Hello, syzbot found the following issue on: HEAD commit: a73466257270 Add linux-next specific files for 20230801 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=17a48e75a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=8b55cb25bac8948c dashboard link: https://syzkaller.appspot.com/bug?extid=57e590d90f42e6e925df compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1263b929a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=160bbe31a80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/d893efe5006c/disk-a7346625.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/5a2ea2e3ba30/vmlinux-a7346625.xz kernel image: https://storage.googleapis.com/syzbot-assets/66f8ff91348f/bzImage-a7346625.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/e94e695a9f21/mount_0.gz The issue was bisected to: commit 8f18190e31734e434a650d3435da072f03fe485f Author: Andreas Gruenbacher <agruenba@xxxxxxxxxx> Date: Wed Jul 26 21:17:53 2023 +0000 gfs2: Use mapping->gfp_mask for metadata inodes bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1338d136a80000 final oops: https://syzkaller.appspot.com/x/report.txt?x=10b8d136a80000 console output: https://syzkaller.appspot.com/x/log.txt?x=1738d136a80000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+57e590d90f42e6e925df@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: 8f18190e3173 ("gfs2: Use mapping->gfp_mask for metadata inodes") gfs2: fsid=no�Šar?d: Trying to join cluster "lock_nolock", "no�Šar?d" gfs2: fsid=no�Šar?d: Now mounting FS (format 1801)... syz-executor418: attempt to access beyond end of device loop0: rw=12288, sector=131072, nr_sectors = 8 limit=32768 general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 1 PID: 5032 Comm: syz-executor418 Not tainted 6.5.0-rc4-next-20230801-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:gfs2_lookup_simple+0xc6/0x160 fs/gfs2/inode.c:286 Code: 74 24 20 f7 d0 89 44 24 20 e8 66 d3 ff ff 48 85 c0 0f 84 85 00 00 00 48 89 c3 e8 e5 01 e3 fd 48 8d 7b 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 75 7b 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 30 49 RSP: 0018:ffffc900039ef848 EFLAGS: 00010206 RAX: 0000000000000005 RBX: fffffffffffffffb RCX: 0000000000000000 RDX: ffff888015bf8000 RSI: ffffffff83a38d4b RDI: 000000000000002b RBP: 1ffff9200073df09 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000 R13: ffffffff8ab99700 R14: ffff888019f94000 R15: ffff8880783f06b8 FS: 00005555558fa380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557976244798 CR3: 0000000074978000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> init_journal fs/gfs2/ops_fstype.c:742 [inline] init_inodes+0x495/0x2e30 fs/gfs2/ops_fstype.c:885 gfs2_fill_super+0x1a9e/0x2b10 fs/gfs2/ops_fstype.c:1248 get_tree_bdev+0x390/0x6a0 fs/super.c:1345 gfs2_get_tree+0x4e/0x280 fs/gfs2/ops_fstype.c:1333 vfs_get_tree+0x88/0x350 fs/super.c:1521 do_new_mount fs/namespace.c:3335 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6d772a2c3a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff3af18918 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fff3af18920 RCX: 00007f6d772a2c3a RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007fff3af18920 RBP: 0000000000000004 R08: 00007fff3af18960 R09: 00000000000125fe R10: 0000000000000819 R11: 0000000000000282 R12: 00007fff3af18960 R13: 0000000000000003 R14: 0000000001000000 R15: 0000000000000001 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:gfs2_lookup_simple+0xc6/0x160 fs/gfs2/inode.c:286 Code: 74 24 20 f7 d0 89 44 24 20 e8 66 d3 ff ff 48 85 c0 0f 84 85 00 00 00 48 89 c3 e8 e5 01 e3 fd 48 8d 7b 30 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 75 7b 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 30 49 RSP: 0018:ffffc900039ef848 EFLAGS: 00010206 RAX: 0000000000000005 RBX: fffffffffffffffb RCX: 0000000000000000 RDX: ffff888015bf8000 RSI: ffffffff83a38d4b RDI: 000000000000002b RBP: 1ffff9200073df09 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000 R13: ffffffff8ab99700 R14: ffff888019f94000 R15: ffff8880783f06b8 FS: 00005555558fa380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564e741eb538 CR3: 0000000074978000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 74 24 je 0x26 2: 20 f7 and %dh,%bh 4: d0 89 44 24 20 e8 rorb -0x17dfdbbc(%rcx) a: 66 d3 ff sar %cl,%di d: ff 48 85 decl -0x7b(%rax) 10: c0 0f 84 rorb $0x84,(%rdi) 13: 85 00 test %eax,(%rax) 15: 00 00 add %al,(%rax) 17: 48 89 c3 mov %rax,%rbx 1a: e8 e5 01 e3 fd call 0xfde30204 1f: 48 8d 7b 30 lea 0x30(%rbx),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 75 7b jne 0xac 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 4c 8b 63 30 mov 0x30(%rbx),%r12 3f: 49 rex.WB --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the bug is already fixed, 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 change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
