[ 6.159992] Code: 89 83 78 06 01 00 b8 01 00 00 00 5b 41 5c 41 5d 5d c3 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 31 d2 48 8b 87 c8 00 00 00 48 89 e5 <f0> 0f c1 50 0c 89 97 d0 00 00 00 83 e2 01 b8 01 00 00 00 74 1d Also, attached is the full console output. Thank you, Pavel On Thu, Jan 4, 2018 at 4:37 PM, Hugh Dickins <hughd@xxxxxxxxxx> wrote: > On Thu, Jan 4, 2018 at 1:23 PM, Pavel Tatashin > <pasha.tatashin@xxxxxxxxxx> wrote: >> I tried cherry picking >> 435086b36f62 x86/vsyscall/64: Explicitly set _PAGE_USER in the >> pagetable hierarchy >> >> on top of 4.4.110-rc1, (needed to resolve a small 5level table to >> 4level page table conflict). Unfortunately, this does not solve the >> panic/hanging problem I reported. For some reason I do not see the >> panic message anymore. Machine hangs here: >> >> [ 5.023052] zswap: loaded using pool lzo/zbud >> [ 5.023063] page_owner is disabled >> [ 5.026492] Key type trusted registered >> [ 5.029325] Key type encrypted registered >> [ 5.029330] ima: No TPM chip found, activating TPM-bypass! >> [ 5.029365] evm: HMAC attrs: 0x1 >> [ 5.034696] rtc_cmos 00:00: setting system clock to 2018-01-04 >> 21:20:34 UTC (1515100834) >> [ 5.216862] Freeing unused kernel memory: 1856K >> <hang> >> >> And reboots after about half a minute. > > Thanks for trying, but yes, I wouldn't expect a straight cherry-pick > of that to work in the context of 4.4.110: it needs to be > cherry-picked "in principle". Which Borislav has done, and I'll > forward you his (not yet reviewed) patch too, but frankly I've much > less hope that it will help your crash than Thomas's. > > So please revert that cherry-pick; and if Borislav's patch doesn't > help, if you can send us a "Code:" line from the crash, that may still > give us more to go on. > > As Linus remarked earlier, "The PTI patches obviously change percpu > stuff, but this looks like an odd place for that to manifest". > Exactly: segfault and panic when starting init is a "normal" symptom > when we get something wrong with Kaiser/PTI, but a kthread crashing in > dyntick_save_progress_counter is something new to me. > > Hugh
Attachment:
console_panic.output.gz
Description: GNU Zip compressed data