EXT4-fs (loop5): mounted filesystem without journal. Opts: usrquota,,errors=continue NFQUEUE: number of total queues is 0 xt_addrtype: ipv6 PROHIBIT (THROW, NAT ..) matching not supported F2FS-fs (loop1): Found nat_bits in checkpoint ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:376 [inline] BUG: KASAN: slab-out-of-bounds in pdu_read+0x94/0x100 net/9p/protocol.c:64 Read of size 32838 at addr ffff888046811f6d by task syz-executor.5/5971 CPU: 1 PID: 5971 Comm: syz-executor.5 Not tainted 4.14.228-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351 kasan_report+0x6f/0x80 mm/kasan/report.c:409 memcpy+0x20/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:376 [inline] pdu_read+0x94/0x100 net/9p/protocol.c:64 p9pdu_vreadf net/9p/protocol.c:167 [inline] p9pdu_readf+0x381/0x1970 net/9p/protocol.c:540 p9_client_version net/9p/client.c:990 [inline] p9_client_create+0x9b2/0x12c0 net/9p/client.c:1088 v9fs_session_init+0x1c5/0x1540 fs/9p/v9fs.c:422 v9fs_mount+0x73/0x860 fs/9p/vfs_super.c:135 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007fbbf21e3188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000466459 RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00000000004bf9fb R08: 0000000020000140 R09: 0000000000000000 R10: 0000000000200000 R11: 0000000000000246 R12: 000000000056c008 R13: 00007ffcca35abcf R14: 00007fbbf21e3300 R15: 0000000000022000 Allocated by task 5971: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551 __do_kmalloc mm/slab.c:3720 [inline] __kmalloc+0x15a/0x400 mm/slab.c:3729 kmalloc include/linux/slab.h:493 [inline] p9_fcall_alloc+0x19/0x90 net/9p/client.c:242 p9_tag_alloc net/9p/client.c:312 [inline] p9_client_prepare_req.part.0+0x7f8/0xb60 net/9p/client.c:728 p9_client_prepare_req net/9p/client.c:718 [inline] p9_client_rpc+0x170/0x1520 net/9p/client.c:763 p9_client_version net/9p/client.c:980 [inline] p9_client_create+0x92f/0x12c0 net/9p/client.c:1088 v9fs_session_init+0x1c5/0x1540 fs/9p/v9fs.c:422 v9fs_mount+0x73/0x860 fs/9p/vfs_super.c:135 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb Freed by task 5075: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524 __cache_free mm/slab.c:3496 [inline] kfree+0xc9/0x250 mm/slab.c:3815 destroy_discard_cmd_control fs/f2fs/segment.c:1612 [inline] destroy_segment_manager+0x191/0xb50 fs/f2fs/segment.c:3680 f2fs_fill_super+0x3491/0x56a0 fs/f2fs/super.c:2739 mount_bdev+0x2b3/0x360 fs/super.c:1134 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb The buggy address belongs to the object at ffff888046811f40 which belongs to the cache kmalloc-16384 of size 16384 The buggy address is located 45 bytes inside of 16384-byte region [ffff888046811f40, ffff888046815f40) The buggy address belongs to the page: page:ffffea00011a0400 count:1 mapcount:0 mapping:ffff888046811f40 index:0x0 compound_mapcount: 0 flags: 0xfff00000008100(slab|head) raw: 00fff00000008100 ffff888046811f40 0000000000000000 0000000100000001 raw: ffffea0001241a20 ffffea0001019a20 ffff88813fe08200 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff888046813e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888046813e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888046813f00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc ^ ffff888046813f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888046814000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== audit: type=1804 audit(1617685991.880:70): pid=5853 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir399135011/syzkaller.knCLkj/946/file0" dev="sda1" ino=14913 res=1 F2FS-fs (loop3): invalid crc value F2FS-fs (loop3): invalid crc value NFQUEUE: number of total queues is 0 F2FS-fs (loop3): Failed to get valid F2FS checkpoint xt_addrtype: ipv6 PROHIBIT (THROW, NAT ..) matching not supported F2FS-fs (loop1): sanity_check_inode: corrupted inode i_blocks i_ino=3 iblocks=0, run fsck to fix. F2FS-fs (loop3): Insane cp_payload (771751936 > 510) audit: type=1804 audit(1617685991.920:71): pid=5853 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="open_writers" comm="syz-executor.5" name="/root/syzkaller-testdir399135011/syzkaller.knCLkj/946/file0" dev="sda1" ino=14913 res=1 NFQUEUE: number of total queues is 0 xt_addrtype: ipv6 PROHIBIT (THROW, NAT ..) matching not supported audit: type=1804 audit(1617685991.920:72): pid=5853 uid=0 auid=4294967295 ses=4294967295 op="invalid_pcr" cause="ToMToU" comm="syz-executor.5" name="/root/syzkaller-testdir399135011/syzkaller.knCLkj/946/file0" dev="sda1" ino=14913 res=1