general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 8271 Comm: syz-executor.0 Not tainted 5.9.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:io_file_from_index fs/io_uring.c:5963 [inline]
RIP: 0010:io_sqe_files_register fs/io_uring.c:7369 [inline]
RIP: 0010:__io_uring_register fs/io_uring.c:9463 [inline]
RIP: 0010:__do_sys_io_uring_register fs/io_uring.c:9553 [inline]
RIP: 0010:__se_sys_io_uring_register+0x328a/0x3da0 fs/io_uring.c:9535
Code: fc ff df 4c 8b 7c 24 30 48 8b 44 24 58 42 80 3c 20 00 74 08 4c 89 ff e8 94 eb df ff 45 8d 6e ff 4d 8b 3f 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 77 eb df ff 44 89 e8 c1 f8 09 48
RSP: 0018:ffffc900160efdc0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000000002c0 RCX: 1ffff11011e54238
RDX: ffff88805526c180 RSI: 00000000000002c0 RDI: 0000000000000000
RBP: 00000000fffffff7 R08: ffffffff81da118b R09: fffffbfff17054c6
R10: fffffbfff17054c6 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  00007f62720c1700(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055eff634ded8 CR3: 00000000a05b7000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45de59
Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f62720c0c78 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 0000000000008300 RCX: 000000000045de59
RDX: 00000000200006c0 RSI: 0000000000000002 RDI: 0000000000000005
RBP: 000000000118bf68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000301 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffc6ba251cf R14: 00007f62720c19c0 R15: 000000000118bf2c
Modules linked in:
---[ end trace 3bbdb45f75058025 ]---
RIP: 0010:io_file_from_index fs/io_uring.c:5963 [inline]
RIP: 0010:io_sqe_files_register fs/io_uring.c:7369 [inline]
RIP: 0010:__io_uring_register fs/io_uring.c:9463 [inline]
RIP: 0010:__do_sys_io_uring_register fs/io_uring.c:9553 [inline]
RIP: 0010:__se_sys_io_uring_register+0x328a/0x3da0 fs/io_uring.c:9535
Code: fc ff df 4c 8b 7c 24 30 48 8b 44 24 58 42 80 3c 20 00 74 08 4c 89 ff e8 94 eb df ff 45 8d 6e ff 4d 8b 3f 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 77 eb df ff 44 89 e8 c1 f8 09 48
RSP: 0018:ffffc900160efdc0 EFLAGS: 00010246

RAX: 0000000000000000 RBX: 00000000000002c0 RCX: 1ffff11011e54238
RDX: ffff88805526c180 RSI: 00000000000002c0 RDI: 0000000000000000
RBP: 00000000fffffff7 R08: ffffffff81da118b R09: fffffbfff17054c6
R10: fffffbfff17054c6 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000
FS:  00007f62720c1700(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f02ced78000 CR3: 00000000a05b7000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400