https://bugzilla.kernel.org/show_bug.cgi?id=197117
Bug ID: 197117
Summary: kernel NULL pointer dereference in ACPI WMI
Product: ACPI
Version: 2.5
Kernel Version: 4.13.4 and below as well
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: Other
Assignee: [email protected]
Reporter: [email protected]
Regression: No
On my Dell M4800 this happens on some of the kernels and on some it doesn't,
with 4.13.4 this is 100% reproducible on every boot.
[ 0.772140] BUG: unable to handle kernel NULL pointer dereference at
0000000000000030
[ 0.772140] IP: netlink_broadcast_filtered+0x25/0x3d0
[ 0.772140] PGD 0
[ 0.772140] P4D 0
[ 0.772140] Oops: 0000 [#1] PREEMPT SMP
[ 0.772140] Modules linked in:
[ 0.772140] CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted 4.13.4-dell-m4800 #1
[ 0.772140] Hardware name: Dell Inc. Precision M4800/0T3YTY, BIOS A18
12/22/2016
[ 0.772140] Workqueue: kacpi_notify acpi_os_execute_deferred
[ 0.772140] task: ffff88080af13c80 task.stack: ffffc90003154000
[ 0.772140] RIP: 0010:netlink_broadcast_filtered+0x25/0x3d0
[ 0.772140] RSP: 0000:ffffc90003157cf8 EFLAGS: 00010282
[ 0.772140] RAX: 0000000000000001 RBX: ffff88080a7f4900 RCX:
0000000000000000
[ 0.772140] RDX: 0000000000000000 RSI: 0000000001080020 RDI:
ffff88080a7f4900
[ 0.772140] RBP: ffffc90003157d60 R08: 0000000001080020 R09:
0000000000000000
[ 0.772140] R10: 0000000000000000 R11: ffffffff81d9db00 R12:
0000000000000000
[ 0.772140] R13: 0000000000000000 R14: ffff88080a2dce14 R15:
0000000000000000
[ 0.772140] FS: 0000000000000000(0000) GS:ffff88082ea00000(0000)
knlGS:0000000000000000
[ 0.772140] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.772140] CR2: 0000000000000030 CR3: 0000000002009000 CR4:
00000000001406f0
[ 0.772140] Call Trace:
[ 0.772140] ? __kmalloc_reserve.isra.35+0x31/0x90
[ 0.772140] ? __alloc_skb+0x4c/0x1a0
[ 0.772140] ? __nlmsg_put+0x6e/0x80
[ 0.772140] netlink_broadcast+0x13/0x20
[ 0.772140] acpi_bus_generate_netlink_event+0x117/0x160
[ 0.772140] acpi_wmi_notify_handler+0xf8/0x150
[ 0.772140] ? _raw_spin_unlock_irqrestore+0x24/0x40
[ 0.772140] ? preempt_count_add+0x9e/0xb0
[ 0.772140] ? _raw_spin_lock_irqsave+0x2a/0x60
[ 0.772140] acpi_ev_notify_dispatch+0x44/0x5c
[ 0.772140] acpi_os_execute_deferred+0x14/0x20
[ 0.772140] process_one_work+0x1e0/0x420
[ 0.772140] worker_thread+0x48/0x3f0
[ 0.772140] kthread+0x108/0x140
[ 0.772140] ? process_one_work+0x420/0x420
[ 0.772140] ? kthread_create_on_node+0x40/0x40
[ 0.772140] ret_from_fork+0x25/0x30
[ 0.772140] Code: 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 41 57 41 89
cf 41 56 41 55 49 89 fd 48 89 f7 44 89 c6 41 54 41 89 d4 53 48 83 ec 40 <49> 8b
45 30 44 89 45 a4 4c 89 4d a8 48 89 45 d0 e8 66 eb ff ff
[ 0.772141] RIP: netlink_broadcast_filtered+0x25/0x3d0 RSP: ffffc90003157cf8
[ 0.772143] CR2: 0000000000000030
[ 0.772147] ---[ end trace 3c73ae99f4e64500 ]---
dell/wmi modules:
dell_laptop 20480 0
dell_smm_hwmon 16384 0
wmi_bmof 16384 0
dell_wmi 16384 0
dell_smbios 16384 2 dell_wmi,dell_laptop
dell_smo8800 16384 0
dell_rbtn 16384 1
video 40960 3 dell_wmi,dell_laptop,i915
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