Hello, syzbot found the following issue on: HEAD commit: 7367539ad4b0 Merge tag 'cxl-fixes-6.9-rc7' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13ad5e60980000 kernel config: https://syzkaller.appspot.com/x/.config?x=bbf567496022057b dashboard link: https://syzkaller.appspot.com/bug?extid=d3803303d5b280e059d8 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/44fb709c4e9c/disk-7367539a.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d25971073eca/vmlinux-7367539a.xz kernel image: https://storage.googleapis.com/syzbot-assets/a327aa91b63e/bzImage-7367539a.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d3803303d5b280e059d8@xxxxxxxxxxxxxxxxxxxxxxxxx bcachefs (loop2): going read-only bcachefs (loop2): finished waiting for writes to stop bcachefs (loop2): flushing journal and stopping allocators, journal seq 9 ===================================================== BUG: KMSAN: uninit-value in bch2_inode_v3_invalid+0x390/0x520 fs/bcachefs/inode.c:516 bch2_inode_v3_invalid+0x390/0x520 fs/bcachefs/inode.c:516 bch2_bkey_val_invalid+0x24f/0x380 fs/bcachefs/bkey_methods.c:140 bset_key_invalid fs/bcachefs/btree_io.c:831 [inline] validate_bset_keys+0x12d8/0x25d0 fs/bcachefs/btree_io.c:904 validate_bset_for_write+0x1dd/0x340 fs/bcachefs/btree_io.c:1945 __bch2_btree_node_write+0x5383/0x67c0 fs/bcachefs/btree_io.c:2155 bch2_btree_node_write+0xa5/0x2e0 fs/bcachefs/btree_io.c:2288 btree_node_write_if_need fs/bcachefs/btree_io.h:153 [inline] __btree_node_flush+0x4d0/0x640 fs/bcachefs/btree_trans_commit.c:229 bch2_btree_node_flush0+0x35/0x60 fs/bcachefs/btree_trans_commit.c:238 journal_flush_pins+0xce6/0x1780 fs/bcachefs/journal_reclaim.c:553 journal_flush_done+0x156/0x3f0 fs/bcachefs/journal_reclaim.c:809 bch2_journal_flush_pins+0xdb/0x3b0 fs/bcachefs/journal_reclaim.c:839 bch2_journal_flush_all_pins fs/bcachefs/journal_reclaim.h:76 [inline] __bch2_fs_read_only+0x1b9/0x750 fs/bcachefs/super.c:277 bch2_fs_read_only+0xcb4/0x1540 fs/bcachefs/super.c:357 __bch2_fs_stop+0x112/0x6f0 fs/bcachefs/super.c:622 bch2_put_super+0x3c/0x50 fs/bcachefs/fs.c:1788 generic_shutdown_super+0x194/0x4c0 fs/super.c:641 bch2_kill_sb+0x3d/0x70 fs/bcachefs/fs.c:2012 deactivate_locked_super+0xe0/0x3f0 fs/super.c:472 deactivate_super+0x14f/0x160 fs/super.c:505 cleanup_mnt+0x6c6/0x730 fs/namespace.c:1267 __cleanup_mnt+0x22/0x30 fs/namespace.c:1274 task_work_run+0x268/0x310 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x160 kernel/entry/common.c:218 do_syscall_64+0xdc/0x1e0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: memcpy_u64s_small fs/bcachefs/util.h:511 [inline] bkey_p_copy fs/bcachefs/bkey.h:46 [inline] bch2_sort_keys+0x1fdf/0x2cb0 fs/bcachefs/bkey_sort.c:194 __bch2_btree_node_write+0x3acd/0x67c0 fs/bcachefs/btree_io.c:2100 bch2_btree_node_write+0xa5/0x2e0 fs/bcachefs/btree_io.c:2288 btree_node_write_if_need fs/bcachefs/btree_io.h:153 [inline] __btree_node_flush+0x4d0/0x640 fs/bcachefs/btree_trans_commit.c:229 bch2_btree_node_flush0+0x35/0x60 fs/bcachefs/btree_trans_commit.c:238 journal_flush_pins+0xce6/0x1780 fs/bcachefs/journal_reclaim.c:553 journal_flush_done+0x156/0x3f0 fs/bcachefs/journal_reclaim.c:809 bch2_journal_flush_pins+0xdb/0x3b0 fs/bcachefs/journal_reclaim.c:839 bch2_journal_flush_all_pins fs/bcachefs/journal_reclaim.h:76 [inline] __bch2_fs_read_only+0x1b9/0x750 fs/bcachefs/super.c:277 bch2_fs_read_only+0xcb4/0x1540 fs/bcachefs/super.c:357 __bch2_fs_stop+0x112/0x6f0 fs/bcachefs/super.c:622 bch2_put_super+0x3c/0x50 fs/bcachefs/fs.c:1788 generic_shutdown_super+0x194/0x4c0 fs/super.c:641 bch2_kill_sb+0x3d/0x70 fs/bcachefs/fs.c:2012 deactivate_locked_super+0xe0/0x3f0 fs/super.c:472 deactivate_super+0x14f/0x160 fs/super.c:505 cleanup_mnt+0x6c6/0x730 fs/namespace.c:1267 __cleanup_mnt+0x22/0x30 fs/namespace.c:1274 task_work_run+0x268/0x310 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x160 kernel/entry/common.c:218 do_syscall_64+0xdc/0x1e0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: __kmalloc_large_node+0x231/0x370 mm/slub.c:3921 __do_kmalloc_node mm/slub.c:3954 [inline] __kmalloc_node+0xb07/0x1060 mm/slub.c:3973 kmalloc_node include/linux/slab.h:648 [inline] kvmalloc_node+0xc0/0x2d0 mm/util.c:634 kvmalloc include/linux/slab.h:766 [inline] btree_bounce_alloc fs/bcachefs/btree_io.c:118 [inline] bch2_btree_node_read_done+0x4e68/0x75e0 fs/bcachefs/btree_io.c:1185 btree_node_read_work+0x8a5/0x1eb0 fs/bcachefs/btree_io.c:1324 bch2_btree_node_read+0x3d42/0x4b50 __bch2_btree_root_read fs/bcachefs/btree_io.c:1748 [inline] bch2_btree_root_read+0xa6c/0x13d0 fs/bcachefs/btree_io.c:1772 read_btree_roots+0x454/0xee0 fs/bcachefs/recovery.c:457 bch2_fs_recovery+0x7adb/0x9310 fs/bcachefs/recovery.c:785 bch2_fs_start+0x7b2/0xbd0 fs/bcachefs/super.c:1043 bch2_fs_open+0x135f/0x1670 fs/bcachefs/super.c:2102 bch2_mount+0x90d/0x1d90 fs/bcachefs/fs.c:1903 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1779 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875 x64_sys_call+0x2bf4/0x3b50 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 PID: 26381 Comm: syz-executor.2 Tainted: G W 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ===================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
