From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oi1-f206.google.com (mail-oi1-f206.google.com [209.85.167.206]) (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 F3AB01F3D56 for ; Sun, 21 Jun 2026 15:32:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.206 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782055941; cv=none; b=WDlyR9HuCvSREM5MMsAOObotuQctVCfBwafCMfZTDftKe0dU6Qv9coIitEWYYFJhyEnZ0l2X9baXPLOlDg/JrO9Fn4DOB88GXrW3O8/xRngM/3eYDpbzD5wgiETm0m/vGme94tF3eHv3KSctqkj6dYzxwDgm4p+aIpG768P73dU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782055941; c=relaxed/simple; bh=UWY45fSq+GQahqi6YQi1VT7rJ/jR7kecEQLKHhmiOEg=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=Q5HknDQVMB4i09V1VVeCmIsZHcGyfCQ/iUBN6QH/DB+K5lZsoNuZ0SAH0AEdxeHN6g09XckchgMW4UXamumbAJQnqgtH1bnEiD+X/8ZkozDK60AlITqj6KSy4HWiPqLpcEielek6NykJdYVHwHjDvNU/eqb8YEPJStktbwou52M= 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=209.85.167.206 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-oi1-f206.google.com with SMTP id 5614622812f47-48638da0e05so4278476b6e.3 for ; Sun, 21 Jun 2026 08:32:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782055939; x=1782660739; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=Pni00JRPpnnkI4q8FqMuJeiuH3tdOqeWbb8g2jz9l8E=; b=WSB8RBtjneH3lSqqFteRvWRfb2lcOsLfTjA4s1rE29tG6UKbFgtniAvRPwGf2Rien0 N9pvPQ4EmnwAxJ6zQk7SaQ4CYELpGbU18sCVbdL+rxNQ34ZiIbKirXzp7uYfsET57X26 Wys9xIw8xmbXZgwLl7RaETHMURMd7qVSPNEtSNQv+1147ppiKDNMG/kRSb0B6FHv5zwC sk5A3HFpi8YebDBDEB/st5K0k1ZJcSGfMX+EhnzWoFsYQY7N7hS/EE9nHaI03UJZGo4S BQSBIn+doB2V/iur1NGCvPdA8tZ2i4azfY1s/cb5tRl0OEJHTn7rd7v7u3yg7b6jKv9M 50uw== X-Forwarded-Encrypted: i=1; AFNElJ9r5+Qj5Eb64u4SazQ0KDCZKlVkGDkFxvpb3aauIdlh+v+lLpbIACJyMNzL1kne+c3lFafiPW2LrQFWcww=@vger.kernel.org X-Gm-Message-State: AOJu0YzIUu9QMNyOt4RlJ0sNHBz1ZLgvOC2S5MHnAEMZTMb4PGy4Am7R jAe5unoVJJzMGV/0km+N1DEVnuCqTnwkAyI5ZjEzj2zDrzTECgMhqpXV00Lgkw8QU7mW6VkFUc0 5dEoQAeut/9OZEbv3yyE1tdk2NInSSQ2ziCGnrnjqaA1SdwxsuUVyMrkza3o= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:250b:b0:487:52de:3428 with SMTP id 5614622812f47-489b0985029mr8084233b6e.24.1782055939091; Sun, 21 Jun 2026 08:32:19 -0700 (PDT) Date: Sun, 21 Jun 2026 08:32:19 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a380403.713c5d62.148f7.0008.GAE@google.com> Subject: [syzbot] [ocfs2?] general protection fault in ocfs2_evict_inode (3) From: syzbot To: jlbec@evilplan.org, joseph.qi@linux.alibaba.com, linux-kernel@vger.kernel.org, mark@fasheh.com, ocfs2-devel@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 1a3746ccbb0a Merge tag 'strncpy-removal-v7.2-rc1' of git:/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15530356580000 kernel config: https://syzkaller.appspot.com/x/.config?x=9519196b0a0d47bc dashboard link: https://syzkaller.appspot.com/bug?extid=7c566c618c9fc9fbfdca compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/d74555c02bc2/disk-1a3746cc.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/8ba08fd52fd4/vmlinux-1a3746cc.xz kernel image: https://storage.googleapis.com/syzbot-assets/daed17e06386/bzImage-1a3746cc.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7c566c618c9fc9fbfdca@syzkaller.appspotmail.com ocfs2: Unmounting device (7,5) on (node 0) Oops: general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 0 UID: 0 PID: 17613 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:ocfs2_ci_fully_checkpointed fs/ocfs2/journal.h:98 [inline] RIP: 0010:ocfs2_checkpoint_inode fs/ocfs2/journal.h:199 [inline] RIP: 0010:ocfs2_clear_inode fs/ocfs2/inode.c:1224 [inline] RIP: 0010:ocfs2_evict_inode+0x2558/0x43e0 fs/ocfs2/inode.c:1303 Code: 41 80 3c 04 00 74 08 4c 89 f7 e8 f3 08 6a fe 4d 89 f7 4d 8b 36 48 83 c3 70 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 ca 08 6a fe 48 8b 1b 48 c7 c7 c0 e8 RSP: 0018:ffffc90006c37300 EFLAGS: 00010212 RAX: 000000000000000e RBX: 0000000000000070 RCX: dffffc0000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90006c37280 RBP: ffffc90006c37a50 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000d86e50 R12: 1ffff1100a6c4485 R13: fffff52000d86e74 R14: 0000000000000000 R15: ffff888053622428 FS: 0000555569364500(0000) GS:ffff888125253000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9bcbe74368 CR3: 0000000025059000 CR4: 0000000000350ef0 Call Trace: evict+0x624/0xb50 fs/inode.c:828 __ocfs2_free_slot_info fs/ocfs2/slot_map.c:311 [inline] ocfs2_free_slot_info+0x6f/0x220 fs/ocfs2/slot_map.c:465 ocfs2_delete_osb+0x58/0x170 fs/ocfs2/super.c:2449 ocfs2_dismount_volume+0x572/0x8d0 fs/ocfs2/super.c:1883 generic_shutdown_super+0x13d/0x2d0 fs/super.c:647 kill_block_super+0x44/0x90 fs/super.c:1665 deactivate_locked_super+0xbc/0x130 fs/super.c:477 cleanup_mnt+0x3d3/0x460 fs/namespace.c:1317 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x1fa/0x730 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fafb5d9e097 Code: a2 c7 05 5c 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd855161c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fafb5e322ca RCX: 00007fafb5d9e097 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd85516280 RBP: 00007ffd85516280 R08: 00007ffd85517280 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd85517310 R13: 00007fafb5e322ca R14: 000000000011717b R15: 00007ffd85517350 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ocfs2_ci_fully_checkpointed fs/ocfs2/journal.h:98 [inline] RIP: 0010:ocfs2_checkpoint_inode fs/ocfs2/journal.h:199 [inline] RIP: 0010:ocfs2_clear_inode fs/ocfs2/inode.c:1224 [inline] RIP: 0010:ocfs2_evict_inode+0x2558/0x43e0 fs/ocfs2/inode.c:1303 Code: 41 80 3c 04 00 74 08 4c 89 f7 e8 f3 08 6a fe 4d 89 f7 4d 8b 36 48 83 c3 70 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 ca 08 6a fe 48 8b 1b 48 c7 c7 c0 e8 RSP: 0018:ffffc90006c37300 EFLAGS: 00010212 RAX: 000000000000000e RBX: 0000000000000070 RCX: dffffc0000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90006c37280 RBP: ffffc90006c37a50 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000d86e50 R12: 1ffff1100a6c4485 R13: fffff52000d86e74 R14: 0000000000000000 R15: ffff888053622428 FS: 0000555569364500(0000) GS:ffff888125253000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9bcbe74368 CR3: 0000000025059000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 41 80 3c 04 00 cmpb $0x0,(%r12,%rax,1) 5: 74 08 je 0xf 7: 4c 89 f7 mov %r14,%rdi a: e8 f3 08 6a fe call 0xfe6a0902 f: 4d 89 f7 mov %r14,%r15 12: 4d 8b 36 mov (%r14),%r14 15: 48 83 c3 70 add $0x70,%rbx 19: 48 89 d8 mov %rbx,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 ca 08 6a fe call 0xfe6a0902 38: 48 8b 1b mov (%rbx),%rbx 3b: 48 rex.W 3c: c7 .byte 0xc7 3d: c7 .byte 0xc7 3e: c0 .byte 0xc0 3f: e8 .byte 0xe8 --- 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