Hi Guang Wu, On Sat, Mar 25, 2023 at 03:25:34PM +0800, Guangwu Zhang wrote: > Hello, > > We found this kernel panic issue with upstream kernel 6.3.0-rc3 and > it's 100% reproduced, let me know if you need more info/testing, > thanks > > kernel repo : https://github.com/torvalds/linux.git > reproducer : run the testing from git://git.kernel.dk/liburing > > [ 1089.762678] Running test recv-msgall-stream.t: > [ 1089.922127] Running test recv-multishot.t: > [ 1090.231772] Running test reg-hint.t: > [ 1090.282612] general protection fault, probably for non-canonical > address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI > [ 1090.294014] KASAN: null-ptr-deref in range The issue is fixed by: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=io_uring-6.3&id=02a4d923e4400a36d340ea12d8058f69ebf3a383 since liburing merges test case quicker than kernel fix, :-) BTW, please report io_uring issue on io-uring@xxxxxxxxxxxxxxx next time. thanks, Ming