Hi Alexander, Thank you for the answer. Unfortunately CentOS goes with these dinosaurs. So we will try to debug the problem in the current one and try to reproduce on the latest kernel. Thanks, Roman. 2018-05-14 18:40 GMT+03:00 Alexander Aring <aring@xxxxxxxxxxxx>: > Hi, > > On Sun, May 13, 2018 at 02:35:07PM +0300, Roman Makhov wrote: >> Hello, >> >> We have a problem with Kernel panic after upgrade from CentOS 7.3 >> (kernel-3.10.0-514.el7) to CentOS 7.4 (kernel-3.10.0-693.21.1.el7). >> It occurs when we have the incoming traffic from other nodes and we >> are performing the re-configuration of IPv6 interfaces. >> >> It is high-availability system without 802.15.4 support. >> >> The log of crash: >> ========================================================= >> #10 [ffff88043fc03cf0] async_page_fault at ffffffff816b7798 >> [exception RIP: ndisc_send_rs+238] >> RIP: ffffffff8166575e RSP: ffff88043fc03da8 RFLAGS: 00010202 >> RAX: 0000000000000002 RBX: ffff88042caa9000 RCX: 0000000000000001 >> RDX: 0000000000000000 RSI: 0000000000000200 RDI: ffffffff816534f7 >> RBP: ffff88043fc03dd0 R8: 0000000000000000 R9: ffffffff81e9f1c0 >> R10: 0000000000000002 R11: ffff88043fc03da8 R12: 0000000000000008 >> R13: 0000000000000006 R14: ffff88043fc03de0 R15: ffffffff81772410 >> ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 >> #11 [ffff88043fc03da0] ndisc_send_rs at ffffffff81665704 >> ========================================================= >> >> I see that crash points on ndisc.h, it is ndisc_ops_opt_addr_space() >> in function: >> ========================================================= >> crash> kmem ffffffff8166575e >> ffffffff8166575e (T) ndisc_send_rs+238 >> /usr/src/debug/kernel-3.10.0-693.21.1.el7/linux-3.10.0-693.21.1.el7.x86_64/include/net/ndisc.h: >> 251 >> >> PAGE PHYSICAL MAPPING INDEX CNT FLAGS >> ffffea0000059940 1665000 0 0 1 1fffff00000400 reserved >> crash> >> ========================================================= >> >> I checked the difference between 514 and 693 kernels is in the patch >> https://patchwork.kernel.org/patch/9179229/ . >> >> Any suggesions about what I am doing wrong are welcome. >> > > Me as original author of this patch, > > I cannot help you with such a dinosaurs kernel. Please try it with the > latest one and check if the problem still exists. > > - Alex -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
