[   24.861445] BUG: Bad rss-counter state mm:00000000ad3467f5 type:MM_FILEPAGES val:33
[   24.862608] BUG: Bad rss-counter state mm:00000000ad3467f5 type:MM_ANONPAGES val:22
[   24.901684] ==================================================================
[   24.902802] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0
[   24.904046] Read of size 8 at addr ffff88801b878310 by task sshd/218
[   24.904947] 
[   24.905204] CPU: 1 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1
[   24.906210] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[   24.907615] Call Trace:
[   24.907986]  <TASK>
[   24.908309]  dump_stack_lvl+0x91/0xf0
[   24.908659]  print_report+0xcc/0x620
[   24.908956]  ? __virt_addr_valid+0x102/0x340
[   24.909329]  ? vma_interval_tree_remove+0xc75/0xec0
[   24.909675]  ? vma_interval_tree_remove+0xc75/0xec0
[   24.910019]  kasan_report+0xbe/0xf0
[   24.910311]  ? vma_interval_tree_remove+0xc75/0xec0
[   24.910724]  vma_interval_tree_remove+0xc75/0xec0
[   24.911060]  vma_prepare+0xc54/0x11a0
[   24.911326]  __split_vma+0x5af/0x950
[   24.911588]  ? __pfx___split_vma+0x10/0x10
[   24.911949]  ? find_held_lock+0x2c/0x110
[   24.912294]  do_vmi_align_munmap+0x2ba/0x11f0
[   24.912639]  ? lock_is_held_type+0x9f/0x120
[   24.913001]  ? __pfx_do_vmi_align_munmap+0x10/0x10
[   24.913354]  ? mtree_range_walk+0x632/0x900
[   24.913654]  ? mas_walk+0x5c7/0x7c0
[   24.913913]  do_vmi_munmap+0x1f1/0x2b0
[   24.914182]  mmap_region+0x1f9/0x2660
[   24.914448]  ? vm_mmap_pgoff+0x15c/0x3a0
[   24.914732]  ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10
[   24.915126]  ? __pfx_lock_acquire+0x10/0x10
[   24.915434]  ? __pfx_mmap_region+0x10/0x10
[   24.915730]  ? security_mmap_addr+0x7d/0xa0
[   24.916026]  ? get_unmapped_area+0x1f5/0x3f0
[   24.916330]  do_mmap+0x854/0xf00
[   24.916571]  vm_mmap_pgoff+0x1a6/0x3a0
[   24.916845]  ? __pfx_vm_mmap_pgoff+0x10/0x10
[   24.917152]  ksys_mmap_pgoff+0x3af/0x500
[   24.917433]  do_syscall_64+0x3f/0x90
[   24.917698]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   24.918053] RIP: 0033:0x7f46c0f99d82
[   24.918312] 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
[   24.919493] RSP: 002b:00007ffd66f3e148 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
[   24.919987] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f46c0f99d82
[   24.920457] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f46c03d3000
[   24.920922] RBP: 00007f46c03d3000 R08: 0000000000000009 R09: 0000000000001000
[   24.921390] R10: 0000000000000812 R11: 0000000000000206 R12: 000055953efd6f70
[   24.921860] R13: 00007ffd66f3e160 R14: 00007ffd66f3e190 R15: 00007ffd66f3e4f0
[   24.922337]  </TASK>
[   24.922498] 
[   24.922616] Allocated by task 207:
[   24.922858]  kasan_save_stack+0x22/0x50
[   24.923137]  kasan_set_track+0x25/0x30
[   24.923412]  __kasan_slab_alloc+0x59/0x70
[   24.923704]  kmem_cache_alloc+0x16b/0x370
[   24.923994]  vm_area_dup+0x20/0x160
[   24.924247]  __split_vma+0x170/0x950
[   24.924508]  split_vma+0xc6/0x110
[   24.924755]  mprotect_fixup+0x8d2/0xb30
[   24.925039]  do_mprotect_pkey+0x87e/0xd40
[   24.925330]  __x64_sys_mprotect+0x78/0xc0
[   24.925619]  do_syscall_64+0x3f/0x90
[   24.925882]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   24.926236] 
[   24.926356] Freed by task 218:
[   24.926571]  kasan_save_stack+0x22/0x50
[   24.926851]  kasan_set_track+0x25/0x30
[   24.927129]  kasan_save_free_info+0x2b/0x50
[   24.927450]  __kasan_slab_free+0x10a/0x190
[   24.927744]  kmem_cache_free+0x10d/0x4d0
[   24.928027]  rcu_core+0x8c8/0x2860
[   24.928275]  __do_softirq+0x1b7/0x7d4
[   24.928536] 
[   24.928656] Last potentially related work creation:
[   24.928978]  kasan_save_stack+0x22/0x50
[   24.929258]  __kasan_record_aux_stack+0x8e/0xa0
[   24.929577]  __call_rcu_common.constprop.0+0x6a/0xb90
[   24.929937]  remove_vma+0x139/0x170
[   24.930191]  do_vmi_align_munmap+0xd4a/0x11f0
[   24.930500]  do_vmi_munmap+0x1f1/0x2b0
[   24.930766]  __vm_munmap+0x138/0x3a0
[   24.931023]  __x64_sys_munmap+0x59/0x80
[   24.931299]  do_syscall_64+0x3f/0x90
[   24.931560]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   24.931920] 
[   24.932038] The buggy address belongs to the object at ffff88801b8782b8
[   24.932038]  which belongs to the cache vm_area_struct of size 168
[   24.932852] The buggy address is located 88 bytes inside of
[   24.932852]  freed 168-byte region [ffff88801b8782b8, ffff88801b878360)
[   24.933628] 
[   24.933748] The buggy address belongs to the physical page:
[   24.934121] page:00000000233a4fe6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b878
[   24.934731] memcg:ffff88801a38be01
[   24.934966] flags: 0x100000000000200(slab|node=0|zone=1)
[   24.935334] page_type: 0xffffffff()
[   24.935590] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000
[   24.936095] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a38be01
[   24.936597] page dumped because: kasan: bad access detected
[   24.936980] 
[   24.937108] Memory state around the buggy address:
[   24.937431]  ffff88801b878200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
[   24.937931]  ffff88801b878280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb
[   24.938424] >ffff88801b878300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
[   24.938926]                          ^
[   24.939198]  ffff88801b878380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb
[   24.939696]  ffff88801b878400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
[   24.940168] ==================================================================
[   24.940679] Disabling lock debugging due to kernel taint

Debian GNU/Linux 11 syzkaller ttyS0

syzkaller login: [   26.752170] BUG: Bad rss-counter state mm:000000006b398abf type:MM_FILEPAGES val:33
[   26.753148] BUG: Bad rss-counter state mm:000000006b398abf type:MM_ANONPAGES val:22
[   27.250779] BUG: Bad rss-counter state mm:000000009c6744ac type:MM_FILEPAGES val:33
[   27.251757] BUG: Bad rss-counter state mm:000000009c6744ac type:MM_ANONPAGES val:22
Warning: Permanently added '[localhost]:15482' (ECDSA) to the list of known hosts.
2023/06/19 23:16:53 fuzzer started
2023/06/19 23:16:53 dialing manager at localhost:44161
2023/06/19 23:16:53 checking machine...
2023/06/19 23:16:53 checking revisions...
[   27.988659] kmemleak: Automatic memory scanning thread ended
2023/06/19 23:16:53 testing simple program...
[   28.036065] cgroup: Unknown subsys name 'net'
[   28.109514] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
[   36.143299] general protection fault, probably for non-canonical address 0xe0867c012000001b: 0000 [#1] PREEMPT SMP KASAN NOPTI
[   36.144627] KASAN: maybe wild-memory-access in range [0x04340009000000d8-0x04340009000000df]
[   36.145577] CPU: 0 PID: 263 Comm: cron Tainted: G    B              6.4.0-rc7-next-20230619 #1
[   36.146541] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[   36.147467] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0
[   36.148094] Code: 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 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48
[   36.150077] RSP: 0018:ffff8880196b78a8 EFLAGS: 00010216
[   36.150686] RAX: ffff88801997f2c8 RBX: ffff88800e3bfb20 RCX: ffffffff844ce9f9
[   36.151494] RDX: 008680012000001b RSI: 0000000000000008 RDI: ffff888015aa3008
[   36.152296] RBP: ffff888016859bc0 R08: ffff888015aa3008 R09: 0000000000000000
[   36.153098] R10: 0000000000000000 R11: 00000000000b6996 R12: ffff888015aa3000
[   36.153907] R13: dffffc0000000000 R14: 04340009000000db R15: ffffffff816e61c0
[   36.154709] FS:  00007f46e52ed840(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[   36.155630] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.156294] CR2: 00007f46e4ec9000 CR3: 000000000e5ac000 CR4: 0000000000350ef0
[   36.157097] Call Trace:
[   36.157405]  <TASK>
[   36.157682]  ? die_addr+0x3c/0xa0
[   36.158112]  ? exc_general_protection+0x125/0x220
[   36.158698]  ? asm_exc_general_protection+0x26/0x30
[   36.159301]  ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10
[   36.160157]  ? __rb_insert_augmented+0x5e9/0x8b0
[   36.160865]  ? __rb_insert_augmented+0x9d/0x8b0
[   36.161537]  ? __rb_insert_augmented+0x5e9/0x8b0
[   36.162164]  vma_prepare+0xa1a/0x11a0
[   36.162653]  __split_vma+0x5af/0x950
[   36.163205]  ? __pfx___split_vma+0x10/0x10
[   36.163847]  ? lock_acquire+0x434/0x4c0
[   36.164403]  do_vmi_align_munmap+0x361/0x11f0
[   36.165010]  ? trace_hardirqs_on+0x16/0x100
[   36.165563]  ? trace_hardirqs_on+0x16/0x100
[   36.166150]  ? __pfx_do_vmi_align_munmap+0x10/0x10
[   36.166788]  ? mtree_range_walk+0x632/0x900
[   36.167366]  ? mas_walk+0x5c7/0x7c0
[   36.167856]  do_vmi_munmap+0x1f1/0x2b0
[   36.168359]  mmap_region+0x1f9/0x2660
[   36.168855]  ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10
[   36.169605]  ? __pfx_lock_acquire+0x10/0x10
[   36.170146]  ? __pfx_mmap_region+0x10/0x10
[   36.170681]  ? security_mmap_addr+0x7d/0xa0
[   36.171214]  ? get_unmapped_area+0x1f5/0x3f0
[   36.171772]  do_mmap+0x854/0xf00
[   36.172216]  vm_mmap_pgoff+0x1a6/0x3a0
[   36.172713]  ? __pfx_vm_mmap_pgoff+0x10/0x10
[   36.173274]  ksys_mmap_pgoff+0x3af/0x500
[   36.173808]  do_syscall_64+0x3f/0x90
[   36.174287]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[   36.174945] RIP: 0033:0x7f46e560fd82
[   36.175447] 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
[   36.177718] RSP: 002b:00007ffd334af318 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
[   36.178847] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f46e560fd82
[   36.179907] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f46e4ec4000
[   36.180975] RBP: 00007f46e4ec4000 R08: 0000000000000009 R09: 0000000000001000
[   36.182039] R10: 0000000000000812 R11: 0000000000000206 R12: 000055741b5a3580
[   36.183109] R13: 00007ffd334af330 R14: 00007ffd334af360 R15: 00007ffd334af6c0
[   36.184185]  </TASK>
[   36.184544] Modules linked in:
[   36.185196] ---[ end trace 0000000000000000 ]---
[   36.185991] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0
[   36.186855] Code: 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 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48
[   36.189099] RSP: 0018:ffff8880196b78a8 EFLAGS: 00010216
[   36.189800] RAX: ffff88801997f2c8 RBX: ffff88800e3bfb20 RCX: ffffffff844ce9f9
[   36.190678] RDX: 008680012000001b RSI: 0000000000000008 RDI: ffff888015aa3008
[   36.191595] RBP: ffff888016859bc0 R08: ffff888015aa3008 R09: 0000000000000000
[   36.192501] R10: 0000000000000000 R11: 00000000000b6996 R12: ffff888015aa3000
[   36.193406] R13: dffffc0000000000 R14: 04340009000000db R15: ffffffff816e61c0
[   36.194265] FS:  00007f46e52ed840(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[   36.195261] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.196007] CR2: 00007f46e4ec9000 CR3: 000000000e5ac000 CR4: 0000000000350ef0
executing program

VM DIAGNOSIS:
23:16:51  Registers:
info registers vcpu 0
RAX=0000000000000001 RBX=ffff88800fd6c898 RCX=0000000000000000 RDX=1ffff11001fad913
RSI=0000000000000283 RDI=ffffffff856d8220 RBP=ffff88800947e130 RSP=ffff888008d7fcc0
R8 =0000000000000001 R9 =ffffed10011aff87 R10=0000000000000003 R11=0000000000000128
R12=0000000000000283 R13=ffff88801a0fa508 R14=ffffffff8186b9c5 R15=ffff88800e1f2e00
RIP=ffffffff8452ffd4 RFL=00000002 [-------] 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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 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=00007f3616e0b650 CR3=00000000194f2000 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=00000000000000000000000000000000 XMM01=000000000000000000000000000000ff
XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45
XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a
XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000
XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000
XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000
XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000
XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000
info registers vcpu 1
RAX=ffff88801981fb00 RBX=ffff88801981fa80 RCX=0000000000004581 RDX=0000000000004541
RSI=0000000000000008 RDI=0000000000004541 RBP=ffff88801587f688 RSP=ffff88801587f630
R8 =ffff88801981fb00 R9 =000000000003d2c0 R10=ffffffff85d3bed7 R11=00000000000b6996
R12=ffff888008442780 R13=0000000000400cd0 R14=ffff88800da13b00 R15=0000000000000000
RIP=ffffffff8180ada4 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 =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS   [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 00007fdef5eec900 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=00007fdef533dd10 CR3=000000000dc70000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134
XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572
XMM04=698cc50428cfbe7e00000000000ae988 XMM05=ee1d6e16ad1e6f6800000000001347e0
XMM06=bdf2e299e47b49d50000000000133260 XMM07=00000000000000000000000000000000
XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000
XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000
XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000
XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000