BUG: kernel NULL pointer dereference, address: 0000000000000282 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 0 P4D 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3881 Comm: systemd-udevd Not tainted 5.8.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__syscall_return_slowpath+0x26/0x280 arch/x86/entry/common.c:339 Code: 0b 0f 1f 00 41 55 65 48 8b 04 25 00 ff 01 00 41 54 55 53 48 83 3d 11 60 b4 08 00 48 8b 18 74 3f 48 89 fd 9c 58 0f 1f 44 00 00 <00> 00 00 00 00 00 00 00 00 00 10 75 58 48 83 3d fd 5f b4 08 00 0f RSP: 0018:ffffc90001607f18 EFLAGS: 00010282 RAX: 0000000000000282 RBX: 0000000000004100 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffffffff81bf159c RDI: ffffc90001607f58 RBP: ffffc90001607f58 R08: 0000000000000000 R09: ffffc90001607d6f R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f941d97a8c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000282 CR3: 00000000a20f7000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_syscall_64+0x6c/0xe0 arch/x86/entry/common.c:393 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f941c7ed2e2 Code: Bad RIP value. RSP: 002b:00007ffeac2ffb38 EFLAGS: 00000246 ORIG_RAX: 0000000000000005 RAX: 0000000000000000 RBX: 000000000000000f RCX: 00007f941c7ed2e2 RDX: 00007ffeac2ffb40 RSI: 00007ffeac2ffb40 RDI: 000000000000000f RBP: 00007f941d97a710 R08: 000055f59180e710 R09: 0000000000001010 R10: 0000000000000030 R11: 0000000000000246 R12: 0000000000000000 R13: 000055f591805940 R14: 00000000000000ff R15: 000055f591805940 Modules linked in: CR2: 0000000000000282