./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor183742642 <...> Warning: Permanently added '10.128.0.193' (ED25519) to the list of known hosts. execve("./syz-executor183742642", ["./syz-executor183742642"], 0x7ffd662fb5e0 /* 10 vars */) = 0 brk(NULL) = 0x5555908a0000 brk(0x5555908a0d00) = 0x5555908a0d00 arch_prctl(ARCH_SET_FS, 0x5555908a0380) = 0 set_tid_address(0x5555908a0650) = 5051 set_robust_list(0x5555908a0660, 24) = 0 rseq(0x5555908a0ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor183742642", 4096) = 27 getrandom("\x00\xe7\x6d\xf8\xff\xc7\x3f\x4f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555908a0d00 brk(0x5555908c1d00) = 0x5555908c1d00 brk(0x5555908c2000) = 0x5555908c2000 mprotect(0x7fc7ff7d7000, 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=0x5555908a0650) = 5052 ./strace-static-x86_64: Process 5052 attached [pid 5052] set_robust_list(0x5555908a0660, 24) = 0 [pid 5052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5052] setpgid(0, 0) = 0 [pid 5052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1000", 4) = 4 executing program [pid 5052] close(3) = 0 [pid 5052] write(1, "executing program\n", 18) = 18 [pid 5052] prlimit64(0, RLIMIT_RTPRIO, {rlim_cur=8, rlim_max=139}, NULL) = 0 [pid 5052] sched_setscheduler(0, SCHED_FIFO, [7]) = 0 [pid 5052] memfd_create("syzkaller", 0) = 3 [pid 5052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc7f7200000 [pid 5052] 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 5052] munmap(0x7fc7f7200000, 138412032) = 0 [pid 5052] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5052] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5052] close(3) = 0 [pid 5052] close(4) = 0 [pid 5052] mkdir("./file0", 0777) = 0 [ 158.071526][ T5052] loop0: detected capacity change from 0 to 32768 [ 158.191831][ T5052] bcachefs (loop0): mounting version 1.7: mi_btree_bitmap opts=data_checksum=crc64,str_hash=crc64,nojournal_transaction_names,nocow [ 158.206284][ T5052] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 158.309194][ T5052] bcachefs (loop0): alloc_read... done [ 158.314987][ T5052] bcachefs (loop0): stripes_read... done [ 158.321154][ T5052] bcachefs (loop0): snapshots_read... done [ 158.337817][ T5052] bcachefs (loop0): journal_replay... done [ 158.344016][ T5052] bcachefs (loop0): resume_logged_ops... done [ 158.350650][ T5052] bcachefs (loop0): going read-write [pid 5052] mount("/dev/loop0", "./file0", "bcachefs", 0, "str_hash=crc64,data_checksum=crc64,metadata_checksum=crc32c,nocow,") = 0 [pid 5052] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5052] chdir("./file0") = 0 [pid 5052] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5052] ioctl(4, LOOP_CLR_FD) = 0 [pid 5052] close(4) = 0 [pid 5052] semctl(0, 0, SEM_STAT_ANY, NULL) = -1 EINVAL (Invalid argument) [ 158.364164][ T5052] bcachefs (loop0): done starting filesystem [pid 5052] mkdir("./control", 000) = 0 [ 158.406791][ T5061] ===================================================== [ 158.413990][ T5061] BUG: KMSAN: uninit-value in bch2_dirent_invalid+0x1ea/0xa30 [ 158.422087][ T5061] bch2_dirent_invalid+0x1ea/0xa30 [ 158.428430][ T5061] bch2_bkey_val_invalid+0x24f/0x380 [ 158.434799][ T5061] validate_bset_keys+0x12d8/0x25d0 [ 158.440362][ T5061] validate_bset_for_write+0x1dd/0x340 [ 158.446130][ T5061] __bch2_btree_node_write+0x4777/0x67c0 [ 158.451983][ T5061] bch2_btree_node_write+0xa5/0x2e0 [ 158.457799][ T5061] __btree_node_flush+0x4d0/0x640 [ 158.463011][ T5061] bch2_btree_node_flush0+0x35/0x60 [ 158.468520][ T5061] journal_flush_pins+0xce6/0x1780 [ 158.473823][ T5061] __bch2_journal_reclaim+0xd88/0x1610 [ 158.479573][ T5061] bch2_journal_reclaim_thread+0x18e/0x760 [ 158.485582][ T5061] kthread+0x3e2/0x540 [ 158.489978][ T5061] ret_from_fork+0x6d/0x90 [ 158.494587][ T5061] ret_from_fork_asm+0x1a/0x30 [ 158.499676][ T5061] [ 158.502102][ T5061] Uninit was stored to memory at: [ 158.507483][ T5061] bch2_sort_keys+0x1b4d/0x2cb0 [ 158.512542][ T5061] __bch2_btree_node_write+0x3acd/0x67c0 [ 158.518475][ T5061] bch2_btree_node_write+0xa5/0x2e0 [ 158.523859][ T5061] __btree_node_flush+0x4d0/0x640 [ 158.529158][ T5061] bch2_btree_node_flush0+0x35/0x60 [ 158.534532][ T5061] journal_flush_pins+0xce6/0x1780 [ 158.539901][ T5061] __bch2_journal_reclaim+0xd88/0x1610 [ 158.545537][ T5061] bch2_journal_reclaim_thread+0x18e/0x760 [ 158.551673][ T5061] kthread+0x3e2/0x540 [ 158.556045][ T5061] ret_from_fork+0x6d/0x90 [ 158.560664][ T5061] ret_from_fork_asm+0x1a/0x30 [ 158.565633][ T5061] [ 158.568184][ T5061] Uninit was created at: [ 158.572609][ T5061] __kmalloc_large_node+0x231/0x370 [ 158.578022][ T5061] __kmalloc_node+0xb10/0x10c0 [ 158.582941][ T5061] kvmalloc_node+0xc0/0x2d0 [ 158.587750][ T5061] bch2_btree_node_read_done+0x4e68/0x75e0 [ 158.593771][ T5061] btree_node_read_work+0x8a5/0x1eb0 [ 158.599446][ T5061] bch2_btree_node_read+0x3d42/0x4b50 [ 158.605025][ T5061] bch2_btree_root_read+0xa6c/0x13d0 [ 158.610767][ T5061] read_btree_roots+0x454/0xee0 [ 158.615787][ T5061] bch2_fs_recovery+0x7b6a/0x93e0 [ 158.621064][ T5061] bch2_fs_start+0x7b2/0xbd0 [ 158.625845][ T5061] bch2_fs_open+0x152a/0x15f0 [ 158.630813][ T5061] bch2_mount+0x90d/0x1d90 [ 158.635368][ T5061] legacy_get_tree+0x114/0x290 [ 158.640373][ T5061] vfs_get_tree+0xa7/0x570 [ 158.645018][ T5061] do_new_mount+0x71f/0x15e0 [ 158.649939][ T5061] path_mount+0x742/0x1f20 [ 158.654557][ T5061] __se_sys_mount+0x725/0x810 [ 158.659578][ T5061] __x64_sys_mount+0xe4/0x150 [ 158.664454][ T5061] x64_sys_call+0x2bf4/0x3b50 [ 158.669492][ T5061] do_syscall_64+0xcf/0x1e0 [ 158.674224][ T5061] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 158.680587][ T5061] [ 158.683004][ T5061] CPU: 0 PID: 5061 Comm: bch-reclaim/loo Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 158.693404][ T5061] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 158.703644][ T5061] ===================================================== [ 158.710728][ T5061] Disabling lock debugging due to kernel taint [ 158.717063][ T5061] Kernel panic - not syncing: kmsan.panic set ... [ 158.723602][ T5061] CPU: 0 PID: 5061 Comm: bch-reclaim/loo Tainted: G B 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 158.735335][ T5061] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 158.745555][ T5061] Call Trace: [ 158.748920][ T5061] [ 158.751942][ T5061] dump_stack_lvl+0x216/0x2d0 [ 158.756748][ T5061] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 158.762701][ T5061] dump_stack+0x1e/0x30 [ 158.767070][ T5061] panic+0x4e2/0xcd0 [ 158.771222][ T5061] ? kmsan_get_metadata+0xf1/0x1d0 [ 158.776644][ T5061] kmsan_report+0x2d5/0x2e0 [ 158.781349][ T5061] ? kmsan_get_metadata+0x146/0x1d0 [ 158.786717][ T5061] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 158.792673][ T5061] ? __msan_warning+0x95/0x120 [ 158.797627][ T5061] ? bch2_dirent_invalid+0x1ea/0xa30 [ 158.803081][ T5061] ? bch2_bkey_val_invalid+0x24f/0x380 [ 158.808699][ T5061] ? validate_bset_keys+0x12d8/0x25d0 [ 158.814272][ T5061] ? validate_bset_for_write+0x1dd/0x340 [ 158.820062][ T5061] ? __bch2_btree_node_write+0x4777/0x67c0 [ 158.826096][ T5061] ? bch2_btree_node_write+0xa5/0x2e0 [ 158.831686][ T5061] ? __btree_node_flush+0x4d0/0x640 [ 158.837052][ T5061] ? bch2_btree_node_flush0+0x35/0x60 [ 158.842557][ T5061] ? journal_flush_pins+0xce6/0x1780 [ 158.848040][ T5061] ? __bch2_journal_reclaim+0xd88/0x1610 [ 158.853864][ T5061] ? bch2_journal_reclaim_thread+0x18e/0x760 [ 158.860021][ T5061] ? kthread+0x3e2/0x540 [ 158.864380][ T5061] ? ret_from_fork+0x6d/0x90 [ 158.869074][ T5061] ? ret_from_fork_asm+0x1a/0x30 [ 158.874159][ T5061] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 158.880174][ T5061] ? kmsan_get_metadata+0x146/0x1d0 [ 158.885502][ T5061] ? kmsan_get_metadata+0x146/0x1d0 [ 158.890896][ T5061] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 158.896895][ T5061] ? kmsan_get_metadata+0x146/0x1d0 [ 158.902286][ T5061] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 158.908298][ T5061] ? bch2_bkey_ptrs_invalid+0x250d/0x2d40 [ 158.914240][ T5061] ? kmsan_get_metadata+0x146/0x1d0 [ 158.919548][ T5061] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 158.925519][ T5061] __msan_warning+0x95/0x120 [ 158.930213][ T5061] bch2_dirent_invalid+0x1ea/0xa30 [ 158.935459][ T5061] ? kmsan_get_metadata+0x146/0x1d0 [ 158.940860][ T5061] ? __pfx_bch2_dirent_invalid+0x10/0x10 [ 158.946660][ T5061] bch2_bkey_val_invalid+0x24f/0x380 [ 158.952123][ T5061] validate_bset_keys+0x12d8/0x25d0 [ 158.957560][ T5061] validate_bset_for_write+0x1dd/0x340 [ 158.963204][ T5061] __bch2_btree_node_write+0x4777/0x67c0 [ 158.969077][ T5061] ? kmsan_get_metadata+0x146/0x1d0 [ 158.974473][ T5061] bch2_btree_node_write+0xa5/0x2e0 [ 158.979844][ T5061] __btree_node_flush+0x4d0/0x640 [ 158.985074][ T5061] ? __btree_node_flush+0xd1/0x640 [ 158.990393][ T5061] ? __pfx_bch2_btree_node_flush0+0x10/0x10 [ 158.996461][ T5061] bch2_btree_node_flush0+0x35/0x60 [ 159.001840][ T5061] journal_flush_pins+0xce6/0x1780 [ 159.007136][ T5061] __bch2_journal_reclaim+0xd88/0x1610 [ 159.012780][ T5061] ? kmsan_get_metadata+0x146/0x1d0 [ 159.018114][ T5061] bch2_journal_reclaim_thread+0x18e/0x760 [ 159.024073][ T5061] kthread+0x3e2/0x540 [ 159.028285][ T5061] ? __pfx_bch2_journal_reclaim_thread+0x10/0x10 [ 159.034835][ T5061] ? __pfx_kthread+0x10/0x10 [ 159.039629][ T5061] ret_from_fork+0x6d/0x90 [ 159.044225][ T5061] ? __pfx_kthread+0x10/0x10 [ 159.048968][ T5061] ret_from_fork_asm+0x1a/0x30 [ 159.053899][ T5061] [ 159.057170][ T5061] Kernel Offset: disabled [ 159.061553][ T5061] Rebooting in 86400 seconds..