Sep 10 21:13:56 BelliashPC kernel: BUG: kernel NULL pointer dereference, address: 000000000000000d
Sep 10 21:13:56 BelliashPC kernel: #PF: supervisor write access in kernel mode
Sep 10 21:13:56 BelliashPC kernel: #PF: error_code(0x0002) - not-present page
Sep 10 21:13:56 BelliashPC kernel: PGD 0 P4D 0 
Sep 10 21:13:56 BelliashPC kernel: Oops: 0002 [#1] SMP NOPTI
Sep 10 21:13:56 BelliashPC kernel: CPU: 11 PID: 30804 Comm: kworker/11:2 Tainted: P           O    T 5.2.13-gentoo #1
Sep 10 21:13:56 BelliashPC kernel: Hardware name: Gigabyte Technology Co., Ltd. B450 AORUS ELITE/B450 AORUS ELITE, BIOS F42a 07/31/2019
Sep 10 21:13:56 BelliashPC kernel: Workqueue:  0x0 (events)
Sep 10 21:13:56 BelliashPC kernel: RIP: 0010:worker_thread+0xfc/0x3b0
Sep 10 21:13:56 BelliashPC kernel: Code: 0f 84 8e 02 00 00 48 8b 4c 24 18 49 39 4f 38 0f 85 a9 02 00 00 83 e0 fb 41 89 47 60 ff 4a 34 49 8b 17 49 8b 47 08 48 89 42 08 <48> 89 10 4d 89 3f 4d 89 7f 08 48 8b 45 20 4c 8d 6d 20 49 39 c5 74
Sep 10 21:13:56 BelliashPC kernel: RSP: 0018:ffffaec608acfec0 EFLAGS: 00010002
Sep 10 21:13:56 BelliashPC kernel: RAX: 000000000000000d RBX: ffff8d78aecdfa80 RCX: ffff8d789fa1b400
Sep 10 21:13:56 BelliashPC kernel: RDX: ffff8d78a4112780 RSI: ffff8d78a91e56c0 RDI: ffff8d78aecdfa80
Sep 10 21:13:56 BelliashPC kernel: RBP: ffff8d78aecdfa80 R08: ffff8d78aece0180 R09: 0000000000001800
Sep 10 21:13:56 BelliashPC kernel: R10: 0000000000000000 R11: ffffffffffffffff R12: ffff8d78a4112b68
Sep 10 21:13:56 BelliashPC kernel: R13: ffff8d78aecdfaa0 R14: ffff8d78a4112b40 R15: ffff8d78a4112b40
Sep 10 21:13:56 BelliashPC kernel: FS:  0000000000000000(0000) GS:ffff8d78aecc0000(0000) knlGS:0000000000000000
Sep 10 21:13:56 BelliashPC kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 10 21:13:56 BelliashPC kernel: CR2: 00000000000000b0 CR3: 000000069063a000 CR4: 0000000000340ee0
Sep 10 21:13:56 BelliashPC kernel: Call Trace:
Sep 10 21:13:56 BelliashPC kernel:  kthread+0xf8/0x130
Sep 10 21:13:56 BelliashPC kernel:  ? set_worker_desc+0xb0/0xb0
Sep 10 21:13:56 BelliashPC kernel:  ? kthread_park+0x80/0x80
Sep 10 21:13:56 BelliashPC kernel:  ret_from_fork+0x22/0x40
Sep 10 21:13:56 BelliashPC kernel: Modules linked in: nvidia_drm(PO) nvidia_modeset(PO) nvidia(PO) vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O)
Sep 10 21:13:56 BelliashPC kernel: CR2: 000000000000000d
Sep 10 21:13:56 BelliashPC kernel: ---[ end trace 23be40ec0c6dea2a ]---
Sep 10 21:13:56 BelliashPC kernel: RIP: 0010:worker_thread+0xfc/0x3b0
Sep 10 21:13:56 BelliashPC kernel: Code: 0f 84 8e 02 00 00 48 8b 4c 24 18 49 39 4f 38 0f 85 a9 02 00 00 83 e0 fb 41 89 47 60 ff 4a 34 49 8b 17 49 8b 47 08 48 89 42 08 <48> 89 10 4d 89 3f 4d 89 7f 08 48 8b 45 20 4c 8d 6d 20 49 39 c5 74
Sep 10 21:13:56 BelliashPC kernel: RSP: 0018:ffffaec608acfec0 EFLAGS: 00010002
Sep 10 21:13:56 BelliashPC kernel: RAX: 000000000000000d RBX: ffff8d78aecdfa80 RCX: ffff8d789fa1b400
Sep 10 21:13:56 BelliashPC kernel: RDX: ffff8d78a4112780 RSI: ffff8d78a91e56c0 RDI: ffff8d78aecdfa80
Sep 10 21:13:56 BelliashPC kernel: RBP: ffff8d78aecdfa80 R08: ffff8d78aece0180 R09: 0000000000001800
Sep 10 21:13:56 BelliashPC kernel: R10: 0000000000000000 R11: ffffffffffffffff R12: ffff8d78a4112b68
Sep 10 21:13:56 BelliashPC kernel: R13: ffff8d78aecdfaa0 R14: ffff8d78a4112b40 R15: ffff8d78a4112b40
Sep 10 21:13:56 BelliashPC kernel: FS:  0000000000000000(0000) GS:ffff8d78aecc0000(0000) knlGS:0000000000000000
Sep 10 21:13:56 BelliashPC kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 10 21:13:56 BelliashPC kernel: CR2: 00000000000000b0 CR3: 000000069063a000 CR4: 0000000000340ee0
Sep 10 21:14:16 BelliashPC kernel: NVRM: GPU at PCI:0000:06:00: GPU-4c9bfa83-5407-92ac-ce82-441bb9e3ac79
Sep 10 21:14:16 BelliashPC kernel: NVRM: GPU Board Serial Number: 
Sep 10 21:14:16 BelliashPC kernel: NVRM: Xid (PCI:0000:06:00): 8, pid=3723, Channel 00000010
Sep 10 21:14:18 BelliashPC kernel: rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
Sep 10 21:14:18 BelliashPC kernel: rcu: \x090-...0: (0 ticks this GP) idle=f26/1/0x4000000000000000 softirq=1165408/1165408 fqs=5246 
Sep 10 21:14:18 BelliashPC kernel: \x09(detected by 6, t=21002 jiffies, g=3474865, q=223)
Sep 10 21:14:18 BelliashPC kernel: Sending NMI from CPU 6 to CPUs 0:
Sep 10 21:14:18 BelliashPC kernel: NMI backtrace for cpu 0
Sep 10 21:14:18 BelliashPC kernel: CPU: 0 PID: 26618 Comm: kworker/0:0 Tainted: P      D    O    T 5.2.13-gentoo #1
Sep 10 21:14:18 BelliashPC kernel: Hardware name: Gigabyte Technology Co., Ltd. B450 AORUS ELITE/B450 AORUS ELITE, BIOS F42a 07/31/2019
Sep 10 21:14:18 BelliashPC kernel: Workqueue: events vmstat_shepherd
Sep 10 21:14:18 BelliashPC kernel: RIP: 0010:queued_spin_lock_slowpath+0x3d/0x1a0
Sep 10 21:14:18 BelliashPC kernel: Code: 3e f0 0f ba 2f 08 0f 92 c0 0f b6 c0 c1 e0 08 89 c2 8b 07 30 e4 09 d0 a9 00 01 ff ff 75 18 85 c0 74 0e 8b 07 84 c0 74 08 f3 90 <8b> 07 84 c0 75 f8 66 c7 07 01 00 c3 f6 c4 01 75 04 c6 47 01 00 48
Sep 10 21:14:18 BelliashPC kernel: RSP: 0018:ffffaec609d3fe08 EFLAGS: 00000002
Sep 10 21:14:18 BelliashPC kernel: RAX: 0000000000300101 RBX: ffff8d78aece4900 RCX: 0000000000000000
Sep 10 21:14:18 BelliashPC kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8d78aecdfa80
Sep 10 21:14:18 BelliashPC kernel: RBP: 000000000000002a R08: ffff8d78ae001da8 R09: 00000000000000d8
Sep 10 21:14:18 BelliashPC kernel: R10: 0000000000000000 R11: ffff8d78ae001e80 R12: ffff8d78ab174e00
Sep 10 21:14:18 BelliashPC kernel: R13: ffff8d78aecdd4a0 R14: 000000000001d808 R15: 000000000000000b
Sep 10 21:14:18 BelliashPC kernel: FS:  0000000000000000(0000) GS:ffff8d78aea00000(0000) knlGS:0000000000000000
Sep 10 21:14:18 BelliashPC kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Sep 10 21:14:18 BelliashPC kernel: CR2: 00007f0232d5f8b0 CR3: 00000007de9a8000 CR4: 0000000000340ef0
Sep 10 21:14:18 BelliashPC kernel: Call Trace:
Sep 10 21:14:18 BelliashPC kernel:  __queue_work+0x95/0x2f0
Sep 10 21:14:18 BelliashPC kernel:  ? __switch_to_asm+0x40/0x70
Sep 10 21:14:18 BelliashPC kernel:  queue_delayed_work_on+0x17/0x20
Sep 10 21:14:18 BelliashPC kernel:  vmstat_shepherd+0x61/0xa0
Sep 10 21:14:18 BelliashPC kernel:  process_one_work+0x19a/0x310
Sep 10 21:14:18 BelliashPC kernel:  worker_thread+0x45/0x3b0
Sep 10 21:14:18 BelliashPC kernel:  kthread+0xf8/0x130
Sep 10 21:14:18 BelliashPC kernel:  ? set_worker_desc+0xb0/0xb0
Sep 10 21:14:18 BelliashPC kernel:  ? kthread_park+0x80/0x80
Sep 10 21:14:18 BelliashPC kernel:  ret_from_fork+0x22/0x40
Sep 10 21:14:18 BelliashPC kernel: NVRM: os_schedule: Attempted to yield the CPU while in atomic or interrupt context
Sep 10 21:14:20 BelliashPC kernel: NVRM: os_schedule: Attempted to yield the CPU while in atomic or interrupt context



This is what happens on my Ryzen7 3700X CPU installed on Gigabyte B450 Aorus Elite motherboard on 5.2.13 kernel. I got BIOS with AGESA 1.0.0.3ABB already flashed. I tried zenstates.py as well as CONFIG_RCU_NOCB_CPU=y in the kernel and passing rcu-nocbs=0-15 as a kernel parameter. None of this helps.