Messages in this thread | | | Date | Mon, 14 Aug 2023 16:03:43 +0800 | From | kernel test robot <> | Subject | [linus:master] [x86/cfi] 9831c6253a: BUG:kernel_NULL_pointer_dereference,address |
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Hello,
kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on:
commit: 9831c6253ace48051189f6d18a15f658f94babc2 ("x86/cfi: Extend ENDBR sealing to kCFI") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[test failed on linus/master 190bf7b14b0cf3df19c059061be032bd8994a597] [test failed on linux-next/master 21ef7b1e17d039053edaeaf41142423810572741]
in testcase: boot
compiler: clang-16 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+---------------------------------------------+------------+------------+ | | be0fffa5ca | 9831c6253a | +---------------------------------------------+------------+------------+ | boot_successes | 24 | 0 | | boot_failures | 0 | 24 | | BUG:kernel_NULL_pointer_dereference,address | 0 | 24 | | Oops:#[##] | 0 | 24 | | RIP:ip_vs_control_init | 0 | 24 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 24 | +---------------------------------------------+------------+------------+
If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <oliver.sang@intel.com> | Closes: https://lore.kernel.org/oe-lkp/202308141050.5a684da8-oliver.sang@intel.com
[ 12.691264][ T1] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 12.691864][ T1] #PF: supervisor write access in kernel mode [ 12.691864][ T1] #PF: error_code(0x0002) - not-present page [ 12.691864][ T1] PGD 0 P4D 0 [ 12.691864][ T1] Oops: 0002 [#1] PREEMPT SMP [ 12.691864][ T1] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G T 6.5.0-rc1-00003-g9831c6253ace #1 bd2f260f97826618a72d724b7d0f852f1c6afa47 [ 12.691864][ T1] RIP: 0010:ip_vs_control_init (net/netfilter/ipvs/ip_vs_ctl.c:?) [ 12.691864][ T1] Code: f6 e8 79 d9 d8 fd ba 00 08 00 00 48 c7 c7 30 da a2 ac 31 f6 e8 66 d9 d8 fd 48 c7 c7 e0 8b bc aa e8 da 3a ab fd 89 c1 c1 f9 1f <21> 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 0f b7 All code ======== 0: f6 e8 imul %al 2: 79 d9 jns 0xffffffffffffffdd 4: d8 fd fdivr %st(5),%st 6: ba 00 08 00 00 mov $0x800,%edx b: 48 c7 c7 30 da a2 ac mov $0xffffffffaca2da30,%rdi 12: 31 f6 xor %esi,%esi 14: e8 66 d9 d8 fd callq 0xfffffffffdd8d97f 19: 48 c7 c7 e0 8b bc aa mov $0xffffffffaabc8be0,%rdi 20: e8 da 3a ab fd callq 0xfffffffffdab3aff 25: 89 c1 mov %eax,%ecx 27: c1 f9 1f sar $0x1f,%ecx 2a:* 21 00 and %eax,(%rax) <-- trapping instruction 2c: 00 00 add %al,(%rax) 2e: 00 90 90 90 90 90 add %dl,-0x6f6f6f70(%rax) 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 66 0f 1f 00 nopw (%rax) 3e: 0f .byte 0xf 3f: b7 .byte 0xb7
Code starting with the faulting instruction =========================================== 0: 21 00 and %eax,(%rax) 2: 00 00 add %al,(%rax) 4: 00 90 90 90 90 90 add %dl,-0x6f6f6f70(%rax) a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 66 0f 1f 00 nopw (%rax) 14: 0f .byte 0xf 15: b7 .byte 0xb7 [ 12.691864][ T1] RSP: 0000:ffffc90000013ba8 EFLAGS: 00010246 [ 12.691864][ T1] RAX: 0000000000000000 RBX: ffffffffab5ef700 RCX: 0000000000000000 [ 12.691864][ T1] RDX: 0000000000000000 RSI: ffff88842fc22f88 RDI: 00000000000001ff [ 12.691864][ T1] RBP: ffffc90000013ee0 R08: fffffffffffa2fe1 R09: ffff88810226c000 [ 12.691864][ T1] R10: 0000000000000000 R11: ffffffffa9176710 R12: ffffffffaa4936e0 [ 12.691864][ T1] R13: 0000000000000000 R14: ffffffffab7388c4 R15: 0000000000000000 [ 12.691864][ T1] FS: 0000000000000000(0000) GS:ffff88842fc00000(0000) knlGS:0000000000000000 [ 12.691864][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 12.691864][ T1] CR2: 0000000000000000 CR3: 0000000058ea8000 CR4: 00000000000406a0 [ 12.691864][ T1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 12.691864][ T1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 12.691864][ T1] Call Trace: [ 12.691864][ T1] <TASK> [ 12.691864][ T1] ? __die_body (arch/x86/kernel/dumpstack.c:421) [ 12.691864][ T1] ? page_fault_oops (arch/x86/mm/fault.c:703) [ 12.691864][ T1] ? __rtnl_unlock (net/core/rtnetlink.c:139) [ 12.691864][ T1] ? exc_page_fault (arch/x86/include/asm/paravirt.h:689 arch/x86/include/asm/irqflags.h:127 arch/x86/mm/fault.c:1494 arch/x86/mm/fault.c:1542) [ 12.691864][ T1] ? asm_exc_page_fault (arch/x86/include/asm/idtentry.h:570) [ 12.691864][ T1] ? __cfi_ip_vs_init (net/netfilter/ipvs/ip_vs_core.c:2387) [ 12.691864][ T1] ? __cfi_ip_vs_dst_event (net/netfilter/ipvs/ip_vs_ctl.c:1767) [ 12.691864][ T1] ? ip_vs_control_init (net/netfilter/ipvs/ip_vs_ctl.c:?) [ 12.691864][ T1] ? ip_vs_control_init (net/netfilter/ipvs/ip_vs_ctl.c:?) [ 12.691864][ T1] ip_vs_init (net/netfilter/ipvs/ip_vs_core.c:2391) [ 12.691864][ T1] ? __cfi_ip_vs_init (net/netfilter/ipvs/ip_vs_core.c:2387) [ 12.691864][ T1] do_one_initcall (init/main.c:1232) [ 12.691864][ T1] do_initcall_level (init/main.c:1293) [ 12.691864][ T1] do_initcalls (init/main.c:1307) [ 12.691864][ T1] kernel_init_freeable (init/main.c:1550) [ 12.691864][ T1] ? __cfi_kernel_init (init/main.c:1429) [ 12.691864][ T1] kernel_init (init/main.c:1439) [ 12.691864][ T1] ret_from_fork (arch/x86/entry/entry_64.S:314) [ 12.691864][ T1] </TASK> [ 12.691864][ T1] Modules linked in: [ 12.691864][ T1] CR2: 0000000000000000 [ 12.691864][ T1] ---[ end trace 0000000000000000 ]--- [ 12.691864][ T1] RIP: 0010:ip_vs_control_init (net/netfilter/ipvs/ip_vs_ctl.c:?) [ 12.691864][ T1] Code: f6 e8 79 d9 d8 fd ba 00 08 00 00 48 c7 c7 30 da a2 ac 31 f6 e8 66 d9 d8 fd 48 c7 c7 e0 8b bc aa e8 da 3a ab fd 89 c1 c1 f9 1f <21> 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 0f b7 All code ======== 0: f6 e8 imul %al 2: 79 d9 jns 0xffffffffffffffdd 4: d8 fd fdivr %st(5),%st 6: ba 00 08 00 00 mov $0x800,%edx b: 48 c7 c7 30 da a2 ac mov $0xffffffffaca2da30,%rdi 12: 31 f6 xor %esi,%esi 14: e8 66 d9 d8 fd callq 0xfffffffffdd8d97f 19: 48 c7 c7 e0 8b bc aa mov $0xffffffffaabc8be0,%rdi 20: e8 da 3a ab fd callq 0xfffffffffdab3aff 25: 89 c1 mov %eax,%ecx 27: c1 f9 1f sar $0x1f,%ecx 2a:* 21 00 and %eax,(%rax) <-- trapping instruction 2c: 00 00 add %al,(%rax) 2e: 00 90 90 90 90 90 add %dl,-0x6f6f6f70(%rax) 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 66 0f 1f 00 nopw (%rax) 3e: 0f .byte 0xf 3f: b7 .byte 0xb7
Code starting with the faulting instruction =========================================== 0: 21 00 and %eax,(%rax) 2: 00 00 add %al,(%rax) 4: 00 90 90 90 90 90 add %dl,-0x6f6f6f70(%rax) a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 66 0f 1f 00 nopw (%rax) 14: 0f .byte 0xf 15: b7 .byte 0xb7
The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20230814/202308141050.5a684da8-oliver.sang@intel.com
-- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
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