./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2314248190 <...> Warning: Permanently added '10.128.1.91' (ED25519) to the list of known hosts. execve("./syz-executor2314248190", ["./syz-executor2314248190"], 0x7ffcad393d40 /* 10 vars */) = 0 brk(NULL) = 0x555570d4b000 brk(0x555570d4bd00) = 0x555570d4bd00 arch_prctl(ARCH_SET_FS, 0x555570d4b380) = 0 set_tid_address(0x555570d4b650) = 5780 set_robust_list(0x555570d4b660, 24) = 0 rseq(0x555570d4bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2314248190", 4096) = 28 getrandom("\x02\xb0\x33\xb6\xfc\x12\x79\x63", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555570d4bd00 brk(0x555570d6cd00) = 0x555570d6cd00 brk(0x555570d6d000) = 0x555570d6d000 mprotect(0x7f2960b75000, 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=0x555570d4b650) = 5781 ./strace-static-x86_64: Process 5781 attached [pid 5781] set_robust_list(0x555570d4b660, 24) = 0 [pid 5781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5781] setpgid(0, 0) = 0 [pid 5781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5781] write(3, "1000", 4) = 4 [pid 5781] close(3executing program ) = 0 [pid 5781] write(1, "executing program\n", 18) = 18 [pid 5781] prlimit64(0, RLIMIT_RTPRIO, NULL, NULL) = 0 [pid 5781] sched_setscheduler(0, SCHED_FIFO, NULL) = -1 EINVAL (Invalid argument) [pid 5781] memfd_create("syzkaller", 0) = 3 [pid 5781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2958600000 [pid 5781] 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 5781] munmap(0x7f2958600000, 138412032) = 0 [pid 5781] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5781] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5781] close(3) = 0 [pid 5781] close(4) = 0 [pid 5781] mkdir("./file1", 0777) = 0 [ 181.526243][ T5781] loop0: detected capacity change from 0 to 32768 [ 181.651112][ T5781] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=gzip,erasure_code,norecovery,noexcl,reconstruct_alloc [ 181.669396][ T5781] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 181.679208][ T5781] bcachefs (loop0): Version upgrade required: [ 181.679208][ T5781] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 181.679208][ T5781] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.13: inode_has_child_snapshots [ 181.679208][ T5781] 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 [ 181.754796][ T5781] bcachefs (loop0): dropping and reconstructing all alloc info [ 181.802554][ T5781] bcachefs (loop0): accounting_read... done [ 181.809372][ T5781] bcachefs (loop0): alloc_read... done [ 181.815416][ T5781] bcachefs (loop0): stripes_read... done [ 181.821478][ T5781] bcachefs (loop0): snapshots_read... done [pid 5781] mount("/dev/loop0", "./file1", "bcachefs", MS_I_VERSION, "noexcl,journal_transaction_names,norecovery,compression=lz4,erasure_code,compression=zstd,inline_dat"...) = 0 [pid 5781] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5781] chdir("./file1") = 0 [pid 5781] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5781] ioctl(4, LOOP_CLR_FD) = 0 [pid 5781] close(4) = 0 [ 181.828202][ T5781] bcachefs (loop0): check_allocations... done [ 181.907557][ T5781] bcachefs (loop0): going read-write [ 181.930593][ T5781] bcachefs (loop0): done starting filesystem [pid 5781] mkdir("./bus", 0777) = 0 [pid 5781] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- [pid 5781] +++ killed by SIGSEGV +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5781, si_uid=0, si_status=SIGSEGV, si_utime=4 /* 0.04 s */, si_stime=77 /* 0.77 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 5794 attached [pid 5794] set_robust_list(0x555570d4b660, 24 [pid 5780] <... clone resumed>, child_tidptr=0x555570d4b650) = 5794 [pid 5794] <... set_robust_list resumed>) = 0 [pid 5794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5794] setpgid(0, 0) = 0 [pid 5794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 5794] write(3, "1000", 4) = 4 [pid 5794] close(3) = 0 [pid 5794] write(1, "executing program\n", 18) = 18 [pid 5794] prlimit64(0, RLIMIT_RTPRIO, NULL, NULL) = 0 [pid 5794] sched_setscheduler(0, SCHED_FIFO, NULL) = -1 EINVAL (Invalid argument) [pid 5794] memfd_create("syzkaller", 0) = 3 [pid 5794] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f2958600000 [ 182.303606][ T5791] ===================================================== [ 182.310956][ T5791] BUG: KMSAN: uninit-value in bch2_inode_v3_validate+0x481/0x5a0 [ 182.319121][ T5791] bch2_inode_v3_validate+0x481/0x5a0 [ 182.324808][ T5791] bch2_bkey_val_validate+0x2b5/0x440 [ 182.330402][ T5791] validate_bset_keys+0x1531/0x2080 [ 182.335920][ T5791] validate_bset_for_write+0x142/0x290 [ 182.341617][ T5791] __bch2_btree_node_write+0x53df/0x6830 [ 182.347636][ T5791] bch2_btree_node_write+0xa5/0x2e0 [ 182.353144][ T5791] __btree_node_flush+0x606/0x680 [ 182.358356][ T5791] bch2_btree_node_flush1+0x38/0x60 [ 182.363883][ T5791] journal_flush_pins+0xce6/0x1780 [ 182.369175][ T5791] __bch2_journal_reclaim+0xda8/0x1670 [ 182.374909][ T5791] bch2_journal_reclaim_thread+0x18e/0x760 [ 182.380910][ T5791] kthread+0x3e2/0x540 [ 182.385332][ T5791] ret_from_fork+0x6d/0x90 [ 182.389939][ T5791] ret_from_fork_asm+0x1a/0x30 [ 182.395075][ T5791] [ 182.397494][ T5791] Uninit was stored to memory at: [ 182.402955][ T5791] bch2_sort_keys_keep_unwritten_whiteouts+0x12d5/0x19d0 [ 182.410231][ T5791] __bch2_btree_node_write+0x3ae8/0x6830 [ 182.416278][ T5791] bch2_btree_node_write+0xa5/0x2e0 [ 182.421694][ T5791] __btree_node_flush+0x606/0x680 [ 182.427540][ T5791] bch2_btree_node_flush1+0x38/0x60 [ 182.433030][ T5791] journal_flush_pins+0xce6/0x1780 [ 182.438334][ T5791] __bch2_journal_reclaim+0xda8/0x1670 [ 182.444155][ T5791] bch2_journal_reclaim_thread+0x18e/0x760 [ 182.450166][ T5791] kthread+0x3e2/0x540 [ 182.454725][ T5791] ret_from_fork+0x6d/0x90 [ 182.459331][ T5791] ret_from_fork_asm+0x1a/0x30 [ 182.464463][ T5791] [ 182.466881][ T5791] Uninit was created at: [ 182.471381][ T5791] ___kmalloc_large_node+0x22c/0x370 [ 182.477035][ T5791] __kmalloc_large_node_noprof+0x3f/0x1e0 [ 182.483095][ T5791] __kmalloc_node_noprof+0xc96/0x1250 [ 182.488677][ T5791] __kvmalloc_node_noprof+0xc0/0x2d0 [ 182.494301][ T5791] btree_node_sort+0x78a/0x1d30 [ 182.499372][ T5791] bch2_btree_post_write_cleanup+0x1b0/0xf20 [ 182.505773][ T5791] bch2_btree_node_write+0x21c/0x2e0 [ 182.511268][ T5791] __btree_node_flush+0x606/0x680 [ 182.516654][ T5791] bch2_btree_node_flush0+0x35/0x60 [ 182.522055][ T5791] journal_flush_pins+0xce6/0x1780 [ 182.527513][ T5791] __bch2_journal_reclaim+0xda8/0x1670 [ 182.533246][ T5791] bch2_journal_reclaim_thread+0x18e/0x760 [ 182.539250][ T5791] kthread+0x3e2/0x540 [ 182.543657][ T5791] ret_from_fork+0x6d/0x90 [ 182.548266][ T5791] ret_from_fork_asm+0x1a/0x30 [ 182.553421][ T5791] [ 182.555874][ T5791] CPU: 0 UID: 0 PID: 5791 Comm: bch-reclaim/loo Not tainted 6.13.0-rc6-syzkaller-00231-g77a903cd8e5a #0 [ 182.567320][ T5791] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 182.577639][ T5791] ===================================================== [ 182.584843][ T5791] Disabling lock debugging due to kernel taint [ 182.591139][ T5791] Kernel panic - not syncing: kmsan.panic set ... [pid 5794] 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 5794] munmap(0x7f2958600000, 138412032) = 0 [pid 5794] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 182.597708][ T5791] CPU: 0 UID: 0 PID: 5791 Comm: bch-reclaim/loo Tainted: G B 6.13.0-rc6-syzkaller-00231-g77a903cd8e5a #0 [ 182.610613][ T5791] Tainted: [B]=BAD_PAGE [ 182.614887][ T5791] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 182.625095][ T5791] Call Trace: [ 182.628500][ T5791] [ 182.631547][ T5791] dump_stack_lvl+0x216/0x2d0 [ 182.636451][ T5791] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 182.642463][ T5791] dump_stack+0x1e/0x24 [ 182.646830][ T5791] panic+0x4e2/0xcf0 [pid 5794] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 5794] ioctl(4, LOOP_CLR_FD) = 0 [pid 5794] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 5794] close(4) = 0 [ 182.650931][ T5791] ? kmsan_get_metadata+0xc1/0x1c0 [ 182.656246][ T5791] kmsan_report+0x2c7/0x2d0 [ 182.660921][ T5791] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.666315][ T5791] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.671703][ T5791] ? __msan_warning+0x95/0x120 [ 182.676690][ T5791] ? bch2_inode_v3_validate+0x481/0x5a0 [ 182.682449][ T5791] ? bch2_bkey_val_validate+0x2b5/0x440 [ 182.688219][ T5791] ? validate_bset_keys+0x1531/0x2080 [ 182.693828][ T5791] ? validate_bset_for_write+0x142/0x290 [ 182.699686][ T5791] ? __bch2_btree_node_write+0x53df/0x6830 [ 182.705715][ T5791] ? bch2_btree_node_write+0xa5/0x2e0 [ 182.711303][ T5791] ? __btree_node_flush+0x606/0x680 [ 182.716696][ T5791] ? bch2_btree_node_flush1+0x38/0x60 [ 182.722265][ T5791] ? journal_flush_pins+0xce6/0x1780 [ 182.727731][ T5791] ? __bch2_journal_reclaim+0xda8/0x1670 [ 182.733548][ T5791] ? bch2_journal_reclaim_thread+0x18e/0x760 [ 182.739733][ T5791] ? kthread+0x3e2/0x540 [ 182.744145][ T5791] ? ret_from_fork+0x6d/0x90 [ 182.748921][ T5791] ? ret_from_fork_asm+0x1a/0x30 [ 182.754078][ T5791] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 182.760073][ T5791] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.765452][ T5791] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 182.772012][ T5791] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.777389][ T5791] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.782762][ T5791] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 182.788747][ T5791] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.794124][ T5791] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 182.800129][ T5791] ? kmsan_get_metadata+0x13e/0x1c0 [ 182.805507][ T5791] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 182.811508][ T5791] __msan_warning+0x95/0x120 [ 182.816319][ T5791] bch2_inode_v3_validate+0x481/0x5a0 [ 182.821925][ T5791] ? __pfx_bch2_inode_v3_validate+0x10/0x10 [ 182.828041][ T5791] bch2_bkey_val_validate+0x2b5/0x440 [ 182.833658][ T5791] validate_bset_keys+0x1531/0x2080 [ 182.839132][ T5791] validate_bset_for_write+0x142/0x290 [ 182.844830][ T5791] __bch2_btree_node_write+0x53df/0x6830 [ 182.850706][ T5791] ? __update_load_avg_se+0xbd1/0x11a0 [ 182.856450][ T5791] bch2_btree_node_write+0xa5/0x2e0 [ 182.861880][ T5791] __btree_node_flush+0x606/0x680 [ 182.867097][ T5791] ? __btree_node_flush+0xd3/0x680 [ 182.872417][ T5791] ? __pfx_bch2_btree_node_flush1+0x10/0x10 [ 182.878526][ T5791] bch2_btree_node_flush1+0x38/0x60 [ 182.883930][ T5791] journal_flush_pins+0xce6/0x1780 [ 182.889269][ T5791] __bch2_journal_reclaim+0xda8/0x1670 [ 182.894928][ T5791] ? __try_to_del_timer_sync+0x3d3/0x420 [ 182.900809][ T5791] bch2_journal_reclaim_thread+0x18e/0x760 [ 182.906839][ T5791] kthread+0x3e2/0x540 [ 182.911088][ T5791] ? __pfx_bch2_journal_reclaim_thread+0x10/0x10 [ 182.917635][ T5791] ? __pfx_kthread+0x10/0x10 [ 182.922405][ T5791] ret_from_fork+0x6d/0x90 [ 182.927011][ T5791] ? __pfx_kthread+0x10/0x10 [ 182.931779][ T5791] ret_from_fork_asm+0x1a/0x30 [ 182.936785][ T5791] [ 182.940192][ T5791] Kernel Offset: disabled [ 182.944587][ T5791] Rebooting in 86400 seconds..