Date: Thu, 27 Jun 2019 11:51:56 +0200 From: Harry Schmalzbauer <freebsd@omnilan.de> To: freebsd-current@freebsd.org Subject: =?UTF-8?Q?kern.panic=5freboot=5fwait=5ftime_=e2=80=93_no_effect_on_?= =?UTF-8?Q?KDB-less_machine?= Message-ID: <eda3ea3c-463f-e896-60dc-af3cf68b6209@omnilan.de>
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Hello, currently, I have one stable/12-i386 machine panicing as ESXi guest. The kernel was built without KDB. Hence, I set debug.debugger_on_panic=0 in loader.conf. Additionally, I set kern.panic_reboot_wait_time=20 But after the panic, the memory is dumped to swap and an immediate reboot happens. Far too quick to read a single word of the kernel message (1G RAM only, quick ssd swap). How can I delay the auto-reboot? Does kern.panic_reboot_wait_time only affect KDB behaviour? Thanks, -harry P.S.: I guess the following isn't really a VM problem, but a bug in my patched vmxnet3 driver (which happens with ALTQ usage, ALTQ is the reason I can't use if_vmx(4)): #4 0x00e329fd in vm_fault_hold (map=0x1edc000, vaddr=0, fault_type=<value optimized out>, fault_flags=0, m_hold=0x0) at /usr/local/share/deploy-tools/RELENG_12/src/sys/vm/vm_fault.c:600 #5 0x00e303fa in vm_fault (map=0x1edc000, vaddr=0, fault_type=1 '\001', fault_flags=0) at /usr/local/share/deploy-tools/RELENG_12/src/sys/vm/vm_fault.c:550 #6 0x00ea6c6e in trap_pfault (frame=<value optimized out>, usermode=0, eva=40) at /usr/local/share/deploy-tools/RELENG_12/src/sys/i386/i386/trap.c:884 #7 0x00ea630c in trap (frame=0x471dee8) at /usr/local/share/deploy-tools/RELENG_12/src/sys/i386/i386/trap.c:521 #8 0xffc0316d in ?? () #9 0x013e663a in vmxnet3_start () from /boot/modules/vmxnet3.ko #10 0x00c0921a in if_transmit (ifp=0x5241000, m=0x18d7cd00) at /usr/local/share/deploy-tools/RELENG_12/src/sys/net/if.c:4048 #11 0x00c0ca82 in ether_output_frame (ifp=0x5241000, m=<value optimized out>) at /usr/local/share/deploy-tools/RELENG_12/src/sys/net/if_ethersubr.c:487 #12 0x00c0c99c in ether_output (ifp=0x5241000, m=<value optimized out>, dst=0x471e174, ro=0x471e160) at /usr/local/share/deploy-tools/RELENG_12/src/sys/net/if_ethersubr.c:440 #13 0x00c5dc6c in ip_output (m=<value optimized out>, opt=0x0, ro=<value optimized out>, flags=1, imo=<value optimized out>, inp=0x0) at /usr/local/share/deploy-tools/RELENG_12/src/sys/netinet/ip_output.c:660 #14 0x00c5a436 in ip_forward (m=0x18d7cd00, srcrt=0) at /usr/local/share/deploy-tools/RELENG_12/src/sys/netinet/ip_input.c:1069 #15 0x00c59ce7 in ip_input (m=<value optimized out>) at RELENG_12/src/sys/i386/include/counter.h:59 #16 0x00c25f2d in netisr_dispatch_src (proto=1, source=0, m=0x18d7cd00) at /usr/local/share/deploy-tools/RELENG_12/src/sys/net/netisr.c:1122 #17 0x00c26230 in netisr_dispatch (proto=1, m=0x18d7cd00) at /usr/local/share/deploy-tools/RELENG_12/src/sys/net/netisr.c:1213 #18 0x00c0cbc1 in ether_demux (ifp=0x5230c00, m=<value optimized out>) at /usr/local/share/deploy-tools/RELENG_12/src/sys/net/if_ethersubr.c:879 #19 0x00c0dc17 in ether_nh_input (m=0x18d7cd00) at /usr/local/share/deploy-tools/RELENG_12/src/sys/net/if_ethersubr.c:667 #20 0x00c25f2d in netisr_dispatch_src (proto=5, source=0, m=0x18d7cd00) at /usr/local/share/deploy-tools/RELENG_12/src/sys/net/netisr.c:1122
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