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Date: Fri, 30 Sep 2016 09:59:35 +0800 From: kernel test robot <xiaolong.ye@...el.com> To: Greg Kroah-Hartman <gregkh@...gle.com> Cc: LKML <linux-kernel@...r.kernel.org>, Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org Subject: [lkp] [staging] d4f56b47a8: divide error: 0000 [#1] PREEMPT SMP KASAN FYI, we noticed the following commit: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master commit d4f56b47a8fac90b15adfae80a42a2735d6b3213 ("staging: greybus: Add drivers/staging/greybus to the build") in testcase: trinity with following parameters: runtime: 300s Trinity is a linux system call fuzz tester. on test machine: qemu-system-x86_64 -enable-kvm -m 512M caused below changes: +------------------------------------------------+------------+------------+ | | 526dec0642 | d4f56b47a8 | +------------------------------------------------+------------+------------+ | boot_successes | 5 | 0 | | boot_failures | 8 | 12 | | calltrace:SyS_open | 8 | | | invoked_oom-killer:gfp_mask=0x | 1 | | | Mem-Info | 1 | | | IP-Config:Auto-configuration_of_network_failed | 2 | | | BUG:kernel_hang_in_test_stage | 6 | | | divide_error:#[##]PREEMPT_SMP_KASAN | 0 | 12 | | RIP:gb_timesync_init | 0 | 12 | | calltrace:gb_init | 0 | 12 | | Kernel_panic-not_syncing:Fatal_exception | 0 | 12 | +------------------------------------------------+------------+------------+ [ 16.795543] FPGA image file name: xlinx_fpga_firmware.bit [ 16.796615] GPIO INIT FAIL!! [ 16.799462] Unable to find a compatible ARMv7 timer [ 16.799948] divide error: 0000 [#1] PREEMPT SMP KASAN [ 16.800459] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-rc6-02364-gd4f56b4 #29 [ 16.801197] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014 [ 16.802055] task: ffff88001a124000 task.stack: ffff88001a140000 [ 16.802645] RIP: 0010:[<ffffffff82f67e97>] [<ffffffff82f67e97>] gb_timesync_init+0x35/0x78 [ 16.803534] RSP: 0000:ffff88001a147e58 EFLAGS: 00010246 [ 16.804040] RAX: 00038d7ea4c68000 RBX: 0000000000000000 RCX: ffffffff8114ea41 [ 16.804716] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88001a124c2c [ 16.805393] RBP: ffff88001a147e60 R08: 0000000000000001 R09: 0000000000000000 [ 16.806066] R10: ffff88001a147d70 R11: ffffffff83cddb35 R12: ffffffff82f67cc6 [ 16.806744] R13: 0000000000000000 R14: ffffffff82fbe8b0 R15: ffffffff82fbe8f8 [ 16.807421] FS: 0000000000000000(0000) GS:ffff88001a400000(0000) knlGS:0000000000000000 [ 16.808185] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 16.808728] CR2: 0000000000000000 CR3: 0000000002c0a000 CR4: 00000000000006b0 [ 16.809405] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 16.810078] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 16.810752] Stack: [ 16.811058] 0000000000000000 ffff88001a147e78 ffffffff82f67d45 00000000ffffffff [ 16.811819] ffff88001a147ee8 ffffffff82efe339 ffffffff82b89800 0000000000000012 [ 16.812576] ffff88001fa80fe5 0000000000000000 ffffffff82b0495f 0000000000000006 [ 16.813332] Call Trace: [ 16.813577] [<ffffffff82f67d45>] gb_init+0x7f/0xb3 [ 16.814045] [<ffffffff82efe339>] do_one_initcall+0x9a/0x12c [ 16.814588] [<ffffffff82efe57b>] kernel_init_freeable+0x1b0/0x246 [ 16.815180] [<ffffffff82404a51>] kernel_init+0xc/0x108 [ 16.815679] [<ffffffff8240e40f>] ret_from_fork+0x1f/0x40 [ 16.816197] [<ffffffff82404a45>] ? rest_init+0x13c/0x13c [ 16.816724] Code: 85 c0 89 c3 74 12 48 c7 c7 64 ae b4 82 31 c0 e8 40 b5 27 fe 89 d8 eb 53 e8 cb 55 23 ff 31 d2 89 c6 48 b8 00 80 c6 a4 7e 8d 03 00 <48> f7 f6 31 d2 48 c7 c7 84 ae b4 82 48 89 35 de 65 64 01 48 89 [ 16.819509] RIP [<ffffffff82f67e97>] gb_timesync_init+0x35/0x78 [ 16.820094] RSP <ffff88001a147e58> [ 16.820548] ---[ end trace c73ba0f929e81492 ]--- [ 16.821001] Kernel panic - not syncing: Fatal exception To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Xiaolong View attachment "config-4.8.0-rc6-02364-gd4f56b4" of type "text/plain" (109809 bytes) View attachment "job-script" of type "text/plain" (3655 bytes) Download attachment "dmesg.xz" of type "application/octet-stream" (14232 bytes) View attachment "job.yaml" of type "text/plain" (2860 bytes)
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