ehea: Fix use after free on reboot
Fixes the following use after free oops:
ehea: Reboot: freeing all eHEA resources
Unable to handle kernel paging request for data at address 0x6b6b6b6b6b6b6c5b
Faulting instruction address: 0xd000000000354488
cpu 0x0: Vector: 300 (Data Access) at [
c00000002ec6f310]
pc:
d000000000354488: .ehea_shutdown_single_port+0x50/0x78 [ehea]
lr:
d00000000035447c: .ehea_shutdown_single_port+0x44/0x78 [ehea]
sp:
c00000002ec6f590
msr:
8000000000009032
dar:
6b6b6b6b6b6b6c5b
dsisr:
40000000
current = 0xc0000000281412e0
paca = 0xc0000000006df300
pid = 10930, comm = reboot
enter ? for help
[
c00000002ec6f590]
d00000000035d64c .ehea_remove+0x44/0x124 [ehea] (unreliable)
[
c00000002ec6f630]
c000000000319f88 .of_platform_device_remove+0x40/0x58
[
c00000002ec6f6a0]
c000000000291018 .__device_release_driver+0xb0/0xf0
[
c00000002ec6f730]
c000000000291120 .driver_detach+0xc8/0xfc
[
c00000002ec6f7c0]
c00000000028fe24 .bus_remove_driver+0xb4/0x114
[
c00000002ec6f850]
c000000000291768 .driver_unregister+0x54/0x74
[
c00000002ec6f8e0]
c00000000031a0c8 .of_unregister_driver+0x14/0x28
[
c00000002ec6f950]
c000000000023ba0 .ibmebus_unregister_driver+0x10/0x24
[
c00000002ec6f9c0]
d000000000354180 .ehea_reboot_notifier+0x30/0x4c [ehea]
[
c00000002ec6fa40]
c0000000003c95a8 .notifier_call_chain+0x5c/0xcc
[
c00000002ec6fae0]
c000000000082cd4 .__blocking_notifier_call_chain+0x70/0xb0
[
c00000002ec6fb90]
c000000000075cf8 .kernel_restart_prepare+0x24/0x58
[
c00000002ec6fc10]
c000000000075f0c .kernel_restart+0x20/0x6c
[
c00000002ec6fc90]
c000000000078674 .sys_reboot+0x1d4/0x290
[
c00000002ec6fe30]
c0000000000086ac syscall_exit+0x0/0x40
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
projects / mirror_ubuntu-disco-kernel.git / commit