FS-Cache: O-cookie c=00000000bfe1c402 [p=00000000445b4196 fl=222 nc=0 na=1] FS-Cache: O-cookie d=00000000a5eb7aa3 n=000000005d36a973 kasan: CONFIG_KASAN_INLINE enabled FS-Cache: O-key=[10] ' kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN CPU: 0 PID: 4474 Comm: syz-executor242 Not tainted 4.18.0-rc4-next-20180712+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 34 RIP: 0010:virt_to_head_page include/linux/mm.h:638 [inline] RIP: 0010:virt_to_cache mm/slab.c:399 [inline] RIP: 0010:kfree+0xa0/0x260 mm/slab.c:3809 Code: 32 82 cb 01 00 39 00 48 ba 00 00 34 00 80 ff 77 36 00 00 48 01 39 c2 48 89 df 35 48 b8 00 00 00 31 00 00 ea ff 35 ff 48 c1 ea 35 0c 48 c1 e2 ' 06 48 01 c2 <48> FS-Cache: N-cookie c=00000000525aeed3 [p=00000000445b4196 fl=2 nc=0 na=1] 8b 42 08 a8 01 FS-Cache: N-cookie d=00000000a5eb7aa3 n=000000003a05f34d 48 8d 48 ff 48 FS-Cache: N-key=[10] ' 0f 45 d1 4c 8b 34 6a 18 49 63 75 32 74 RSP: 0018:ffff8801b105f5d0 EFLAGS: 00010003 39 RAX: ffffea0000000000 RBX: f780d0382154ac00 RCX: 1ffff1003620bed8 RDX: 03ddef20e0855280 RSI: ffffffff87700e50 RDI: f780d0382154ac00 RBP: ffff8801b105f5f0 R08: ffff8801ade02380 R09: ffffed003620bdf8 34 R10: ffffed0039d876c0 R11: 0000000000000001 R12: 0000000000000282 R13: ffffffff87700e8a R14: ffff8801b105f740 R15: ffff8801ce4c0540 FS: 00007feab2d14700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 36 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f32b40b0000 CR3: 00000001c4338000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 39 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 35 p9_client_version net/9p/client.c:1010 [inline] p9_client_create+0xfea/0x1770 net/9p/client.c:1070 31 35 35 ' kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access v9fs_session_init+0x21a/0x1a80 fs/9p/v9fs.c:400 v9fs_mount+0x7c/0x900 fs/9p/vfs_super.c:135 legacy_get_tree+0x118/0x440 fs/fs_context.c:659 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1743 do_new_mount fs/namespace.c:2567 [inline] do_mount+0x6c1/0x1fb0 fs/namespace.c:2889 ksys_mount+0x12d/0x140 fs/namespace.c:3105 __do_sys_mount fs/namespace.c:3119 [inline] __se_sys_mount fs/namespace.c:3116 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3116 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x445b59 Code: e8 bc e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 2b 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007feab2d13da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000006dac3c RCX: 0000000000445b59 RDX: 0000000020000180 RSI: 0000000020000140 RDI: 0000000000000000 RBP: 00000000006dac38 R08: 0000000020000300 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0031656c69662f2e R13: 6f6c3d6568636163 R14: 64663d736e617274 R15: 0000000000000001 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace bacf24c1f955b911 ]--- general protection fault: 0000 [#2] SMP KASAN CPU: 1 PID: 4472 Comm: syz-executor242 Tainted: G D 4.18.0-rc4-next-20180712+ #6 RIP: 0010:virt_to_head_page include/linux/mm.h:638 [inline] RIP: 0010:virt_to_cache mm/slab.c:399 [inline] RIP: 0010:kfree+0xa0/0x260 mm/slab.c:3809 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Code: RIP: 0010:virt_to_head_page include/linux/mm.h:638 [inline] RIP: 0010:virt_to_cache mm/slab.c:399 [inline] RIP: 0010:kfree+0xa0/0x260 mm/slab.c:3809 82 Code: cb 82 01 cb 00 01 00 00 48 00 ba 48 00 00 ba 00 00 80 00 ff 00 77 80 00 ff 00 77 48 00 00 01 48 c2 01 48 c2 89 48 df 89 48 df b8 48 00 b8 00 00 00 00 00 00 00 00 ea 00 ff ea ff ff 48 ff c1 48 ea c1 0c ea 48 0c c1 48 e2 c1 06 e2 48 06 01 48 c2 01 <48> c2 8b <48> 42 8b 08 42 a8 08 01 a8 48 01 8d 48 48 8d ff 48 48 ff 0f 48 45 0f d1 45 4c d1 8b 4c 6a 8b 18 6a 49 18 63 49 75 63 74 75 74 RSP: 0018:ffff8801b105f5d0 EFLAGS: 00010003 RSP: 0018:ffff8801b3db75d0 EFLAGS: 00010003 RAX: ffffea0000000000 RBX: f780d0382154ac00 RCX: 1ffff1003620bed8 RDX: 03ddef20e0855280 RSI: ffffffff87700e50 RDI: f780d0382154ac00 RAX: ffffea0000000000 RBX: afd91d4db7636200 RCX: 1ffff100367b6ed8 RBP: ffff8801b105f5f0 R08: ffff8801ade02380 R09: ffffed003620bdf8 RDX: 02bf505536dd8d80 RSI: ffffffff87700e50 RDI: afd91d4db7636200 R10: ffffed0039d876c0 R11: 0000000000000001 R12: 0000000000000282 RBP: ffff8801b3db75f0 R08: ffff8801ad62a300 R09: ffffed00367b6df8 R13: ffffffff87700e8a R14: ffff8801b105f740 R15: ffff8801ce4c0540 R10: ffffed0039d876e0 R11: 0000000000000001 R12: 0000000000000282 FS: 00007feab2d14700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 R13: ffffffff87700e8a R14: ffff8801b3db7740 R15: ffff8801aa0a03c0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 FS: 00007feab2d14700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CR2: 00007f32b40b0000 CR3: 00000001c4338000 CR4: 00000000001406f0 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 CR2: 00007f32b40b0000 CR3: 00000001c0acc000 CR4: 00000000001406e0 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000