BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 11f1f7067 P4D 11f1f7067 PUD 11f1f6067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 0 PID: 10238 Comm: syz-executor.0 Not tainted 5.11.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:call_commit_handler net/wireless/wext-core.c:900 [inline]
RIP: 0010:ioctl_standard_call+0x9b/0x120 net/wireless/wext-core.c:1029
Code: 5e c3 4d 89 e8 4c 89 f1 48 89 da 44 89 e6 48 89 ef e8 c9 fb ff ff 83 f8 8d 75 da 49 8b 45 40 a8 01 74 29 49 8b 85 e0 01 00 00 <48> 8b 00 48 8b 00 48 85 c0 74 17 48 83 c4 08 4c 89 ef 31 c9 5b 31
RSP: 0018:ffffc90003013df8 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffffff842e8f50 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffffffff84b58941 RDI: ffffffff849fd7e6
RBP: ffffc90003013e50 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000008b04
R13: ffff88811f2e8000 R14: ffffffff83342e50 R15: 0000000000000000
FS:  00007f13e8bab700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000011f207000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 wext_ioctl_dispatch net/wireless/wext-core.c:987 [inline]
 wext_handle_ioctl+0x9b/0xf0 net/wireless/wext-core.c:1048
 sock_ioctl+0x1d0/0x360 net/socket.c:1109
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x7c/0xb0 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45deb9
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:00007f13e8baac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000013440 RCX: 000000000045deb9
RDX: 00000000200000c0 RSI: 0000000000008b04 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffe8acfedaf R14: 00007f13e8bab9c0 R15: 000000000118bf2c
Modules linked in:
CR2: 0000000000000000
---[ end trace 17644627532e3e22 ]---
RIP: 0010:call_commit_handler net/wireless/wext-core.c:900 [inline]
RIP: 0010:ioctl_standard_call+0x9b/0x120 net/wireless/wext-core.c:1029
Code: 5e c3 4d 89 e8 4c 89 f1 48 89 da 44 89 e6 48 89 ef e8 c9 fb ff ff 83 f8 8d 75 da 49 8b 45 40 a8 01 74 29 49 8b 85 e0 01 00 00 <48> 8b 00 48 8b 00 48 85 c0 74 17 48 83 c4 08 4c 89 ef 31 c9 5b 31
RSP: 0018:ffffc90003013df8 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffffff842e8f50 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffffffff84b58941 RDI: ffffffff849fd7e6
RBP: ffffc90003013e50 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000005 R12: 0000000000008b04
R13: ffff88811f2e8000 R14: ffffffff83342e50 R15: 0000000000000000
FS:  00007f13e8bab700(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff0f403d0d8 CR3: 000000011f207000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400