==================================================================
BUG: KASAN: unknown-crash in __rb_change_child include/linux/rbtree_augmented.h:199 [inline]
BUG: KASAN: unknown-crash in __rb_erase_augmented include/linux/rbtree_augmented.h:242 [inline]
BUG: KASAN: unknown-crash in rb_erase+0x11a6/0x1360 lib/rbtree.c:443
Read of size 8 at addr ffffc90004a07b80 by task rm/5467

CPU: 1 PID: 5467 Comm: rm Not tainted 6.6.0-rc2-next-20230919-syzkaller-06333-g29e400e3ea48 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0xc4/0x620 mm/kasan/report.c:475
 kasan_report+0xda/0x110 mm/kasan/report.c:588
 __rb_change_child include/linux/rbtree_augmented.h:199 [inline]
 __rb_erase_augmented include/linux/rbtree_augmented.h:242 [inline]
 rb_erase+0x11a6/0x1360 lib/rbtree.c:443
 rb_erase_cached include/linux/rbtree.h:126 [inline]
 timerqueue_del+0x83/0x140 lib/timerqueue.c:57
 __remove_hrtimer+0x99/0x290 kernel/time/hrtimer.c:1119
 __run_hrtimer kernel/time/hrtimer.c:1668 [inline]
 __hrtimer_run_queues+0x55b/0xc10 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline]
 __sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1074
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__sanitizer_cov_trace_switch+0x4f/0x90 kernel/kcov.c:341
Code: 83 f8 10 75 2f 41 bd 03 00 00 00 4c 8b 75 00 31 db 4d 85 f6 74 1e 48 8b 74 dd 10 4c 89 e2 4c 89 ef 48 83 c3 01 48 8b 4c 24 28 <e8> 1c fe ff ff 49 39 de 75 e2 5b 5d 41 5c 41 5d 41 5e c3 48 83 f8
RSP: 0018:ffffc900051ff6a8 EFLAGS: 00000202
RAX: 0000000000000008 RBX: 0000000000000001 RCX: ffffffff813a5ced
RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffffff8a89cc20 R08: 0000000000000001 R09: 0000000000000009
R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000001 R14: 0000000000000003 R15: 0000000000000002
 unwind_next_frame+0x77d/0x2390 arch/x86/kernel/unwind_orc.c:581
 __unwind_start+0x5a4/0x880 arch/x86/kernel/unwind_orc.c:760
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xaf/0x170 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1800 [inline]
 slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1826
 slab_free mm/slub.c:3809 [inline]
 kmem_cache_free+0xf0/0x470 mm/slub.c:3831
 remove_vma+0x128/0x170 mm/mmap.c:146
 exit_mmap+0x453/0xa60 mm/mmap.c:3232
 __mmput+0x12a/0x4d0 kernel/fork.c:1349
 mmput+0xSeaBIOS (version 1.8.2-google)
----------------
Code disassembly (best guess):
   0:	83 f8 10             	cmp    $0x10,%eax
   3:	75 2f                	jne    0x34
   5:	41 bd 03 00 00 00    	mov    $0x3,%r13d
   b:	4c 8b 75 00          	mov    0x0(%rbp),%r14
   f:	31 db                	xor    %ebx,%ebx
  11:	4d 85 f6             	test   %r14,%r14
  14:	74 1e                	je     0x34
  16:	48 8b 74 dd 10       	mov    0x10(%rbp,%rbx,8),%rsi
  1b:	4c 89 e2             	mov    %r12,%rdx
  1e:	4c 89 ef             	mov    %r13,%rdi
  21:	48 83 c3 01          	add    $0x1,%rbx
  25:	48 8b 4c 24 28       	mov    0x28(%rsp),%rcx
* 2a:	e8 1c fe ff ff       	call   0xfffffe4b <-- trapping instruction
  2f:	49 39 de             	cmp    %rbx,%r14
  32:	75 e2                	jne    0x16
  34:	5b                   	pop    %rbx
  35:	5d                   	pop    %rbp
  36:	41 5c                	pop    %r12
  38:	41 5d                	pop    %r13
  3a:	41 5e                	pop    %r14
  3c:	c3                   	ret
  3d:	48                   	rex.W
  3e:	83                   	.byte 0x83
  3f:	f8                   	clc