./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor886151259 <...> Warning: Permanently added '10.128.0.199' (ED25519) to the list of known hosts. execve("./syz-executor886151259", ["./syz-executor886151259"], 0x7ffebd725460 /* 10 vars */) = 0 brk(NULL) = 0x55555b13a000 brk(0x55555b13ad00) = 0x55555b13ad00 arch_prctl(ARCH_SET_FS, 0x55555b13a380) = 0 set_tid_address(0x55555b13a650) = 5049 set_robust_list(0x55555b13a660, 24) = 0 rseq(0x55555b13aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor886151259", 4096) = 27 getrandom("\x75\x79\xd5\x1d\x9d\xf0\x80\x62", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555b13ad00 brk(0x55555b15bd00) = 0x55555b15bd00 brk(0x55555b15c000) = 0x55555b15c000 mprotect(0x7f052a6ab000, 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./strace-static-x86_64: Process 5050 attached , child_tidptr=0x55555b13a650) = 5050 [pid 5050] set_robust_list(0x55555b13a660, 24) = 0 [pid 5050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5050] setpgid(0, 0) = 0 [pid 5050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5050] write(3, "1000", 4) = 4 [pid 5050] close(3) = 0 executing program [pid 5050] write(1, "executing program\n", 18) = 18 [pid 5050] prlimit64(0, RLIMIT_RTPRIO, {rlim_cur=8, rlim_max=139}, NULL) = 0 [pid 5050] sched_setscheduler(0, SCHED_FIFO, [7]) = 0 [pid 5050] memfd_create("syzkaller", 0) = 3 [pid 5050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0522000000 [pid 5050] 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 5050] munmap(0x7f0522000000, 138412032) = 0 [pid 5050] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5050] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5050] close(3) = 0 [pid 5050] close(4) = 0 [pid 5050] mkdir("./file0", 0777) = 0 [ 184.209933][ T5050] loop0: detected capacity change from 0 to 32768 [ 184.347180][ T5050] bcachefs (loop0): mounting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,nojournal_transaction_names [ 184.361902][ T5050] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 184.497556][ T5050] bcachefs (loop0): alloc_read... done [ 184.503933][ T5050] bcachefs (loop0): stripes_read... done [ 184.510015][ T5050] bcachefs (loop0): snapshots_read... done [ 184.529176][ T5050] bcachefs (loop0): journal_replay... done [ 184.535707][ T5050] bcachefs (loop0): resume_logged_ops... done [ 184.542499][ T5050] bcachefs (loop0): going read-write [pid 5050] mount("/dev/loop0", "./file0", "bcachefs", 0, "") = 0 [pid 5050] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5050] chdir("./file0") = 0 [pid 5050] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5050] ioctl(4, LOOP_CLR_FD) = 0 [pid 5050] close(4) = 0 [ 184.555564][ T5050] bcachefs (loop0): done starting filesystem [ 184.609600][ T5059] ===================================================== [ 184.617207][ T5059] BUG: KMSAN: uninit-value in bch2_dirent_invalid+0x1ea/0xa30 [ 184.625110][ T5059] bch2_dirent_invalid+0x1ea/0xa30 [ 184.630542][ T5059] bch2_bkey_val_invalid+0x24f/0x380 [ 184.636096][ T5059] validate_bset_keys+0x12d8/0x25d0 [ 184.641758][ T5059] validate_bset_for_write+0x1dd/0x340 [ 184.647518][ T5059] __bch2_btree_node_write+0x4777/0x67c0 [ 184.653719][ T5059] bch2_btree_node_write+0xa5/0x2e0 [pid 5050] creat("./bus", 000) = 4 [ 184.659263][ T5059] __btree_node_flush+0x4d0/0x640 [ 184.664731][ T5059] bch2_btree_node_flush0+0x35/0x60 [ 184.670280][ T5059] journal_flush_pins+0xce6/0x1780 [ 184.676506][ T5059] __bch2_journal_reclaim+0xd88/0x1610 [ 184.682436][ T5059] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.688466][ T5059] kthread+0x3e2/0x540 [ 184.692984][ T5059] ret_from_fork+0x6d/0x90 [ 184.697613][ T5059] ret_from_fork_asm+0x1a/0x30 [ 184.702685][ T5059] [ 184.705132][ T5059] Uninit was stored to memory at: [ 184.710605][ T5059] bch2_sort_keys+0x1b4d/0x2cb0 [ 184.715801][ T5059] __bch2_btree_node_write+0x3acd/0x67c0 [ 184.722231][ T5059] bch2_btree_node_write+0xa5/0x2e0 [ 184.727714][ T5059] __btree_node_flush+0x4d0/0x640 [ 184.733136][ T5059] bch2_btree_node_flush0+0x35/0x60 [ 184.738576][ T5059] journal_flush_pins+0xce6/0x1780 [ 184.744113][ T5059] __bch2_journal_reclaim+0xd88/0x1610 [ 184.749870][ T5059] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.756084][ T5059] kthread+0x3e2/0x540 [ 184.760568][ T5059] ret_from_fork+0x6d/0x90 [ 184.765232][ T5059] ret_from_fork_asm+0x1a/0x30 [ 184.770457][ T5059] [ 184.772906][ T5059] Uninit was created at: [ 184.777387][ T5059] __kmalloc_large_node+0x231/0x370 [ 184.782859][ T5059] __kmalloc_node+0xb10/0x10c0 [ 184.787844][ T5059] kvmalloc_node+0xc0/0x2d0 [ 184.792771][ T5059] bch2_btree_node_read_done+0x4e68/0x75e0 [ 184.798862][ T5059] btree_node_read_work+0x8a5/0x1eb0 [ 184.804702][ T5059] bch2_btree_node_read+0x3d42/0x4b50 [ 184.810458][ T5059] bch2_btree_root_read+0xa6c/0x13d0 [ 184.816044][ T5059] read_btree_roots+0x454/0xee0 [ 184.821176][ T5059] bch2_fs_recovery+0x7b6a/0x93e0 [ 184.826426][ T5059] bch2_fs_start+0x7b2/0xbd0 [ 184.831495][ T5059] bch2_fs_open+0x152a/0x15f0 [ 184.836472][ T5059] bch2_mount+0x90d/0x1d90 [ 184.841302][ T5059] legacy_get_tree+0x114/0x290 [ 184.846321][ T5059] vfs_get_tree+0xa7/0x570 [ 184.851149][ T5059] do_new_mount+0x71f/0x15e0 [ 184.855999][ T5059] path_mount+0x742/0x1f20 [ 184.860739][ T5059] __se_sys_mount+0x725/0x810 [ 184.866026][ T5059] __x64_sys_mount+0xe4/0x150 [ 184.871149][ T5059] x64_sys_call+0x2bf4/0x3b50 [ 184.876073][ T5059] do_syscall_64+0xcf/0x1e0 [ 184.880975][ T5059] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 184.887124][ T5059] [ 184.889538][ T5059] CPU: 0 PID: 5059 Comm: bch-reclaim/loo Not tainted 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 184.900233][ T5059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 184.910613][ T5059] ===================================================== [ 184.917699][ T5059] Disabling lock debugging due to kernel taint [ 184.924192][ T5059] Kernel panic - not syncing: kmsan.panic set ... [ 184.930782][ T5059] CPU: 0 PID: 5059 Comm: bch-reclaim/loo Tainted: G B 6.9.0-syzkaller-02707-g614da38e2f7a #0 [ 184.942711][ T5059] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 184.953275][ T5059] Call Trace: [ 184.956734][ T5059] [ 184.959814][ T5059] dump_stack_lvl+0x216/0x2d0 [ 184.964673][ T5059] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.970677][ T5059] dump_stack+0x1e/0x30 [ 184.975084][ T5059] panic+0x4e2/0xcd0 [ 184.979187][ T5059] ? kmsan_get_metadata+0xf1/0x1d0 [ 184.984532][ T5059] kmsan_report+0x2d5/0x2e0 [ 184.989234][ T5059] ? kmsan_get_metadata+0x146/0x1d0 [ 184.994639][ T5059] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 185.000629][ T5059] ? __msan_warning+0x95/0x120 [ 185.005608][ T5059] ? bch2_dirent_invalid+0x1ea/0xa30 [ 185.011135][ T5059] ? bch2_bkey_val_invalid+0x24f/0x380 [ 185.016902][ T5059] ? validate_bset_keys+0x12d8/0x25d0 [ 185.022530][ T5059] ? validate_bset_for_write+0x1dd/0x340 [ 185.028445][ T5059] ? __bch2_btree_node_write+0x4777/0x67c0 [ 185.034507][ T5059] ? bch2_btree_node_write+0xa5/0x2e0 [ 185.040089][ T5059] ? __btree_node_flush+0x4d0/0x640 [ 185.045511][ T5059] ? bch2_btree_node_flush0+0x35/0x60 [ 185.051169][ T5059] ? journal_flush_pins+0xce6/0x1780 [ 185.056710][ T5059] ? __bch2_journal_reclaim+0xd88/0x1610 [ 185.062579][ T5059] ? bch2_journal_reclaim_thread+0x18e/0x760 [ 185.068743][ T5059] ? kthread+0x3e2/0x540 [ 185.073257][ T5059] ? ret_from_fork+0x6d/0x90 [ 185.078110][ T5059] ? ret_from_fork_asm+0x1a/0x30 [ 185.083323][ T5059] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 185.089396][ T5059] ? kmsan_get_metadata+0x146/0x1d0 [ 185.094898][ T5059] ? kmsan_get_metadata+0x146/0x1d0 [ 185.100478][ T5059] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 185.106542][ T5059] ? kmsan_get_metadata+0x146/0x1d0 [ 185.112009][ T5059] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 185.118064][ T5059] ? bch2_bkey_ptrs_invalid+0x250d/0x2d40 [ 185.124052][ T5059] ? kmsan_get_metadata+0x146/0x1d0 [ 185.129502][ T5059] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 185.135513][ T5059] __msan_warning+0x95/0x120 [ 185.140334][ T5059] bch2_dirent_invalid+0x1ea/0xa30 [ 185.145737][ T5059] ? kmsan_get_metadata+0x146/0x1d0 [ 185.151221][ T5059] ? __pfx_bch2_dirent_invalid+0x10/0x10 [ 185.157213][ T5059] bch2_bkey_val_invalid+0x24f/0x380 [ 185.162895][ T5059] validate_bset_keys+0x12d8/0x25d0 [ 185.168455][ T5059] validate_bset_for_write+0x1dd/0x340 [ 185.174245][ T5059] __bch2_btree_node_write+0x4777/0x67c0 [ 185.180190][ T5059] ? kmsan_get_metadata+0x146/0x1d0 [ 185.185772][ T5059] bch2_btree_node_write+0xa5/0x2e0 [ 185.191272][ T5059] __btree_node_flush+0x4d0/0x640 [ 185.196596][ T5059] ? __btree_node_flush+0xd1/0x640 [ 185.201993][ T5059] ? __pfx_bch2_btree_node_flush0+0x10/0x10 [ 185.208313][ T5059] bch2_btree_node_flush0+0x35/0x60 [ 185.213773][ T5059] journal_flush_pins+0xce6/0x1780 [ 185.219242][ T5059] __bch2_journal_reclaim+0xd88/0x1610 [ 185.225093][ T5059] ? kmsan_get_metadata+0x146/0x1d0 [ 185.230527][ T5059] bch2_journal_reclaim_thread+0x18e/0x760 [ 185.236659][ T5059] kthread+0x3e2/0x540 [ 185.241005][ T5059] ? __pfx_bch2_journal_reclaim_thread+0x10/0x10 [ 185.247587][ T5059] ? __pfx_kthread+0x10/0x10 [ 185.252432][ T5059] ret_from_fork+0x6d/0x90 [ 185.256995][ T5059] ? __pfx_kthread+0x10/0x10 [ 185.261882][ T5059] ret_from_fork_asm+0x1a/0x30 [ 185.266888][ T5059] [ 185.270263][ T5059] Kernel Offset: disabled [ 185.274870][ T5059] Rebooting in 86400 seconds..