BUG: kernel NULL pointer dereference, address: 0000000000000000 #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: 1 PID: 4115 Comm: systemd-udevd Not tainted 5.7.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffc900015b7f28 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffffff88600300 RCX: 96c88b26cf9ef600 RDX: ffff8880a2ff0300 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff81bcab1d R09: fffff520002b6fc0 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000006 R13: dffffc0000000000 R14: ffffc900015b7f58 R15: 0000000000000100 FS: 00007fcd00ab48c0(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000a6092000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x7fccff927335 Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89 RSP: 002b:00007ffed61e14e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 RAX: ffffffffffffffda RBX: 0000561bcbfd00f0 RCX: 00007fccff927335 RDX: 00007ffed61e1520 RSI: 00007ffed61e1520 RDI: 0000561bcbfcf0f0 RBP: 00007ffed61e15e0 R08: 00007fccffbe61e8 R09: 0000000000001010 R10: 0000000000000020 R11: 0000000000000246 R12: 0000561bcbfcf0f0 R13: 0000561bcbfcf110 R14: 0000561bcbfb259b R15: 0000561bcbfb25a0 Modules linked in: CR2: 0000000000000000 ---[ end trace fced7989a80dbe7b ]--- RIP: 0010:do_syscall_64+0xf3/0x1b0 arch/x86/entry/common.c:295 Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffc900015b7f28 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffffff88600300 RCX: 96c88b26cf9ef600 RDX: ffff8880a2ff0300 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff81bcab1d R09: fffff520002b6fc0 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000006 R13: dffffc0000000000 R14: ffffc900015b7f58 R15: 0000000000000100 FS: 00007fcd00ab48c0(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000a6092000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400