| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <68a6c1b6.050a0220.3d78fd.001b.GAE@google.com> Date: Wed, 20 Aug 2025 23:50:30 -0700 From: syzbot <syzbot+a3a4e5eee651210c6887@...kaller.appspotmail.com> To: agruenba@...hat.com, gfs2@...ts.linux.dev, linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com Subject: [syzbot] [gfs2?] general protection fault in __gfs2_trans_begin Hello, syzbot found the following issue on: HEAD commit: 5303936d609e Add linux-next specific files for 20250820 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=11a957a2580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4602df3fd8f406ec dashboard link: https://syzkaller.appspot.com/bug?extid=a3a4e5eee651210c6887 compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11718fa2580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=165f16f0580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/57c3527e418a/disk-5303936d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7f1e146ea30f/vmlinux-5303936d.xz kernel image: https://storage.googleapis.com/syzbot-assets/55bebb5dd947/bzImage-5303936d.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/b60fdd2027e2/mount_0.gz fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=12a1d442580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a3a4e5eee651210c6887@...kaller.appspotmail.com Oops: general protection fault, probably for non-canonical address 0xdffffc0000000011: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000088-0x000000000000008f] CPU: 0 UID: 0 PID: 96 Comm: kworker/0:1H Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: gfs2-glock/syz:syz glock_work_func RIP: 0010:__gfs2_trans_begin+0x3a6/0x890 fs/gfs2/trans.c:73 Code: 09 00 00 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 bb 1b 25 fe 41 bf 8c 00 00 00 4d 03 7d 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 03 04 00 00 45 8b 3f 89 df 44 89 fe e8 RSP: 0018:ffffc900025e76c0 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000004 RCX: ffff88801e361e00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffc900025e7878 RBP: ffffc900025e77b0 R08: ffff8880580780af R09: 1ffff1100b00f015 R10: dffffc0000000000 R11: ffffed100b00f016 R12: dffffc0000000000 R13: ffff888058078998 R14: ffffc900025e7800 R15: 000000000000008c FS: 0000000000000000(0000) GS:ffff888125a05000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f97a2c23f98 CR3: 000000003368e000 CR4: 00000000003526f0 Call Trace: <TASK> gfs2_ail_empty_gl+0x12b/0x2f0 fs/gfs2/glops.c:130 inode_go_sync+0x462/0x5d0 fs/gfs2/glops.c:336 do_xmote+0x322/0x1060 fs/gfs2/glock.c:704 glock_work_func+0x2a8/0x580 fs/gfs2/glock.c:1080 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__gfs2_trans_begin+0x3a6/0x890 fs/gfs2/trans.c:73 Code: 09 00 00 4c 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 bb 1b 25 fe 41 bf 8c 00 00 00 4d 03 7d 00 4c 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 03 04 00 00 45 8b 3f 89 df 44 89 fe e8 RSP: 0018:ffffc900025e76c0 EFLAGS: 00010207 RAX: 0000000000000011 RBX: 0000000000000004 RCX: ffff88801e361e00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffffc900025e7878 RBP: ffffc900025e77b0 R08: ffff8880580780af R09: 1ffff1100b00f015 R10: dffffc0000000000 R11: ffffed100b00f016 R12: dffffc0000000000 R13: ffff888058078998 R14: ffffc900025e7800 R15: 000000000000008c FS: 0000000000000000(0000) GS:ffff888125a05000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f97a2c23f98 CR3: 000000007c81c000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 09 00 or %eax,(%rax) 2: 00 4c 89 e8 add %cl,-0x18(%rcx,%rcx,4) 6: 48 c1 e8 03 shr $0x3,%rax a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) f: 74 08 je 0x19 11: 4c 89 ef mov %r13,%rdi 14: e8 bb 1b 25 fe call 0xfe251bd4 19: 41 bf 8c 00 00 00 mov $0x8c,%r15d 1f: 4d 03 7d 00 add 0x0(%r13),%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 0f 85 03 04 00 00 jne 0x43a 37: 45 8b 3f mov (%r15),%r15d 3a: 89 df mov %ebx,%edi 3c: 44 89 fe mov %r15d,%esi 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@...glegroups.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
Powered by blists - more mailing lists