https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238789
--- Comment #5 from Greg Becker <g...@codeconcepts.com> --- Sure Kubilay, here's my backtrace. It's from a kernel module I am working on that I have not yet published. I hit this easily with GENERIC, but never hit it when running with the patch I supplied: panic: mutex so_rcv not owned at /usr/src/sys/kern/uipc_socket.c:2359 cpuid = 11 time = 1561372118 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2c/frame 0xfffffe012015e5b0 kdb_backtrace() at kdb_backtrace+0x53/frame 0xfffffe012015e660 vpanic() at vpanic+0x265/frame 0xfffffe012015e720 doadump() at doadump/frame 0xfffffe012015e780 __mtx_assert() at __mtx_assert+0x145/frame 0xfffffe012015e800 soreceive_stream() at soreceive_stream+0x963/frame 0xfffffe012015e8b0 soreceive() at soreceive+0x102/frame 0xfffffe012015e910 krpc_recv_tcp() at krpc_recv_tcp+0x55/frame 0xfffffe012015e9a0 svc_rcv_receive() at svc_rcv_receive+0x1c/frame 0xfffffe012015e9e0 tpool_run() at tpool_run+0x92/frame 0xfffffe012015ea30 fork_exit() at fork_exit+0x13b/frame 0xfffffe012015eab0 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe012015eab0 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic [ thread pid 0 tid 101260 ] Stopped at breakpoint+0x5: popq %rbp I think what is happening is that I am post-processing a rcv soupcall, but the non-blocking call to sblock() in soreceive() loses due to a race with an asynchronously running call to soshutdown(SHUT_RD) from my module unload code. But I have not yet verified that... I'm using GENERIC with the following options: options CONSPEED=115200 options BREAK_TO_DEBUGGER options DDB options SOCKBUF_DEBUG options INVARIANTS options INVARIANT_SUPPORT FreeBSD sm1.cc.codeconcepts.com 12.0-STABLE FreeBSD 12.0-STABLE #31 r349288M: Tue Jun 25 07:19:16 CDT 2019 g...@sm1.cc.codeconcepts.com:/usr/obj/usr/src/amd64.amd64/sys/SM1 amd64 -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
