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 10kpa0tw KeC4/xlwTyq7ht4/vqcLe61lgRx/JpxS792gDY+re68PuN8x24Bon7Su6A4cccuzbdnc0N03TWNvOHjdSbpAjUICfl6x0cRDcHsA+IH+JfVf5+CYEV93phn+NrQNCa+6nvQi8B4mhWyjja9+P9Li8uIcMJ5ISjAQt8/kd9jA1m6UzSQE8YqrIfCjReH1PtrPsRVfmGWCbHUGqGx76qFVDa0BKxrwch467Pj9mSMhnD2K4E/GheSIYoIKC5puYUEdH0QD/09yM3LBymcSr+7qxDwePntACpeK+IHKjmDYt3zB5RmfRJsxTHQcu2myoj8pSug2J4NXtq73H8MHaa7S7a0DjoyOmbmh7gKKPNSnJmrLFPxumhX74GQZmWdwwYYhKjyxEiyCTNmDCuoVcneWnqdDjEU0katGoYCdxudqyEGUiBpITDp1IiKEZln8mCRXzTWsF7Pv1Z7eC9V8= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: * Andrew Morton [240613 20:03]: > On Fri, 14 Jun 2024 01:40:54 +0200 Bert Karwatzki wrote: > > > Since linux-next-20240613 firefox-esr crashes after several minutes of browsing > > giving the following error messages in dmesg: > > [ T2343] BUG: Bad rss-counter state mm:00000000babe0c39 type:MM_ANONPAGES val:86 > > [ T4063] show_signal_msg: 16 callbacks suppressed > > [ T4063] Isolated Web Co[4063]: segfault at 396d1686c000 ip 0000396d1686c000 sp > > 00007ffd767b30a8 error 14 likely on CPU 7 (core 3, socket 0) > > [ T4063] Code: Unable to access opcode bytes at 0x396d1686bfd6. > > [ T4211] BUG: Bad rss-counter state mm:00000000cd9fc541 type:MM_ANONPAGES > > val:817 > > [ T3798] BUG: Bad rss-counter state mm:00000000432d87c2 type:MM_ANONPAGES > > val:181 > > [ T5548] BUG: Bad rss-counter state mm:00000000034aa27a type:MM_ANONPAGES > > val:242 > > [ T3823] BUG: Bad rss-counter state mm:0000000099734197 type:MM_ANONPAGES > > val:137 > > [ T1] BUG: Bad rss-counter state mm:000000005e5e2f2f type:MM_ANONPAGES val:28 > > Let's hope Linus doesn't read this. Why are we nuking the entire > planet just because some counter went wonky? I think I know what's going on, and it's more than just the counters being off here. The counters are the symptom of what is happening. > > > (these are the error messages of several crashes and the error seems to affect > > other processes, too (T1)) > > > > The crash can be provoked to appear in ~1min by opening large numbers of tabs in > > firefox-esr (by holding pressing ctrl+t for some time). With this I bisected the > > error to commit "1c29a32ce65f mm/mmap: use split munmap calls for MAP_FIXED" and > > reverting this commit in linux-next-20240613 fixes the issue for me. > > Thanks, that must have taken a lot of time. Yes, thank you for all that work and apologies in creating this frustrating situation. Andrew, please drop the set from your branch. I need to write some more tests, but I suspect I will need to do some work around the vma_merge() function, which is never a fun endeavor. Regards, Liam