./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor132927324 <...> Warning: Permanently added '10.128.0.20' (ED25519) to the list of known hosts. execve("./syz-executor132927324", ["./syz-executor132927324"], 0x7ffc69c02db0 /* 10 vars */) = 0 brk(NULL) = 0x555567a65000 brk(0x555567a65d00) = 0x555567a65d00 arch_prctl(ARCH_SET_FS, 0x555567a65380) = 0 set_tid_address(0x555567a65650) = 5803 set_robust_list(0x555567a65660, 24) = 0 rseq(0x555567a65ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor132927324", 4096) = 27 getrandom("\xa3\x14\x97\xbb\x2b\x78\x2a\xa2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555567a65d00 brk(0x555567a86d00) = 0x555567a86d00 brk(0x555567a87000) = 0x555567a87000 mprotect(0x7fbbb1556000, 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 5804 attached [pid 5804] set_robust_list(0x555567a65660, 24) = 0 [pid 5804] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5803] <... clone resumed>, child_tidptr=0x555567a65650) = 5804 [pid 5804] <... prctl resumed>) = 0 [pid 5804] setpgid(0, 0) = 0 [pid 5804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 executing program [pid 5804] write(3, "1000", 4) = 4 [pid 5804] close(3) = 0 [pid 5804] write(1, "executing program\n", 18) = 18 [pid 5804] memfd_create("syzkaller", 0) = 3 [pid 5804] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbba9000000 [pid 5804] 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 5804] munmap(0x7fbba9000000, 138412032) = 0 [pid 5804] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5804] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5804] close(3) = 0 [pid 5804] close(4) = 0 [pid 5804] mkdir("./file1", 0777) = 0 [ 183.118743][ T5804] loop0: detected capacity change from 0 to 32768 [ 183.235334][ T5804] 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 [ 183.257494][ T5804] bcachefs (loop0): recovering from clean shutdown, journal seq 10 [ 183.267131][ T5804] bcachefs (loop0): Version upgrade required: [ 183.267131][ T5804] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete [ 183.267131][ T5804] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.13: inode_has_child_snapshots [ 183.267131][ T5804] 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 [ 183.341522][ T5804] bcachefs (loop0): dropping and reconstructing all alloc info [ 183.387720][ T5804] bcachefs (loop0): check_topology... done [ 183.393847][ T5804] bcachefs (loop0): accounting_read... done [ 183.400880][ T5804] bcachefs (loop0): alloc_read... done [ 183.407522][ T5804] bcachefs (loop0): stripes_read... done [ 183.413446][ T5804] bcachefs (loop0): snapshots_read... done [pid 5804] mount("/dev/loop0", "./file1", "bcachefs", MS_I_VERSION, "acl,direct_io,norecovery,fsck,journal_flush_disabled,noreTovery,btree_node_mem_ptr_optimization,reco"...) = 0 [pid 5804] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 5804] chdir("./file1") = 0 [pid 5804] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5804] ioctl(4, LOOP_CLR_FD) = 0 [pid 5804] close(4) = 0 [pid 5804] creat("./bus", 000) = 4 [pid 5804] exit_group(0) = ? [ 183.420084][ T5804] bcachefs (loop0): check_allocations... done [ 183.499514][ T5804] bcachefs (loop0): going read-write [ 183.516541][ T5804] bcachefs (loop0): done starting filesystem [pid 5804] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5804, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=72 /* 0.72 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./strace-static-x86_64: Process 5816 attached , child_tidptr=0x555567a65650) = 5816 [pid 5816] set_robust_list(0x555567a65660, 24) = 0 [pid 5816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5816] setpgid(0, 0) = 0 [pid 5816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5816] write(3, "1000", 4) = 4 executing program [pid 5816] close(3) = 0 [pid 5816] write(1, "executing program\n", 18) = 18 [pid 5816] memfd_create("syzkaller", 0) = 3 [pid 5816] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fbba9000000 [ 183.986545][ T5813] ===================================================== [ 183.993796][ T5813] BUG: KMSAN: uninit-value in bch2_inode_v3_validate+0x481/0x5a0 [ 184.001946][ T5813] bch2_inode_v3_validate+0x481/0x5a0 [ 184.007605][ T5813] bch2_bkey_val_validate+0x2b5/0x440 [ 184.013181][ T5813] validate_bset_keys+0x1531/0x2080 [ 184.018665][ T5813] validate_bset_for_write+0x142/0x290 [ 184.024338][ T5813] __bch2_btree_node_write+0x53df/0x6830 [ 184.030272][ T5813] bch2_btree_node_write+0xa5/0x2e0 [pid 5816] 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 [ 184.035745][ T5813] __btree_node_flush+0x606/0x680 [ 184.040953][ T5813] bch2_btree_node_flush1+0x38/0x60 [ 184.046459][ T5813] journal_flush_pins+0xce6/0x1780 [ 184.051794][ T5813] __bch2_journal_reclaim+0xda8/0x1670 [ 184.057632][ T5813] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.063676][ T5813] kthread+0x3e2/0x540 [ 184.067967][ T5813] ret_from_fork+0x6d/0x90 [ 184.072555][ T5813] ret_from_fork_asm+0x1a/0x30 [ 184.078224][ T5813] [ 184.080648][ T5813] Uninit was stored to memory at: [pid 5816] munmap(0x7fbba9000000, 138412032) = 0 [pid 5816] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5816] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 5816] ioctl(4, LOOP_CLR_FD) = 0 [pid 5816] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 5816] close(4) = 0 [ 184.086016][ T5813] bch2_sort_keys_keep_unwritten_whiteouts+0x12d5/0x19d0 [ 184.094078][ T5813] __bch2_btree_node_write+0x3ae8/0x6830 [ 184.100178][ T5813] bch2_btree_node_write+0xa5/0x2e0 [ 184.106067][ T5813] __btree_node_flush+0x606/0x680 [ 184.113324][ T5813] bch2_btree_node_flush1+0x38/0x60 [ 184.119514][ T5813] journal_flush_pins+0xce6/0x1780 [ 184.124845][ T5813] __bch2_journal_reclaim+0xda8/0x1670 [ 184.134220][ T5813] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.140331][ T5813] kthread+0x3e2/0x540 [ 184.144555][ T5813] ret_from_fork+0x6d/0x90 [ 184.149327][ T5813] ret_from_fork_asm+0x1a/0x30 [ 184.154301][ T5813] [ 184.156800][ T5813] Uninit was created at: [ 184.161298][ T5813] ___kmalloc_large_node+0x22c/0x370 [ 184.167021][ T5813] __kmalloc_large_node_noprof+0x3f/0x1e0 [ 184.172956][ T5813] __kmalloc_node_noprof+0xc96/0x1250 [ 184.178602][ T5813] __kvmalloc_node_noprof+0xc0/0x2d0 [ 184.184121][ T5813] btree_node_sort+0x78a/0x1d30 [ 184.189253][ T5813] bch2_btree_post_write_cleanup+0x1b0/0xf20 [ 184.195447][ T5813] bch2_btree_node_write+0x21c/0x2e0 [ 184.201069][ T5813] __btree_node_flush+0x606/0x680 [ 184.206343][ T5813] bch2_btree_node_flush0+0x35/0x60 [ 184.211723][ T5813] journal_flush_pins+0xce6/0x1780 [ 184.217126][ T5813] __bch2_journal_reclaim+0xda8/0x1670 [ 184.222800][ T5813] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.228902][ T5813] kthread+0x3e2/0x540 [ 184.233134][ T5813] ret_from_fork+0x6d/0x90 [ 184.237785][ T5813] ret_from_fork_asm+0x1a/0x30 [ 184.242755][ T5813] [ 184.245212][ T5813] CPU: 1 UID: 0 PID: 5813 Comm: bch-reclaim/loo Not tainted 6.12.0-syzkaller-10689-g7af08b57bcb9 #0 [ 184.256426][ T5813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 184.266699][ T5813] ===================================================== [ 184.273758][ T5813] Disabling lock debugging due to kernel taint [ 184.280096][ T5813] Kernel panic - not syncing: kmsan.panic set ... [ 184.286662][ T5813] CPU: 1 UID: 0 PID: 5813 Comm: bch-reclaim/loo Tainted: G B 6.12.0-syzkaller-10689-g7af08b57bcb9 #0 [ 184.299126][ T5813] Tainted: [B]=BAD_PAGE [ 184.303392][ T5813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 184.313601][ T5813] Call Trace: [ 184.317021][ T5813] [ 184.320067][ T5813] dump_stack_lvl+0x216/0x2d0 [ 184.324941][ T5813] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.330994][ T5813] dump_stack+0x1e/0x30 [ 184.335317][ T5813] panic+0x4e2/0xcf0 [ 184.339436][ T5813] ? kmsan_get_metadata+0x91/0x1c0 [ 184.344799][ T5813] kmsan_report+0x2c7/0x2d0 [ 184.349516][ T5813] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.354946][ T5813] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.360372][ T5813] ? __msan_warning+0x95/0x120 [ 184.365342][ T5813] ? bch2_inode_v3_validate+0x481/0x5a0 [ 184.371087][ T5813] ? bch2_bkey_val_validate+0x2b5/0x440 [ 184.376846][ T5813] ? validate_bset_keys+0x1531/0x2080 [ 184.382424][ T5813] ? validate_bset_for_write+0x142/0x290 [ 184.388269][ T5813] ? __bch2_btree_node_write+0x53df/0x6830 [ 184.394291][ T5813] ? bch2_btree_node_write+0xa5/0x2e0 [ 184.399863][ T5813] ? __btree_node_flush+0x606/0x680 [ 184.405239][ T5813] ? bch2_btree_node_flush1+0x38/0x60 [ 184.410792][ T5813] ? journal_flush_pins+0xce6/0x1780 [ 184.416303][ T5813] ? __bch2_journal_reclaim+0xda8/0x1670 [ 184.422167][ T5813] ? bch2_journal_reclaim_thread+0x18e/0x760 [ 184.428381][ T5813] ? kthread+0x3e2/0x540 [ 184.432793][ T5813] ? ret_from_fork+0x6d/0x90 [ 184.437559][ T5813] ? ret_from_fork_asm+0x1a/0x30 [ 184.442710][ T5813] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.448755][ T5813] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.454183][ T5813] ? kmsan_internal_set_shadow_origin+0x69/0x100 [ 184.460733][ T5813] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.466156][ T5813] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.471575][ T5813] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.477615][ T5813] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.483034][ T5813] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.489094][ T5813] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.494513][ T5813] ? kmsan_get_shadow_origin_ptr+0x4d/0xb0 [ 184.500552][ T5813] __msan_warning+0x95/0x120 [ 184.505345][ T5813] bch2_inode_v3_validate+0x481/0x5a0 [ 184.510932][ T5813] ? __pfx_bch2_inode_v3_validate+0x10/0x10 [ 184.517042][ T5813] bch2_bkey_val_validate+0x2b5/0x440 [ 184.522643][ T5813] validate_bset_keys+0x1531/0x2080 [ 184.528108][ T5813] validate_bset_for_write+0x142/0x290 [ 184.533809][ T5813] __bch2_btree_node_write+0x53df/0x6830 [ 184.539673][ T5813] ? kmsan_get_metadata+0x13e/0x1c0 [ 184.545176][ T5813] bch2_btree_node_write+0xa5/0x2e0 [ 184.550589][ T5813] __btree_node_flush+0x606/0x680 [ 184.555796][ T5813] ? __btree_node_flush+0xd3/0x680 [ 184.561112][ T5813] ? __pfx_bch2_btree_node_flush1+0x10/0x10 [ 184.567196][ T5813] bch2_btree_node_flush1+0x38/0x60 [ 184.572580][ T5813] journal_flush_pins+0xce6/0x1780 [ 184.577960][ T5813] __bch2_journal_reclaim+0xda8/0x1670 [ 184.583666][ T5813] ? __try_to_del_timer_sync+0x3d3/0x420 [pid 5816] close(3) = 0 [ 184.589538][ T5813] bch2_journal_reclaim_thread+0x18e/0x760 [ 184.595604][ T5813] kthread+0x3e2/0x540 [ 184.599840][ T5813] ? __pfx_bch2_journal_reclaim_thread+0x10/0x10 [ 184.606414][ T5813] ? __pfx_kthread+0x10/0x10 [ 184.611171][ T5813] ret_from_fork+0x6d/0x90 [ 184.615764][ T5813] ? __pfx_kthread+0x10/0x10 [ 184.620534][ T5813] ret_from_fork_asm+0x1a/0x30 [ 184.625528][ T5813] [ 184.628954][ T5813] Kernel Offset: disabled [ 184.633344][ T5813] Rebooting in 86400 seconds..