Oops: general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
CPU: 0 UID: 0 PID: 20193 Comm: syz.0.5731 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:new_curseg+0x1134/0x3580
Code: e8 81 ba cd fd 48 8b 7c 24 30 48 8b 07 49 6b cf 70 4c 8d 34 08 49 83 c6 61 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 73 11 00 00 41 80 3e 00 0f 84 e6 00 00 00
RSP: 0018:ffffc9000f167068 EFLAGS: 00010206
RAX: 000000000000000c RBX: 0000000000008000 RCX: dffffc0000000000
RDX: ffffc90008221000 RSI: 000000000007ffff RDI: ffff88801f371a88
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001e2cdfc R12: ffff88801f124000
R13: 0000000000000004 R14: 0000000000000061 R15: 0000000000000000
FS:  00007f3fd55f66c0(0000) GS:ffff88818d6c7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fd73eb840 CR3: 000000010df40000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 f2fs_allocate_data_block+0x229c/0x43c0
 f2fs_map_blocks+0x1512/0x4c20
 f2fs_file_write_iter+0x173d/0x2920
 iter_file_splice_write+0xa31/0x1240
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x57b/0xcb0
 do_splice_direct+0x195/0x290
 do_sendfile+0x52e/0x7c0
 __se_sys_sendfile64+0x144/0x1a0
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3fd739e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3fd55f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f3fd7625fa0 RCX: 00007f3fd739e159
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f3fd743506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3fd7626038 R14: 00007f3fd7625fa0 R15: 00007fffde427608
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:new_curseg+0x1134/0x3580
Code: e8 81 ba cd fd 48 8b 7c 24 30 48 8b 07 49 6b cf 70 4c 8d 34 08 49 83 c6 61 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 73 11 00 00 41 80 3e 00 0f 84 e6 00 00 00
RSP: 0018:ffffc9000f167068 EFLAGS: 00010206
RAX: 000000000000000c RBX: 0000000000008000 RCX: dffffc0000000000
RDX: ffffc90008221000 RSI: 000000000007ffff RDI: ffff88801f371a88
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001e2cdfc R12: ffff88801f124000
R13: 0000000000000004 R14: 0000000000000061 R15: 0000000000000000
FS:  00007f3fd55f66c0(0000) GS:ffff88818d6c7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fd73eb840 CR3: 000000010df40000 CR4: 00000000000006f0
