From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 515718664B for ; Mon, 29 Apr 2024 18:44:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714416276; cv=none; b=r1rQAUTBKeULVMpuszM8pyyUKCg8ChCIv6UfVfasFeEdmh1a+Po4FtMfrfxS6W4QUpJaHqZBqYRNAzGGz540TvC6J+NCpey4uAfAbDufMKWmlIre30ZEW1OqzwSsOf3qsV1hHrryr09RcwNo4ymgWe0ritRGIVPSVrfUiUl9YSM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1714416276; c=relaxed/simple; bh=Ksay24XfdMdh1oJjs8t7G4ZjGbUdmbT2U8vvAhXI23k=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=S0ndyzaujR3P20F9VjCYhiESkfdGmKqHhUKU42OqsGifMH/lxu02Gcn4zZamNqFPHkAigRpfaYqZMOZZXTtNluZV3enWTzqOJRMzLB8RmeBSLZ+nW/Gd/kDgbxqz51idav1W51y3lzEITKkB92qk/yfjkQqt18cEFBv3iDbbXRQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f70.google.com with SMTP id ca18e2360f4ac-7da3d17a35cso503284339f.1 for ; Mon, 29 Apr 2024 11:44:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1714416274; x=1715021074; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=baw6GOUYbCMe+M2BkS+2pAu9/rR4OT14T3ov732DzHQ=; b=IixYRL/GPney77WzzQPb0Ctr5t4ep+6HuN2QR4/c7+f5qZvsPzLrn5LLvT+GZy9U6Z UIqgSELrANudHyKHenGdiWuHdv9BilHH5QYWE9YWUT3xO4fT0ZTMoDDD7zNF7Bjk50+Y U0QakB0LAy4rUoE1DG5Mz5CnExeVx06hk2Ql24lGADB+hiyFl7lPgCKeJG6vVcqLQCZ0 YqEHdMl+nnZAp4m8nMPsoUUMuy0qDEdA2dPwCfgh5cSrB+4YUYPjpXB/woNHihQ0BKhX dM0KxLEJhHlO8Wq/OsIYphZYg2YwW2bE1Sfu6Ropw88wMs4lhGWnRRzCMMK7LJz7lN9W 1Ibg== X-Forwarded-Encrypted: i=1; AJvYcCWR46UmD169NJZStAnbsDwGyrEZBIXul51KeGno8VeTa7MCgSXA5LuvIrCIyEuishDC0g7AzLNdtAzCtOrm30ZDgUoOAN7LCE8tZYec3g== X-Gm-Message-State: AOJu0YzS7s/ixrr0cwPMlZRrWS9nqegBK55jjJziD9Yomn4qBoVCKlSc rVT9eozUpu8d316oKEdfzyTR74f/ozfx7m4QMmpVtVi+qmABP4x3ZbRaf6rxivBw0bWRmACQvKA KF+ha76HOH4KmmPVQOKhQ6E3ydZy0wCTUqbSam5qYDKtQHgClERuDTME= X-Google-Smtp-Source: AGHT+IGwVtFWIfKFDP68AljpYJAEFun9m36r0DT97dUnJvNJ4glkqIbpc/qeaE6mLt1sKw+4E96gQGZDM4ikElKT3c04q/V1l/Y9 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:870c:b0:487:666:652e with SMTP id iw12-20020a056638870c00b004870666652emr664879jab.4.1714416274484; Mon, 29 Apr 2024 11:44:34 -0700 (PDT) Date: Mon, 29 Apr 2024 11:44:34 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000009beea061740a531@google.com> Subject: [syzbot] [f2fs?] KASAN: slab-use-after-free Read in sanity_check_extent_cache From: syzbot To: chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: e67572cd2204 Linux 6.9-rc6 git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=13724f0f180000 kernel config: https://syzkaller.appspot.com/x/.config?x=d2f00edef461175 dashboard link: https://syzkaller.appspot.com/bug?extid=74ebe2104433e9dc610d 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=16938440980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13ae8517180000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/526d150815dd/disk-e67572cd.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/03cba3db92e8/vmlinux-e67572cd.xz kernel image: https://storage.googleapis.com/syzbot-assets/ec3f54fc8985/bzImage-e67572cd.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/21aa65da230a/mount_0.gz The issue was bisected to: commit a53936361330e4c55c0654605178281387d9c761 Author: Chao Yu Date: Sun Dec 10 09:20:35 2023 +0000 f2fs: delete obsolete FI_FIRST_BLOCK_WRITTEN bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11b78440980000 final oops: https://syzkaller.appspot.com/x/report.txt?x=13b78440980000 console output: https://syzkaller.appspot.com/x/log.txt?x=15b78440980000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+74ebe2104433e9dc610d@syzkaller.appspotmail.com Fixes: a53936361330 ("f2fs: delete obsolete FI_FIRST_BLOCK_WRITTEN") R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3b853316dc R13: 00007f3b852f8160 R14: 0030656c69662f2e R15: 00007ffdc8faca88 ================================================================== BUG: KASAN: slab-use-after-free in sanity_check_extent_cache+0x370/0x410 fs/f2fs/extent_cache.c:46 Read of size 4 at addr ffff8880739ab220 by task syz-executor200/5097 CPU: 0 PID: 5097 Comm: syz-executor200 Not tainted 6.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 sanity_check_extent_cache+0x370/0x410 fs/f2fs/extent_cache.c:46 do_read_inode fs/f2fs/inode.c:509 [inline] f2fs_iget+0x33e1/0x46e0 fs/f2fs/inode.c:560 f2fs_nfs_get_inode+0x74/0x100 fs/f2fs/super.c:3237 generic_fh_to_dentry+0x9f/0xf0 fs/libfs.c:1413 exportfs_decode_fh_raw+0x152/0x5f0 fs/exportfs/expfs.c:444 exportfs_decode_fh+0x3c/0x80 fs/exportfs/expfs.c:584 do_handle_to_path fs/fhandle.c:155 [inline] handle_to_path fs/fhandle.c:210 [inline] do_handle_open+0x495/0x650 fs/fhandle.c:226 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3b852ab889 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1b 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3b85239228 EFLAGS: 00000246 ORIG_RAX: 0000000000000130 RAX: ffffffffffffffda RBX: 00007f3b853316d8 RCX: 00007f3b852ab889 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007f3b853316d0 R08: 00007ffdc8faca87 R09: 00007f3b852396c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3b853316dc R13: 00007f3b852f8160 R14: 0030656c69662f2e R15: 00007ffdc8faca88 Allocated by task 5092: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3798 [inline] slab_alloc_node mm/slub.c:3845 [inline] kmem_cache_alloc+0x174/0x340 mm/slub.c:3852 f2fs_kmem_cache_alloc_nofail fs/f2fs/f2fs.h:2817 [inline] f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2827 [inline] __grab_extent_tree+0x183/0x400 fs/f2fs/extent_cache.c:334 f2fs_init_read_extent_tree+0x455/0x910 fs/f2fs/extent_cache.c:405 do_read_inode fs/f2fs/inode.c:506 [inline] f2fs_iget+0x33d1/0x46e0 fs/f2fs/inode.c:560 f2fs_nfs_get_inode+0x74/0x100 fs/f2fs/super.c:3237 generic_fh_to_dentry+0x9f/0xf0 fs/libfs.c:1413 exportfs_decode_fh_raw+0x152/0x5f0 fs/exportfs/expfs.c:444 exportfs_decode_fh+0x3c/0x80 fs/exportfs/expfs.c:584 do_handle_to_path fs/fhandle.c:155 [inline] handle_to_path fs/fhandle.c:210 [inline] do_handle_open+0x495/0x650 fs/fhandle.c:226 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 5092: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2106 [inline] slab_free mm/slub.c:4280 [inline] kmem_cache_free+0x10b/0x2c0 mm/slub.c:4344 __destroy_extent_tree+0x307/0x600 fs/f2fs/extent_cache.c:1132 f2fs_destroy_extent_tree+0x17/0x30 fs/f2fs/extent_cache.c:1143 f2fs_evict_inode+0x44d/0x1550 fs/f2fs/inode.c:831 evict+0x2a8/0x630 fs/inode.c:667 f2fs_iget+0x1a68/0x46e0 fs/f2fs/inode.c:621 f2fs_nfs_get_inode+0x74/0x100 fs/f2fs/super.c:3237 generic_fh_to_dentry+0x9f/0xf0 fs/libfs.c:1413 exportfs_decode_fh_raw+0x152/0x5f0 fs/exportfs/expfs.c:444 exportfs_decode_fh+0x3c/0x80 fs/exportfs/expfs.c:584 do_handle_to_path fs/fhandle.c:155 [inline] handle_to_path fs/fhandle.c:210 [inline] do_handle_open+0x495/0x650 fs/fhandle.c:226 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff8880739ab1a0 which belongs to the cache f2fs_extent_tree of size 144 The buggy address is located 128 bytes inside of freed 144-byte region [ffff8880739ab1a0, ffff8880739ab230) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x739ab flags: 0xfff80000000800(slab|node=0|zone=1|lastcpupid=0xfff) page_type: 0xffffffff() raw: 00fff80000000800 ffff88801afb08c0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080130013 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x12c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_RECLAIMABLE), pid 5076, tgid -326355158 (syz-executor200), ts 5083, free_ts 26740999480 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1534 prep_new_page mm/page_alloc.c:1541 [inline] get_page_from_freelist+0x3410/0x35b0 mm/page_alloc.c:3317 __alloc_pages+0x256/0x6c0 mm/page_alloc.c:4575 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page+0x5f/0x160 mm/slub.c:2175 allocate_slab mm/slub.c:2338 [inline] new_slab+0x84/0x2f0 mm/slub.c:2391 ___slab_alloc+0xc73/0x1260 mm/slub.c:3525 __slab_alloc mm/slub.c:3610 [inline] __slab_alloc_node mm/slub.c:3663 [inline] slab_alloc_node mm/slub.c:3835 [inline] kmem_cache_alloc+0x252/0x340 mm/slub.c:3852 f2fs_kmem_cache_alloc_nofail fs/f2fs/f2fs.h:2817 [inline] f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2827 [inline] __grab_extent_tree+0x183/0x400 fs/f2fs/extent_cache.c:334 f2fs_init_read_extent_tree+0x455/0x910 fs/f2fs/extent_cache.c:405 do_read_inode fs/f2fs/inode.c:506 [inline] f2fs_iget+0x33d1/0x46e0 fs/f2fs/inode.c:560 f2fs_nfs_get_inode+0x74/0x100 fs/f2fs/super.c:3237 generic_fh_to_dentry+0x9f/0xf0 fs/libfs.c:1413 exportfs_decode_fh_raw+0x152/0x5f0 fs/exportfs/expfs.c:444 exportfs_decode_fh+0x3c/0x80 fs/exportfs/expfs.c:584 do_handle_to_path fs/fhandle.c:155 [inline] handle_to_path fs/fhandle.c:210 [inline] do_handle_open+0x495/0x650 fs/fhandle.c:226 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 page last free pid 1 tgid 1 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1141 [inline] free_unref_page_prepare+0x97b/0xaa0 mm/page_alloc.c:2347 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2487 free_contig_range+0x9e/0x160 mm/page_alloc.c:6572 destroy_args+0x8a/0x890 mm/debug_vm_pgtable.c:1036 debug_vm_pgtable+0x4be/0x550 mm/debug_vm_pgtable.c:1416 do_one_initcall+0x248/0x880 init/main.c:1245 do_initcall_level+0x157/0x210 init/main.c:1307 do_initcalls+0x3f/0x80 init/main.c:1323 kernel_init_freeable+0x435/0x5d0 init/main.c:1555 kernel_init+0x1d/0x2b0 init/main.c:1444 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff8880739ab100: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff8880739ab180: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb >ffff8880739ab200: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc ^ ffff8880739ab280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880739ab300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection 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