./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor940170338 <...> Warning: Permanently added '10.128.1.72' (ED25519) to the list of known hosts. execve("./syz-executor940170338", ["./syz-executor940170338"], 0x7ffd73d9e670 /* 10 vars */) = 0 brk(NULL) = 0x555577d3f000 brk(0x555577d3fd00) = 0x555577d3fd00 arch_prctl(ARCH_SET_FS, 0x555577d3f380) = 0 set_tid_address(0x555577d3f650) = 5777 set_robust_list(0x555577d3f660, 24) = 0 rseq(0x555577d3fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor940170338", 4096) = 27 getrandom("\x57\x78\x2c\xe2\x8a\x51\xf4\x3d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555577d3fd00 brk(0x555577d60d00) = 0x555577d60d00 brk(0x555577d61000) = 0x555577d61000 mprotect(0x7f5874b03000, 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=0x555577d3f650) = 5778 ./strace-static-x86_64: Process 5778 attached [pid 5778] set_robust_list(0x555577d3f660, 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(3) = 0 executing program [pid 5778] write(1, "executing program\n", 18) = 18 [pid 5778] memfd_create("syzkaller", 0) = 3 [pid 5778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f586c600000 [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(0x7f586c600000, 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 [ 183.086592][ T5778] loop0: detected capacity change from 0 to 32768 [ 183.203585][ T5778] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,journal_flush_disabled,fsck,norecovery,nojournal_transaction_names,reconstruct_alloc,no_data_io [ 183.225840][ T5778] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 183.235511][ T5778] bcachefs (loop0): Version upgrade required: [ 183.235511][ T5778] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 183.235511][ T5778] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.13: inode_has_child_snapshots [ 183.235511][ T5778] running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,set_fs_needs_rebalance [ 183.309933][ T5778] bcachefs (loop0): dropping and reconstructing all alloc info [ 183.356266][ T5778] bcachefs (loop0): check_topology... done [ 183.362360][ T5778] bcachefs (loop0): accounting_read... done [ 183.369290][ T5778] bcachefs (loop0): alloc_read... done [ 183.375432][ T5778] bcachefs (loop0): stripes_read... done [ 183.381317][ T5778] bcachefs (loop0): snapshots_read... done [pid 5778] mount("/dev/loop0", "./file1", "bcachefs", MS_SYNCHRONOUS|MS_I_VERSION, "acl,direct_io,norecovery,fsck,journal_flush_disabled,noreTovery,btree_node_mem_ptr_optimization,reco"...) = 0 [pid 5778] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5778] chdir("./file1") = 0 [pid 5778] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5778] ioctl(4, LOOP_CLR_FD) = 0 [pid 5778] close(4) = 0 [pid 5778] socket(AF_UNIX, SOCK_STREAM, 0) = 4 [pid 5778] bind(4, {sa_family=AF_UNIX, sun_path="\xe9\x1f\x71\x89\x59\x1e\x92\x33\x61\x4b"}, 110) = 0 [pid 5778] exit_group(0) = ? [pid 5778] +++ exited with 0 +++ [ 183.387987][ T5778] bcachefs (loop0): check_allocations... done [ 183.467909][ T5778] bcachefs (loop0): going read-write [ 183.484484][ T5778] bcachefs (loop0): done starting filesystem --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5778, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=71 /* 0.71 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 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, child_tidptr=0x555577d3f650) = 5791 ./strace-static-x86_64: Process 5791 attached [pid 5791] set_robust_list(0x555577d3f660, 24) = 0 [pid 5791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5791] setpgid(0, 0) = 0 [pid 5791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 5791] write(3, "1000", 4) = 4 [pid 5791] close(3) = 0 [pid 5791] write(1, "executing program\n", 18) = 18 [pid 5791] memfd_create("syzkaller", 0) = 3 [pid 5791] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f586c600000 [ 183.965746][ T5788] ===================================================== [ 183.973073][ T5788] BUG: KMSAN: uninit-value in bch2_inode_v3_validate+0x481/0x5a0 [ 183.981206][ T5788] bch2_inode_v3_validate+0x481/0x5a0 [ 183.986866][ T5788] bch2_bkey_val_validate+0x2b5/0x440 [ 183.992461][ T5788] validate_bset_keys+0x1531/0x2080 [ 183.997973][ T5788] validate_bset_for_write+0x142/0x290 [ 184.003658][ T5788] __bch2_btree_node_write+0x53df/0x6830 [ 184.009675][ T5788] bch2_btree_node_write+0xa5/0x2e0 [ 184.015225][ T5788] __btree_node_flush+0x606/0x680 [ 184.020432][ T5788] bch2_btree_node_flush1+0x38/0x60 [ 184.025970][ T5788] journal_flush_pins+0xce6/0x1780 [ 184.031266][ T5788] __bch2_journal_reclaim+0xda8/0x1670 [ 184.037001][ T5788] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.043000][ T5788] kthread+0x3e2/0x540 [ 184.047335][ T5788] ret_from_fork+0x6d/0x90 [ 184.051933][ T5788] ret_from_fork_asm+0x1a/0x30 [ 184.057026][ T5788] [ 184.059451][ T5788] Uninit was stored to memory at: [pid 5791] 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 [ 184.064755][ T5788] bch2_sort_keys_keep_unwritten_whiteouts+0x12d5/0x19d0 [ 184.072146][ T5788] __bch2_btree_node_write+0x3ae8/0x6830 [ 184.078182][ T5788] bch2_btree_node_write+0xa5/0x2e0 [ 184.083597][ T5788] __btree_node_flush+0x606/0x680 [ 184.089077][ T5788] bch2_btree_node_flush1+0x38/0x60 [ 184.094468][ T5788] journal_flush_pins+0xce6/0x1780 [ 184.099860][ T5788] __bch2_journal_reclaim+0xda8/0x1670 [ 184.105611][ T5788] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.112281][ T5788] kthread+0x3e2/0x540 [pid 5791] munmap(0x7f586c600000, 138412032) = 0 [pid 5791] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5791] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 5791] ioctl(4, LOOP_CLR_FD) = 0 [pid 5791] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [ 184.116632][ T5788] ret_from_fork+0x6d/0x90 [ 184.121232][ T5788] ret_from_fork_asm+0x1a/0x30 [ 184.126394][ T5788] [ 184.131231][ T5788] Uninit was created at: [ 184.136515][ T5788] ___kmalloc_large_node+0x22c/0x370 [ 184.143474][ T5788] __kmalloc_large_node_noprof+0x3f/0x1e0 [ 184.149613][ T5788] __kmalloc_node_noprof+0xc96/0x1250 [ 184.155304][ T5788] __kvmalloc_node_noprof+0xc0/0x2d0 [ 184.160766][ T5788] btree_node_sort+0x78a/0x1d30 [pid 5791] close(4) = 0 [ 184.166024][ T5788] bch2_btree_post_write_cleanup+0x1b0/0xf20 [ 184.172873][ T5788] bch2_btree_node_write+0x21c/0x2e0 [ 184.178689][ T5788] __btree_node_flush+0x606/0x680 [ 184.183906][ T5788] bch2_btree_node_flush0+0x35/0x60 [ 184.189525][ T5788] journal_flush_pins+0xce6/0x1780 [ 184.194814][ T5788] __bch2_journal_reclaim+0xda8/0x1670 [ 184.200563][ T5788] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.206705][ T5788] kthread+0x3e2/0x540 [ 184.210943][ T5788] ret_from_fork+0x6d/0x90 [ 184.215713][ T5788] ret_from_fork_asm+0x1a/0x30 [ 184.220697][ T5788] [ 184.223145][ T5788] CPU: 1 UID: 0 PID: 5788 Comm: bch-reclaim/loo Not tainted 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0 [ 184.234616][ T5788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 184.245037][ T5788] ===================================================== [ 184.252081][ T5788] Disabling lock debugging due to kernel taint [ 184.258516][ T5788] Kernel panic - not syncing: kmsan.panic set ... [ 184.265081][ T5788] CPU: 1 UID: 0 PID: 5788 Comm: bch-reclaim/loo Tainted: G B 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0 [ 184.277894][ T5788] Tainted: [B]=BAD_PAGE [ 184.282160][ T5788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 184.292369][ T5788] Call Trace: [ 184.295768][ T5788] [ 184.298805][ T5788] dump_stack_lvl+0x216/0x2d0 [ 184.303695][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.309696][ T5788] dump_stack+0x1e/0x24 [ 184.314060][ T5788] panic+0x4e2/0xcf0 [ 184.318156][ T5788] ? kmsan_get_metadata+0x111/0x1c0 [ 184.323554][ T5788] kmsan_report+0x2c7/0x2d0 [ 184.328229][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.333614][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.339006][ T5788] ? __msan_warning+0x95/0x120 [ 184.343988][ T5788] ? bch2_inode_v3_validate+0x481/0x5a0 [ 184.349757][ T5788] ? bch2_bkey_val_validate+0x2b5/0x440 [ 184.355519][ T5788] ? validate_bset_keys+0x1531/0x2080 [ 184.361119][ T5788] ? validate_bset_for_write+0x142/0x290 [ 184.366978][ T5788] ? __bch2_btree_node_write+0x53df/0x6830 [ 184.373024][ T5788] ? bch2_btree_node_write+0xa5/0x2e0 [ 184.378612][ T5788] ? __btree_node_flush+0x606/0x680 [ 184.384008][ T5788] ? bch2_btree_node_flush1+0x38/0x60 [ 184.389573][ T5788] ? journal_flush_pins+0xce6/0x1780 [ 184.395047][ T5788] ? __bch2_journal_reclaim+0xda8/0x1670 [ 184.400861][ T5788] ? bch2_journal_reclaim_thread+0x18e/0x760 [ 184.407046][ T5788] ? kthread+0x3e2/0x540 [ 184.411463][ T5788] ? ret_from_fork+0x6d/0x90 [ 184.416242][ T5788] ? ret_from_fork_asm+0x1a/0x30 [ 184.421407][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.427404][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.432781][ T5788] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 184.439346][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.444720][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.450109][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.456100][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.461483][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.467483][ T5788] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.472856][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.478857][ T5788] __msan_warning+0x95/0x120 [ 184.483679][ T5788] bch2_inode_v3_validate+0x481/0x5a0 [ 184.489279][ T5788] ? __pfx_bch2_inode_v3_validate+0x10/0x10 [ 184.495391][ T5788] bch2_bkey_val_validate+0x2b5/0x440 [ 184.501004][ T5788] validate_bset_keys+0x1531/0x2080 [ 184.506473][ T5788] validate_bset_for_write+0x142/0x290 [ 184.512167][ T5788] __bch2_btree_node_write+0x53df/0x6830 [ 184.518034][ T5788] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.524046][ T5788] ? filter_irq_stacks+0x60/0x1a0 [ 184.529326][ T5788] bch2_btree_node_write+0xa5/0x2e0 [ 184.534745][ T5788] __btree_node_flush+0x606/0x680 [ 184.539967][ T5788] ? __btree_node_flush+0xd3/0x680 [ 184.545287][ T5788] ? __pfx_bch2_btree_node_flush1+0x10/0x10 [ 184.551380][ T5788] bch2_btree_node_flush1+0x38/0x60 [ 184.556787][ T5788] journal_flush_pins+0xce6/0x1780 [ 184.562126][ T5788] __bch2_journal_reclaim+0xda8/0x1670 [ 184.567789][ T5788] ? __try_to_del_timer_sync+0x3d3/0x420 [ 184.573683][ T5788] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.579710][ T5788] kthread+0x3e2/0x540 [ 184.584131][ T5788] ? __pfx_bch2_journal_reclaim_thread+0x10/0x10 [ 184.590668][ T5788] ? __pfx_kthread+0x10/0x10 [ 184.595436][ T5788] ret_from_fork+0x6d/0x90 [ 184.600044][ T5788] ? __pfx_kthread+0x10/0x10 [ 184.604813][ T5788] ret_from_fork_asm+0x1a/0x30 [ 184.609838][ T5788] [ 184.613260][ T5788] Kernel Offset: disabled [ 184.617647][ T5788] Rebooting in 86400 seconds..