_init+0x4f0/0xb60 [ 216.043958][ T5777] bch2_fs_open+0x4b24/0x59c0 [ 216.048965][ T5777] bch2_fs_get_tree+0x986/0x2330 [ 216.054084][ T5777] vfs_get_tree+0xb1/0x5a0 [ 216.058893][ T5777] do_new_mount+0x71f/0x15e0 [ 216.063738][ T5777] path_mount+0x742/0x1f10 [ 216.068304][ T5777] __se_sys_mount+0x71f/0x800 [ 216.073420][ T5777] __x64_sys_mount+0xe4/0x150 [ 216.078280][ T5777] x64_sys_call+0x39bf/0x3c30 [ 216.083322][ T5777] do_syscall_64+0xcd/0x1e0 [ 216.087996][ T5777] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 216.094354][ T5777] [ 216.096806][ T5777] CPU: 1 UID: 0 PID: 5777 Comm: syz-executor152 Not tainted 6.13.0-syzkaller-07644-gc2da8b3f914f #0 [ 216.108090][ T5777] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 216.118549][ T5777] ===================================================== [ 216.125603][ T5777] Disabling lock debugging due to kernel taint [ 216.132046][ T5777] Kernel panic - not syncing: kmsan.panic set ... [ 216.138632][ T5777] CPU: 1 UID: 0 PID: 5777 Comm: syz-executor152 Tainted: G B 6.13.0-syzkaller-07644-gc2da8b3f914f #0 [ 216.151058][ T5777] Tainted: [B]=BAD_PAGE [ 216.155327][ T5777] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 216.165526][ T5777] Call Trace: [ 216.168916][ T5777] [ 216.171981][ T5777] dump_stack_lvl+0x216/0x2d0 [ 216.176805][ T5777] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.182832][ T5777] dump_stack+0x1e/0x24 [ 216.187181][ T5777] panic+0x4e2/0xcf0 [ 216.191248][ T5777] ? kmsan_get_metadata+0x51/0x1c0 [ 216.196545][ T5777] kmsan_report+0x2c7/0x2d0 [ 216.201204][ T5777] ? _raw_spin_unlock_irqrestore+0x3f/0x60 [ 216.207164][ T5777] ? __msan_warning+0x95/0x120 [ 216.212087][ T5777] ? rw_aux_tree_set+0x4d2/0x580 [ 216.217184][ T5777] ? rw_aux_tree_insert_entry+0x6c3/0x970 [ 216.223119][ T5777] ? bch2_bset_fix_lookup_table+0xecc/0x13e0 [ 216.229303][ T5777] ? bch2_bset_insert+0x1621/0x19f0 [ 216.234694][ T5777] ? bch2_btree_bset_insert_key+0xf4e/0x2b60 [ 216.240865][ T5777] ? bch2_btree_insert_key_leaf+0x276/0x1050 [ 216.247097][ T5777] ? __bch2_trans_commit+0xbbb3/0xd310 [ 216.252741][ T5777] ? bch2_trans_mark_metadata_bucket+0x63b/0x1eb0 [ 216.259511][ T5777] ? bch2_trans_mark_dev_sb+0x858/0x10e0 [ 216.265305][ T5777] ? bch2_trans_mark_dev_sbs_flags+0x3e5/0x9f0 [ 216.271728][ T5777] ? bch2_trans_mark_dev_sbs+0x32/0x40 [ 216.277343][ T5777] ? bch2_fs_initialize+0x19cd/0x2f90 [ 216.282871][ T5777] ? bch2_fs_start+0x792/0xc20 [ 216.287807][ T5777] ? bch2_fs_get_tree+0x143a/0x2330 [ 216.293227][ T5777] ? vfs_get_tree+0xb1/0x5a0 [ 216.297972][ T5777] ? do_new_mount+0x71f/0x15e0 [ 216.302884][ T5777] ? path_mount+0x742/0x1f10 [ 216.307625][ T5777] ? __se_sys_mount+0x71f/0x800 [ 216.312652][ T5777] ? __x64_sys_mount+0xe4/0x150 [ 216.317660][ T5777] ? x64_sys_call+0x39bf/0x3c30 [ 216.322674][ T5777] ? do_syscall_64+0xcd/0x1e0 [ 216.327660][ T5777] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 216.333937][ T5777] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.340026][ T5777] ? rw_aux_tree_set+0x3f/0x580 [ 216.345043][ T5777] ? filter_irq_stacks+0x60/0x1a0 [ 216.350346][ T5777] ? stack_depot_save_flags+0x2c/0x750 [ 216.355989][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.361361][ T5777] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 216.367860][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.373262][ T5777] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.379251][ T5777] __msan_warning+0x95/0x120 [ 216.383999][ T5777] rw_aux_tree_set+0x4d2/0x580 [ 216.388938][ T5777] ? bset_aux_tree_verify+0x44d/0x4a0 [ 216.394496][ T5777] rw_aux_tree_insert_entry+0x6c3/0x970 [ 216.400217][ T5777] bch2_bset_fix_lookup_table+0xecc/0x13e0 [ 216.406196][ T5777] ? bch2_bkey_pack_key+0x1745/0x1860 [ 216.411755][ T5777] bch2_bset_insert+0x1621/0x19f0 [ 216.417051][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.422446][ T5777] bch2_btree_bset_insert_key+0xf4e/0x2b60 [ 216.428459][ T5777] ? __msan_memcpy+0x108/0x1c0 [ 216.433409][ T5777] bch2_btree_insert_key_leaf+0x276/0x1050 [ 216.439445][ T5777] __bch2_trans_commit+0xbbb3/0xd310 [ 216.445096][ T5777] bch2_trans_mark_metadata_bucket+0x63b/0x1eb0 [ 216.451550][ T5777] ? bch2_trans_start_alloc_update_noupdate+0x179/0x12f0 [ 216.458907][ T5777] bch2_trans_mark_dev_sb+0x858/0x10e0 [ 216.464611][ T5777] bch2_trans_mark_dev_sbs_flags+0x3e5/0x9f0 [ 216.470778][ T5777] bch2_trans_mark_dev_sbs+0x32/0x40 [ 216.476290][ T5777] bch2_fs_initialize+0x19cd/0x2f90 [ 216.481668][ T5777] ? kmsan_internal_poison_memory+0x7d/0x90 [ 216.487725][ T5777] ? kmsan_internal_poison_memory+0x49/0x90 [ 216.493779][ T5777] ? kmsan_slab_free+0xd0/0x140 [ 216.498791][ T5777] ? kfree+0x240/0xdb0 [ 216.502990][ T5777] ? bch2_printbuf_exit+0x9b/0xd0 [ 216.508177][ T5777] ? print_mount_opts+0x4ca/0x4f0 [ 216.513353][ T5777] ? bch2_fs_start+0x55/0xc20 [ 216.518167][ T5777] ? bch2_fs_get_tree+0x143a/0x2330 [ 216.523520][ T5777] ? vfs_get_tree+0xb1/0x5a0 [ 216.528278][ T5777] ? do_new_mount+0x71f/0x15e0 [ 216.533255][ T5777] ? path_mount+0x742/0x1f10 [ 216.538055][ T5777] ? __se_sys_mount+0x71f/0x800 [ 216.543147][ T5777] ? __x64_sys_mount+0xe4/0x150 [ 216.548185][ T5777] ? x64_sys_call+0x39bf/0x3c30 [ 216.553193][ T5777] ? do_syscall_64+0xcd/0x1e0 [ 216.558026][ T5777] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 216.564264][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.569634][ T5777] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.575632][ T5777] ? kfree+0x1a7/0xdb0 [ 216.579862][ T5777] ? filter_irq_stacks+0x60/0x1a0 [ 216.585182][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.590600][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.596071][ T5777] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.602085][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.607547][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.612942][ T5777] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 216.618955][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.624331][ T5777] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 216.630827][ T5777] ? llist_reverse_order+0x102/0x130 [ 216.636285][ T5777] ? kmsan_internal_unpoison_memory+0x14/0x20 [ 216.642579][ T5777] bch2_fs_start+0x792/0xc20 [ 216.647332][ T5777] bch2_fs_get_tree+0x143a/0x2330 [ 216.652576][ T5777] vfs_get_tree+0xb1/0x5a0 [ 216.657145][ T5777] ? mount_capable+0x97/0x120 [ 216.661978][ T5777] do_new_mount+0x71f/0x15e0 [ 216.666789][ T5777] ? kmsan_get_metadata+0x13e/0x1c0 [ 216.672247][ T5777] path_mount+0x742/0x1f10 [ 216.676924][ T5777] ? user_path_at+0x374/0x3e0 [ 216.681838][ T5777] __se_sys_mount+0x71f/0x800 [ 216.686699][ T5777] __x64_sys_mount+0xe4/0x150 [ 216.691570][ T5777] x64_sys_call+0x39bf/0x3c30 [ 216.696424][ T5777] do_syscall_64+0xcd/0x1e0 [ 216.701164][ T5777] ? clear_bhb_loop+0x25/0x80 [ 216.706002][ T5777] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 216.712071][ T5777] RIP: 0033:0x7f2dd3d0b66a [ 216.716595][ T5777] 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 [ 216.736383][ T5777] RSP: 002b:00007ffd0fb40f08 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 [ 216.744968][ T5777] RAX: ffffffffffffffda RBX: 00007ffd0fb40f20 RCX: 00007f2dd3d0b66a [ 216.753058][ T5777] RDX: 0000000020000140 RSI: 0000000020000200 RDI: 00007ffd0fb40f20 [ 216.761165][ T5777] RBP: 0000000000000004 R08: 00007ffd0fb40f60 R09: 0035313631353539 [ 216.769261][ T5777] R10: 0000000000000008 R11: 0000000000000282 R12: 0000000000000008 [ 216.777365][ T5777] R13: 00007ffd0fb40f60 R14: 0000000000000003 R15: 0000000001000000 [ 216.785547][ T5777] [ 216.789062][ T5777] Kernel Offset: disabled [ 216.793487][ T5777] Rebooting in 86400 seconds..