Public bug reported:
ZTE's ZX are a family of processors, mostly used in set-top-boxes, and
ARCH_ZX is the corresponding machine option. ARCH_ZX code is
multiplatform ready, but it's not enabled in multi_v7_defconfig and by
disabling it, we avoid a non-fatal oops on the BeagleBone upon boot:
[ 5.396243] Unable to handle kernel paging request at virtual address
44784651
[ 5.403908] pgd = db7c4000
[ 5.406771] [44784651] *pgd=00000000
[ 5.410529] Internal error: Oops: 5 [#1] SMP ARM
[ 5.415335] Modules linked in:
[ 5.418522] CPU: 0 PID: 123 Comm: udevadm Not tainted
4.8.0-rc8-00651-g05f36f5 #17
[ 5.426402] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 5.432745] task: db6ec000 task.stack: db6e0000
[ 5.437474] PC is at kobject_uevent_env+0x1c/0x514
[ 5.442467] LR is at uevent_store+0x38/0x44
[ 5.446821] pc : [<c059bf34>] lr : [<c07172d4>] psr: 600e0013
[ 5.446821] sp : db6e1ec8 ip : 44784641 fp : 00000003
[ 5.458774] r10: da17dc8c r9 : db6e1f80 r8 : db6d1080
[ 5.464212] r7 : 00000000 r6 : 00000000 r5 : c10b25ec r4 : 00000003
[ 5.471006] r3 : 00000064 r2 : 00000000 r1 : 00000000 r0 : 44784641
[ 5.477804] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 5.485233] Control: 10c5387d Table: 9b7c4019 DAC: 00000051
[ 5.491214] Process udevadm (pid: 123, stack limit = 0xdb6e0220)
[ 5.497466] Stack: (0xdb6e1ec8 to 0xdb6e2000)
[ 5.502004] 1ec0: 00000003 c0428684 db6446d0 da90f880
c51b92f6 00000006
[ 5.510523] 1ee0: db5f3039 db501280 00000000 da84bf68 da9982b0 00000101
00000001 00000003
[ 5.519042] 1f00: c10b25ec 00000000 00000000 db6d1080 db6e1f80 da17dc8c
00000003 c07172d4
[ 5.527560] 1f20: be8f9fa9 00000000 00000003 00000003 da17dc80 c047a60c
00000000 00000000
[ 5.536078] 1f40: 00000003 da211b40 be8f9fa9 db6e1f80 be8f9fa9 00000003
00000000 c04199fc
[ 5.544596] 1f60: 00000000 c04184b8 da211b40 da211b40 00000000 00000000
be8f9fa9 c041a750
[ 5.553115] 1f80: 00000000 00000000 db6e0000 7f79c0c8 7f647088 7f647084
00000004 c0307ec4
[ 5.561635] 1fa0: db6e0000 c0307d00 7f79c0c8 7f647088 00000003 be8f9fa9
00000003 000000ff
[ 5.570153] 1fc0: 7f79c0c8 7f647088 7f647084 00000004 7f631440 b6fe1ce8
be8f9384 00000003
[ 5.578671] 1fe0: 00000000 be8f936c 7f60592d b6ed14d6 200e0030 00000003
00000000 00000000
[ 5.587204] [<c059bf34>] (kobject_uevent_env) from [<c07172d4>]
(uevent_store+0x38/0x44)
[ 5.595644] [<c07172d4>] (uevent_store) from [<c047a60c>]
(kernfs_fop_write+0xc0/0x1e8)
[ 5.603987] [<c047a60c>] (kernfs_fop_write) from [<c04199fc>]
(vfs_write+0xa4/0x180)
[ 5.612055] [<c04199fc>] (vfs_write) from [<c041a750>] (SyS_write+0x3c/0x90)
[ 5.619406] [<c041a750>] (SyS_write) from [<c0307d00>]
(ret_fast_syscall+0x0/0x3c)
[ 5.627294] Code: ea000002 e59cc00c e35c0000 0a000040 (e59c7010)
[ 5.633725] ---[ end trace 27a6bb72102d5188 ]---
We similarly disabled ARCH_ZX in Xenial (see
ac955a7907cf2adb0409bbd1d719f8ba24bbaed6)
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Tim Gardner (timg-tpi)
Status: Fix Committed
** Affects: linux (Ubuntu Yakkety)
Importance: Undecided
Assignee: Tim Gardner (timg-tpi)
Status: Fix Committed
** Also affects: linux (Ubuntu Yakkety)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Yakkety)
Status: New => Fix Committed
** Changed in: linux (Ubuntu Yakkety)
Assignee: (unassigned) => Tim Gardner (timg-tpi)
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https://bugs.launchpad.net/bugs/1628503
Title:
Yakkety - disable ARCH_ZX
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Yakkety:
Fix Committed
Bug description:
ZTE's ZX are a family of processors, mostly used in set-top-boxes, and
ARCH_ZX is the corresponding machine option. ARCH_ZX code is
multiplatform ready, but it's not enabled in multi_v7_defconfig and by
disabling it, we avoid a non-fatal oops on the BeagleBone upon boot:
[ 5.396243] Unable to handle kernel paging request at virtual address
44784651
[ 5.403908] pgd = db7c4000
[ 5.406771] [44784651] *pgd=00000000
[ 5.410529] Internal error: Oops: 5 [#1] SMP ARM
[ 5.415335] Modules linked in:
[ 5.418522] CPU: 0 PID: 123 Comm: udevadm Not tainted
4.8.0-rc8-00651-g05f36f5 #17
[ 5.426402] Hardware name: Generic AM33XX (Flattened Device Tree)
[ 5.432745] task: db6ec000 task.stack: db6e0000
[ 5.437474] PC is at kobject_uevent_env+0x1c/0x514
[ 5.442467] LR is at uevent_store+0x38/0x44
[ 5.446821] pc : [<c059bf34>] lr : [<c07172d4>] psr: 600e0013
[ 5.446821] sp : db6e1ec8 ip : 44784641 fp : 00000003
[ 5.458774] r10: da17dc8c r9 : db6e1f80 r8 : db6d1080
[ 5.464212] r7 : 00000000 r6 : 00000000 r5 : c10b25ec r4 : 00000003
[ 5.471006] r3 : 00000064 r2 : 00000000 r1 : 00000000 r0 : 44784641
[ 5.477804] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment
none
[ 5.485233] Control: 10c5387d Table: 9b7c4019 DAC: 00000051
[ 5.491214] Process udevadm (pid: 123, stack limit = 0xdb6e0220)
[ 5.497466] Stack: (0xdb6e1ec8 to 0xdb6e2000)
[ 5.502004] 1ec0: 00000003 c0428684 db6446d0 da90f880
c51b92f6 00000006
[ 5.510523] 1ee0: db5f3039 db501280 00000000 da84bf68 da9982b0 00000101
00000001 00000003
[ 5.519042] 1f00: c10b25ec 00000000 00000000 db6d1080 db6e1f80 da17dc8c
00000003 c07172d4
[ 5.527560] 1f20: be8f9fa9 00000000 00000003 00000003 da17dc80 c047a60c
00000000 00000000
[ 5.536078] 1f40: 00000003 da211b40 be8f9fa9 db6e1f80 be8f9fa9 00000003
00000000 c04199fc
[ 5.544596] 1f60: 00000000 c04184b8 da211b40 da211b40 00000000 00000000
be8f9fa9 c041a750
[ 5.553115] 1f80: 00000000 00000000 db6e0000 7f79c0c8 7f647088 7f647084
00000004 c0307ec4
[ 5.561635] 1fa0: db6e0000 c0307d00 7f79c0c8 7f647088 00000003 be8f9fa9
00000003 000000ff
[ 5.570153] 1fc0: 7f79c0c8 7f647088 7f647084 00000004 7f631440 b6fe1ce8
be8f9384 00000003
[ 5.578671] 1fe0: 00000000 be8f936c 7f60592d b6ed14d6 200e0030 00000003
00000000 00000000
[ 5.587204] [<c059bf34>] (kobject_uevent_env) from [<c07172d4>]
(uevent_store+0x38/0x44)
[ 5.595644] [<c07172d4>] (uevent_store) from [<c047a60c>]
(kernfs_fop_write+0xc0/0x1e8)
[ 5.603987] [<c047a60c>] (kernfs_fop_write) from [<c04199fc>]
(vfs_write+0xa4/0x180)
[ 5.612055] [<c04199fc>] (vfs_write) from [<c041a750>]
(SyS_write+0x3c/0x90)
[ 5.619406] [<c041a750>] (SyS_write) from [<c0307d00>]
(ret_fast_syscall+0x0/0x3c)
[ 5.627294] Code: ea000002 e59cc00c e35c0000 0a000040 (e59c7010)
[ 5.633725] ---[ end trace 27a6bb72102d5188 ]---
We similarly disabled ARCH_ZX in Xenial (see
ac955a7907cf2adb0409bbd1d719f8ba24bbaed6)
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