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Date: Sun, 9 Aug 2020 14:36:00 +0800 From: kernel test robot <rong.a.chen@...el.com> To: Richard Guy Briggs <rgb@...hat.com> Cc: Paul Moore <paul@...l-moore.com>, LKML <linux-kernel@...r.kernel.org>, lkp@...ts.01.org Subject: [audit] c4dad0aab3: canonical_address#:#[##] Greeting, FYI, we noticed the following commit (built with clang-12): commit: c4dad0aab3fca0c1f0baa4cc84b6ec91b7ebf426 ("audit: tidy and extend netfilter_cfg x_tables") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master in testcase: trinity with following parameters: runtime: 300s test-description: Trinity is a linux system call fuzz tester. test-url: http://codemonkey.org.uk/projects/trinity/ on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): +---------------------------------------------+------------+------------+ | | 9d2161bed4 | c4dad0aab3 | +---------------------------------------------+------------+------------+ | boot_successes | 0 | 0 | | boot_failures | 8 | 8 | | BUG:unable_to_handle_page_fault_for_address | 8 | 8 | | Oops:#[##] | 8 | 8 | | RIP:slob_alloc | 8 | | | Kernel_panic-not_syncing:Fatal_exception | 8 | 8 | | canonical_address#:#[##] | 0 | 8 | | RIP:copy_user_generic_unrolled | 0 | 8 | | BUG:kernel_NULL_pointer_dereference,address | 0 | 8 | +---------------------------------------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <rong.a.chen@...el.com> [ 3.977763] BUG: unable to handle page fault for address: ffff88842c3e6002 [ 3.978199] #PF: supervisor write access in kernel mode [ 3.978520] #PF: error_code(0x0002) - not-present page [ 3.978836] PGD 6401067 P4D 6401067 PUD f000ff53f000ff53 [ 3.978846] general protection fault, probably for non-canonical address 0xa000328280002b08: 0000 [#1] DEBUG_PAGEALLOC PTI [ 3.979870] CPU: 0 PID: 0 Comm: swapper Not tainted 5.7.0-rc1-00004-gc4dad0aab3fca #1 [ 3.980345] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 3.980865] RIP: 0010:copy_user_generic_unrolled+0x83/0xb0 [ 3.981201] Code: 4c 8b 5e 38 4c 89 47 20 4c 89 4f 28 4c 89 57 30 4c 89 5f 38 48 8d 76 40 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 <4c> 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 [ 3.982338] RSP: 0000:ffffffff838dfa88 EFLAGS: 00010002 [ 3.982656] RAX: ffffffff811fa36b RBX: ffffffff83a82880 RCX: 0000000000000001 [ 3.983090] RDX: 0000000000000000 RSI: a000328280002b08 RDI: ffffffff838dfac0 [ 3.983537] RBP: 0000000000000093 R08: 3030306620445550 R09: 3030306633356666 [ 3.983972] R10: 6633356666303030 R11: 2033356666303030 R12: ffffffff838dfac0 [ 3.984406] R13: ffffffffffffffff R14: a000328280002b08 R15: 0000000000000008 [ 3.984841] FS: 0000000000000000(0000) GS:ffffffff83a99000(0000) knlGS:0000000000000000 [ 3.985333] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.985684] CR2: ffff88842c3e6002 CR3: 0000000003a7a000 CR4: 00000000000406b0 [ 3.986121] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 3.986556] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 3.986996] Call Trace: [ 3.987153] Modules linked in: [ 3.987349] random: get_random_bytes called from print_oops_end_marker+0x28/0x52 with crng_init=0 [ 3.987352] ---[ end trace 79cfc4eb7b4892f4 ]--- To reproduce: # build kernel cd linux cp config-5.7.0-rc1-00004-gc4dad0aab3fca .config make HOSTCC=clang-12 CC=clang-12 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage git clone https://github.com/intel/lkp-tests.git cd lkp-tests bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email Thanks, Rong Chen View attachment "config-5.7.0-rc1-00004-gc4dad0aab3fca" of type "text/plain" (136939 bytes) View attachment "job-script" of type "text/plain" (4373 bytes) Download attachment "dmesg.xz" of type "application/x-xz" (116088 bytes)
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