Date: Wed, 20 Jun 2018 11:09:57 +0200 From: Peter Holm <peter@holm.cc> To: current@freebsd.org Subject: Page fault in udp_usrreq.c:823 Message-ID: <20180620090957.GA130@x2.osted.lan>
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20180620 10:32:47 all (1/1): udp.sh Kernel page fault with the following non-sleepable locks held: shared rw udpinp (udpinp) r = 0 (0xfffff80bbc808d78) locked @ netinet/in_pcb.c:2398 stack backtrace: #0 0xffffffff80c00733 at witness_debugger+0x73 #1 0xffffffff80c01b11 at witness_warn+0x461 #2 0xffffffff81075763 at trap_pfault+0x53 #3 0xffffffff81074d7a at trap+0x2ba #4 0xffffffff8105076c at calltrap+0x8 #5 0xffffffff80dd21b0 at udp_ctlinput+0x50 #6 0xffffffff80d3081d at icmp_input+0x96d #7 0xffffffff80d316d7 at ip_input+0x3f7 #8 0xffffffff80cc0a92 at netisr_dispatch_src+0xa2 #9 0xffffffff80ca3ebe at ether_demux+0x16e #10 0xffffffff80ca5377 at ether_nh_input+0x427 #11 0xffffffff80cc0a92 at netisr_dispatch_src+0xa2 #12 0xffffffff80ca437f at ether_input+0x8f #13 0xffffffff80cbc500 at iflib_rxeof+0xc90 #14 0xffffffff80cb6b6f at _task_fn_rx+0x7f #15 0xffffffff80bdd209 at gtaskqueue_run_locked+0x139 #16 0xffffffff80bdcf88 at gtaskqueue_thread_loop+0x88 #17 0xffffffff80b54514 at fork_exit+0x84 Fatal trap 12: page fault while in kernel mode cpuid = 10; apic id = 0a fault virtual address = 0x8 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80dd2423 stack pointer = 0x0:0xfffffe00004a5500 frame pointer = 0x0:0xfffffe00004a55a0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 0 (if_io_tqg_10) [ thread pid 0 tid 100069 ] Stopped at udp_common_ctlinput+0x263: cmpq $0,0x8(%rax) db> Details @ https://people.freebsd.org/~pho/stress/log/udp_usrreq.txt -- Peter
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