general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 29012 Comm: syz-executor.3 Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:proc_kill_sb+0x4d/0x110 fs/proc/root.c:267
Code: c1 ea 03 80 3c 02 00 0f 85 ad 00 00 00 49 8b ac 24 68 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a1 00 00 00 4c 8b 6d 08 4d 85 ed 74 0d e8 cb 51
RSP: 0018:ffffc900182ffd20 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc9001026d000
RDX: 0000000000000001 RSI: ffffffff81e37c9d RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8c347a2f R11: fffffbfff1868f45 R12: ffff88805d834000
R13: 00000000fffffff4 R14: 0000000000000000 R15: ffff88805d834068
FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f5d55b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000081510f0 CR3: 00000000a6380000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 deactivate_locked_super+0x8c/0xf0 fs/super.c:335
 vfs_get_super+0x258/0x2d0 fs/super.c:1212
 vfs_get_tree+0x89/0x2f0 fs/super.c:1547
 do_new_mount fs/namespace.c:2874 [inline]
 do_mount+0x1306/0x1b40 fs/namespace.c:3199
 __do_compat_sys_mount fs/compat.c:122 [inline]
 __se_compat_sys_mount fs/compat.c:89 [inline]
 __ia32_compat_sys_mount+0x608/0x710 fs/compat.c:89
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x270/0xe90 arch/x86/entry/common.c:396
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
Modules linked in:
---[ end trace 7f915a325d3e96df ]---
RIP: 0010:proc_kill_sb+0x4d/0x110 fs/proc/root.c:267
Code: c1 ea 03 80 3c 02 00 0f 85 ad 00 00 00 49 8b ac 24 68 06 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a1 00 00 00 4c 8b 6d 08 4d 85 ed 74 0d e8 cb 51
RSP: 0018:ffffc900182ffd20 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc9001026d000
RDX: 0000000000000001 RSI: ffffffff81e37c9d RDI: 0000000000000008
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8c347a2f R11: fffffbfff1868f45 R12: ffff88805d834000
R13: 00000000fffffff4 R14: 0000000000000000 R15: ffff88805d834068
FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:00000000f5d55b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000081510f0 CR3: 00000000a6380000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400