Restarts caused by modem subsystem failure

[socram8888]

I've seen this happening before on the Xperia S (http://talk.sonymobile.com/t5/Xperia-S-SL-acro-S/Xperia-S-intermittent-restarts-other-issues/td-p/29...

I have been using an SK17i for three years and upgraded recently to an Xperia M (C1905). It initially had 4.1 and now I've upgraded it to 4.3 (15.4.A.0.23 to be precise).

Since then I have been experiencing issues with random restarts. Since I have the phone rooted, I have fetched the crash logs and this is what it causing the issues:

[ 975.460888] SMSM: Modem SMSM state changed to SMSM_RESET.
[ 975.461010] Notify: start reset
[ 975.461040] Modem Fatal Error. Let's note!
[ 975.461071] Probable fatal error on the modem.
[ 975.461101] modem subsystem failure reason: :Excep :0:Exception detected.
[ 975.461132] subsys-restart: subsystem_restart_dev(): Restart sequence requested for modem, restart_level = 1.
[ 975.461162] Kernel panic - not syncing: subsys-restart: Resetting the SoC - modem crashed.
[ 975.461223] [<c00144a8>] (unwind_backtrace+0x0/0x11c) from [<c0789e14>] (panic+0x9c/0x2b0)
[ 975.461284] [<c0789e14>] (panic+0x9c/0x2b0) from [<c005ea78>] (subsystem_restart_dev+0x11c/0x154)
[ 975.461315] [<c005ea78>] (subsystem_restart_dev+0x11c/0x154) from [<c005fea8>] (restart_modem+0xcc/0x104)
[ 975.461376] [<c005fea8>] (restart_modem+0xcc/0x104) from [<c0034864>] (notify_smsm_cb_clients_worker+0xa4/0x1c4)
[ 975.461406] [<c0034864>] (notify_smsm_cb_clients_worker+0xa4/0x1c4) from [<c009409c>] (process_one_work+0x1c8/0x320)
[ 975.461467] [<c009409c>] (process_one_work+0x1c8/0x320) from [<c00943bc>] (worker_thread+0x19c/0x2bc)
[ 975.461498] [<c00943bc>] (worker_thread+0x19c/0x2bc) from [<c00987dc>] (kthread+0x84/0x94)
[ 975.461528] [<c00987dc>] (kthread+0x84/0x94) from [<c000ecd4>] (kernel_thread_exit+0x0/0x8)
[ 975.461589] wcnss_8960: crash shutdown : 0
[ 978.567220] &@panic_name@:*kworker/u:2*
[ 978.567373] Rebooting in 10 seconds..
[ 988.584922] Crash time on panic(mon/day/year hour:min:sec): 20140513145458
[ 988.584953] Kernel panic. Let's note!
[ 988.584953] Going down for restart now

It has been affecting phones from other manufacturers too (http://forum.cyanogenmod.com/topic/89358-bug-found-in-cm-kernel/)

[Johan]

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.

I'm sorry to hear that. I suggest that you try to reinstall the phone software using Update Service..

Before reinstalling your device you may want to backup your information first. Check out this topic for more information on how to.
How to backup?

Please let me know if you still experience this after reinstalling the phone software.

[socram8888]

I reinstalled it and apparently worked fine for a week or so, so I thought it was fixed.

However yesterday I had two more reboots.

[Graymee]

I'm also suffering with my phone Experia M (C1905) randomly rebooting/restarting. The phone is not rooted and is running Android 4.3.

[samkkr]

would suggest to do a software repair with sony update service, if problem still persists then take it to sony centre

[socram8888]

This is a software failure. This is not anything that can be fixed reflashing the very same firmware or taking it to a Sony centre.

[got_it_sony]

i have the same issue with my xperia m on latest 4.3 firmware. Reflashing don‘t helps. Somedays it reboots more than 10 times a day!

Here is the log:
[ 3396.871386] suspend: exit suspend, ret = 0 (2014-09-17 12:34:00.822326145 UTC)
[ 3396.871417] suspend: del suspend_hang_timer
[ 3396.993376] wlan: [1004:F :DAT] RX Low resource, Durign wait time period 6000, RX resource not allocated
[ 3396.993407] PMIC READ: addr = 1d8, value = 0
[ 3396.993407] PMIC READ: addr = b4, value = 0
[ 3396.993437] PMIC READ: addr = c0, value = 0
[ 3396.993437] PMIC READ: addr = 62, value = 0
[ 3396.993437] PMIC READ: addr = 1e8, value = 0
[ 3396.993468] PMIC READ: addr = 6c, value = 0
[ 3396.993468] PMIC READ: addr = 60, value = 0
[ 3397.125621] wcnss_8960: smsm state changed
[ 3397.125621] PMIC READ: addr = 1d8, value = 0
[ 3397.125621] PMIC READ: addr = b4, value = 0
[ 3397.125651] PMIC READ: addr = c0, value = 0
[ 3397.125651] PMIC READ: addr = 62, value = 0
[ 3397.125651] PMIC READ: addr = 1e8, value = 0
[ 3397.125682] PMIC READ: addr = 6c, value = 0
[ 3397.125682] PMIC READ: addr = 60, value = 0
[ 3397.125682] Kernel panic - not syncing: wcnss_8960: SMSM reset request received from Riva
[ 3397.125743] [<c00144a8>] (unwind_backtrace+0x0/0x11c) from [<c0789e34>] (panic+0x9c/0x2b0)
[ 3397.125773] [<c0789e34>] (panic+0x9c/0x2b0) from [<c0060700>] (smsm_state_cb_hdlr+0x6c/0x164)
[ 3397.125804] [<c0060700>] (smsm_state_cb_hdlr+0x6c/0x164) from [<c0034864>] (notify_smsm_cb_clients_worker+0xa4/0x1c4)
[ 3397.125835] [<c0034864>] (notify_smsm_cb_clients_worker+0xa4/0x1c4) from [<c009409c>] (process_one_work+0x1c8/0x320)
[ 3397.125865] [<c009409c>] (process_one_work+0x1c8/0x320) from [<c00943bc>] (worker_thread+0x19c/0x2bc)
[ 3397.125865] [<c00943bc>] (worker_thread+0x19c/0x2bc) from [<c00987dc>] (kthread+0x84/0x94)
[ 3397.125896] [<c00987dc>] (kthread+0x84/0x94) from [<c000ecd4>] (kernel_thread_exit+0x0/0x8)
[ 3397.125926] CPU1: stopping
[ 3397.125957] [<c00144a8>] (unwind_backtrace+0x0/0x11c) from [<c00138c4>] (handle_IPI+0x100/0x1d4)
[ 3397.125957] [<c00138c4>] (handle_IPI+0x100/0x1d4) from [<c00085c0>] (gic_handle_irq+0xa8/0xb4)
[ 3397.125987] [<c00085c0>] (gic_handle_irq+0xa8/0xb4) from [<c0797f00>] (__irq_svc+0x40/0x70)
[ 3397.125987] Exception stack(0xdc563f70 to 0xdc563fb8)
[ 3397.126018] 3f60: 00000000 00000018 00000003 00000000
[ 3397.126018] 3f80: c39224c0 00000000 c39224c0 c0d64f40 8020406a 511f04d4 00000000 00000000
[ 3397.126048] 3fa0: 00000000 dc563fb8 c005a5d8 c0060ae0 60000013 ffffffff
[ 3397.126048] [<c0797f00>] (__irq_svc+0x40/0x70) from [<c0060ae0>] (msm_cpuidle_enter+0x54/0x58)
[ 3397.126079] [<c0060ae0>] (msm_cpuidle_enter+0x54/0x58) from [<c050a100>] (cpuidle_enter+0x14/0x18)
[ 3397.126109] [<c050a100>] (cpuidle_enter+0x14/0x18) from [<c050a550>] (cpuidle_idle_call+0xa8/0x13c)
[ 3397.126140] [<c050a550>] (cpuidle_idle_call+0xa8/0x13c) from [<c000f1f4>] (cpu_idle+0x58/0xf0)
[ 3397.126140] [<c000f1f4>] (cpu_idle+0x58/0xf0) from [<809848f4>] (0x809848f4)
[ 3397.127177] msm_pm_wait_cpu_shutdown(): Timed out waiting for CPU 1 SPM to enter sleep state
[ 3397.127177] wcnss_8960: crash shutdown : 1
[ 3397.227467] &@panic_name@:*kworker/u:3*
[ 3397.227559] Rebooting in 10 seconds..
[ 3407.242117] Crash time on panic(mon/day/year hour:min:sec): 20140917123411
[ 3407.242148] Kernel panic. Let's note!
[ 3407.243155] msm_pm_wait_cpu_shutdown(): Timed out waiting for CPU 1 SPM to enter sleep state
[ 3407.243155] Going down for restart now

[Dimas-Papuas]

Hi!

I have a similar problem with the phone reboots.
There is a suspicion that the problem in the module Wi-Fi, try turning it off and watch a few days.