This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1881263 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: bionic -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1881263 Title: bpf_get_stack from test_verifier in ubuntu_bpf failed on Bionic 5.0 Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Incomplete Bug description: Issue found on 5.0.0-49.53~18.04.1-generic in proposed, but passed with 5.0.0-48.52~18.04.1-generic #724/p bpf_get_stack return R0 within range FAIL Failed to load prog 'Success'! 0: (bf) r6 = r1 1: (7a) *(u64 *)(r10 -8) = 0 2: (bf) r2 = r10 3: (07) r2 += -8 4: (18) r1 = 0xffffa0ca73b8d400 6: (85) call bpf_map_lookup_elem#1 7: (15) if r0 == 0x0 goto pc+28 R0=map_value(id=0,off=0,ks=8,vs=48,imm=0) R6=ctx(id=0,off=0,imm=0) R10=fp0,call_-1 fp-8=mmmmmmmm 8: (bf) r7 = r0 9: (b7) r9 = 48 10: (bf) r1 = r6 11: (bf) r2 = r7 12: (b7) r3 = 48 13: (b7) r4 = 256 14: (85) call bpf_get_stack#67 R0=map_value(id=0,off=0,ks=8,vs=48,imm=0) R1_w=ctx(id=0,off=0,imm=0) R2_w=map_value(id=0,off=0,ks=8,vs=48,imm=0) R3_w=inv48 R4_w=inv256 R6=ctx(id=0,off=0,imm=0) R7_w=map_value(id=0,off=0,ks=8,vs=48,imm=0) R9_w=inv48 R10=fp0,call_-1 fp-8=mmmmmmmm 15: (b7) r1 = 0 16: (bf) r8 = r0 17: (67) r8 <<= 32 18: (c7) r8 s>>= 32 19: (cd) if r1 s< r8 goto pc+16 R0=inv(id=0,umax_value=48,var_off=(0x0; 0x3f)) R1=inv0 R6=ctx(id=0,off=0,imm=0) R7=map_value(id=0,off=0,ks=8,vs=48,imm=0) R8=inv0 R9=inv48 R10=fp0,call_-1 fp-8=mmmmmmmm 20: (1f) r9 -= r8 21: (bf) r2 = r7 22: (0f) r2 += r8 23: (bf) r1 = r9 24: (67) r1 <<= 32 25: (c7) r1 s>>= 32 26: (bf) r3 = r2 27: (0f) r3 += r1 28: (bf) r1 = r7 29: (b7) r5 = 48 30: (0f) r1 += r5 31: (3d) if r3 >= r1 goto pc+4 R0=inv(id=0,umax_value=48,var_off=(0x0; 0x3f)) R1=map_value(id=0,off=48,ks=8,vs=48,imm=0) R2=map_value(id=0,off=0,ks=8,vs=48,imm=0) R3=map_value(id=0,off=48,ks=8,vs=48,imm=0) R5=inv48 R6=ctx(id=0,off=0,imm=0) R7=map_value(id=0,off=0,ks=8,vs=48,imm=0) R8=inv0 R9=inv48 R10=fp0,call_-1 fp-8=mmmmmmmm 32: (bf) r1 = r6 33: (bf) r3 = r9 34: (b7) r4 = 0 35: (85) call bpf_get_stack#67 R0=inv(id=0,umax_value=48,var_off=(0x0; 0x3f)) R1_w=ctx(id=0,off=0,imm=0) R2=map_value(id=0,off=0,ks=8,vs=48,imm=0) R3_w=inv48 R4_w=inv0 R5=inv48 R6=ctx(id=0,off=0,imm=0) R7=map_value(id=0,off=0,ks=8,vs=48,imm=0) R8=inv0 R9=inv48 R10=fp0,call_-1 fp-8=mmmmmmmm 36: (95) exit from 35 to 36: R0=inv(id=0,umin_value=18446744071562067968,var_off=(0xffffffff80000000; 0x7fffffff)) R6=ctx(id=0,off=0,imm=0) R7=map_value(id=0,off=0,ks=8,vs=48,imm=0) R8=inv0 R9=inv48 R10=fp0,call_-1 fp-8=mmmmmmmm 36: (95) exit from 31 to 36: safe from 19 to 36: safe from 14 to 15: R0=inv(id=0,umin_value=18446744071562067968,var_off=(0xffffffff80000000; 0x7fffffff)) R6=ctx(id=0,off=0,imm=0) R7=map_value(id=0,off=0,ks=8,vs=48,imm=0) R9=inv48 R10=fp0,call_-1 fp-8=mmmmmmmm 15: (b7) r1 = 0 16: (bf) r8 = r0 17: (67) r8 <<= 32 18: (c7) r8 s>>= 32 19: (cd) if r1 s< r8 goto pc+16 R0=inv(id=0,umin_value=18446744071562067968,var_off=(0xffffffff80000000; 0x7fffffff)) R1=inv0 R6=ctx(id=0,off=0,imm=0) R7=map_value(id=0,off=0,ks=8,vs=48,imm=0) R8=inv(id=0,umin_value=18446744071562067968,var_off=(0xffffffff80000000; 0x7fffffff)) R9=inv48 R10=fp0,call_-1 fp-8=mmmmmmmm 20: (1f) r9 -= r8 21: (bf) r2 = r7 22: (0f) r2 += r8 value -2147483648 makes map_value pointer be out of bounds With 5.0.0-48.52~18.04.1-generic the test will pass: #724/p bpf_get_stack return R0 within range OK To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1881263/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp