On Sat, Feb 22, 2025 at 01:06:02PM +0100, Alexander Leidinger wrote: > Am 2025-02-21 22:31, schrieb Mark Johnston: > > On Thu, Feb 20, 2025 at 10:27:28AM +0100, Alexander Leidinger wrote: > > > Hi, > > > > > > I get this backtrace: > > > ---snip--- > > > [102] panic: invalid local group size 16 and count 16 > > > [102] cpuid = 17 > > > [102] time = 1740041984 > > > [102] KDB: stack backtrace: > > > [102] db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame > > > 0xfffffe07453a5b80 > > > [102] vpanic() at vpanic+0x136/frame 0xfffffe07453a5cb0 > > > [102] panic() at panic+0x43/frame 0xfffffe07453a5d10 > > > [102] in_pcblbgroup_insert() at in_pcblbgroup_insert+0xaa/frame > > > 0xfffffe07453a5d30 > > > [102] in_pcblisten() at in_pcblisten+0x92/frame 0xfffffe07453a5d50 > > > [102] tcp_usr_listen() at tcp_usr_listen+0x18a/frame > > > 0xfffffe07453a5db0 > > > [102] solisten() at solisten+0x47/frame 0xfffffe07453a5dd0 > > > [102] kern_listen() at kern_listen+0x3f/frame 0xfffffe07453a5e00 > > > [102] amd64_syscall() at amd64_syscall+0x15b/frame 0xfffffe07453a5f30 > > > [102] fast_syscall_common() at fast_syscall_common+0xf8/frame > > > 0xfffffe07453a5f30 > > > ---snip--- > > > > > > This is with head updated at 2025-02-20-080119 CET. The previous > > > world is > > > from 1 month ago (2025-01-22-120655). > > > > I believe this would be fixed by https://reviews.freebsd.org/D49100 > > So I was just luck that this works ATM... or unlucky that I got a panic on > the previous try. > > > Please note that I haven't tested it yet (currently running it through > > the regression test suite to start). > > As the config and number of applications/jails/services started didn't > change, any idea how to provoke this race condition on a system with some > real applications (instead of test cases; if you need an independent > validation)? A reboot loop until it happens is not really something I want > to do on this system.
I added a test case which triggers the same panic to the review. I don't have any suggestions for how to trigger it in your setup, I just offer the patch to keep your system stable until the next update.
