From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (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 9EB9246B8 for ; Sat, 3 May 2025 07:10:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746256205; cv=none; b=LfplOuIuJfZD/fQLswLhW+Na9YQaQwosT70lihXV/KkstQVTIfwSSA/SzZP8364SGAqzfEs0OgT0nKKxyFk9BTPZ1A51L3tOTMVm8qzfTign1H3yyWZjeH58hhwJUNey3NrSXlnWkO5XlKokyUpNQKvmOPS0SrcooKTQvofNf9k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746256205; c=relaxed/simple; bh=Tjd3qlzfN1pyYw9U0UC81AGMC57EcEBEsh/GOc+z5pU=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=XdFTXM9xi0ytRKfXkPQG02nqoTDpaIqXAusuUCDsDJRGZnF5gW3ce9F0RpQjwqNuxKS/5M/8QdX7rCdy8RTRRh9GnWFrlCv3qd8On14c0xj9LzKqFG6TMPyCZ1LsRzcpVRmFyMHPWJ/CRU0kY9uoE57Z64kNpv5Y5GLk7bxIY4s= 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=209.85.166.198 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-il1-f198.google.com with SMTP id e9e14a558f8ab-3d8a9b1c84eso37040865ab.2 for ; Sat, 03 May 2025 00:10:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1746256202; x=1746861002; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=K4NDqDWuCurJ/GrnBBjQopOxynYgpnhBCpcbU3adDSU=; b=ucAJGRmJ8Zieh8yl93VVzifAGS/1vDmFUjODo/6VhuEEVcySOJmaMgq3Q1JP7JS5M/ iVYYztl9JGjvFsgJZ820yxerCDjLHvJjNaWw8D0IGJe6bR9Fy2whB4T7Ag8ydCpkd6gA 991wpKKHqIfRrO1LhxKP4Lt6RJ6jcplrx3zpxUw3vJPhqXG2g5pIFCVztMcKzMGemOj0 0F3DLO90hvWQxJILCAeSxZv5jrEaI1lFudx1IWzVJazNwhNlVhIhZ7asD94/pRvmv6Zk W2n6OWjaebuci7+OmdSPf26f8Lzxv6u6q06GuVdi+HGPN0nJZFHBQg953MXrnSb88/1N NgKw== X-Forwarded-Encrypted: i=1; AJvYcCVCw4gFoQOx4TWFKPsa7bbMUQOg8/al9hWdmiyyyLKRLt93q57qRNwK02AGMz/kf7kDpwV22czI0KVVwPE=@vger.kernel.org X-Gm-Message-State: AOJu0YxqWGb068Qo9KyKETdJKB3QH+2bARsqYGPVmyrvNEqPdhzqvguZ tVrk3nz0blNHNSOn7YAnlhQqopk0zO2qZkfegKZvr8sSYUQqqbj6TzrfPy1pssI6Eec1q7Sx6Ud ffYgFRfbQNtkIi2BlBlN/ncYvf8+e/PTXcA3zV3mTx0tcBIUlLa4SRxI= X-Google-Smtp-Source: AGHT+IG8RnE1eK5qAb1C615hKxRjWRWs6JleYACpnGqv86TdCKmLLVzedC7t/Tqyb5dxucUVm4MM0bIUDPi+/AbE7HXcZDHJ/MqX Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:168a:b0:3d8:1d7c:e190 with SMTP id e9e14a558f8ab-3da5b271b75mr1785505ab.7.1746256202698; Sat, 03 May 2025 00:10:02 -0700 (PDT) Date: Sat, 03 May 2025 00:10:02 -0700 In-Reply-To: <20250503065556.1496-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6815c14a.050a0220.11da1b.000b.GAE@google.com> Subject: Re: [syzbot] [mm?] BUG: Bad page state in page_cache_ra_order From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: BUG: Bad page state in prep_new_page BUG: Bad page state in process syz.0.16 pfn:4be01 page does not match folio page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffffffffffffffff pfn:0x4be01 ksm flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 ffffea00012f8000 00000000ffffffff ffffffffffffffff raw: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: nonzero pincount page_owner tracks the page as allocated page last allocated via order 9, migratetype Unmovable, gfp_mask 0x152c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 6495, tgid 6495 (syz.0.16), ts 89599699971, free_ts 84897122939 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1718 prep_new_page+0x16/0xb0 mm/page_alloc.c:1726 get_page_from_freelist+0x135b/0x3800 mm/page_alloc.c:3692 __alloc_frozen_pages_noprof+0x263/0x23a0 mm/page_alloc.c:4974 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2301 alloc_pages_noprof mm/mempolicy.c:2392 [inline] folio_alloc_noprof+0x20/0x2d0 mm/mempolicy.c:2402 filemap_alloc_folio_noprof+0x3a1/0x470 mm/filemap.c:1007 ractl_alloc_folio mm/readahead.c:186 [inline] ra_alloc_folio mm/readahead.c:441 [inline] page_cache_ra_order+0x4c0/0xd00 mm/readahead.c:509 do_sync_mmap_readahead mm/filemap.c:3225 [inline] filemap_fault+0x1a5e/0x2740 mm/filemap.c:3403 __do_fault+0x10a/0x490 mm/memory.c:5098 do_shared_fault mm/memory.c:5582 [inline] do_fault mm/memory.c:5656 [inline] do_pte_missing+0x1a6/0x3fb0 mm/memory.c:4160 handle_pte_fault mm/memory.c:5997 [inline] __handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140 handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309 do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1337 handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 page last free pid 6330 tgid 6330 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1262 [inline] __free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2729 vfree+0x176/0x960 mm/vmalloc.c:3383 kcov_put kernel/kcov.c:439 [inline] kcov_put kernel/kcov.c:435 [inline] kcov_close+0x34/0x60 kernel/kcov.c:535 __fput+0x3ff/0xb70 fs/file_table.c:465 task_work_run+0x14d/0x240 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xafb/0x2c30 kernel/exit.c:953 do_group_exit+0xd3/0x2a0 kernel/exit.c:1102 get_signal+0x2673/0x26d0 kernel/signal.c:3034 arch_do_signal_or_restart+0x8f/0x7d0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f Modules linked in: CPU: 1 UID: 0 PID: 6495 Comm: syz.0.16 Not tainted 6.15.0-rc4-syzkaller-g95d3481af6dc-dirty #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 bad_page+0xb3/0x1f0 mm/page_alloc.c:505 free_tail_page_prepare+0x44f/0x5b0 mm/page_alloc.c:1000 free_pages_prepare mm/page_alloc.c:1238 [inline] __free_frozen_pages+0x96a/0xff0 mm/page_alloc.c:2729 __folio_put+0x329/0x450 mm/swap.c:112 folio_put_refs include/linux/mm.h:1600 [inline] filemap_free_folio+0x132/0x170 mm/filemap.c:235 delete_from_page_cache_batch+0x741/0x9b0 mm/filemap.c:339 truncate_inode_pages_range+0x279/0xe30 mm/truncate.c:376 kill_bdev block/bdev.c:91 [inline] blkdev_flush_mapping+0xfb/0x290 block/bdev.c:712 blkdev_put_whole+0xc4/0xf0 block/bdev.c:719 bdev_release+0x47e/0x6d0 block/bdev.c:1144 blkdev_release+0x15/0x20 block/fops.c:660 __fput+0x3ff/0xb70 fs/file_table.c:465 task_work_run+0x14d/0x240 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xafb/0x2c30 kernel/exit.c:953 do_group_exit+0xd3/0x2a0 kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1111 x64_sys_call+0x1530/0x1730 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa53558e969 Code: Unable to access opcode bytes at 0x7fa53558e93f. RSP: 002b:00007ffdfd5c04e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa53558e969 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000003 R08: 00000006fd5c05df R09: 00007fa53577d260 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa53577d260 R14: 0000000000000003 R15: 00007ffdfd5c05a0 BUG: Bad page state in process syz.0.16 pfn:4be00 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4be00 head: order:0 mapcount:0 entire_mapcount:1 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000049(locked|uptodate|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000049 dead000000000100 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 head: 00fff00000000049 dead000000000100 dead000000000122 0000000000000000 head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 head: 00fff00000000000 0000000000000000 00000000ffffffff 0000000000000000 head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set page_owner tracks the page as allocated page last allocated via order 9, migratetype Unmovable, gfp_mask 0x152c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 6495, tgid 6495 (syz.0.16), ts 89599699971, free_ts 84897115361 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1718 prep_new_page+0x16/0xb0 mm/page_alloc.c:1726 get_page_from_freelist+0x135b/0x3800 mm/page_alloc.c:3692 __alloc_frozen_pages_noprof+0x263/0x23a0 mm/page_alloc.c:4974 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2301 alloc_pages_noprof mm/mempolicy.c:2392 [inline] folio_alloc_noprof+0x20/0x2d0 mm/mempolicy.c:2402 filemap_alloc_folio_noprof+0x3a1/0x470 mm/filemap.c:1007 ractl_alloc_folio mm/readahead.c:186 [inline] ra_alloc_folio mm/readahead.c:441 [inline] page_cache_ra_order+0x4c0/0xd00 mm/readahead.c:509 do_sync_mmap_readahead mm/filemap.c:3225 [inline] filemap_fault+0x1a5e/0x2740 mm/filemap.c:3403 __do_fault+0x10a/0x490 mm/memory.c:5098 do_shared_fault mm/memory.c:5582 [inline] do_fault mm/memory.c:5656 [inline] do_pte_missing+0x1a6/0x3fb0 mm/memory.c:4160 handle_pte_fault mm/memory.c:5997 [inline] __handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140 handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309 do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1337 handle_page_fault arch/x86/mm/fault.c:1480 [inline] exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 page last free pid 6330 tgid 6330 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1262 [inline] __free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2729 vfree+0x176/0x960 mm/vmalloc.c:3383 kcov_put kernel/kcov.c:439 [inline] kcov_put kernel/kcov.c:435 [inline] kcov_close+0x34/0x60 kernel/kcov.c:535 __fput+0x3ff/0xb70 fs/file_table.c:465 task_work_run+0x14d/0x240 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xafb/0x2c30 kernel/exit.c:953 do_group_exit+0xd3/0x2a0 kernel/exit.c:1102 get_signal+0x2673/0x26d0 kernel/signal.c:3034 arch_do_signal_or_restart+0x8f/0x7d0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f Modules linked in: CPU: 0 UID: 0 PID: 6495 Comm: syz.0.16 Tainted: G B 6.15.0-rc4-syzkaller-g95d3481af6dc-dirty #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 bad_page+0xb3/0x1f0 mm/page_alloc.c:505 free_page_is_bad_report mm/page_alloc.c:938 [inline] free_page_is_bad mm/page_alloc.c:948 [inline] free_pages_prepare mm/page_alloc.c:1254 [inline] __free_frozen_pages+0x76e/0xff0 mm/page_alloc.c:2729 __folio_put+0x329/0x450 mm/swap.c:112 folio_put_refs include/linux/mm.h:1600 [inline] filemap_free_folio+0x132/0x170 mm/filemap.c:235 delete_from_page_cache_batch+0x741/0x9b0 mm/filemap.c:339 truncate_inode_pages_range+0x279/0xe30 mm/truncate.c:376 kill_bdev block/bdev.c:91 [inline] blkdev_flush_mapping+0xfb/0x290 block/bdev.c:712 blkdev_put_whole+0xc4/0xf0 block/bdev.c:719 bdev_release+0x47e/0x6d0 block/bdev.c:1144 blkdev_release+0x15/0x20 block/fops.c:660 __fput+0x3ff/0xb70 fs/file_table.c:465 task_work_run+0x14d/0x240 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xafb/0x2c30 kernel/exit.c:953 do_group_exit+0xd3/0x2a0 kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1111 x64_sys_call+0x1530/0x1730 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa53558e969 Code: Unable to access opcode bytes at 0x7fa53558e93f. RSP: 002b:00007ffdfd5c04e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa53558e969 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000003 R08: 00000006fd5c05df R09: 00007fa53577d260 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa53577d260 R14: 0000000000000003 R15: 00007ffdfd5c05a0 Tested on: commit: 95d3481a Merge tag 'spi-fix-v6.15-rc4' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=177498d4580000 kernel config: https://syzkaller.appspot.com/x/.config?x=ca17f2d2ba38f7a0 dashboard link: https://syzkaller.appspot.com/bug?extid=7b3842775c9ce6b69efc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=15719774580000