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: 1 PID: 8974 Comm: syz-executor.0 Not tainted 5.2.0-rc5 #54
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_move_mount.isra.0+0x5fe/0xe10 fs/namespace.c:2602
Code: ff ff 00 0f 84 7a fb ff ff e8 de a4 b5 ff 48 8b 85 50 ff ff ff 48 8d 78 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6d 07 00 00 48 8b 85 50 ff ff ff 31 ff 4c 8b 78
RSP: 0018:ffff88808abdfd58 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88808abdfea8 RCX: 1ffff11015304a2f
RDX: 0000000000000006 RSI: ffffffff81bb1c82 RDI: 0000000000000032
RBP: ffff88808abdfe38 R08: ffff88809ac98700 R09: ffffed1015d26be0
R10: ffffed1015d26bdf R11: ffff8880ae935efb R12: ffff888096a00400
R13: ffff88821b6a0220 R14: ffff88808abdfe90 R15: ffff8880a9825160
FS:  00007f48bc3c6700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200001c0 CR3: 000000009fef8000 CR4: 00000000001406e0
Call Trace:
 __do_sys_move_mount fs/namespace.c:3524 [inline]
 __se_sys_move_mount fs/namespace.c:3483 [inline]
 __x64_sys_move_mount+0x355/0x440 fs/namespace.c:3483
 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4592c9
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f48bc3c5c78 EFLAGS: 00000246 ORIG_RAX: 00000000000001ad
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004592c9
RDX: ffffffffffffff9c RSI: 0000000020000040 RDI: 0000000000000003
RBP: 000000000075bfc8 R08: 0000000000000066 R09: 0000000000000000
R10: 0000000020000100 R11: 0000000000000246 R12: 00007f48bc3c66d4
R13: 00000000004c5706 R14: 00000000004d9ba8 R15: 00000000ffffffff
Modules linked in:
---[ end trace a18b4eeb5a5a705e ]---
RIP: 0010:do_move_mount.isra.0+0x5fe/0xe10 fs/namespace.c:2602
Code: ff ff 00 0f 84 7a fb ff ff e8 de a4 b5 ff 48 8b 85 50 ff ff ff 48 8d 78 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 6d 07 00 00 48 8b 85 50 ff ff ff 31 ff 4c 8b 78
RSP: 0018:ffff88808abdfd58 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff88808abdfea8 RCX: 1ffff11015304a2f
RDX: 0000000000000006 RSI: ffffffff81bb1c82 RDI: 0000000000000032
RBP: ffff88808abdfe38 R08: ffff88809ac98700 R09: ffffed1015d26be0
R10: ffffed1015d26bdf R11: ffff8880ae935efb R12: ffff888096a00400
R13: ffff88821b6a0220 R14: ffff88808abdfe90 R15: ffff8880a9825160
FS:  00007f48bc3c6700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000100 CR3: 000000009fef8000 CR4: 00000000001406f0