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Groups > linux.debian.kernel > #89691
| From | mc36 <csmate@nop.hu> |
|---|---|
| Newsgroups | linux.debian.bugs.dist, linux.debian.kernel |
| Subject | Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space |
| Date | 2025-10-21 15:10 +0200 |
| Message-ID | <LIkhH-6Rxq-13@gated-at.bofh.it> (permalink) |
| References | (4 earlier) <LI5LH-6HIS-1@gated-at.bofh.it> <LIkhH-6Rxq-15@gated-at.bofh.it> <LIkhH-6Rxq-17@gated-at.bofh.it> <LHJBv-6stc-1@gated-at.bofh.it> <LIkhH-6Rxq-17@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Cross-posted to 2 groups.
hi, you both are crazy good, thank you so much for both of your effort! :) if you're in a need for some more complicated xsk tests, just let me know, freertr have a dataplane and a socat-alike tool with an xsk based packetio for a while.... br, cs On 10/21/25 14:25, Jason Xing wrote: > On Tue, Oct 21, 2025 at 6:52 PM Fernando Fernandez Mancera > <fmancera@suse.de> wrote: >> >> >> >> On 10/20/25 11:31 PM, mc36 wrote: >>> hi, >>> >>> On 10/20/25 11:04, Jason Xing wrote: >>>> >>>> I followed your steps you attached in your code: >>>> ////// gcc xskInt.c -lxdp >>>> ////// sudo ip link add veth1 type veth >>>> ////// sudo ip link set veth0 up >>>> ////// sudo ip link set veth1 up >>> >>> ip link set dev veth1 address 3a:10:5c:53:b3:5c >>> >>>> ////// sudo ./a.out >>>> >>> that will do the trick on a recent kerlek.... >>> >>> its the destination mac in the c code.... >>> >>> ps: chaining in the original reporter from the fedora land..... >>> >>> >>> have a nice day, >>> >>> cs >>> >>> >> >> hi, FWIW I have reproduced this and I bisected it, issue was introduced >> at 30f241fcf52aaaef7ac16e66530faa11be78a865 - working on a patch. > > Exactly. I simply reverted it and its dependencies and didn't see any > crash then. It was newly introduced, hopefully it will not bring much > trouble. As I replied before, I will take a look tomorrow morning. > > Thanks, > Jason
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Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space mc36 <csmate@nop.hu> - 2025-10-20 06:50 +0200
Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space Jason Xing <kerneljasonxing@gmail.com> - 2025-10-20 08:50 +0200
Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space mc36 <csmate@nop.hu> - 2025-10-20 09:20 +0200
Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space mc36 <csmate@nop.hu> - 2025-10-20 11:00 +0200
Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space Jason Xing <kerneljasonxing@gmail.com> - 2025-10-20 11:10 +0200
Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space mc36 <csmate@nop.hu> - 2025-10-20 12:00 +0200
Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space mc36 <csmate@nop.hu> - 2025-10-20 23:40 +0200
Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space mc36 <csmate@nop.hu> - 2025-10-21 15:10 +0200
Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space mc36 <csmate@nop.hu> - 2025-10-21 15:50 +0200
Bug#1118437: null pointer dereference in interrupt after receiving an ip packet on veth from xsk from user space mc36 <csmate@nop.hu> - 2025-10-21 17:40 +0200
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