BUG: kernel NULL pointer dereference, address: 0000000000000282 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 91de5067 P4D 91de5067 PUD 91de6067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6807 Comm: syz-executor.0 Not tainted 5.8.0-rc3-next-20200703-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:322 Code: 0b 0f 1f 00 41 55 65 48 8b 04 25 c0 fe 01 00 41 54 55 53 48 83 3d 91 7e 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 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffc900016b7f18 EFLAGS: 00010282 RAX: 0000000000000282 RBX: 0000000000004000 RCX: 0000000000000000 RDX: ffff88809ee203c0 RSI: ffffffff816461dd RDI: ffffc900016b7f58 RBP: ffffc900016b7f58 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000002456940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000282 CR3: 0000000091de4000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_syscall_64+0x6c/0xe0 arch/x86/entry/common.c:376 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45b030 Code: Bad RIP value. RSP: 002b:00007ffec4d5d1e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 RAX: 0000000000000000 RBX: 0000000000092b96 RCX: 000000000045b030 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffec4d5d1f0 RBP: 0000000000000760 R08: 0000000000000001 R09: 0000000002456940 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014 R13: 00007ffec4d5d240 R14: 0000000000092b1f R15: 00007ffec4d5d250 Modules linked in: CR2: 0000000000000282 ---[ end trace a4ecba1e3614d356 ]--- RIP: 0010:__syscall_return_slowpath+0x26/0x280 arch/x86/entry/common.c:322 Code: 0b 0f 1f 00 41 55 65 48 8b 04 25 c0 fe 01 00 41 54 55 53 48 83 3d 91 7e 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 00 00 00 00 00 00 00 00 00 00 00 00 RSP: 0018:ffffc900016b7f18 EFLAGS: 00010282 RAX: 0000000000000282 RBX: 0000000000004000 RCX: 0000000000000000 RDX: ffff88809ee203c0 RSI: ffffffff816461dd RDI: ffffc900016b7f58 RBP: ffffc900016b7f58 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000002456940(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000282 CR3: 0000000091de4000 CR4: 00000000001526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400