kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 11539 Comm: syz-executor1 Not tainted 4.19.0-rc4-next-20180921+ #77 kobject: 'loop0' (00000000a7f8aac8): kobject_add_internal: parent: 'xfs', set: 'xfs' Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:p9_client_prepare_req.part.6+0x47c/0x940 net/9p/client.c:712 Code: ff 0f 87 fc fc ff ff e8 92 32 eb f9 0f be 85 a4 fe ff ff 4c 89 f2 48 c1 ea 03 89 85 a4 fe ff ff 48 b8 00 00 00 00 00 fc ff df <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 2b RSP: 0018:ffff88018a86f320 EFLAGS: 00010203 kobject: 'stats' (00000000d00f3373): kobject_add_internal: parent: 'loop0', set: '' RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90003e66000 RDX: 000000000000000b RSI: ffffffff87921e9e RDI: 0000000000000282 RBP: ffff88018a86f498 R08: ffff8801cc648280 R09: ffffed003b585b57 R10: ffffed003b585b57 R11: ffff8801dac2dabb R12: ffff8801c39f2ac0 R13: 0000000000000000 R14: 000000000000005e R15: 0000000000000000 FS: 00007ff16ac77700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'error' (00000000f2b8bd0c): kobject_add_internal: parent: 'loop0', set: '' CR2: 0000000000982018 CR3: 00000001bc0ee000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kobject: 'metadata' (000000009c819ba3): kobject_add_internal: parent: 'error', set: '' kobject: 'default' (000000009625f436): kobject_add_internal: parent: 'metadata', set: '' kobject: 'EIO' (00000000cc2f1550): kobject_add_internal: parent: 'metadata', set: '' kobject: 'ENOSPC' (00000000cc96a633): kobject_add_internal: parent: 'metadata', set: '' p9_client_prepare_req net/9p/client.c:744 [inline] p9_client_rpc+0x231/0x1320 net/9p/client.c:744 kobject: 'ENODEV' (0000000003ee1eec): kobject_add_internal: parent: 'metadata', set: '' XFS (loop0): Mounting V4 Filesystem XFS (loop0): totally zeroed log kobject: 'log' (00000000c9a846a6): kobject_add_internal: parent: 'loop0', set: '' p9_client_attach+0x18c/0x7b0 net/9p/client.c:1127 XFS (loop0): Metadata corruption detected at xfs_agi_verify+0x188/0x5a0 fs/xfs/libxfs/xfs_ialloc.c:2548, xfs_agi block 0x2 XFS (loop0): Unmount and run xfs_repair v9fs_session_init+0x1033/0x1bb0 fs/9p/v9fs.c:470 XFS (loop0): First 128 bytes of corrupted metadata buffer: 0000000034502453: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000a4726c6f: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ v9fs_mount+0x7c/0x8f0 fs/9p/vfs_super.c:135 00000000283f6b45: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ legacy_get_tree+0x131/0x460 fs/fs_context.c:718 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1795 00000000f29d9abe: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ do_new_mount fs/namespace.c:2648 [inline] do_mount+0x70c/0x1d90 fs/namespace.c:2974 00000000f0347a86: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0000000040f61ffc: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000e8b2d40d: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ ksys_mount+0x12d/0x140 fs/namespace.c:3190 __do_sys_mount fs/namespace.c:3204 [inline] __se_sys_mount fs/namespace.c:3201 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3201 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 000000000cbce790: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ XFS (loop0): metadata I/O error in "xfs_trans_read_buf_map" at daddr 0x2 len 1 error 117 XFS (loop0): xfs_imap_lookup: xfs_ialloc_read_agi() returned error -117, agno 0 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 XFS (loop0): Failed to read root inode 0x80, error 117 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff16ac76c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ff16ac776d4 RCX: 0000000000457679 RDX: 00000000200003c0 RSI: 0000000020000380 RDI: 0000000000000000 kobject: 'log' (00000000c9a846a6): kobject_cleanup, parent (null) RBP: 000000000072bf00 R08: 0000000020000400 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 00000000004d3b70 R14: 00000000004c2980 R15: 000000000000001e Modules linked in: kobject: 'log' (00000000c9a846a6): calling ktype release ---[ end trace c5c3d29bb4c172f3 ]--- FAT-fs (loop3): Directory bread(block 2563) failed RIP: 0010:p9_client_prepare_req.part.6+0x47c/0x940 net/9p/client.c:712 FAT-fs (loop3): Directory bread(block 2564) failed Code: ff 0f 87 fc fc ff ff e8 92 32 eb f9 0f be 85 a4 fe ff ff 4c 89 f2 48 c1 ea 03 89 85 a4 fe ff ff 48 b8 00 00 00 00 00 fc ff df <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 2b FAT-fs (loop3): Directory bread(block 2565) failed RSP: 0018:ffff88018a86f320 EFLAGS: 00010203 FAT-fs (loop3): Directory bread(block 2566) failed kobject: 'log': free name RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90003e66000 FAT-fs (loop3): Directory bread(block 2567) failed kobject: 'loop4' (000000001bda3033): kobject_uevent_env FAT-fs (loop3): Directory bread(block 2568) failed kobject: 'loop4' (000000001bda3033): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'default' (000000009625f436): kobject_cleanup, parent (null) FAT-fs (loop3): Directory bread(block 2569) failed kobject: 'default' (000000009625f436): calling ktype release FAT-fs (loop3): Directory bread(block 2570) failed kobject: 'default': free name RDX: 000000000000000b RSI: ffffffff87921e9e RDI: 0000000000000282 kobject: 'EIO' (00000000cc2f1550): kobject_cleanup, parent (null) RBP: ffff88018a86f498 R08: ffff8801cc648280 R09: ffffed003b585b57 kobject: 'EIO' (00000000cc2f1550): calling ktype release FAT-fs (loop3): Directory bread(block 2571) failed kobject: 'EIO': free name R10: ffffed003b585b57 R11: ffff8801dac2dabb R12: ffff8801c39f2ac0 kobject: 'ENOSPC' (00000000cc96a633): kobject_cleanup, parent (null) FAT-fs (loop4): invalid media value (0x00) kobject: 'ENOSPC' (00000000cc96a633): calling ktype release FAT-fs (loop3): Directory bread(block 2572) failed kobject: 'ENOSPC': free name FAT-fs (loop4): Can't find a valid FAT filesystem kobject: 'ENODEV' (0000000003ee1eec): kobject_cleanup, parent (null) R13: 0000000000000000 R14: 000000000000005e R15: 0000000000000000 kobject: 'ENODEV' (0000000003ee1eec): calling ktype release FS: 00007ff16ac77700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 kobject: 'ENODEV': free name kobject: 'loop3' (00000000969e2dba): kobject_uevent_env kobject: 'metadata' (000000009c819ba3): kobject_cleanup, parent (null) CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 kobject: 'metadata' (000000009c819ba3): calling ktype release CR2: 00000000004edbb8 CR3: 00000001bc0ee000 CR4: 00000000001406f0 kobject: 'metadata': free name kobject: 'loop3' (00000000969e2dba): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'error' (00000000f2b8bd0c): kobject_cleanup, parent (null) DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 kobject: 'error' (00000000f2b8bd0c): calling ktype release kobject: 'loop4' (000000001bda3033): kobject_uevent_env kobject: 'error': free name kobject: 'loop4' (000000001bda3033): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'stats' (00000000d00f3373): kobject_cleanup, parent (null) DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 kobject: 'stats' (00000000d00f3373): calling ktype release