I forgot point to commit what has been fixed my panic: https://github.com/illumos/illumos-gate/commit/9adfa60d484ce2435f5af77cc99dcd4e692b6660 6314 buffer overflow in dsl_dataset_name
i think, you can try upgrade to latest changes and re-check your panic. -Igor > On Jun 22, 2016, at 5:45 PM, Igor Kozhukhov <[email protected]> wrote: > > based on your changeset number - it is old update: > https://github.com/illumos/illumos-gate/commit/26455f9efcf9b1e44937d4d86d1ce37b006f25a9 > > <https://github.com/illumos/illumos-gate/commit/26455f9efcf9b1e44937d4d86d1ce37b006f25a9> > 6052 decouple lzc_create() from the implementation details > > we have a lot of others changes in illumos tree and i can say - i have no > panic on my system with gcc48 build - i have tested by zfs tests. > > Maybe, as solution, you can try to merge to latest changes and try to check > it again? > i had panic with gcc48 build, but Matt pointed to some delphix update and we > have upstreamed it and i have no panics any more with full list of zfs tests, > what availabe on illumos tree. > > best regards, > -Igor > > >> On Jun 22, 2016, at 5:17 PM, Andriy Gapon <[email protected] >> <mailto:[email protected]>> wrote: >> >> >> I am not yet convinced that the problem has anything to do with >> miscompiled code. I am using exactly the same optimizations and exactly >> the same compiler as the official FreeBSD builds. >> >> On 22/06/2016 17:03, Igor Kozhukhov wrote: >>> Hi Andri, >>> >>> i have DilOS with gcc-4.8,5 (+ special patches) for illumos builds. >>> i had some problems with zdb - found it by zfs tests. >>> >>> problem has been fixed by disable of optimization : >>> -fno-aggressive-loop-optimizations >>> >>> also, i have added: >>> -fno-ipa-sra >>> >>> but i no remember a story why i have added it ;) >>> probabbly it was added with another illumos component and new gcc-4.8 >>> >>> As you know, illumos still is using gcc-4.4.4 and some newer compilers >>> can produce new issues with older code :) >>> >>> I think, you can try to play with your clang optimization flags too. >>> i have no experience with clang. >>> >>> best regards, >>> -Igor >>> >>> >>>> On Jun 22, 2016, at 4:21 PM, Andriy Gapon <[email protected] >>>> <mailto:[email protected]> >>>> <mailto:[email protected] <mailto:[email protected]>>> wrote: >>>> >>>> >>>> I am getting the following panic using the latest FreeBSD head that is >>>> synchronized with OpenZFS code as of >>>> illumos/illumos-gate@26455f9efcf9b1e44937d4d86d1ce37b006f25a9. >>>> >>>> panic: solaris assert: ba.ba_phys->bt_bytes == 0 (0x400 == 0x0), file: >>>> /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/bptree.c, >>>> line: 292 >>>> cpuid = 1 >>>> KDB: stack backtrace: >>>> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame >>>> 0xfffffe004db9d310 >>>> vpanic() at vpanic+0x182/frame 0xfffffe004db9d390 >>>> panic() at panic+0x43/frame 0xfffffe004db9d3f0 >>>> assfail3() at assfail3+0x2c/frame 0xfffffe004db9d410 >>>> bptree_iterate() at bptree_iterate+0x35e/frame 0xfffffe004db9d540 >>>> dsl_scan_sync() at dsl_scan_sync+0x24f/frame 0xfffffe004db9d890 >>>> spa_sync() at spa_sync+0x897/frame 0xfffffe004db9dad0 >>>> txg_sync_thread() at txg_sync_thread+0x383/frame 0xfffffe004db9dbb0 >>>> fork_exit() at fork_exit+0x84/frame 0xfffffe004db9dbf0 >>>> fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe004db9dbf0 >>>> --- trap 0, rip = 0, rsp = 0, rbp = 0 --- >>>> >>>> I have a crash dump, but unfortunately it's hard to work with it, >>>> because a lot of useful information got "optimized out" by clang. >>>> >>>> I can reproduce the panic using a synthetic workload, but I do not have >>>> a concise reproduction scenario. Every time the panic happens bt_bytes >>>> is 0x400, I haven't seen any other number there. >>>> >>>> Does anyone have an idea what could be causing this? >>>> I can try any diagnostic code that might shed more light. >>>> Thank you! >>>> >>>> -- >>>> Andriy Gapon >>>> >>>> >>>> http://www.listbox.com <http://www.listbox.com/> >>> >>> *openzfs-developer* | Archives >>> <https://www.listbox.com/member/archive/274414/=now >>> <https://www.listbox.com/member/archive/274414/=now>> >>> <https://www.listbox.com/member/archive/rss/274414/28133750-22ed9730 >>> <https://www.listbox.com/member/archive/rss/274414/28133750-22ed9730>> | >>> Modify >>> <https://www.listbox.com/member/?&; <https://www.listbox.com/member/?&;>> >>> Your Subscription [Powered by Listbox] <http://www.listbox.com >>> <http://www.listbox.com/>> >>> >> >> >> -- >> Andriy Gapon >> ------------------------------------------- openzfs-developer Archives: https://www.listbox.com/member/archive/274414/=now RSS Feed: https://www.listbox.com/member/archive/rss/274414/28015062-cce53afa Modify Your Subscription: https://www.listbox.com/member/?member_id=28015062&id_secret=28015062-f966d51c Powered by Listbox: http://www.listbox.com
