Hello,
syzbot found the following issue on:
HEAD commit: eb575cd5 Linux 4.19.195
git tree: linux-4.19.y
console output:
https://syzkaller.appspot.com/x/log.txt?x=12e7c1bfd00000
kernel config:
https://syzkaller.appspot.com/x/.config?x=5506475cccaff975
dashboard link:
https://syzkaller.appspot.com/bug?extid=896aba5034ce86cbb21c
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+896aba...@syzkaller.appspotmail.com
IPVS: ftp: loaded support on port[0] = 21
isofs_fill_super: root inode is not a directory. Corrupted media?
BUG: unable to handle kernel paging request at 0000070700000707
PGD 0 P4D 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6816 Comm: syz-executor.3 Not tainted 4.19.195-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:qlist_move_cache+0x67/0xd0 mm/kasan/quarantine.c:275
Code: 00 00 00 eb 22 49 83 3e 00 74 7d 49 8b 46 08 4c 89 28 4d 89 6e 08 49 c7 45 00 00 00 00 00 49 01 56 10 4d 85 ff 74 56 4d 89 fd <4d> 8b 3f 4c 89 ef e8 0e 01 93 ff 48 c1 e8 0c 48 c1 e0 06 4c 01 e0
RSP: 0018:ffff88802494fa58 EFLAGS: 00010002
RAX: ffff88803cc82a00 RBX: ffff88802494fa90 RCX: ffffea0000000f07
RDX: 0000000000001100 RSI: ffffffff812b5e9a RDI: 0000000000000007
RBP: ffff888041e25480 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000000 R12: ffffea0000000000
R13: 0000070700000707 R14: ffffffff8d259d28 R15: 0000070700000707
FS: 00007f17e07a1700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000070700000707 CR3: 00000000aec30000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
quarantine_remove_cache+0x73/0x100 mm/kasan/quarantine.c:317
shutdown_cache+0xe/0x1e0 mm/slab_common.c:570
kmem_cache_destroy+0x25a/0x2e0 mm/slab_common.c:925
p9_client_destroy+0x250/0x360 net/9p/client.c:1112
v9fs_session_close+0x45/0x2c0 fs/9p/v9fs.c:513
v9fs_kill_super+0x49/0x90 fs/9p/vfs_super.c:233
deactivate_locked_super+0x94/0x160 fs/super.c:329
v9fs_mount+0x632/0x910 fs/9p/vfs_super.c:214
mount_fs+0xa3/0x310 fs/super.c:1261
vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961
vfs_kern_mount fs/namespace.c:951 [inline]
do_new_mount fs/namespace.c:2469 [inline]
do_mount+0x113c/0x2f10 fs/namespace.c:2799
ksys_mount+0xcf/0x130 fs/namespace.c:3015
__do_sys_mount fs/namespace.c:3029 [inline]
__se_sys_mount fs/namespace.c:3026 [inline]
__x64_sys_mount+0xba/0x150 fs/namespace.c:3026
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f17e07a1188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000020000200 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00000000004bfcb9 R08: 00000000200002c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffcd3dde42f R14: 00007f17e07a1300 R15: 0000000000022000
Modules linked in:
CR2: 0000070700000707
---[ end trace e53d8c55c6688721 ]---
RIP: 0010:qlist_move_cache+0x67/0xd0 mm/kasan/quarantine.c:275
Code: 00 00 00 eb 22 49 83 3e 00 74 7d 49 8b 46 08 4c 89 28 4d 89 6e 08 49 c7 45 00 00 00 00 00 49 01 56 10 4d 85 ff 74 56 4d 89 fd <4d> 8b 3f 4c 89 ef e8 0e 01 93 ff 48 c1 e8 0c 48 c1 e0 06 4c 01 e0
RSP: 0018:ffff88802494fa58 EFLAGS: 00010002
RAX: ffff88803cc82a00 RBX: ffff88802494fa90 RCX: ffffea0000000f07
RDX: 0000000000001100 RSI: ffffffff812b5e9a RDI: 0000000000000007
RBP: ffff888041e25480 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000007 R11: 0000000000000000 R12: ffffea0000000000
R13: 0000070700000707 R14: ffffffff8d259d28 R15: 0000070700000707
FS: 00007f17e07a1700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000070700000707 CR3: 00000000aec30000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
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