syzbot


upstream test error: WARNING in flush_tlb_mm_range

Status: auto-closed as invalid on 2020/09/09 20:54
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+0338e3cdaaea6cc59e92@syzkaller.appspotmail.com
First crash: 1360d, last: 1359d
Discussions (1)
Title Replies (including bot) Last reply
upstream test error: WARNING in flush_tlb_mm_range 0 (1) 2020/08/05 07:19

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 8746 at arch/x86/mm/tlb.c:936 flush_tlb_mm_range+0x182/0x1a0 arch/x86/mm/tlb.c:946
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8746 Comm: systemd-udevd Not tainted 5.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x16e/0x25d lib/dump_stack.c:118
 panic+0x20c/0x69a kernel/panic.c:231
 __warn+0x211/0x240 kernel/panic.c:600
 report_bug+0x153/0x1d0 lib/bug.c:198
 handle_bug+0x4d/0x90 arch/x86/kernel/traps.c:235
 exc_invalid_op+0x16/0x70 arch/x86/kernel/traps.c:255
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:flush_tlb_mm_range+0x182/0x1a0 arch/x86/mm/tlb.c:946
Code: 01 00 00 00 e8 5f 00 16 00 65 8b 05 b4 1f e0 7e 85 c0 74 0f 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 07 00 df ff eb ea <0f> 0b 48 83 3d c4 47 ea 06 00 0f 85 5b ff ff ff 0f 0b 0f 0b 0f 0b
RSP: 0000:ffffc90000e17c00 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888124d932c0 RCX: ffff88812c02ce40
RDX: 00007fff58e4b000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: 00007fff58e4b000 R08: 0000000000000000 R09: 000088811fad810f
R10: 0000ffffffffffff R11: 0000000000000000 R12: 0000000000000000
R13: 000000000000000c R14: 00007fff58e4a000 R15: 0000000000000006
 flush_tlb_page arch/x86/include/asm/tlbflush.h:235 [inline]
 ptep_clear_flush+0xb3/0xd0 mm/pgtable-generic.c:97
 wp_page_copy+0x7b0/0x1360 mm/memory.c:2713
 do_wp_page+0x9de/0xd40 arch/x86/include/asm/atomic.h:95
 handle_pte_fault mm/memory.c:4243 [inline]
 __handle_mm_fault mm/memory.c:4357 [inline]
 handle_mm_fault+0x173d/0x1980 mm/memory.c:4394
 do_user_addr_fault+0x3a0/0x820 arch/x86/mm/fault.c:1295
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0xbf/0x210 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:538
RIP: 0033:0x558fe5b6fb56
Code: 00 00 0f 85 56 01 00 00 48 81 c4 10 04 00 00 5b 5d 41 5c 41 5d 41 5e c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 48 89 ee 48 89 df <e8> 75 e7 fb ff 85 c0 0f 94 c0 84 c0 74 ac 31 c0 41 80 7c 24 01 01
RSP: 002b:00007fff58e4ad60 EFLAGS: 00010217
RAX: 0000558fe5b6fb50 RBX: 0000558fe761d9bb RCX: 0000000000000000
RDX: 0000558fe5b80cb8 RSI: 0000558fe7614400 RDI: 0000558fe761d9bb
RBP: 0000558fe7614400 R08: 378c0fc04d2b3361 R09: 0000000000000138
R10: 0000558fe5b70d0c R11: 0000000000000297 R12: 0000558fe760d16c
R13: 0000558fe761bd50 R14: 0000000000000003 R15: 0000558fe7606bb0
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/08/05 20:53 upstream fffe3ae0ee84 b7129355 .config console log report ci2-upstream-kcsan-gce
2020/08/05 01:50 upstream 442489c21923 02034dac .config console log report ci2-upstream-kcsan-gce
* Struck through repros no longer work on HEAD.