[   26.421029] BUG: Bad rss-counter state mm:000000004b9c22ec type:MM_FILEPAGES val:33
[   26.422159] BUG: Bad rss-counter state mm:000000004b9c22ec type:MM_ANONPAGES val:22
[  OK  ] Finished Update UTMP about System Runlevel Changes.
[   26.795278] ==================================================================
[   26.795978] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0
[   26.796744] Read of size 8 at addr ffff88801a3f2a50 by task sshd/222
[   26.797332] 
[   26.797499] CPU: 0 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1
[   26.798161] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[   26.799038] Call Trace:
[   26.799288]  <TASK>
[   26.799504]  dump_stack_lvl+0x91/0xf0
[   26.799887]  print_report+0xcc/0x620
[   26.800269]  ? __virt_addr_valid+0x102/0x340
[   26.800701]  ? vma_interval_tree_remove+0xc75/0xec0
[   26.801195]  ? vma_interval_tree_remove+0xc75/0xec0
[   26.801603]  kasan_report+0xbe/0xf0
[   26.801865]  ? vma_interval_tree_remove+0xc75/0xec0
[   26.802210]  vma_interval_tree_remove+0xc75/0xec0
[   26.802542]  vma_prepare+0xc54/0x11a0
[   26.802812]  __split_vma+0x5af/0x950
[   26.803074]  ? __pfx___split_vma+0x10/0x10
[   26.803366]  ? find_held_lock+0x2c/0x110
[   26.803650]  do_vmi_align_munmap+0x2ba/0x11f0
[   26.803968]  ? lock_is_held_type+0x9f/0x120
[   26.804273]  ? __pfx_do_vmi_align_munmap+0x10/0x10
[   26.804623]  ? mtree_range_walk+0x632/0x900
[   26.804950]  ? mas_walk+0x5c7/0x7c0
[   26.805231]  do_vmi_munmap+0x1f1/0x2b0
[   26.805526]  mmap_region+0x1f9/0x2660
[   26.805819]  ? vm_mmap_pgoff+0x15c/0x3a0
[   26.806121]  ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10
[   26.806548]  ? __pfx_lock_acquire+0x10/0x10
[   26.806864]  ? __pfx_mmap_region+0x10/0x10
[   26.807181]  ? security_mmap_addr+0x7d/0xa0
[   26.807500]  ? get_unmapped_area+0x1f5/0x3f0
[   26.807826]  do_mmap+0x854/0xf00
[   26.808086]  vm_mmap_pgoff+0x1a6/0x3a0
[   26.808392]  ? __pfx_vm_mmap_pgoff+0x10/0x10
[   26.808710]  ksys_mmap_pgoff+0x3af/0x500
[   26.809000]  do_syscall_64+0x3f/0x90
[   26.809265]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   26.809619] RIP: 0033:0x7f5dbb09ad82
[   26.809867] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00
[   26.811056] RSP: 002b:00007ffe29213da8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
[   26.811567] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5dbb09ad82
[   26.812033] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5dba4d4000
[   26.812526] RBP: 00007f5dba4d4000 R08: 0000000000000009 R09: 0000000000001000
[   26.812994] R10: 0000000000000812 R11: 0000000000000206 R12: 000056279354cec0
[   26.813458] R13: 00007ffe29213dc0 R14: 00007ffe29213df0 R15: 00007ffe29214150
[   26.813939]  </TASK>
[   26.814099] 
[   26.814216] Allocated by task 209:
[   26.814464]  kasan_save_stack+0x22/0x50
[   26.814745]  kasan_set_track+0x25/0x30
[   26.815016]  __kasan_slab_alloc+0x59/0x70
[   26.815297]  kmem_cache_alloc+0x16b/0x370
[   26.815580]  vm_area_dup+0x20/0x160
[   26.815832]  __split_vma+0x170/0x950
[   26.816085]  split_vma+0xc6/0x110
[   26.816340]  mprotect_fixup+0x8d2/0xb30
[   26.816620]  do_mprotect_pkey+0x87e/0xd40
[   26.816909]  __x64_sys_mprotect+0x78/0xc0
[   26.817195]  do_syscall_64+0x3f/0x90
[   26.817454]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   26.817817] 
[   26.817935] Freed by task 13:
[   26.818145]  kasan_save_stack+0x22/0x50
[   26.818426]  kasan_set_track+0x25/0x30
[   26.818698]  kasan_save_free_info+0x2b/0x50
[   26.818996]  __kasan_slab_free+0x10a/0x190
[   26.819284]  kmem_cache_free+0x10d/0x4d0
[   26.819560]  rcu_core+0x8c8/0x2860
[   26.819802]  __do_softirq+0x1b7/0x7d4
[   26.820069] 
[   26.820198] Last potentially related work creation:
[   26.820519]  kasan_save_stack+0x22/0x50
[   26.820803]  __kasan_record_aux_stack+0x8e/0xa0
[   26.821130]  __call_rcu_common.constprop.0+0x6a/0xb90
[   26.821498]  remove_vma+0x139/0x170
[   26.821753]  do_vmi_align_munmap+0xd4a/0x11f0
[   26.822066]  do_vmi_munmap+0x1f1/0x2b0
[   26.822343]  __vm_munmap+0x138/0x3a0
[   26.822604]  __x64_sys_munmap+0x59/0x80
[   26.822887]  do_syscall_64+0x3f/0x90
[   26.823152]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   26.823515] 
[   26.823640] The buggy address belongs to the object at ffff88801a3f29f8
[   26.823640]  which belongs to the cache vm_area_struct of size 168
[   26.824492] The buggy address is located 88 bytes inside of
[   26.824492]  freed 168-byte region [ffff88801a3f29f8, ffff88801a3f2aa0)
[   26.825301] 
[   26.825426] The buggy address belongs to the physical page:
[   26.825803] page:00000000b5fd9de0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a3f2
[   26.826417] memcg:ffff88801a3e0401
[   26.826661] flags: 0x100000000000200(slab|node=0|zone=1)
[   26.827024] page_type: 0xffffffff()
[   26.827275] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000
[   26.827793] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a3e0401
[   26.828332] page dumped because: kasan: bad access detected
[   26.828708] 
[   26.828832] Memory state around the buggy address:
[   26.829162]  ffff88801a3f2900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   26.829660]  ffff88801a3f2980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa
[   26.830135] >ffff88801a3f2a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.830615]                                                  ^
[   26.831013]  ffff88801a3f2a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb
[   26.831502]  ffff88801a3f2b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.831990] ==================================================================
[   26.832725] Disabling lock debugging due to kernel taint

Debian GNU/Linux 11 syzkaller ttyS0

syzkaller login: [   27.995568] BUG: Bad rss-counter state mm:00000000274443a2 type:MM_FILEPAGES val:33
[   27.996652] BUG: Bad rss-counter state mm:00000000274443a2 type:MM_ANONPAGES val:22
[   28.427985] BUG: Bad rss-counter state mm:00000000ff5fb768 type:MM_FILEPAGES val:33
[   28.428911] BUG: Bad rss-counter state mm:00000000ff5fb768 type:MM_ANONPAGES val:22
Warning: Permanently added '[localhost]:14558' (ECDSA) to the list of known hosts.
[   28.545948] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI
[   28.547274] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
[   28.548137] CPU: 0 PID: 238 Comm: sshd Tainted: G    B              6.4.0-rc7-next-20230619 #1
[   28.549128] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[   28.550060] RIP: 0010:__rb_insert_augmented+0x78/0x8b0
[   28.550695] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77
[   28.552753] RSP: 0018:ffff888016d678a8 EFLAGS: 00010212
[   28.553368] RAX: ffff88801926ad70 RBX: ffff88800feb2698 RCX: 1ffff11001fd64d3
[   28.554190] RDX: 0000000000000001 RSI: ffff88801926ad70 RDI: ffff88800feb2698
[   28.555005] RBP: ffff88801bc86128 R08: 0000000000000008 R09: 0000000000000000
[   28.555823] R10: 0000000000000000 R11: 00000000000b6996 R12: 0000000000000000
[   28.556680] R13: dffffc0000000000 R14: ffff888016d67988 R15: ffffffff816e61c0
[   28.557491] FS:  00007f32b00de900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[   28.558429] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.559105] CR2: 00007f32b00a0000 CR3: 000000000f090000 CR4: 0000000000350ef0
[   28.559926] Call Trace:
[   28.560236]  <TASK>
[   28.560507]  ? die_addr+0x3c/0xa0
[   28.560932]  ? exc_general_protection+0x125/0x220
[   28.561522]  ? asm_exc_general_protection+0x26/0x30
[   28.562121]  ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10
[   28.562830]  ? __rb_insert_augmented+0x78/0x8b0
[   28.563417]  ? vma_interval_tree_insert+0x23a/0x400
[   28.564004]  vma_prepare+0xa1a/0x11a0
[   28.564471]  __split_vma+0x5af/0x950
[   28.564928]  ? __pfx___split_vma+0x10/0x10
[   28.565434]  ? lock_acquire+0x434/0x4c0
[   28.565938]  do_vmi_align_munmap+0x361/0x11f0
[   28.566498]  ? __pfx_do_vmi_align_munmap+0x10/0x10
[   28.567044]  ? mtree_range_walk+0x632/0x900
[   28.567544]  ? mas_walk+0x5c7/0x7c0
[   28.567974]  do_vmi_munmap+0x1f1/0x2b0
[   28.568424]  mmap_region+0x1f9/0x2660
[   28.568856]  ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10
[   28.569492]  ? __pfx_lock_acquire+0x10/0x10
[   28.569968]  ? __pfx_mmap_region+0x10/0x10
[   28.570443]  ? security_mmap_addr+0x7d/0xa0
[   28.570919]  ? get_unmapped_area+0x1f5/0x3f0
[   28.571413]  do_mmap+0x854/0xf00
[   28.571813]  vm_mmap_pgoff+0x1a6/0x3a0
[   28.572262]  ? __pfx_vm_mmap_pgoff+0x10/0x10
[   28.572768]  ksys_mmap_pgoff+0x3af/0x500
[   28.573227]  do_syscall_64+0x3f/0x90
[   28.573663]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   28.574246] RIP: 0033:0x7f32b0c70d82
[   28.574661] Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00
[   28.576595] RSP: 002b:00007fffc5e2d688 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
[   28.577419] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f32b0c70d82
[   28.578187] RDX: 0000000000000005 RSI: 0000000000002000 RDI: 00007f32b009a000
[   28.578952] RBP: 00007f32b009a000 R08: 0000000000000008 R09: 0000000000002000
[   28.579713] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b965171a70
[   28.580492] R13: 00007fffc5e2d6a0 R14: 00007fffc5e2d6d0 R15: 00007fffc5e2da30
[   28.581257]  </TASK>
[   28.581521] Modules linked in:
[   28.581934] ---[ end trace 0000000000000000 ]---
[   28.582468] RIP: 0010:__rb_insert_augmented+0x78/0x8b0
[   28.583055] Code: ea 48 c1 ea 03 42 80 3c 2a 00 0f 85 65 05 00 00 4c 8b 65 00 41 f6 c4 01 0f 85 18 05 00 00 4d 8d 44 24 08 4c 89 c2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77
[   28.585911] RSP: 0018:ffff888016d678a8 EFLAGS: 00010212
[   28.586941] RAX: ffff88801926ad70 RBX: ffff88800feb2698 RCX: 1ffff11001fd64d3
[   28.587878] RDX: 0000000000000001 RSI: ffff88801926ad70 RDI: ffff88800feb2698
[   28.588808] RBP: ffff88801bc86128 R08: 0000000000000008 R09: 0000000000000000
[   28.589673] R10: 0000000000000000 R11: 00000000000b6996 R12: 0000000000000000
[   28.590465] R13: dffffc0000000000 R14: ffff888016d67988 R15: ffffffff816e61c0
[   28.591229] FS:  00007f32b00de900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[   28.592112] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.592784] CR2: 00007f32b00a0000 CR3: 000000000f090000 CR4: 0000000000350ef0

VM DIAGNOSIS:
02:37:22  Registers:
info registers vcpu 0
RAX=0000000000000000 RBX=ffff88800e729120 RCX=ffffffff812e00e5 RDX=0000000000000001
RSI=0000000000000004 RDI=ffff88801628fcd0 RBP=1ffff11002c51f96 RSP=ffff88801628fca8
R8 =0000000000000001 R9 =ffffed1002c51f9a R10=0000000000000003 R11=0000000000000000
R12=ffff88800e729128 R13=ffff88800e729130 R14=000000001bfcc007 R15=000000000e28c067
RIP=ffffffff812e00f6 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0000 0000000000000000 00000000 00000000
DS =0000 0000000000000000 00000000 00000000
FS =0000 00007f0db53eb900 00000000 00000000
GS =0000 ffff88806ce00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy
GDT=     fffffe0000001000 0000007f
IDT=     fffffe0000000000 00000fff
CR0=80050033 CR2=00007f0db59a534c CR3=000000000f090000 CR4=00350ef0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=6720646572637465733a4d41503d706f XMM01=652022746f6f72223d74636361207469
XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f
XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a
XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000
XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000
XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000
XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000
XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000
info registers vcpu 1
RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01
RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70
R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400
R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000
RIP=ffffffff8450d49f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffff88806cf00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy
GDT=     fffffe0000048000 0000007f
IDT=     fffffe0000000000 00000fff
CR0=80050033 CR2=00007f620ef2a000 CR3=000000000d852000 CR4=00350ee0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=2035323a37333a3230203032206e754a XMM01=73732878696e755f6d6170203a5d3932
XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373
XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f
XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034323a37333a3230203032
XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000
XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000
XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000
XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000