On Wed, Jun 21, 2023, at 16:01, Naresh Kamboju wrote:
While running LTP fs testing on x86_64 device the following kernel BUG: notice with Linux next-20230621.
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
Steps to reproduce:
# cd /opt/ltp # ./runltp -f fs
Test log:
read_all.c:687: TPASS: Finished reading files Summary: passed 1 failed 0 broken 0 skipped 0 warnings 0 tst_test.c:1558: TINFO: Timeout per run is 0h 06m 40s read_all.c:568: TINFO: Worker timeout set to 10% of max_runtime: 1000ms [ 1344.664349] block sda: the capability attribute has been deprecated.
I think the oops is unrelated to the line above
[ 1344.679885] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 1344.686839] #PF: supervisor instruction fetch in kernel mode [ 1344.692490] #PF: error_code(0x0010) - not-present page [ 1344.697620] PGD 8000000105569067 P4D 8000000105569067 PUD 1056ed067 PMD 0 [ 1344.704494] Oops: 0010 [#1] PREEMPT SMP PTI [ 1344.708680] CPU: 0 PID: 5649 Comm: read_all Not tainted 6.4.0-rc7-next-20230621 #1 [ 1344.716245] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.5 11/26/2020 [ 1344.723629] RIP: 0010:0x0 [ 1344.726257] Code: Unable to access opcode bytes at 0xffffffffffffffd6. [ 1344.732780] RSP: 0018:ffff98d38123bd38 EFLAGS: 00010286 [ 1344.737998] RAX: 0000000000000000 RBX: ffffffffbea38720 RCX: 0000000000000000 [ 1344.745123] RDX: ffff979e42e31000 RSI: ffffffffbea38720 RDI: ffff979e40371900 [ 1344.752246] RBP: ffff98d38123bd48 R08: ffff979e4080a0f0 R09: 0000000000000001 [ 1344.759371] R10: ffff979e42e31000 R11: 0000000000000000 R12: ffff979e42e31000 [ 1344.766495] R13: 0000000000000001 R14: ffff979e432dd2f8 R15: ffff979e432dd2d0 [ 1344.773621] FS: 00007ff745d4b740(0000) GS:ffff97a1a7a00000(0000) knlGS:0000000000000000 [ 1344.781704] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1344.787442] CR2: ffffffffffffffd6 CR3: 000000010563c004 CR4: 00000000003706f0 [ 1344.794587] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1344.801733] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1344.808857] Call Trace: [ 1344.811301] <TASK> [ 1344.813399] ? show_regs+0x6e/0x80 [ 1344.816804] ? __die+0x29/0x70 [ 1344.819857] ? page_fault_oops+0x154/0x470 [ 1344.823957] ? do_user_addr_fault+0x355/0x6c0 [ 1344.828314] ? exc_page_fault+0x6e/0x170 [ 1344.832239] ? asm_exc_page_fault+0x2b/0x30 [ 1344.836420] max_phase_adjustment_show+0x23/0x50
The function is newly added by commit c3b60ab7a4dff ("ptp: Add getmaxphase callback to ptp_clock_info"), adding everyone from that patch to Cc.
Arnd