syzbot


Instances [tested repos]:
Name Last active Uptime Corpus Coverage 🛈 Crashes Execs Kernel build syzkaller build Bugs
Commit Config Freshness Status Commit Freshness Status All Only
ci2-linux-5-15-kasan-arm64 163d broken c79648372d02 .config 205d failing 4c131dc4 5h53m all only
Applied filters: Manager=ci2-linux-5-15-kasan-arm64 (drop) Label=origin:lts-only (drop)
open (228) 🔗
Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Last activity
Internal error in fanotify_ioctl origin:lts-only 2 C error 9 60d 169d 169d
Internal error in prctl_get_tid_address origin:lts-only 2 C error 9 5d17h 173d 173d
Internal error in ns_ioctl origin:lts-only 2 C error 5 14d 174d 174d
Internal error in btf_get_info_by_fd origin:lts-only 2 C error 5 60d 176d 175d
Internal error in sys_getgroups origin:lts-only 2 C error 17 34d 176d 175d
Internal error in sys_get_mempolicy origin:lts-only 2 C error 15 2d06h 178d 173d
Internal error in mm_release origin:lts-only 2 C error 3 5h33m 178d 178d
Internal error in timerfd_read origin:lts-only 2 C error 15 68d 179d 178d
Internal error in ptrace_request origin:lts-only 2 syz error 21 70d 179d 170d
Internal error in __rseq_handle_notify_resume origin:lts-only 2 C error 20 5d17h 179d 175d
Internal error in fault_in_writeable origin:lts-only 2 C error 26 23d 179d 166d
Internal error in fsverity_ioctl_measure origin:lts-only 2 C error 22 37d 179d 178d
Internal error in sys_prctl origin:lts-only 2 C error 55 54d 181d 181d
Internal error in sys_sched_setattr origin:lts-only 2 C error 70 32d 182d 180d
Internal error in pipe_ioctl origin:lts-only 2 C error 32 62d 182d 180d
Internal error in ep_poll origin:lts-only 2 C error 45 35d 182d 177d
Internal error in inotify_ioctl origin:lts-only 2 C error 25 56d 182d 180d
Internal error in prctl_set_mm origin:lts-only 2 C error 16 56d 182d 181d
Internal error in __receive_fd origin:lts-only 2 C error 45 54d 182d 181d
Internal error in fat_dir_ioctl origin:lts-only 2 C error 36 7d15h 182d 180d
Internal error in fscrypt_ioctl_set_policy origin:lts-only 2 C error 100 73d 182d 180d
Internal error in sys_pselect6 origin:lts-only 2 C error 18 57d 182d 180d
Internal error in sys_setgroups origin:lts-only 2 C error 25 56d 182d 181d
Internal error in bpf_obj_get_next_id origin:lts-only 2 C error 76 7d02h 182d 180d
Internal error in __htab_map_lookup_and_delete_batch origin:lts-only 2 C error 20 16d 182d 180d
Internal error in ext2_ioctl origin:lts-only 2 C error 8 3h08m 182d 181d
Internal error in sys_sendfile64 origin:lts-only 2 C error 133 53d 182d 180d
Internal error in generic_map_lookup_batch origin:lts-only 2 C error 21 22d 182d 177d
Internal error in fat_generic_ioctl origin:lts-only 2 C error 103 54d 182d 180d
Internal error in ext4_ioctl origin:lts-only 2 C error 202 23d 182d 180d
Internal error in copy_from_kernel_nofault origin:lts-only 2 C error 33 38d 182d 180d
Internal error in userfaultfd_ioctl origin:lts-only 2 C error 22 63d 182d 181d
Internal error in fault_in_readable origin:lts-only 2 C error 7868 7d03h 183d 180d
Internal error in do_fcntl origin:lts-only 2 C error 14 54d 183d 181d
Internal error in sys_name_to_handle_at origin:lts-only 2 C error 175 57d 183d 180d
Internal error in do_sys_poll origin:lts-only 2 C error 129 53d 183d 181d
Internal error in snapshot_ioctl origin:lts-only 2 C error 48 54d 183d 180d
Internal error in sys_getresuid origin:lts-only 2 C error 608 22d 183d 181d
Internal error in sys_waitid origin:lts-only 2 C error 21 39d 183d 180d
Internal error in filldir64 origin:lts-only 2 C error 2721 53d 183d 181d
Internal error in do_vfs_ioctl origin:lts-only 2 C error 1067 3d13h 183d 180d
Internal error in do_execveat_common origin:lts-only 2 C error 21 37d 183d 180d
Internal error in bpf_vlog_reset origin:lts-only 2 C error 25 56d 183d 180d
Internal error in futex_requeue origin:lts-only 2 C error 113 52d 183d 181d
Internal error in sys_getresgid origin:lts-only 2 C error 472 38d 183d 181d
Internal error in futex_wait_setup origin:lts-only 2 C error 68 38d 183d 181d
Internal error in do_futex origin:lts-only 2 C error 297 39d 183d 181d
Internal error in exit_robust_list origin:lts-only 2 C error 407 39d 183d 181d
Internal error in sys_get_robust_list origin:lts-only 2 C error 212 54d 183d 181d
Internal error in sys_rseq origin:lts-only 2 C error 19 6d18h 183d 180d
Internal error in kernel_clone origin:lts-only 2 C error 722 38d 183d 181d
Internal error in sys_move_pages origin:lts-only 2 C error 112 53d 183d 180d
Internal error in copy_process origin:lts-only 2 C error 703 18d 183d 181d
Internal error in futex_lock_pi_atomic origin:lts-only 2 C error 202 3d06h 183d 181d
Internal error in sys_io_setup origin:lts-only 2 C error 1997 54d 183d 181d
Internal error in cap_validate_magic origin:lts-only 2 C error 2247 1d04h 183d 181d
Internal error in do_notify_resume origin:lts-only 2 C error 452 3d21h 183d 178d
Internal error in sys_mount origin:lts-only 2 C error 6617 141d 183d 181d
Internal error in lookup_ioctx origin:lts-only 2 C error 226 36d 183d 181d
BUG: unable to handle kernel paging request in ft260_i2c_xfer origin:lts-only 8 C unreliable 4 3d04h 195d 181d
INFO: rcu detected stall in sys_utimensat origin:lts-only 1 C error 3 57d 203d 203d
WARNING in hugetlb_split origin:lts-only -1 C error 41847 now 225d 220d
WARNING in hci_recv_frame origin:lts-only -1 syz error 1 223d 225d 225d
BUG: unable to handle kernel paging request in udf_fiiter_write_fi origin:lts-only 8 C error 2 24d 226d 226d
INFO: task hung in p9_fd_close origin:lts-only 1 C error 2 67d 241d 241d
kernel BUG in balance_leaf (2) origin:lts-only -1 C error 3 3d20h 250d 250d
KASAN: use-after-free Read in __ocfs2_flush_truncate_log origin:lts-only 19 C error 3 1d01h 258d 258d
INFO: task hung in user_get_super (4) origin:lts-only 1 C done 4 30d 266d 207d
INFO: rcu detected stall in mount origin:lts-only 1 C error 3 213d 278d 217d
WARNING in ext2_unlink origin:lts-only -1 C error 5 23d 323d 323d
kernel BUG in clear_page_mlock origin:lts-only -1 C error 3 22d 338d 338d
kernel BUG in ocfs2_populate_inode origin:lts-only -1 C error 3 39d 340d 340d
KASAN: vmalloc-out-of-bounds Read in z_erofs_lz4_decompress origin:lts-only 17 C inconclusive 648 13d 347d 347d
possible deadlock in ax25_device_event origin:lts-only 4 C error 276 18m 349d 188d
INFO: rcu detected stall in wb_workfn (2) origin:lts-only 1 C error 65 7d16h 359d 292d
WARNING in reiserfs_mkdir origin:lts-only -1 C error 4 7d12h 360d 360d
possible deadlock in vfs_fileattr_set (2) origin:lts-only 4 C error 3 228d 367d 367d
WARNING in xfs_qm_dqget_cache_insert (2) origin:lts-only -1 C error 4 27d 369d 280d
KASAN: slab-out-of-bounds Read in xfrm_policy_inexact_list_reinsert origin:lts-only 17 C error 497 11d 372d 372d
KASAN: use-after-free Read in xfs_inode_item_push (2) origin:lts-only 19 C inconclusive 2 245d 372d 341d
possible deadlock in deactivate_super origin:lts-only 4 C error 683 253d 374d 374d
WARNING: suspicious RCU usage in rhltable_lookup origin:lts-only 4 C error 5684 12h15m 374d 374d
UBSAN: array-index-out-of-bounds in dtSplitRoot origin:lts-only 19 C error 10 183d 385d 385d
WARNING in init_timer_key origin:lts-only -1 C error 18 13d 392d 392d
WARNING: kmalloc bug in wnd_init origin:lts-only -1 C error 1 41d 396d 396d
KASAN: use-after-free Read in ax25_fillin_cb (2) origin:lts-only 19 C inconclusive 192 13h08m 405d 346d
possible deadlock in ocfs2_read_virt_blocks origin:lts-only 4 C error 309 1d01h 412d 267d
INFO: task hung in virtual_nci_send origin:lts-only 1 C error 8 7d13h 412d 372d
BUG: unable to handle kernel paging request in device_move origin:lts-only 8 syz inconclusive 46 8d07h 418d 68d
WARNING in udf_rename origin:lts-only -1 C done 111 1d17h 423d 75d
INFO: rcu detected stall in dput (3) origin:lts-only 1 syz error 25 23d 425d 80d
possible deadlock in freeze_super (2) origin:lts-only 4 C error 12 37d 429d 429d
INFO: rcu detected stall in sys_sendto (2) origin:lts-only 1 syz done 2 341d 433d 293d
INFO: rcu detected stall in sys_getpid (2) origin:lts-only 1 C error 16 5d04h 434d 147d
WARNING in path_openat (3) origin:lts-only -1 C error 4 9d07h 442d 442d
kernel BUG in clear_inode (3) missing-backport origin:lts-only -1 C done 25 11d 442d 245d
BUG: soft lockup in wg_packet_tx_worker origin:lts-only 1 C error 1 259d 448d 448d
BUG: unable to handle kernel paging request in do_xmote origin:lts-only 8 C error 3 10d 453d 453d
possible deadlock in ocfs2_write_info origin:lts-only 4 C error 54 34d 454d 389d
WARNING: suspicious RCU usage in qdisc_lookup origin:lts-only 4 C inconclusive 10956 18m 471d 469d
general protection fault in update_sit_entry origin:lts-only 8 C error 18 19d 484d 460d
possible deadlock in ocfs2_remap_file_range origin:lts-only 4 C done 90 51d 492d 300d
possible deadlock in ocfs2_truncate_file origin:lts-only 4 C error 35 34d 493d 348d
UBSAN: shift-out-of-bounds in ocfs2_fill_super missing-backport origin:lts-only -1 C done 85 1d22h 495d 351d
possible deadlock in ocfs2_lock_global_qf origin:lts-only 4 C done 302 21d 496d 268d
possible deadlock in ocfs2_reserve_local_alloc_bits origin:lts-only 4 C error 1556 12d 498d 497d
possible deadlock in ocfs2_acquire_dquot origin:lts-only 4 C error 14879 4d20h 499d 498d
possible deadlock in ocfs2_setattr origin:lts-only 4 C done 570 10d 504d 391d
possible deadlock in ocfs2_reserve_suballoc_bits origin:lts-only 4 C done 5344 54m 511d 321d
INFO: rcu detected stall in mld_ifc_work origin:lts-only 1 C error 8 35d 515d 285d
general protection fault in reiserfs_get_block origin:lts-only 8 C error 13 16d 515d 357d
WARNING: bad unlock balance in l2cap_recv_frame (2) origin:lts-only 4 C inconclusive 303 12d 517d 517d
INFO: rcu detected stall in addrconf_dad_work origin:lts-only 1 syz done 5 204d 524d 505d
possible deadlock in ntfs_file_mmap origin:lts-only 4 C error 498 164d 537d 537d
INFO: rcu detected stall in tc_modify_qdisc origin:lts-only 1 C error 23 34d 543d 454d
INFO: task hung in uevent_show origin:lts-only 1 C inconclusive 50 28d 544d 71d
INFO: task hung in freeze_super missing-backport origin:lts-only 1 C error 17 7d07h 546d 546d
kernel BUG in ntfs_truncate origin:lts-only -1 C error 3 17d 546d 546d
BUG: unable to handle kernel paging request in ft260_smbus_xfer origin:lts-only 8 C error 64 8d11h 560d 560d
WARNING in btrfs_add_link (2) origin:lts-only -1 C error 8 6h24m 560d 560d
BUG: unable to handle kernel paging request in mcp_smbus_xfer origin:lts-only 8 C error 276 2h26m 561d 208d
general protection fault in u2fzero_rng_read origin:lts-only 8 C inconclusive 231 13d 561d 560d
INFO: task hung in synchronize_rcu (3) origin:lts-only 1 C error 16 7h33m 561d 560d
KASAN: use-after-free Read in reiserfs_release_objectid missing-backport origin:lts-only 19 C error 128 5d18h 563d 540d
WARNING in md_alloc origin:lts-only -1 C done 6 8d00h 583d 575d
BUG: sleeping function called from invalid context in lock_sock_nested missing-backport origin:lts-only 19 C done 25 30d 588d 98d
KASAN: use-after-free Read in qd_unlock origin:lts-only 19 C done 5508 3h12m 593d 270d
INFO: rcu detected stall in sys_futex (2) origin:lts-only 1 syz error 60 4d17h 612d 401d
BUG: unable to handle kernel paging request in mark_buffer_dirty_inode origin:lts-only 8 C error 2 481d 621d 620d
possible deadlock in sco_connect_cfm origin:lts-only 4 C inconclusive 26 6d06h 635d 588d
KASAN: use-after-free Write in gfs2_qd_shrink_scan origin:lts-only 22 C done 185 2d04h 643d 241d
INFO: task hung in blkdev_common_ioctl (2) missing-backport origin:lts-only 1 C inconclusive 8 15d 643d 643d
KASAN: use-after-free Read in f2fs_iget missing-backport origin:lts-only 19 C error 6 36d 643d 643d
INFO: task hung in ext4_quota_write (2) origin:lts-only 1 C error 11 135d 644d 574d
possible deadlock in btrfs_run_dev_stats origin:lts-only 4 C error 17 3d12h 646d 646d
KASAN: null-ptr-deref Write in udf_bread origin:lts-only 12 C done 94 9d00h 648d 635d
WARNING: held lock freed in inet_sendmsg origin:lts-only 4 C error 2 18d 662d 662d
INFO: task hung in lookup_slow (2) missing-backport origin:lts-only 1 C error 56 34d 663d 445d
general protection fault in step_into origin:lts-only 11 C done 305 9d05h 665d 594d
BUG: unable to handle kernel NULL pointer dereference in f2fs_update_meta_page origin:lts-only 10 C done 9 23d 670d 569d
possible deadlock in filemap_fault (2) missing-backport origin:lts-only 4 C error 70 2d23h 672d 662d
INFO: rcu detected stall in sys_rt_sigreturn missing-backport origin:lts-only 1 C done 145 3d15h 677d 205d
possible deadlock in filename_create (2) missing-backport origin:lts-only 4 C done 25 9d09h 679d 222d
WARNING in lookup_slow (3) origin:lts-only -1 C error 8 38d 679d 611d
WARNING in ieee80211_mgd_probe_ap_send origin:lts-only -1 C done 4 52d 680d 6d12h
BUG: sleeping function called from invalid context in console_lock (2) origin:lts-only 5 C error 18 38d 687d 593d
possible deadlock in sch_direct_xmit (2) origin:lts-only 4 C error 16 41d 716d 630d
WARNING in iomap_page_release origin:lts-only -1 C done 173 1d16h 719d 717d
INFO: rcu detected stall in br_handle_frame origin:lts-only 1 C inconclusive 3 80d 730d 730d
kernel BUG in reiserfs_rename missing-backport origin:lts-only -1 C error 2 35d 747d 747d
KASAN: use-after-free Read in ntfs_attr_find missing-backport origin:lts-only 19 C done 5 42d 749d 588d
possible deadlock in team_del_slave (2) origin:lts-only 4 C error 82 5d18h 757d 751d
possible deadlock in __dev_queue_xmit (2) origin:lts-only 4 C done 124 3d13h 785d 627d
WARNING in ieee80211_probe_client origin:lts-only -1 C inconclusive 277 21d 786d 700d
possible deadlock in lookup_slow (2) origin:lts-only 4 C inconclusive 131 4d08h 787d 705d
INFO: rcu detected stall in addrconf_rs_timer origin:lts-only 1 C error 88 7d19h 790d 695d
BUG: sleeping function called from invalid context in __lock_sock_fast origin:lts-only 5 C error 121 1d00h 797d 711d
possible deadlock in inet_sk_diag_fill origin:lts-only 4 C inconclusive 1171 13h05m 799d 798d
possible deadlock in console_trylock_spinning (2) origin:lts-only 4 C done 183 8d07h 801d 747d
UBSAN: shift-out-of-bounds in parse_options origin:lts-only -1 C unreliable 448 2d13h 811d 811d
possible deadlock in rfkill_epo missing-backport origin:lts-only 4 C inconclusive 4200 20h54m 836d 833d
INFO: rcu detected stall in corrupted origin:lts-only 1 C error 103 8d00h 838d 823d
KASAN: use-after-free Read in jbd2_journal_get_write_access origin:lts-only 19 C inconclusive 8 67d 863d 786d
WARNING in iomap_page_mkwrite origin:lts-only -1 C inconclusive 694 5d21h 865d 855d
WARNING in btrfs_chunk_alloc (2) origin:lts-only -1 C 51 25d 866d 628d
KASAN: null-ptr-deref Write in btrfs_root_node (2) origin:lts-only 12 C done 53 11d 873d 760d
WARNING in btrfs_sync_log (2) origin:lts-only -1 C error 4 49d 882d 882d
INFO: task hung in gfs2_gl_hash_clear origin:lts-only 1 C inconclusive 3019 8d20h 921d 921d
WARNING in sta_info_insert_rcu missing-backport origin:lts-only -1 C inconclusive 7 23d 922d 922d
KASAN: use-after-free Read in ext4_find_extent origin:lts-only 19 C inconclusive 7 46d 934d 934d
WARNING in btrfs_drop_extents origin:lts-only -1 C error 2 62d 936d 936d
INFO: rcu detected stall in cleanup_net origin:lts-only 1 C inconclusive 170 16h48m 942d 159d
WARNING in do_mkdirat origin:lts-only -1 C inconclusive 22 32d 948d 477d
kernel BUG in clear_state_bit missing-backport origin:lts-only -1 C done 4 49d 959d 411d
INFO: rcu detected stall in batadv_nc_worker origin:lts-only 1 C done 320 12h01m 970d 191d
WARNING in loop_add origin:lts-only -1 C done 5 34d 981d 312d
BUG: unable to handle kernel paging request in __xfs_free_extent origin:lts-only 8 C error 31 19d 986d 986d
possible deadlock in lock_timer_base origin:lts-only 4 C done 184 365d 989d 579d
WARNING in drm_clflush_pages origin:lts-only -1 C error 9676 4d07h 989d 989d
kernel BUG in ntfs_iget missing-backport origin:lts-only -1 C done 9 31d 999d 335d
KASAN: slab-out-of-bounds Read in ntfs_readdir missing-backport origin:lts-only 17 C done 95 9d06h 1017d 446d
WARNING in btrfs_commit_transaction origin:lts-only -1 C done 81 9d02h 1027d 778d
WARNING in journal_end origin:lts-only -1 C 74 1d21h 1030d 985d
KASAN: use-after-free Read in ntfs_lookup_inode_by_name missing-backport origin:lts-only 19 C done 10 18d 1032d 272d
WARNING in btrfs_rename2 origin:lts-only -1 C error 6 69d 1034d 945d
WARNING in btrfs_replace_file_extents origin:lts-only -1 C done 17 40d 1034d 439d
kernel BUG in __hfsplus_setxattr origin:lts-only -1 C error 204 163d 1038d 976d
KASAN: null-ptr-deref Read in do_journal_end missing-backport origin:lts-only 11 C done 699 3d21h 1038d 142d
WARNING in _btrfs_ioctl_set_received_subvol origin:lts-only -1 C error 3 62d 1039d 930d
WARNING in btrfs_run_delayed_refs origin:lts-only -1 C error 25 55d 1042d 1042d
WARNING in ext4_expand_extra_isize_ea origin:lts-only -1 C done 2301 15h09m 1045d 857d
possible deadlock in ntfs_fiemap origin:lts-only 4 C error 48 10d 1045d 996d
WARNING in btrfs_put_block_group origin:lts-only -1 C error 75 31d 1046d 1045d
BUG: unable to handle kernel paging request in mem_cgroup_track_foreign_dirty_slowpath origin:lts-only 8 C error 47 13d 1047d 1047d
possible deadlock in attr_data_get_block origin:lts-only 4 C done 403 5d11h 1048d 859d
possible deadlock in console_lock_spinning_enable origin:lts-only 4 C done 2452 4d02h 1049d 766d
BUG: MAX_LOCKDEP_KEYS too low! origin:lts-only -1 C error 11 16d 1055d 1055d
INFO: trying to register non-static key in gsmld_write_wakeup origin:lts-only -1 C inconclusive 2313 5d07h 1055d 1055d
WARNING in inc_nlink origin:lts-only -1 C done 798 8d06h 1055d 794d
WARNING in nilfs_dat_commit_end origin:lts-only -1 C done 25818 3h40m 1056d 889d
BUG: soft lockup in smp_call_function missing-backport origin:lts-only 1 C error 297 3d10h 1056d 961d
VFS: Busy inodes after unmount (use-after-free) missing-backport origin:lts-only 2 C error 2554 3d23h 1056d 1056d
WARNING in udf_truncate_extents origin:lts-only -1 C done 206 12d 1057d 315d
WARNING in del_gendisk origin:lts-only -1 C inconclusive 172 7d16h 1059d 1059d
KASAN: slab-out-of-bounds Read in hfsplus_uni2asc origin:lts-only 17 C error 356 13h31m 1059d 1008d
BUG: unable to handle kernel NULL pointer dereference in ntfs_sparse_cluster origin:lts-only 10 C done 818 2d04h 1060d 880d
possible deadlock in sco_conn_del missing-backport origin:lts-only 4 C inconclusive 521 3d15h 1061d 1000d
BUG: unable to handle kernel paging request in bio_associate_blkg_from_css origin:lts-only 8 C error 114953 1h11m 1061d 1061d
KASAN: use-after-free Read in xfs_iflush_cluster missing-backport origin:lts-only 19 C done 401 6d04h 1062d 847d
KASAN: slab-out-of-bounds Read in hci_le_meta_evt origin:lts-only 17 C done 7238 14h36m 1062d 862d
WARNING in split_huge_page_to_list origin:lts-only -1 C error 1410 39d 1063d 1063d
possible deadlock in ext4_map_blocks origin:lts-only 4 C done 621 1d04h 1064d 621d
BUG: sleeping function called from invalid context in f2fs_register_inmem_page origin:lts-only 5 C done 25 28d 1064d 873d
WARNING in dev_watchdog missing-backport origin:lts-only -1 C inconclusive 271 16d 1065d 986d
WARNING in hci_conn_timeout origin:lts-only -1 C done 1337 2d18h 1065d 809d
KASAN: null-ptr-deref Write in xlog_cil_commit origin:lts-only 12 C done 1566 6h40m 1065d 837d
BUG: soft lockup in batadv_iv_send_outstanding_bat_ogm_packet origin:lts-only 1 C done 105 2d22h 1066d 179d
INFO: trying to register non-static key in gsmld_write origin:lts-only -1 C inconclusive 10465 14h48m 1066d 1065d
possible deadlock in __loop_clr_fd origin:lts-only 4 C done 8388 48m 1066d 851d
INFO: task hung in iterate_supers origin:lts-only 1 C 362 1d01h 1067d 1056d
lost connection to test machine origin:lts-only -1 C done 30429 22h00m 1067d 49d
UBSAN: shift-out-of-bounds in ntfs_fill_super missing-backport origin:lts-only -1 C done 2731 14h14m 1067d 332d
possible deadlock in dquot_commit origin:lts-only 4 C done 25957 42m 1067d 836d
WARNING in ext4_set_page_dirty origin:lts-only -1 C done 267 2d08h 1067d 883d
BUG: sleeping function called from invalid context in kernfs_walk_and_get_ns origin:lts-only 5 C inconclusive 5560 14h17m 1068d 1067d
possible deadlock in __jbd2_log_wait_for_space origin:lts-only 4 C inconclusive 1257 37d 1068d 791d
possible deadlock in jbd2_journal_lock_updates origin:lts-only 4 C inconclusive 38372 12d 1068d 1067d
possible deadlock in ext4_bmap origin:lts-only 4 C inconclusive 22334 1d18h 1068d 1067d