From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f77.google.com (mail-oa1-f77.google.com [209.85.160.77]) (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 D75FE43C7C2 for ; Thu, 30 Jul 2026 14:04:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785420273; cv=none; b=q4UCgUlph8EAh3tRYaO4+AcOnvF0mDhx6p0t/5M50yhu++pg6g/a4vwPtCviQ8KyEP+KZ2ag8ZX6JfAYaS7Rt4MyaIPlVHHfPUivKMuxXeiIAveIleQZUpbfQ1vBpO8F4AIFZMEWZb+2gvwInYYIi8B96y9q6DiEpWZs+ccjgFQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785420273; c=relaxed/simple; bh=uFhwgS2vLQEmm4lBKzXFfa4rECzUW1SHhbCizBlG4TQ=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=EDUPGKKOfZ6dXbgPrXbD93iy2GovboFWN0r+DkQLQ7AIV+GDYIN2oZ5YQWo5WwlS0MRU6g+fMOAYHP+SoMBUXsf1GHncPuBIzkLMBCbWX9175bk6M5mrnjz5Uln8GPY73WQ6V7bw/5ohic/HHSXDitllpUnpD0M6zA4BzDtAWdw= 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=209.85.160.77 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-oa1-f77.google.com with SMTP id 586e51a60fabf-4412c255fd4so958296fac.3 for ; Thu, 30 Jul 2026 07:04:30 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1785420269; x=1786025069; h=content-type:to:from:subject:message-id:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=1+OaPrjgQyiPhwmLW40a+vLrhbjAPIk0/p/m0HGMDaI=; b=qSWOSShMACsXC7xQvMCeo/H+U8iOHm5JZ2ibLWTPtvZtJ6782NXDhtbF4IfiRL/70c PuofoDFT7pSqIVlGMLq5SSNFQLoszOIoo7Hg79V7oKFjDk9WV45LmjAoq8Vje0hAfvDp qN3iLvzvA+45skUCKkCD+iZeW5kUvshgp7iP1Vbn3bD6n7T/SBdK3KdhRMiO2fk/myhk 1+Z3qgif2WGiqMbwEgjf5/EAX4N64YCdLiwGEzaAIEcpezoNfeexdESrP1K1MORXGwdg QFG1LaGHQCAQjOAwIPdX7AXvkvuCMqb3VCykMF7OyzWQDNq9RJ+K/uHmUvxp4mi34nCa 0Jtw== X-Forwarded-Encrypted: i=1; AHgh+RpAgcCMAwp7fHEVBeGBC9RGOjX/RQw9iZ9SAPQDlwzfDcbtSzQFQlHla7OmDzfq39l6lr6pIvNIa+HZ2K0=@vger.kernel.org X-Gm-Message-State: AOJu0YzwrPZPN8vAUKd6XCbkfBMdmwzC4IzOCJ+yWAjvXc/ieFqdkA1s tJJwFJMWomlAPROiCRge/WX/jHRINiv2mNArfmFEe1apwAplwfj7FTAy1YQeLwRgSePi5rHKBZS hRXqqbLqJs6woqn/tDUQhQmhtHPDw247C7GoasKaTQ5MtuUySbq+dX+BnchY= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6871:b22:b0:44c:b209:d716 with SMTP id 586e51a60fabf-458c19ba5ecmr1758769fac.22.1785420269144; Thu, 30 Jul 2026 07:04:29 -0700 (PDT) Date: Thu, 30 Jul 2026 07:04:29 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a6b59ed.57649fcc.360844.0019.GAE@google.com> Subject: [syzbot] [pm?] KASAN: invalid-access Read in swsusp_save From: syzbot To: lenb@kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, pavel@kernel.org, rafael@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 3b5f4b83c4ab Merge tag 'for-7.2-rc5-tag' of git://git.kern.. git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux master console output: https://syzkaller.appspot.com/x/log.txt?x=11f35632580000 kernel config: https://syzkaller.appspot.com/x/.config?x=6c49f4c107ee8924 dashboard link: https://syzkaller.appspot.com/bug?extid=461576769f21a04b4bc0 compiler: aarch64-linux-gnu-gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/fa3fbcfdac58/non_bootable_disk-3b5f4b83.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/dd359154ea98/vmlinux-3b5f4b83.xz kernel image: https://storage.googleapis.com/syzbot-assets/4ae5720d1f28/Image-3b5f4b83.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+461576769f21a04b4bc0@syzkaller.appspotmail.com printk: Suspending console(s) (use no_console_suspend to debug) Disabling non-boot CPUs ... psci: CPU1 killed (polled 0 ms) hibernate: Saved 0 MTE pages ================================================================== BUG: KASAN: invalid-access in do_copy_page kernel/power/snapshot.c:1436 [inline] BUG: KASAN: invalid-access in safe_copy_page kernel/power/snapshot.c:1457 [inline] BUG: KASAN: invalid-access in copy_data_page kernel/power/snapshot.c:1508 [inline] BUG: KASAN: invalid-access in copy_data_pages kernel/power/snapshot.c:1543 [inline] BUG: KASAN: invalid-access in swsusp_save+0x2cc/0x590 kernel/power/snapshot.c:2133 Read at addr f4f000000341f100 by task syz.1.8/3536 Pointer tag: [f4], memory tag: [fe] CPU: 0 UID: 0 PID: 3536 Comm: syz.1.8 Not tainted syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) Call trace: dump_backtrace arch/arm64/kernel/stacktrace.c:498 [inline] (C) show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x60/0x80 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x1c4/0x4b0 mm/kasan/report.c:482 kasan_report+0x84/0xac mm/kasan/report.c:595 report_tag_fault arch/arm64/mm/fault.c:368 [inline] do_tag_recovery arch/arm64/mm/fault.c:380 [inline] __do_kernel_fault+0x1b4/0x220 arch/arm64/mm/fault.c:424 do_bad_area+0x68/0x80 arch/arm64/mm/fault.c:529 do_tag_check_fault+0x34/0x44 arch/arm64/mm/fault.c:909 do_mem_abort+0x40/0x90 arch/arm64/mm/fault.c:985 el1_abort+0x44/0x64 arch/arm64/kernel/entry-common.c:322 el1h_64_sync_handler+0x50/0xac arch/arm64/kernel/entry-common.c:449 el1h_64_sync+0x6c/0x70 arch/arm64/kernel/entry.S:589 do_copy_page kernel/power/snapshot.c:1436 [inline] (P) safe_copy_page kernel/power/snapshot.c:1457 [inline] (P) copy_data_page kernel/power/snapshot.c:1508 [inline] (P) copy_data_pages kernel/power/snapshot.c:1543 [inline] (P) swsusp_save+0x2cc/0x590 kernel/power/snapshot.c:2133 (P) swsusp_arch_suspend+0x74/0x618 arch/arm64/kernel/hibernate.c:355 create_image kernel/power/hibernate.c:358 [inline] hibernation_snapshot+0x208/0x438 kernel/power/hibernate.c:442 hibernate+0x1cc/0x3c0 kernel/power/hibernate.c:811 state_store+0xe8/0xf4 kernel/power/main.c:821 kobj_attr_store+0x18/0x34 lib/kobject.c:840 sysfs_kf_write+0x7c/0x98 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x138/0x200 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x244/0x36c fs/read_write.c:687 ksys_write+0x70/0x108 fs/read_write.c:739 __do_sys_write fs/read_write.c:750 [inline] __se_sys_write fs/read_write.c:747 [inline] __arm64_sys_write+0x1c/0x30 fs/read_write.c:747 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:121 do_el0_svc+0x1c/0x34 arch/arm64/kernel/syscall.c:140 el0_svc+0x38/0x1fc arch/arm64/kernel/entry-common.c:736 el0t_64_sync_handler+0xa0/0xf0 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:594 The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x4341c head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x1ffec0000000040(head|node=0|zone=0|lastcpupid=0x7ff|kasantag=0xb) page_type: f8(unknown) raw: 01ffec0000000040 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 head: 01ffec0000000040 0000000000000000 dead000000000122 0000000000000000 head: 0000000000000000 0000000000000000 00000000f8000000 0000000000000000 head: 01ffec0000000002 ffffc1ffc00d0701 00000000ffffffff 00000000ffffffff head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004 page dumped because: kasan: bad access detected Memory state around the buggy address: fff000000341ef00: f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 fff000000341f000: f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 f4 >fff000000341f100: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ^ fff000000341f200: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fff000000341f300: fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe fe ================================================================== Enabling non-boot CPUs ... CPU1 is up PM: Cannot find swap device, try swapon -a PM: Cannot get swap writer OOM killer enabled. Restarting tasks: Starting Restarting tasks: Done PM: hibernation: hibernation exit --- 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 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