* Jiri Olsa <olsajiri@xxxxxxxxx> [240614 03:54]: > On Fri, Jun 14, 2024 at 01:40:54AM +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 > > > > (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. > > +1, bpf selftests are failing for me because mmap fails with: > mmap(0x7f9361bc9000, 4096, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED, 4, 0) = -1 EBUSY (Device or resource busy) > > did not get to the cause, but reverting the 1c29a32ce65f fixes it for me > Thanks for the information, this sounds like a much easier way to recreate the issue. Regards, Liam
