[  512.481776] BUG: kernel NULL pointer dereference, address: 0000000000000040
[  512.483670] #PF: supervisor read access in kernel mode
[  512.484862] #PF: error_code(0x0000) - not-present page
[  512.486069] PGD 18f8e067 P4D 18f8e067 PUD 31878067 PMD 0
[  512.487484] Oops: 0000 [#1] SMP
[  512.488253] CPU: 0 PID: 17514 Comm: executor Not tainted 5.12.0-rc6+ #2
[  512.489748] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
[  512.492123] RIP: 0010:kmsan_copy_page_meta+0x36/0x180
[  512.493486] Code: 80 3d 55 a9 ab 0a 00 74 14 49 89 f6 48 89 fb e8 20 d3 ff ff 83 b8 b0 0f 00 00 00 74 0d 48 83 c4 08 5b 41 5c 41 5e 41 5f 5d c3 <49> 83 7e 40 00 0f 84 f2 00 00 00 48 83 7b 40 00 74 e1 9c 8f 45 d8
[  512.497446] RSP: 0000:ffffa15f833df960 EFLAGS: 00010246
[  512.498676] RAX: ffff88f005463118 RBX: ffffc3f5411d2210 RCX: 0000000000000000
[  512.500286] RDX: ffff88f005064140 RSI: 0000000000000000 RDI: ffffc3f5411d2210
[  512.501873] RBP: ffffa15f833df988 R08: ffffc3f54000000f R09: ffff88f07ffd3000
[  512.503490] R10: 00000000f8c73958 R11: ffffffffb0400782 R12: ffff88f005463128
[  512.505059] R13: ffff88f005463118 R14: 0000000000000000 R15: 0000000000000000
[  512.506667] FS:  00007f7942afe700(0000) GS:ffff88f07fc00000(0000) knlGS:0000000000000000
[  512.508471] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  512.509779] CR2: 0000000000000040 CR3: 0000000012ced006 CR4: 0000000000770ef0
[  512.511317] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  512.512937] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  512.514538] PKRU: 55555554
[  512.515230] Call Trace:
[  512.515806]  wp_page_copy+0x74b/0x3330
[  512.516772]  ? __mod_memcg_state+0x1ae/0x4d0
[  512.517760]  ? kmsan_get_metadata+0x11d/0x180
[  512.518822]  ? __msan_instrument_asm_store+0x22/0x130
[  512.519978]  ? kmsan_get_metadata+0x11d/0x180
[  512.521012]  do_wp_page+0x905/0x2530
[  512.521915]  handle_mm_fault+0x5129/0x9e60
[  512.522944]  do_user_addr_fault+0x12b8/0x1f40
[  512.523992]  ? kmsan_get_shadow_origin_ptr+0x84/0xb0
[  512.525133]  __exc_page_fault+0xd1/0x310
[  512.526151]  ? kmsan_internal_unpoison_shadow+0x42/0x70
[  512.527328]  ? asm_exc_page_fault+0x8/0x30
[  512.528285]  exc_page_fault+0x45/0x50
[  512.529170]  asm_exc_page_fault+0x1e/0x30
[  512.530096] RIP: 0033:0x403150
[  512.530844] Code: 10 f3 41 0f 6f 50 20 0f 11 50 20 f3 41 0f 6f 58 30 0f 11 58 30 8b 41 40 89 c6 23 b1 00 01 00 00 83 c0 01 48 8d 34 b1 89 14 3e <89> 41 40 31 c0 c3 66 2e 0f 1f 84 00 00 00 00 00 48 89 7c 24 f0 48
[  512.534600] RSP: 002b:00007f7942afdc48 EFLAGS: 00010202
[  512.535772] RAX: 0000000000000001 RBX: 000000000078c080 RCX: 00007f7942add000
[  512.537267] RDX: 00000000000015e9 RSI: 00007f7942add000 RDI: 0000000000100140
[  512.538792] RBP: 00000000004e0fbf R08: 0000000020000100 R09: 0000000000004000
[  512.540289] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078c080
[  512.541787] R13: 0000000000000000 R14: 000000000078c080 R15: 00007ffd2cfaa590
[  512.543320] Modules linked in:
[  512.544081] Dumping ftrace buffer:
[  512.545153]    (ftrace buffer empty)
[  512.546039] CR2: 0000000000000040
[  512.546854] ---[ end trace 4c6fca03464cca91 ]---
[  512.547884] RIP: 0010:kmsan_copy_page_meta+0x36/0x180
[  512.549154] Code: 80 3d 55 a9 ab 0a 00 74 14 49 89 f6 48 89 fb e8 20 d3 ff ff 83 b8 b0 0f 00 00 00 74 0d 48 83 c4 08 5b 41 5c 41 5e 41 5f 5d c3 <49> 83 7e 40 00 0f 84 f2 00 00 00 48 83 7b 40 00 74 e1 9c 8f 45 d8
[  512.552914] RSP: 0000:ffffa15f833df960 EFLAGS: 00010246
[  512.554203] RAX: ffff88f005463118 RBX: ffffc3f5411d2210 RCX: 0000000000000000
[  512.555858] RDX: ffff88f005064140 RSI: 0000000000000000 RDI: ffffc3f5411d2210
[  512.557352] RBP: ffffa15f833df988 R08: ffffc3f54000000f R09: ffff88f07ffd3000
[  512.558865] R10: 00000000f8c73958 R11: ffffffffb0400782 R12: ffff88f005463128
[  512.560358] R13: ffff88f005463118 R14: 0000000000000000 R15: 0000000000000000
[  512.561864] FS:  00007f7942afe700(0000) GS:ffff88f07fc00000(0000) knlGS:0000000000000000
[  512.563560] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  512.564791] CR2: 0000000000000040 CR3: 0000000012ced006 CR4: 0000000000770ef0
[  512.566310] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  512.567810] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  512.569312] PKRU: 55555554
[  512.569947] Kernel panic - not syncing: Fatal exception
[  512.571228] Dumping ftrace buffer:
[  512.571993]    (ftrace buffer empty)
[  512.572787] Kernel Offset: 0x24e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[  512.575070] Rebooting in 1 seconds..