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: 8479 Comm: syz-executor126 Not tainted 5.9.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:call_commit_handler+0x8b/0x110 net/wireless/wext-core.c:900 Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 7d 48 8b 9d e0 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 75 73 48 b8 00 00 00 00 00 fc ff df 48 8b 1b 48 89 da RSP: 0018:ffffc900030d7ca8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8844a668 RDX: 0000000000000000 RSI: ffffffff8844a675 RDI: ffff8880a79d81e0 RBP: ffff8880a79d8000 R08: 0000000000000000 R09: ffff8880a79d8047 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880a79d8040 R13: ffffc900030d7db0 R14: ffff8880a79d8000 R15: 0000000000000004 FS: 00000000010af880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200000c0 CR3: 000000009cee1000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ioctl_standard_call+0x1b8/0x1f0 net/wireless/wext-core.c:1029 wireless_process_ioctl+0xc8/0x4c0 net/wireless/wext-core.c:954 wext_ioctl_dispatch net/wireless/wext-core.c:987 [inline] wext_ioctl_dispatch net/wireless/wext-core.c:975 [inline] wext_handle_ioctl+0x26b/0x280 net/wireless/wext-core.c:1048 sock_ioctl+0x439/0x730 net/socket.c:1119 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+0x193/0x200 fs/ioctl.c:739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x441549 Code: e8 ec 05 03 00 48 83 c4 18 c3 0f 1f 80 00 00 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 0f 83 7b 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc33c4eb78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffc33c4eba0 RCX: 0000000000441549 RDX: 00000000200000c0 RSI: 0000000000008b04 RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000002000000000 R09: 0000002000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032 R13: 0000000000000000 R14: 000000000000000c R15: 0000000000000004 Modules linked in: ---[ end trace 6d6b3015884ed80b ]--- RIP: 0010:call_commit_handler+0x8b/0x110 net/wireless/wext-core.c:900 Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 7d 48 8b 9d e0 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 75 73 48 b8 00 00 00 00 00 fc ff df 48 8b 1b 48 89 da RSP: 0018:ffffc900030d7ca8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8844a668 RDX: 0000000000000000 RSI: ffffffff8844a675 RDI: ffff8880a79d81e0 RBP: ffff8880a79d8000 R08: 0000000000000000 R09: ffff8880a79d8047 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880a79d8040 R13: ffffc900030d7db0 R14: ffff8880a79d8000 R15: 0000000000000004 FS: 00000000010af880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb67003e108 CR3: 000000009cee1000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400