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 AD25C188587 for ; Tue, 24 Dec 2024 10:02:28 +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=1735034550; cv=none; b=mRt5LlnP/kV4+VapSd39CafbPPC2zw70rrkgwLnQng/6fVSnUd8im585Wqkzm76ejRN8FGnb/cHlVdIiAgE5zYYNhPW/w/QIzcpilSwaLFWPzj1RoERKIVJ5BW3tybftJD9do7ioQKVUXUqQnxw7MkPJmubdxRTRn6bfdxdSwZ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1735034550; c=relaxed/simple; bh=aHuWK6MKf+LLgBECA5b1pzv/2bxYTAY4zUOS159tAFA=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=aY7yMCjjrt0+tZNSUqiLJm8VuzTkJVY1uN0aItYo4zkHx4tZrGsBWACvGNkVBaiKRjAEz4HYHj8EiWWk2ean13I/8hvnUNsw2xqgnM8Eg4Qoag4q7oaxw88oPihwRRq9IpyVNb7GjE3eK8BlpfUKk5kBeP+5nub5DXAHb3Fh+Og= 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-844e3943987so381691239f.3 for ; Tue, 24 Dec 2024 02:02:28 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1735034547; x=1735639347; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=+R4vxQBilPncGF+5TttyzpM+4eS1NEe3RwrkfXqh800=; b=RVlTCsrV1o7EuI6eWNApF3R9XCOk9IIywCOWS1PQckWXi+vLYFJDyHj5FXf/WeoR1a nuXJzyeKtijAoGZKk9E2TQQwYClsvXgZ0u84dYLBjbys16hMgtpFcTIA5jHZBe2XbvlF aAkCV2K8UfC6MWvUqeSkqs4lko2p1PnbpTSuXiv1Xt318zyTC2gyTfyBO1/aT1BCfeEc xnHdCwGBTlSvDG2R9NC8CUp78XDCvRLZMXM+14PR9FcOv6o1Gw2E02AukpZTpQAxRGdA SWuxT4LZnsiGuPWeFnFY2AqUCJKQQcONiXe7RO4PI6VEVQ7BMrRdUVgTH5hdoMj6w4lY rSag== X-Gm-Message-State: AOJu0YxmzsnchSyq6cI2zE16PJggcFbqH/SL2mZ/0oqci3iMsDwCwnsZ rdA1cnW8O0vIJSLA0Oz+WpmhrHy0TSUQih7AFYPlxnmK9qmnwHnQLrxM6r6MChm+vlaH+AW/Abk ZQ3z42+abNid3btgWIBCZktCmWj/J176i/KF6+ZLz4mu7roJFesfVZitxGg== X-Google-Smtp-Source: AGHT+IEwX9eNI1Ypl2IssxJXu8M4CY+QgqhZVsNKWT7cNO+3tT3H10uK+HOL+vwVH7jOtk+wEghj0mOnC1gbSSOW2fm2tf+ivF8q Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:3a10:b0:3a7:e0c0:5f0d with SMTP id e9e14a558f8ab-3c2d1b9b8c6mr166785125ab.3.1735034547714; Tue, 24 Dec 2024 02:02:27 -0800 (PST) Date: Tue, 24 Dec 2024 02:02:27 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <676a86b3.050a0220.2f3838.0186.GAE@google.com> Subject: [syzbot] [kernel?] BUG: unable to handle kernel paging request in sched_mm_cid_exit_signals From: syzbot To: linux-kernel@vger.kernel.org, luto@kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 8faabc041a00 Merge tag 'net-6.13-rc4' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1181cf30580000 kernel config: https://syzkaller.appspot.com/x/.config?x=6a2b862bf4a5409f dashboard link: https://syzkaller.appspot.com/bug?extid=346663d300c952d92718 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ae9784e087ec/disk-8faabc04.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/30d1a89f3de0/vmlinux-8faabc04.xz kernel image: https://storage.googleapis.com/syzbot-assets/1b7c69b1e12a/bzImage-8faabc04.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+346663d300c952d92718@syzkaller.appspotmail.com BUG: unable to handle page fault for address: fffffbfff3f8171b #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 UID: 0 PID: 6906 Comm: syz.3.238 Not tainted 6.13.0-rc3-syzkaller-00136-g8faabc041a00 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0018:ffffc9000488f640 EFLAGS: 00010086 RAX: 000000000172ce01 RBX: 1ffffffff3f8171b RCX: ffffffff817ac184 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9fc0b8d8 RBP: ffffffffffffffff R08: ffffffff9fc0b8df R09: 1ffffffff3f8171b R10: dffffc0000000000 R11: fffffbfff3f8171b R12: ffff88802f3aa8c4 R13: ffff88802f3a9e00 R14: dffffc0000000001 R15: fffffbfff3f8171c FS: 00007feac63456c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff3f8171b CR3: 0000000034ab4000 CR4: 0000000000350ef0 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] __lock_acquire+0xc94/0x2100 kernel/locking/lockdep.c:5196 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:606 raw_spin_rq_lock kernel/sched/sched.h:1523 [inline] _raw_spin_rq_lock_irqsave kernel/sched/sched.h:1543 [inline] rq_lock_irqsave kernel/sched/sched.h:1808 [inline] class_rq_lock_irqsave_constructor kernel/sched/sched.h:1857 [inline] sched_mm_cid_exit_signals+0x17b/0x4b0 kernel/sched/core.c:10606 exit_signals+0x357/0x5c0 kernel/signal.c:3111 do_exit+0x6b4/0x28e0 kernel/exit.c:895 do_group_exit+0x207/0x2c0 kernel/exit.c:1087 get_signal+0x16b2/0x1750 kernel/signal.c:3017 arch_do_signal_or_restart+0x96/0x860 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+0xce/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7feac5585d29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007feac63450e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007feac5776088 RCX: 00007feac5585d29 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007feac5776088 RBP: 00007feac5776080 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007feac577608c R13: 0000000000000000 R14: 00007fff25f56f80 R15: 00007fff25f57068 Modules linked in: CR2: fffffbfff3f8171b ---[ end trace 0000000000000000 ]--- RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0018:ffffc9000488f640 EFLAGS: 00010086 RAX: 000000000172ce01 RBX: 1ffffffff3f8171b RCX: ffffffff817ac184 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9fc0b8d8 RBP: ffffffffffffffff R08: ffffffff9fc0b8df R09: 1ffffffff3f8171b R10: dffffc0000000000 R11: fffffbfff3f8171b R12: ffff88802f3aa8c4 R13: ffff88802f3a9e00 R14: dffffc0000000001 R15: fffffbfff3f8171c FS: 00007feac63456c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff3f8171b CR3: 0000000034ab4000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess), 7 bytes skipped: 0: df 4f 8d fisttps -0x73(%rdi) 3: 3c 31 cmp $0x31,%al 5: 4c 89 fd mov %r15,%rbp 8: 4c 29 dd sub %r11,%rbp b: 48 83 fd 10 cmp $0x10,%rbp f: 7f 29 jg 0x3a 11: 48 85 ed test %rbp,%rbp 14: 0f 84 3e 01 00 00 je 0x158 1a: 4c 89 cd mov %r9,%rbp 1d: 48 f7 d5 not %rbp 20: 48 01 dd add %rbx,%rbp * 23: 41 80 3b 00 cmpb $0x0,(%r11) <-- trapping instruction 27: 0f 85 c9 01 00 00 jne 0x1f6 2d: 49 ff c3 inc %r11 30: 48 ff c5 inc %rbp 33: 75 ee jne 0x23 35: e9 .byte 0xe9 36: 1e (bad) 37: 01 00 add %eax,(%rax) --- This report is generated by a bot. 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