=============================
[ BUG: Invalid wait context ]
6.15.0-syzkaller-08486-gf66bc387efbe #0 Not tainted
-----------------------------
modprobe/19016 is trying to lock:
ffffc900044fa410 (&gpc->lock){....}-{3:3}, at: kvm_xen_set_evtchn_fast+0x254/0xeb0 arch/x86/kvm/xen.c:1819
other info that might help us debug this:
context-{2:2}
2 locks held by modprobe/19016:
 #0: ffff88803c9fc260 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:147 [inline]
 #0: ffff88803c9fc260 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x1d8/0x450 mm/util.c:577
 #1: ffffc900044fa960 (&kvm->srcu){.?.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
 #1: ffffc900044fa960 (&kvm->srcu){.?.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
 #1: ffffc900044fa960 (&kvm->srcu){.?.+}-{0:0}, at: kvm_xen_set_evtchn_fast+0x23a/0xeb0 arch/x86/kvm/xen.c:1817
stack backtrace:
CPU: 2 UID: 0 PID: 19016 Comm: modprobe Not tainted 6.15.0-syzkaller-08486-gf66bc387efbe #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4833 [inline]
 check_wait_context kernel/locking/lockdep.c:4905 [inline]
 __lock_acquire+0xa12/0x1c90 kernel/locking/lockdep.c:5190
 lock_acquire kernel/locking/lockdep.c:5871 [inline]
 lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828
 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
 _raw_read_lock_irqsave+0x46/0x90 kernel/locking/spinlock.c:236
 kvm_xen_set_evtchn_fast+0x254/0xeb0 arch/x86/kvm/xen.c:1819
 xen_timer_callback+0x1db/0x2a0 arch/x86/kvm/xen.c:140
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x5ed/0xad0 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x3f0 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_cmp1+0x0/0x20 kernel/kcov.c:275
Code: 38 4c 89 44 30 e0 4c 89 4c 30 e8 4c 89 54 30 f0 4a 89 4c d8 20 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 31 ff e9 49 ff ff
RSP: 0018:ffffc9000693f3a8 EFLAGS: 00000206
RAX: 0000000000000040 RBX: ffff888038294e0c RCX: ffffffff8b7516ef
RDX: ffff88803c4ea440 RSI: 000000000000000f RDI: 0000000000000008
RBP: 0000000000000008 R08: 0000000000000004 R09: 0000000000000008
R10: 0000000000000010 R11: 0000000000000001 R12: 000000000000000f
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000008
 mas_safe_pivot lib/maple_tree.c:713 [inline]
 mas_validate_gaps lib/maple_tree.c:7285 [inline]
 mt_validate+0x281b/0x4210 lib/maple_tree.c:7564
 validate_mm+0xb0/0x570 mm/vma.c:595
 __split_vma+0xc01/0x1030 mm/vma.c:524
 vms_gather_munmap_vmas+0x392/0x1310 mm/vma.c:1336
 __mmap_prepare mm/vma.c:2304 [inline]
 __mmap_region+0x314/0x27c0 mm/vma.c:2507
 mmap_region+0x1ab/0x3f0 mm/vma.c:2598
 do_mmap+0xd8e/0x11b0 mm/mmap.c:561
 vm_mmap_pgoff+0x281/0x450 mm/util.c:579
 ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:607
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f82847ba242
Code: 08 00 04 00 00 eb e2 90 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 33 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5e 5b 5d c3 0f 1f 00 c7 05 46 40 01 00 16 00
RSP: 002b:00007fffb09d10d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f82844de000 RCX: 00007f82847ba242
RDX: 0000000000000005 RSI: 0000000000008000 RDI: 00007f82844de000
RBP: 0000000000000812 R08: 0000000000000000 R09: 0000000000003000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007fffb09d1128
R13: 00007f828478eb20 R14: 00007fffb09d1510 R15: 00000ffff613a21e
 </TASK>
IPVS: dh: UDP 224.0.0.2:0 - no destination available
----------------
Code disassembly (best guess):
   0:	38 4c 89 44          	cmp    %cl,0x44(%rcx,%rcx,4)
   4:	30 e0                	xor    %ah,%al
   6:	4c 89 4c 30 e8       	mov    %r9,-0x18(%rax,%rsi,1)
   b:	4c 89 54 30 f0       	mov    %r10,-0x10(%rax,%rsi,1)
  10:	4a 89 4c d8 20       	mov    %rcx,0x20(%rax,%r11,8)
  15:	c3                   	ret
  16:	cc                   	int3
  17:	cc                   	int3
  18:	cc                   	int3
  19:	cc                   	int3
  1a:	90                   	nop
  1b:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	90                   	nop
  23:	90                   	nop
  24:	90                   	nop
  25:	90                   	nop
  26:	90                   	nop
  27:	90                   	nop
  28:	90                   	nop
  29:	90                   	nop
* 2a:	f3 0f 1e fa          	endbr64 <-- trapping instruction
  2e:	48 8b 0c 24          	mov    (%rsp),%rcx
  32:	40 0f b6 d6          	movzbl %sil,%edx
  36:	40 0f b6 f7          	movzbl %dil,%esi
  3a:	31 ff                	xor    %edi,%edi
  3c:	e9                   	.byte 0xe9
  3d:	49 ff                	rex.WB (bad)
  3f:	ff                   	.byte 0xff