linux-kernel - ltp::mmap05 --> BUG: using __this_cpu

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Date:   Sat, 31 Oct 2020 06:52:40 +0100
From:   Mike Galbraith <efault@....de>
To:     lkml <linux-kernel@...r.kernel.org>
Cc:     Peter Zijlstra <peterz@...radead.org>
Subject: ltp::mmap05  -->  BUG: using __this_cpu_read() in preemptible

[  138.620544] BUG: using __this_cpu_read() in preemptible [00000000] code: mmap05/4858
[  138.620737] caller is lockdep_hardirqs_on_prepare+0x2f/0x1b0
[  138.620880] CPU: 2 PID: 4858 Comm: mmap05 Kdump: loaded Tainted: G S          E     5.10.0.g07e0887-master #18
[  138.621097] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[  138.621243] Call Trace:
[  138.621330]  dump_stack+0x77/0x97
[  138.621434]  check_preemption_disabled+0xb4/0xc0
[  138.621551]  ? __bad_area_nosemaphore+0x63/0x1e0
[  138.621636]  lockdep_hardirqs_on_prepare+0x2f/0x1b0
[  138.621697]  ? __bad_area_nosemaphore+0x63/0x1e0
[  138.621758]  trace_hardirqs_on+0x33/0xf0
[  138.621813]  __bad_area_nosemaphore+0x63/0x1e0
[  138.621887]  exc_page_fault+0x1a4/0x670
[  138.621956]  ? asm_exc_page_fault+0x8/0x30
[  138.622017]  asm_exc_page_fault+0x1e/0x30
[  138.622073] RIP: 0033:0x403ef6
[  138.622118] Code: 48 83 c0 01 89 15 aa 1f 22 00 0f 84 d7 00 00 00 be 01 00 00 00 bf 00 07 62 00 e8 65 fd ff ff 85 c0 75 0a 48 8b 05 da c8 21 00 <0f> b6 00 8b 05 c9 c8 21 00 85 c0 74 43 b9 49 4e 41 00 31 d2 be 6e
[  138.622314] RSP: 002b:00007fff18c776e0 EFLAGS: 00010246
[  138.622384] RAX: 00007faf439cc000 RBX: 0000000000000003 RCX: 00007faf432077d0
[  138.622466] RDX: 0000000000620748 RSI: 0000000000000001 RDI: 0000000000000000
[  138.622547] RBP: 00007faf4397f6c0 R08: 0000000000000003 R09: 0000000000000000
[  138.622628] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000004040a0
[  138.622709] R13: 00007fff18c777e0 R14: 0000000000000000 R15: 0000000000000000
[  138.622840] BUG: using __this_cpu_read() in preemptible [00000000] code: mmap05/4858
[  138.622931] caller is lockdep_hardirqs_on+0x38/0x110
[  138.622994] CPU: 2 PID: 4858 Comm: mmap05 Kdump: loaded Tainted: G S          E     5.10.0.g07e0887-master #18
[  138.623102] Hardware name: MEDION MS-7848/MS-7848, BIOS M7848W08.20C 09/23/2013
[  138.623184] Call Trace:
[  138.623234]  dump_stack+0x77/0x97
[  138.623292]  check_preemption_disabled+0xb4/0xc0
[  138.623355]  ? __bad_area_nosemaphore+0x63/0x1e0
[  138.623422]  lockdep_hardirqs_on+0x38/0x110
[  138.623484]  __bad_area_nosemaphore+0x63/0x1e0
[  138.623561]  exc_page_fault+0x1a4/0x670
[  138.623630]  ? asm_exc_page_fault+0x8/0x30
[  138.623695]  asm_exc_page_fault+0x1e/0x30
[  138.623751] RIP: 0033:0x403ef6
[  138.623797] Code: 48 83 c0 01 89 15 aa 1f 22 00 0f 84 d7 00 00 00 be 01 00 00 00 bf 00 07 62 00 e8 65 fd ff ff 85 c0 75 0a 48 8b 05 da c8 21 00 <0f> b6 00 8b 05 c9 c8 21 00 85 c0 74 43 b9 49 4e 41 00 31 d2 be 6e
[  138.623993] RSP: 002b:00007fff18c776e0 EFLAGS: 00010246
[  138.624065] RAX: 00007faf439cc000 RBX: 0000000000000003 RCX: 00007faf432077d0
[  138.624150] RDX: 0000000000620748 RSI: 0000000000000001 RDI: 0000000000000000
[  138.624235] RBP: 00007faf4397f6c0 R08: 0000000000000003 R09: 0000000000000000
[  138.624319] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000004040a0
[  138.624404] R13: 00007fff18c777e0 R14: 0000000000000000 R15: 0000000000000000
   A.