Messages in this thread | | | Subject | Re: [PATCH v3] riscv: vdso: fix NULL deference in vdso_join_timens() when vfork | Date | Thu, 13 Oct 2022 12:45:36 -0700 | From | Palmer Dabbelt <> |
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On Sat, 24 Sep 2022 15:07:37 +0800, Jisheng Zhang wrote: > Testing tools/testing/selftests/timens/vfork_exec.c got below > kernel log: > > [ 6.838454] Unable to handle kernel access to user memory without uaccess routines at virtual address 0000000000000020 > [ 6.842255] Oops [#1] > [ 6.842871] Modules linked in: > [ 6.844249] CPU: 1 PID: 64 Comm: vfork_exec Not tainted 6.0.0-rc3-rt15+ #8 > [ 6.845861] Hardware name: riscv-virtio,qemu (DT) > [ 6.848009] epc : vdso_join_timens+0xd2/0x110 > [ 6.850097] ra : vdso_join_timens+0xd2/0x110 > [ 6.851164] epc : ffffffff8000635c ra : ffffffff8000635c sp : ff6000000181fbf0 > [ 6.852562] gp : ffffffff80cff648 tp : ff60000000fdb700 t0 : 3030303030303030 > [ 6.853852] t1 : 0000000000000030 t2 : 3030303030303030 s0 : ff6000000181fc40 > [ 6.854984] s1 : ff60000001e6c000 a0 : 0000000000000010 a1 : ffffffff8005654c > [ 6.856221] a2 : 00000000ffffefff a3 : 0000000000000000 a4 : 0000000000000000 > [ 6.858114] a5 : 0000000000000000 a6 : 0000000000000008 a7 : 0000000000000038 > [ 6.859484] s2 : ff60000001e6c068 s3 : ff6000000108abb0 s4 : 0000000000000000 > [ 6.860751] s5 : 0000000000001000 s6 : ffffffff8089dc40 s7 : ffffffff8089dc38 > [ 6.862029] s8 : ffffffff8089dc30 s9 : ff60000000fdbe38 s10: 000000000000005e > [ 6.863304] s11: ffffffff80cc3510 t3 : ffffffff80d1112f t4 : ffffffff80d1112f > [ 6.864565] t5 : ffffffff80d11130 t6 : ff6000000181fa00 > [ 6.865561] status: 0000000000000120 badaddr: 0000000000000020 cause: 000000000000000d > [ 6.868046] [<ffffffff8008dc94>] timens_commit+0x38/0x11a > [ 6.869089] [<ffffffff8008dde8>] timens_on_fork+0x72/0xb4 > [ 6.870055] [<ffffffff80190096>] begin_new_exec+0x3c6/0x9f0 > [ 6.871231] [<ffffffff801d826c>] load_elf_binary+0x628/0x1214 > [ 6.872304] [<ffffffff8018ee7a>] bprm_execve+0x1f2/0x4e4 > [ 6.873243] [<ffffffff8018f90c>] do_execveat_common+0x16e/0x1ee > [ 6.874258] [<ffffffff8018f9c8>] sys_execve+0x3c/0x48 > [ 6.875162] [<ffffffff80003556>] ret_from_syscall+0x0/0x2 > [ 6.877484] ---[ end trace 0000000000000000 ]--- > > [...]
Applied, thanks!
[1/1] riscv: vdso: fix NULL deference in vdso_join_timens() when vfork https://git.kernel.org/palmer/c/a8616d2dc193
Best regards, -- Palmer Dabbelt <palmer@rivosinc.com>
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