./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4053575871 <...> Warning: Permanently added '10.128.0.99' (ED25519) to the list of known hosts. execve("./syz-executor4053575871", ["./syz-executor4053575871"], 0x7ffd9192d8b0 /* 10 vars */) = 0 brk(NULL) = 0x55556613d000 brk(0x55556613dd00) = 0x55556613dd00 arch_prctl(ARCH_SET_FS, 0x55556613d380) = 0 set_tid_address(0x55556613d650) = 5028 set_robust_list(0x55556613d660, 24) = 0 rseq(0x55556613dca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4053575871", 4096) = 28 getrandom("\x29\x23\x7a\xe1\x50\xc0\x14\xe2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556613dd00 brk(0x55556615ed00) = 0x55556615ed00 brk(0x55556615f000) = 0x55556615f000 mprotect(0x7f15a36f1000, 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=0x55556613d650) = 5029 ./strace-static-x86_64: Process 5029 attached [pid 5029] set_robust_list(0x55556613d660, 24) = 0 [pid 5029] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5029] setpgid(0, 0) = 0 [pid 5029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5029] write(3, "1000", 4) = 4 [pid 5029] close(3) = 0 [pid 5029] prlimit64(0, RLIMIT_RTPRIO, {rlim_cur=8, rlim_max=139}, NULL) = 0 [pid 5029] sched_setscheduler(0, SCHED_FIFO, [7]) = 0 [pid 5029] memfd_create("syzkaller", 0) = 3 [pid 5029] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f159b200000 [pid 5029] 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 5029] munmap(0x7f159b200000, 138412032) = 0 [pid 5029] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5029] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5029] close(3) = 0 [pid 5029] close(4) = 0 [pid 5029] mkdir("./file0", 0777) = 0 [ 189.362292][ T5029] loop0: detected capacity change from 0 to 32768 [ 189.525608][ T5029] bcachefs (loop0): mounting version 1.7: mi_btree_bitmap opts=metadata_checksum=xxhash,str_hash=crc32c,nojournal_transaction_names,nocow [ 189.541138][ T5029] bcachefs (loop0): recovering from clean shutdown, journal seq 7 [ 189.636697][ T5029] bcachefs (loop0): alloc_read... done [ 189.642665][ T5029] bcachefs (loop0): stripes_read... done [ 189.649085][ T5029] bcachefs (loop0): snapshots_read... done [ 189.668671][ T5029] bcachefs (loop0): journal_replay... done [ 189.676115][ T5029] bcachefs (loop0): resume_logged_ops... done [pid 5029] mount("/dev/loop0", "./file0", "bcachefs", 0, "metadata_checksum=crc64,nocow,compression=none,compression=gzip,str_hash=crc32c,Gata_checksum=xxhash"...) = 0 [pid 5029] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5029] chdir("./file0") = 0 [pid 5029] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5029] ioctl(4, LOOP_CLR_FD) = 0 [pid 5029] close(4) = 0 [ 189.683748][ T5029] bcachefs (loop0): going read-write [ 189.698350][ T5029] bcachefs (loop0): done starting filesystem [pid 5029] openat(AT_FDCWD, "blkio.bfq.io_queued_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 5029] exit_group(0) = ? [pid 5029] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5029, si_uid=0, si_status=0, si_utime=8 /* 0.08 s */, si_stime=89 /* 0.89 s */} --- openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5042 attached , child_tidptr=0x55556613d650) = 5042 [pid 5042] set_robust_list(0x55556613d660, 24) = 0 [pid 5042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5042] setpgid(0, 0) = 0 [pid 5042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 189.759236][ T5029] syz-executor405 (5029) used greatest stack depth: 5224 bytes left [pid 5042] write(3, "1000", 4) = 4 [pid 5042] close(3) = 0 [pid 5042] prlimit64(0, RLIMIT_RTPRIO, {rlim_cur=8, rlim_max=139}, NULL) = 0 [pid 5042] sched_setscheduler(0, SCHED_FIFO, [7]) = 0 [pid 5042] memfd_create("syzkaller", 0) = 3 [pid 5042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f159b200000 [ 189.845545][ T5037] ===================================================== [ 189.854712][ T5037] BUG: KMSAN: uninit-value in bch2_dirent_invalid+0x1ea/0xa30 [ 189.862665][ T5037] bch2_dirent_invalid+0x1ea/0xa30 [ 189.868281][ T5037] bch2_bkey_val_invalid+0x24f/0x380 [ 189.874411][ T5037] validate_bset_keys+0x12d8/0x25d0 [ 189.879900][ T5037] validate_bset_for_write+0x1dd/0x340 [ 189.886130][ T5037] __bch2_btree_node_write+0x5383/0x67c0 [ 189.892382][ T5037] bch2_btree_node_write+0xa5/0x2e0 [ 189.899079][ T5037] __btree_node_flush+0x4d0/0x640 [ 189.904749][ T5037] bch2_btree_node_flush0+0x35/0x60 [ 189.911346][ T5037] journal_flush_pins+0xce6/0x1780 [ 189.917089][ T5037] __bch2_journal_reclaim+0xd88/0x1610 [ 189.923584][ T5037] bch2_journal_reclaim_thread+0x18e/0x760 [ 189.929792][ T5037] kthread+0x3e2/0x540 [ 189.934910][ T5037] ret_from_fork+0x6d/0x90 [ 189.939603][ T5037] ret_from_fork_asm+0x1a/0x30 [ 189.945521][ T5037] [ 189.949290][ T5037] Uninit was stored to memory at: [ 189.955010][ T5037] bch2_sort_keys+0x2051/0x2cb0 [ 189.961115][ T5037] __bch2_btree_node_write+0x3acd/0x67c0 [ 189.967396][ T5037] bch2_btree_node_write+0xa5/0x2e0 [ 189.973101][ T5037] __btree_node_flush+0x4d0/0x640 [ 189.978487][ T5037] bch2_btree_node_flush0+0x35/0x60 [ 189.984310][ T5037] journal_flush_pins+0xce6/0x1780 [ 189.989875][ T5037] __bch2_journal_reclaim+0xd88/0x1610 [ 189.996110][ T5037] bch2_journal_reclaim_thread+0x18e/0x760 [ 190.003566][ T5037] kthread+0x3e2/0x540 [ 190.008082][ T5037] ret_from_fork+0x6d/0x90 [ 190.013196][ T5037] ret_from_fork_asm+0x1a/0x30 [ 190.018442][ T5037] [ 190.021429][ T5037] Uninit was created at: [ 190.026358][ T5037] __kmalloc_large_node+0x231/0x370 [ 190.031918][ T5037] __kmalloc_node+0xb10/0x10c0 [ 190.037260][ T5037] kvmalloc_node+0xc0/0x2d0 [ 190.042090][ T5037] bch2_btree_node_read_done+0x4e68/0x75e0 [ 190.048930][ T5037] btree_node_read_work+0x8a5/0x1eb0 [ 190.055275][ T5037] bch2_btree_node_read+0x3d42/0x4b50 [ 190.061148][ T5037] bch2_btree_root_read+0xa6c/0x13d0 [ 190.066940][ T5037] read_btree_roots+0x454/0xee0 [ 190.072285][ T5037] bch2_fs_recovery+0x7b6a/0x93e0 [ 190.077865][ T5037] bch2_fs_start+0x7b2/0xbd0 [ 190.082713][ T5037] bch2_fs_open+0x152a/0x15f0 [ 190.088951][ T5037] bch2_mount+0x90d/0x1d90 [ 190.095804][ T5037] legacy_get_tree+0x114/0x290 [ 190.101801][ T5037] vfs_get_tree+0xa7/0x570 [ 190.106759][ T5037] do_new_mount+0x71f/0x15e0 [ 190.111882][ T5037] path_mount+0x742/0x1f20 [ 190.117461][ T5037] __se_sys_mount+0x725/0x810 [ 190.123160][ T5037] __x64_sys_mount+0xe4/0x150 [ 190.128501][ T5037] x64_sys_call+0x2bf4/0x3b50 [ 190.134166][ T5037] do_syscall_64+0xcf/0x1e0 [ 190.139353][ T5037] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 190.145822][ T5037] [ 190.148358][ T5037] CPU: 0 PID: 5037 Comm: bch-reclaim/loo Not tainted 6.9.0-rc7-syzkaller-00056-g45db3ab70092 #0 [ 190.161046][ T5037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 190.171629][ T5037] ===================================================== [ 190.179762][ T5037] Disabling lock debugging due to kernel taint [ 190.188748][ T5037] Kernel panic - not syncing: kmsan.panic set ... [ 190.196226][ T5037] CPU: 0 PID: 5037 Comm: bch-reclaim/loo Tainted: G B 6.9.0-rc7-syzkaller-00056-g45db3ab70092 #0 [ 190.208660][ T5037] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 190.219027][ T5037] Call Trace: [ 190.222575][ T5037] [ 190.225896][ T5037] dump_stack_lvl+0x216/0x2d0 [ 190.231572][ T5037] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.238117][ T5037] dump_stack+0x1e/0x30 [ 190.242557][ T5037] panic+0x4e2/0xcd0 [ 190.246773][ T5037] ? kmsan_get_metadata+0x51/0x1d0 [ 190.254077][ T5037] kmsan_report+0x2d5/0x2e0 [ 190.259708][ T5037] ? kmsan_get_metadata+0x146/0x1d0 [ 190.265447][ T5037] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 190.272113][ T5037] ? __msan_warning+0x95/0x120 [ 190.278904][ T5037] ? bch2_dirent_invalid+0x1ea/0xa30 [ 190.285247][ T5037] ? bch2_bkey_val_invalid+0x24f/0x380 [ 190.291184][ T5037] ? validate_bset_keys+0x12d8/0x25d0 [ 190.296994][ T5037] ? validate_bset_for_write+0x1dd/0x340 [ 190.303682][ T5037] ? __bch2_btree_node_write+0x5383/0x67c0 [ 190.309779][ T5037] ? bch2_btree_node_write+0xa5/0x2e0 [ 190.315618][ T5037] ? __btree_node_flush+0x4d0/0x640 [ 190.322346][ T5037] ? bch2_btree_node_flush0+0x35/0x60 [ 190.328146][ T5037] ? journal_flush_pins+0xce6/0x1780 [ 190.334084][ T5037] ? __bch2_journal_reclaim+0xd88/0x1610 [ 190.340730][ T5037] ? bch2_journal_reclaim_thread+0x18e/0x760 [ 190.347490][ T5037] ? kthread+0x3e2/0x540 [ 190.352429][ T5037] ? ret_from_fork+0x6d/0x90 [ 190.357406][ T5037] ? ret_from_fork_asm+0x1a/0x30 [ 190.364396][ T5037] ? kmsan_get_metadata+0x146/0x1d0 [ 190.369857][ T5037] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.375935][ T5037] ? kmsan_get_metadata+0x146/0x1d0 [ 190.382326][ T5037] ? kmsan_get_metadata+0x146/0x1d0 [ 190.388550][ T5037] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.394888][ T5037] ? kmsan_get_metadata+0x146/0x1d0 [ 190.401083][ T5037] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.408137][ T5037] ? bch2_bkey_ptrs_invalid+0x250d/0x2d40 [ 190.415292][ T5037] ? kmsan_get_metadata+0x146/0x1d0 [ 190.420752][ T5037] ? kmsan_get_metadata+0x146/0x1d0 [ 190.426813][ T5037] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 190.433260][ T5037] __msan_warning+0x95/0x120 [ 190.438748][ T5037] bch2_dirent_invalid+0x1ea/0xa30 [ 190.444554][ T5037] ? kmsan_get_metadata+0x146/0x1d0 [ 190.451153][ T5037] ? __pfx_bch2_dirent_invalid+0x10/0x10 [ 190.457560][ T5037] bch2_bkey_val_invalid+0x24f/0x380 [ 190.463584][ T5037] validate_bset_keys+0x12d8/0x25d0 [ 190.469831][ T5037] validate_bset_for_write+0x1dd/0x340 [ 190.476454][ T5037] __bch2_btree_node_write+0x5383/0x67c0 [ 190.482658][ T5037] ? __update_load_avg_cfs_rq+0x121/0x10e0 [ 190.489194][ T5037] bch2_btree_node_write+0xa5/0x2e0 [ 190.494950][ T5037] __btree_node_flush+0x4d0/0x640 [ 190.500394][ T5037] ? __btree_node_flush+0xd1/0x640 [ 190.505902][ T5037] ? __pfx_bch2_btree_node_flush0+0x10/0x10 [ 190.512120][ T5037] bch2_btree_node_flush0+0x35/0x60 [ 190.517876][ T5037] journal_flush_pins+0xce6/0x1780 [ 190.523373][ T5037] __bch2_journal_reclaim+0xd88/0x1610 [ 190.529272][ T5037] ? __try_to_del_timer_sync+0x3d3/0x420 [ 190.535310][ T5037] bch2_journal_reclaim_thread+0x18e/0x760 [ 190.541867][ T5037] kthread+0x3e2/0x540 [ 190.546497][ T5037] ? __pfx_bch2_journal_reclaim_thread+0x10/0x10 [ 190.553589][ T5037] ? __pfx_kthread+0x10/0x10 [ 190.558448][ T5037] ret_from_fork+0x6d/0x90 [ 190.563220][ T5037] ? __pfx_kthread+0x10/0x10 [ 190.568229][ T5037] ret_from_fork_asm+0x1a/0x30 [ 190.573416][ T5037] [ 190.577000][ T5037] Kernel Offset: disabled [ 190.581613][ T5037] Rebooting in 86400 seconds..