syzbot


WARNING in __handle_mm_fault

Status: closed as invalid on 2021/03/07 09:48
Subsystems: kernel
[Documentation on labels]
First crash: 1145d, last: 1145d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __handle_mm_fault (2) kvm 3 1132d 1142d 0/26 auto-closed as invalid on 2021/07/17 20:44

Sample crash report:
------------[ cut here ]------------
raw_local_irq_restore() called with IRQs enabled
WARNING: CPU: 0 PID: 8392 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10
Modules linked in:
CPU: 0 PID: 8392 Comm: syz-fuzzer Not tainted 5.12.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:warn_bogus_irq_restore+0x1d/0x20 kernel/locking/irqflag-debug.c:10
Code: be ff cc cc cc cc cc cc cc cc cc cc cc 80 3d bd 36 af 04 00 74 01 c3 48 c7 c7 a0 8f 6b 89 c6 05 ac 36 af 04 01 e8 87 ba be ff <0f> 0b c3 48 39 77 10 0f 84 97 00 00 00 66 f7 47 22 f0 ff 74 4b 48
RSP: 0000:ffffc90001687ac8 EFLAGS: 00010282
RDX: ffff888012938080 RSI: ffffffff815c0ef5 RDI: fffff520002d0f4b
R10: ffffffff815b9c5e R11: 0000000000000000 R12: 0000000000000003
R13: ffffed100547ab08 R14: 0000000000000001 R15: ffff8880b9c36000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00045b148 CR3: 000000002fcd1000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Call Trace:
 pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
 pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
 __pv_queued_spin_lock_slowpath+0x8b8/0xb40 kernel/locking/qspinlock.c:508
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:113
 __handle_mm_fault+0xeeb/0x4f70 mm/memory.c:4445
 handle_mm_fault+0x1bc/0x7e0 mm/memory.c:4549
 do_user_addr_fault+0x483/0x1210 arch/x86/mm/fault.c:1390
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577
RIP: 0033:0x404139
RSP: 002b:000000c00045b108 EFLAGS: 00010206
RAX: 0000000000000001 RBX: 0000000000c49200 RCX: 0000000000c49200
RBP: 000000c00045b128 R08: 0000000000000000 R09: 0000000000c49200
R13: 000000000000000d R14: 0000000000000003 R15: 000000c0000ec640

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/03/07 00:15 upstream a38fd8748464 e4b4d570 .config console log report ci-upstream-kasan-gce-selinux-root WARNING in __handle_mm_fault
* Struck through repros no longer work on HEAD.