From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f77.google.com (mail-io1-f77.google.com [209.85.166.77]) (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 254E355C29 for ; Tue, 21 May 2024 09:11:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.77 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716282695; cv=none; b=LX1ba1Vgm2iTmnWFDDXarkBsleorU1PlMTdur4uiONVVm5FqDfsNmZqSDUQ9x+vwzYAolmiLyiSNdPenF1vBQ4Pi54v+1S7n2ilpucoo9mLSc7o7wGoEt90Oq+DTRydG+FheXpf1J7ObcqyNvr2pMHOdfWkZK802FYk9v8BACWo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716282695; c=relaxed/simple; bh=jgnQ6wmaKHbNvEHwOVfj9VogqXVupxEKa3YmTs+ZCg0=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=aikis5S5Du5jVTA9bmxKqOh4/t9VeoryWqKF+KlMdbu6oFaQ+j7wkIXk10JMx9QIoHc4+YZOxBcgZEIU5Blg2Dd3KLOzmk9lbIYT+jftWdyadtPOwyQatukPBMlbpo5cB7CZF46GxyJOudqOm2At/d7ZSQu8jWRnzlATnM2d+xw= 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=209.85.166.77 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-io1-f77.google.com with SMTP id ca18e2360f4ac-7deb999eea4so1289204239f.3 for ; Tue, 21 May 2024 02:11:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716282693; x=1716887493; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=QvGKGmO6+ntYMSuVfjxXLrTW9b/7sOga0PuNigSgnJM=; b=Jw47R88UmlnYs2b74NCCaPtGSqk3ulCZNl+5OY+5Zx2ky3XrxcWgGqMidFemojg9/n u/vX+jGz4ASMvUIwJ1EiSUiVie6BqsXEJ2eqLvnm9VcoTKDuVIQ10jBkfddZz1Hzk01L RgI/YXt6rsPcE/wqTHNcgs1TuFNOjaW7yCqwRS3WJMuLHoStjRVIWswhv6nxt+d7v8Yv bmHVquKTK5koG2NfpGDwMxQP39aWr3c9lwGnbJcmGZa3nftBDSaBiRz925Hx+sLNKvrG 9BgUdT7RtpJjcMl1yalRJWEZLYjNRN652/7RB4BVw6V/bSRNTPLLlLgOT6dOXnmTa4CJ ku5w== X-Forwarded-Encrypted: i=1; AJvYcCVDdPBWqT06ebLIGsMTZqt5d0qVYBeD9bRVrsRQO9ATN4P0qUN9UhWsJC3HsQTdrVAtWXhwzqLihYr5r4M1io1fkUvPaca+tnSkpbrX X-Gm-Message-State: AOJu0YxU5A8B1BR+c4i4MBZRiPaQ3FKxRFwRe+pNoJs1Taj+7vFpetFR chMspbxEAzGldcDW/kDSDUPIsp4vmrU9aLIaSLz2BWflls/o3des8IjrFZJtlNiDavV0G/+1P3c oOh3zqnUD2kwGwNvvn0L3w6kt41xyb9a/HqCCrDvSt3XhqvjzRUNChQ8= X-Google-Smtp-Source: AGHT+IFgTr/QCPjlKxXGwDpQT1Qxa/hNTo/rOBj/5t3EY+94YVMSGE3DIpRGbF2KSJvDhVCyDJS4G7Y7mY9ezKRNXjURotM4YKJO Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6602:2c0f:b0:7de:a1dc:bf36 with SMTP id ca18e2360f4ac-7e1b521c4dcmr142055039f.4.1716282693207; Tue, 21 May 2024 02:11:33 -0700 (PDT) Date: Tue, 21 May 2024 02:11:33 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000435c360618f334d0@google.com> Subject: [syzbot] [kernel?] general protection fault in srcu_invoke_callbacks From: syzbot To: bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, linux-kernel@vger.kernel.org, mingo@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: eb6a9339efeb Merge tag 'mm-nonmm-stable-2024-05-19-11-56' .. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1276c97c980000 kernel config: https://syzkaller.appspot.com/x/.config?x=e2ea586e11acd6ec dashboard link: https://syzkaller.appspot.com/bug?extid=dfe85a6b612e19d45a07 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-eb6a9339.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/21782c1528d1/vmlinux-eb6a9339.xz kernel image: https://storage.googleapis.com/syzbot-assets/6c377678e8b1/bzImage-eb6a9339.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+dfe85a6b612e19d45a07@syzkaller.appspotmail.com Oops: general protection fault, probably for non-canonical address 0xdffffc0000000030: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000180-0x0000000000000187] CPU: 0 PID: 5282 Comm: kworker/0:4 Not tainted 6.9.0-syzkaller-09699-geb6a9339efeb #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: rcu_gp srcu_invoke_callbacks RIP: 0010:rcu_seq_current kernel/rcu/rcu.h:138 [inline] RIP: 0010:srcu_invoke_callbacks+0x158/0x490 kernel/rcu/srcutree.c:1732 Code: 48 c1 ea 03 80 3c 02 00 0f 85 02 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 38 48 8d bb 80 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 02 00 00 48 8b b3 80 01 00 00 48 8d 85 20 ff RSP: 0018:ffffc90003c17bf8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff816d1bfd RDX: 0000000000000030 RSI: 0000000000000004 RDI: 0000000000000180 RBP: ffffe8ffad054220 R08: 0000000000000001 R09: fffff52000782f71 R10: 0000000000000003 R11: 0000000000000002 R12: 1ffff92000782f83 R13: ffffe8ffad054140 R14: ffffc90003c17c38 R15: ffffc90003c17d80 FS: 0000000000000000(0000) GS:ffff88802c000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc3fbc5ffc9 CR3: 0000000053e80000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x958/0x1ad0 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:rcu_seq_current kernel/rcu/rcu.h:138 [inline] RIP: 0010:srcu_invoke_callbacks+0x158/0x490 kernel/rcu/srcutree.c:1732 Code: 48 c1 ea 03 80 3c 02 00 0f 85 02 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 5b 38 48 8d bb 80 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 02 00 00 48 8b b3 80 01 00 00 48 8d 85 20 ff RSP: 0018:ffffc90003c17bf8 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff816d1bfd RDX: 0000000000000030 RSI: 0000000000000004 RDI: 0000000000000180 RBP: ffffe8ffad054220 R08: 0000000000000001 R09: fffff52000782f71 R10: 0000000000000003 R11: 0000000000000002 R12: 1ffff92000782f83 R13: ffffe8ffad054140 R14: ffffc90003c17c38 R15: ffffc90003c17d80 FS: 0000000000000000(0000) GS:ffff88802c000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc3fbc5ffc9 CR3: 0000000053e80000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 02 03 00 00 jne 0x310 e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 48 8b 5b 38 mov 0x38(%rbx),%rbx 1c: 48 8d bb 80 01 00 00 lea 0x180(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 d2 02 00 00 jne 0x306 34: 48 8b b3 80 01 00 00 mov 0x180(%rbx),%rsi 3b: 48 rex.W 3c: 8d .byte 0x8d 3d: 85 20 test %esp,(%rax) 3f: ff .byte 0xff --- 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