Hello, syzbot found the following issue on: HEAD commit: a785fd28d31f Merge tag 'for-6.5-rc5-tag' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=141ddd73a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=2bf8962e4f7984f4 dashboard link: https://syzkaller.appspot.com/bug?extid=f3d40299952f55df8614 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1471c04ba80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/5b766dfb84ba/disk-a785fd28.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c3ee7bb9fc27/vmlinux-a785fd28.xz kernel image: https://storage.googleapis.com/syzbot-assets/ffbde03d2df8/bzImage-a785fd28.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f3d40299952f55df8614@xxxxxxxxxxxxxxxxxxxxxxxxx BUG: memory leak unreferenced object 0xffff888131b41000 (size 40): comm "syz-executor.2", pid 17149, jiffies 4294966508 (age 33.030s) hex dump (first 32 bytes): 29 ff b6 31 81 88 ff ff 00 00 00 00 00 00 00 00 )..1............ 00 00 00 00 00 00 00 00 0b 0c 00 00 09 00 00 00 ................ backtrace: [<ffffffff81824c5a>] __es_alloc_extent fs/ext4/extents_status.c:467 [inline] [<ffffffff81824c5a>] __es_alloc_extent fs/ext4/extents_status.c:464 [inline] [<ffffffff81824c5a>] __es_insert_extent+0x28a/0x540 fs/ext4/extents_status.c:815 [<ffffffff81826ef0>] ext4_es_insert_extent+0x1e0/0x890 fs/ext4/extents_status.c:882 [<ffffffff81842145>] ext4_map_blocks+0x575/0xad0 fs/ext4/inode.c:680 [<ffffffff81842790>] _ext4_get_block+0xf0/0x1a0 fs/ext4/inode.c:763 [<ffffffff8183ead6>] ext4_block_write_begin+0x216/0x730 fs/ext4/inode.c:1043 [<ffffffff8184b4e0>] ext4_write_begin+0x2a0/0x7c0 fs/ext4/inode.c:1183 [<ffffffff8184bada>] ext4_da_write_begin+0xda/0x3c0 fs/ext4/inode.c:2867 [<ffffffff814fcf36>] generic_perform_write+0x116/0x2e0 mm/filemap.c:3923 [<ffffffff81829f20>] ext4_buffered_write_iter+0xa0/0x1a0 fs/ext4/file.c:299 [<ffffffff8182a0d2>] ext4_file_write_iter+0xb2/0xde0 fs/ext4/file.c:722 [<ffffffff81665edd>] __kernel_write_iter+0x10d/0x370 fs/read_write.c:517 [<ffffffff8173cc81>] dump_emit_page fs/coredump.c:888 [inline] [<ffffffff8173cc81>] dump_user_range+0x141/0x3a0 fs/coredump.c:915 [<ffffffff8172d344>] elf_core_dump+0x10c4/0x1570 fs/binfmt_elf.c:2142 [<ffffffff8173c4c8>] do_coredump+0x19b8/0x2030 fs/coredump.c:764 [<ffffffff812a2f92>] get_signal+0xf52/0xfb0 kernel/signal.c:2867 [<ffffffff81132f69>] arch_do_signal_or_restart+0x39/0x280 arch/x86/kernel/signal.c:308 --- 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 bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
