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AJvYcCVkb8nskV/57nRPJJJX7FizmTJwL89wDlOkIM6BPEGxoeVESBe+gtTp4M9CygaEAv2ayuJytGWjQR1DA1A=@vger.kernel.org X-Gm-Message-State: AOJu0YyqdLaWeNaTN+ZhHSevz8c//MsczdRJyH7DJlDNsN6esLqhBy0U w4JV63UDjaZhoamNlBB6jNbOxzqtE9KCGdkGWxsPfeQZojCv/BMjB6hM0B1SRmHKK1i1OfCHpqM pHcNWM6IpAQsjFbxqPynAMdr+WgZK98ubaSIDZ6afbmpwsCSG+r5k4qf6os8= X-Google-Smtp-Source: AGHT+IHR/XuGrIym3+iyXRhGGqkvMcaJuWz7ww1dNnqVn38OVS9Iatze8S4XZWdTuj18aQpC2SBq+yRpnLtKGzu0hrwIsH5bQ90Q Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1a84:b0:433:7b4f:f8bb with SMTP id e9e14a558f8ab-435dd0de6e2mr82529275ab.20.1764265230195; Thu, 27 Nov 2025 09:40:30 -0800 (PST) Date: Thu, 27 Nov 2025 09:40:30 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69288d0e.a70a0220.d98e3.010c.GAE@google.com> Subject: [syzbot] [gfs2?] kernel BUG in gfs2_quota_cleanup (3) From: syzbot To: agruenba@redhat.com, gfs2@lists.linux.dev, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: d724c6f85e80 Add linux-next specific files for 20251121 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=109dce92580000 kernel config: https://syzkaller.appspot.com/x/.config?x=68d11c703cf8e4a0 dashboard link: https://syzkaller.appspot.com/bug?extid=af4d53576692f8956fd6 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=178c797c580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11b03612580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0ccfc806f65a/disk-d724c6f8.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/c2ec31ffb05e/vmlinux-d724c6f8.xz kernel image: https://storage.googleapis.com/syzbot-assets/c25d9c0c1917/bzImage-d724c6f8.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/a4debf5b02b8/mount_1.gz fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=10814612580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+af4d53576692f8956fd6@syzkaller.appspotmail.com RBP: 00002000000003c0 R08: 00007fff7a4b9a50 R09: 000000000126a4b5 R10: 000000000126a4b5 R11: 0000000000000246 R12: 0000200000000340 R13: 00007fff7a4b9a10 R14: 0000000000000000 R15: 0000200000004140 gfs2: fsid=syz:syz.0: about to withdraw this file system ------------[ cut here ]------------ kernel BUG at fs/gfs2/quota.c:1520! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 1 UID: 0 PID: 6305 Comm: syz.2.77 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:gfs2_quota_cleanup+0x6ee/0x6f0 fs/gfs2/quota.c:1519 Code: ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c c2 fd ff ff 4c 89 f7 e8 82 79 21 fe e9 b5 fd ff ff e8 58 d4 54 07 e8 a3 dd ba fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 RSP: 0018:ffffc9000493fa40 EFLAGS: 00010293 RAX: ffffffff8406fbcd RBX: 0000000000000002 RCX: ffff88801e703d00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc9000493fb50 R08: ffff88807aa440af R09: 1ffff1100f548815 R10: dffffc0000000000 R11: ffffed100f548816 R12: 1ffff92000927f4c R13: ffff88802fe9d000 R14: dffffc0000000000 R15: 0000000000000000 FS: 000055557fefd500(0000) GS:ffff888125fba000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555573bca808 CR3: 0000000075f56000 CR4: 00000000003526f0 Call Trace: gfs2_make_fs_ro+0x27a/0x300 fs/gfs2/super.c:566 gfs2_reconfigure+0x6a3/0xb20 fs/gfs2/ops_fstype.c:1594 reconfigure_super+0x227/0x890 fs/super.c:1077 do_remount fs/namespace.c:3286 [inline] path_mount+0xd29/0xff0 fs/namespace.c:4036 do_mount fs/namespace.c:4057 [inline] __do_sys_mount fs/namespace.c:4246 [inline] __se_sys_mount+0x313/0x410 fs/namespace.c:4223 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9ca3d90eea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007fff7a4b99c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fff7a4b9a50 RCX: 00007f9ca3d90eea RDX: 00002000000003c0 RSI: 0000200000000340 RDI: 0000000000000000 RBP: 00002000000003c0 R08: 00007fff7a4b9a50 R09: 000000000126a4b5 R10: 000000000126a4b5 R11: 0000000000000246 R12: 0000200000000340 R13: 00007fff7a4b9a10 R14: 0000000000000000 R15: 0000200000004140 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:gfs2_quota_cleanup+0x6ee/0x6f0 fs/gfs2/quota.c:1519 Code: ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c c2 fd ff ff 4c 89 f7 e8 82 79 21 fe e9 b5 fd ff ff e8 58 d4 54 07 e8 a3 dd ba fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 RSP: 0018:ffffc9000493fa40 EFLAGS: 00010293 RAX: ffffffff8406fbcd RBX: 0000000000000002 RCX: ffff88801e703d00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc9000493fb50 R08: ffff88807aa440af R09: 1ffff1100f548815 R10: dffffc0000000000 R11: ffffed100f548816 R12: 1ffff92000927f4c R13: ffff88802fe9d000 R14: dffffc0000000000 R15: 0000000000000000 FS: 000055557fefd500(0000) GS:ffff888125eba000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8a64ae2000 CR3: 0000000075f56000 CR4: 00000000003526f0 --- 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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