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Thu, 06 Feb 2025 09:01:23 -0800 (PST) Date: Thu, 06 Feb 2025 09:01:23 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67a4eae3.050a0220.65602.0001.GAE@google.com> Subject: [syzbot] [mm?] [bcachefs?] KASAN: slab-use-after-free Read in list_lru_del From: syzbot To: akpm@linux-foundation.org, kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 8EBCB40016 X-Stat-Signature: ntriw51nymniiywdipp19brt9t1co81g X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1738861284-210171 X-HE-Meta: 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 v7SbBpps 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 dRFe/ojS dhVpo4nvHK529tR85eNW23Qnxd8yUn+pIah2L5LftC2l1qiMRYnBincAesVOgUsdVgDaL9h4w+SVQDzrQQEOjVdlDamgCazTRhYkdzjjKAXKkEiXQDfuSPyQSgbfG+KrIV0nHgRMT3qH1nzdgoCF9kukGpG+w3xKQiIsNI5YqfjCanmpz6b2mKJWjrfPCasCt/wZUFw4kLAsxKYTxIYYPB9dPQAyWG7K3gJkRysNEV+BRgpPNKC6icRcOyA57YkIUAAyfNNpCpCnKxi5Whcv9mVjDzTcLM7jb3N3PV75qbhCY+sXdpCSpPstBoaGW+7zNNgNHF/CJfuVkKbYcejjHwjOFYgvjBf+1XFBx+Ga0rXmehaSVowriPUyyoxdevE6wu9OGtPhAibEd5BEh6B6Xw9dZFiLaXjs X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 92514ef226f5 Merge tag 'for-6.14-rc1-tag' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=126aa4a4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1909f2f0d8e641ce dashboard link: https://syzkaller.appspot.com/bug?extid=6663075ddb9be85fa6e5 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14926df8580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-92514ef2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c4d8b91f8769/vmlinux-92514ef2.xz kernel image: https://storage.googleapis.com/syzbot-assets/c24ec4365966/bzImage-92514ef2.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/efb05b29bf18/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+6663075ddb9be85fa6e5@syzkaller.appspotmail.com slab radix_tree_node start ffff8880411d9600 pointer offset 24 size 576 list_del corruption. next->prev should be ffff88803f847358, but was 0000000008000105. (next=ffff8880411d9618) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:67! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5628 Comm: modprobe Not tainted 6.14.0-rc1-syzkaller-00034-g92514ef226f5 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__list_del_entry_valid_or_report+0x18c/0x190 lib/list_debug.c:65 Code: ba 56 15 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 7b 02 37 fd 49 8b 56 08 48 c7 c7 20 8f 60 8c 4c 89 fe 4c 89 f1 e8 65 10 38 fc 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f RSP: 0018:ffffc9000cdced10 EFLAGS: 00010046 RAX: 000000000000006d RBX: 1ffff1100823b2c4 RCX: a96f20814868f300 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff888032fbde80 R08: ffffffff819f146c R09: fffffbfff1cfa588 R10: dffffc0000000000 R11: fffffbfff1cfa588 R12: ffff8880411d9620 R13: dffffc0000000000 R14: ffff8880411d9618 R15: ffff88803f847358 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0ee1cb270 CR3: 0000000000712000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_del_init include/linux/list.h:287 [inline] list_lru_del+0x9a/0x1f0 mm/list_lru.c:206 list_lru_del_obj+0x17b/0x250 mm/list_lru.c:223 workingset_update_node+0x174/0x230 mm/workingset.c:636 xas_update lib/xarray.c:356 [inline] update_node lib/xarray.c:764 [inline] xas_store+0xb89/0x1870 lib/xarray.c:851 __filemap_add_folio+0xab1/0x1320 mm/filemap.c:925 filemap_add_folio+0x155/0x380 mm/filemap.c:981 __filemap_get_folio+0x52b/0xae0 mm/filemap.c:1980 grow_dev_folio fs/buffer.c:1039 [inline] grow_buffers fs/buffer.c:1105 [inline] __getblk_slow fs/buffer.c:1131 [inline] bdev_getblk+0x1d4/0x670 fs/buffer.c:1431 getblk_unmovable include/linux/buffer_head.h:369 [inline] ext4_getblk+0x31b/0x880 fs/ext4/inode.c:864 ext4_bread_batch+0x63/0x4e0 fs/ext4/inode.c:933 __ext4_find_entry+0xfab/0x1eb0 fs/ext4/namei.c:1627 ext4_lookup_entry fs/ext4/namei.c:1729 [inline] ext4_lookup+0x15f/0x750 fs/ext4/namei.c:1797 __lookup_slow+0x296/0x400 fs/namei.c:1793 lookup_slow+0x53/0x70 fs/namei.c:1810 walk_component fs/namei.c:2114 [inline] link_path_walk+0x99b/0xea0 fs/namei.c:2479 path_openat+0x266/0x3590 fs/namei.c:3985 do_filp_open+0x27f/0x4e0 fs/namei.c:4016 do_sys_openat2+0x13e/0x1d0 fs/open.c:1427 do_sys_open fs/open.c:1442 [inline] __do_sys_openat fs/open.c:1458 [inline] __se_sys_openat fs/open.c:1453 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1453 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff0ee472a46 Code: 10 00 00 00 44 8b 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 0c f7 d8 89 05 0a 48 01 00 48 83 c8 ff c3 31 RSP: 002b:00007ffdd50a1c28 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007ffdd50a1e88 RCX: 00007ff0ee472a46 RDX: 0000000000080000 RSI: 00007ffdd50a1ca0 RDI: 00000000ffffff9c RBP: 00007ffdd50a1c90 R08: 0000000000080000 R09: 00007ffdd50a1ca0 R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffdd50a1ca0 R13: 0000000000000000 R14: 00007ffdd50a1e6f R15: 00000000ffffffff Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x18c/0x190 lib/list_debug.c:65 Code: ba 56 15 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 7b 02 37 fd 49 8b 56 08 48 c7 c7 20 8f 60 8c 4c 89 fe 4c 89 f1 e8 65 10 38 fc 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f RSP: 0018:ffffc9000cdced10 EFLAGS: 00010046 RAX: 000000000000006d RBX: 1ffff1100823b2c4 RCX: a96f20814868f300 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff888032fbde80 R08: ffffffff819f146c R09: fffffbfff1cfa588 R10: dffffc0000000000 R11: fffffbfff1cfa588 R12: ffff8880411d9620 R13: dffffc0000000000 R14: ffff8880411d9618 R15: ffff88803f847358 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff0ee1cb270 CR3: 0000000000712000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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@googlegroups.com. 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 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 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