syzkaller login: [ 30.797597] BUG: Bad rss-counter state mm:0000000003a24b12 type:MM_FILEPAGES val:33 [ 30.798798] BUG: Bad rss-counter state mm:0000000003a24b12 type:MM_ANONPAGES val:22 [ 30.827351] ================================================================== [ 30.828247] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.829192] Read of size 8 at addr ffff88801922dd08 by task sshd/220 [ 30.829935] [ 30.830121] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.831038] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.831972] Call Trace: [ 30.832306] [ 30.832545] dump_stack_lvl+0x91/0xf0 [ 30.833022] print_report+0xcc/0x620 [ 30.833527] ? __virt_addr_valid+0x102/0x340 [ 30.834082] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.834670] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.835305] kasan_report+0xbe/0xf0 [ 30.835784] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.836402] vma_interval_tree_remove+0xc75/0xec0 [ 30.837016] vma_prepare+0xc54/0x11a0 [ 30.837448] __split_vma+0x5af/0x950 [ 30.837901] ? __pfx___split_vma+0x10/0x10 [ 30.838445] ? find_held_lock+0x2c/0x110 [ 30.838988] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.839469] ? lock_is_held_type+0x9f/0x120 [ 30.839922] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.840592] ? mtree_range_walk+0x632/0x900 [ 30.841058] ? mas_walk+0x5c7/0x7c0 [ 30.841459] do_vmi_munmap+0x1f1/0x2b0 [ 30.841874] mmap_region+0x1f9/0x2660 [ 30.842281] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.842721] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.843469] ? __pfx_lock_acquire+0x10/0x10 [ 30.843951] ? __pfx_mmap_region+0x10/0x10 [ 30.844491] ? security_mmap_addr+0x7d/0xa0 [ 30.845049] ? get_unmapped_area+0x1f5/0x3f0 [ 30.845515] do_mmap+0x854/0xf00 [ 30.845986] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.846442] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.847027] ksys_mmap_pgoff+0x3af/0x500 [ 30.847584] do_syscall_64+0x3f/0x90 [ 30.848082] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.848634] RIP: 0033:0x7f0c8abe7d82 [ 30.849028] 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 [ 30.850857] RSP: 002b:00007ffe1d8bcfb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.851633] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0c8abe7d82 [ 30.852355] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0c8a021000 [ 30.853078] RBP: 00007f0c8a021000 R08: 0000000000000009 R09: 0000000000001000 [ 30.853814] R10: 0000000000000812 R11: 0000000000000206 R12: 000055f35c255ec0 [ 30.854559] R13: 00007ffe1d8bcfd0 R14: 00007ffe1d8bd000 R15: 00007ffe1d8bd360 [ 30.855281] [ 30.855546] [ 30.855733] Allocated by task 213: [ 30.856100] kasan_save_stack+0x22/0x50 [ 30.856538] kasan_set_track+0x25/0x30 [ 30.857132] __kasan_slab_alloc+0x59/0x70 [ 30.857574] kmem_cache_alloc+0x16b/0x370 [ 30.858017] vm_area_dup+0x20/0x160 [ 30.858405] __split_vma+0x170/0x950 [ 30.858809] split_vma+0xc6/0x110 [ 30.859180] mprotect_fixup+0x8d2/0xb30 [ 30.859621] do_mprotect_pkey+0x87e/0xd40 [ 30.860063] __x64_sys_mprotect+0x78/0xc0 [ 30.860511] do_syscall_64+0x3f/0x90 [ 30.860916] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.861465] [ 30.861649] Freed by task 213: [ 30.861983] kasan_save_stack+0x22/0x50 [ 30.862409] kasan_set_track+0x25/0x30 [ 30.862830] kasan_save_free_info+0x2b/0x50 [ 30.863280] __kasan_slab_free+0x10a/0x190 [ 30.863761] kmem_cache_free+0x10d/0x4d0 [ 30.864202] rcu_core+0x8c8/0x2860 [ 30.864585] __do_softirq+0x1b7/0x7d4 [ 30.865004] [ 30.865189] Last potentially related work creation: [ 30.865706] kasan_save_stack+0x22/0x50 [ 30.866146] __kasan_record_aux_stack+0x8e/0xa0 [ 30.866651] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.867222] remove_vma+0x139/0x170 [ 30.867617] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.868107] do_vmi_munmap+0x1f1/0x2b0 [ 30.868521] __vm_munmap+0x138/0x3a0 [ 30.868925] __x64_sys_munmap+0x59/0x80 [ 30.869366] do_syscall_64+0x3f/0x90 [ 30.869777] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.870326] [ 30.870511] The buggy address belongs to the object at ffff88801922dcb0 [ 30.870511] which belongs to the cache vm_area_struct of size 168 [ 30.871808] The buggy address is located 88 bytes inside of [ 30.871808] freed 168-byte region [ffff88801922dcb0, ffff88801922dd58) [ 30.873046] [ 30.873231] The buggy address belongs to the physical page: [ 30.873807] page:0000000017b9c9ff refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1922d [ 30.874760] memcg:ffff88800db37901 [ 30.875138] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.875718] page_type: 0xffffffff() [ 30.876119] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.876923] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800db37901 [ 30.877715] page dumped because: kasan: bad access detected [ 30.878286] [ 30.878473] Memory state around the buggy address: [ 30.878989] ffff88801922dc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 30.879744] ffff88801922dc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 30.880492] >ffff88801922dd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 30.881218] ^ [ 30.881594] ffff88801922dd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 30.882336] ffff88801922de00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.883070] ================================================================== [ 30.883862] Disabling lock debugging due to kernel taint [ 32.780527] BUG: Bad rss-counter state mm:0000000073c23486 type:MM_FILEPAGES val:33 [ 32.781614] BUG: Bad rss-counter state mm:0000000073c23486 type:MM_ANONPAGES val:22 [ 33.253063] BUG: Bad rss-counter state mm:000000009293167e type:MM_FILEPAGES val:33 [ 33.254353] BUG: Bad rss-counter state mm:000000009293167e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:37875' (ECDSA) to the list of known hosts. 2023/06/21 02:45:01 fuzzer started 2023/06/21 02:45:01 dialing manager at localhost:36067 2023/06/21 02:45:01 checking machine... 2023/06/21 02:45:01 checking revisions... [ 33.998699] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:45:01 testing simple program... [ 34.050406] cgroup: Unknown subsys name 'net' [ 34.092212] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:45:00 Registers: info registers vcpu 0 RAX=1ffffffff0bb2584 RBX=ffffffff85d92c20 RCX=ffffffff81132ffd RDX=0000000000000000 RSI=ffffffff86098092 RDI=ffffffff85d92c20 RBP=ffffffff85d92c20 RSP=ffff88806ce09990 R8 =ffffffff86098092 R9 =0000000000000000 R10=0000000000038001 R11=0000000000006097 R12=ffffffff85d92c20 R13=ffffffff85d92c20 R14=ffffffff85d92c20 R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000216 [----AP-] 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 00007f570d422900 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=00007f570c813470 CR3=000000000c6fe000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=f5a607a68aa5ad6700000000000ae988 XMM05=10181265e25a02320000000000133358 XMM06=4fda316b135da52b0000000000132148 XMM07=fb795ef6d65770560000000000122400 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffffffff85d899fc RCX=ffffffff810bd032 RDX=0000000000000002 RSI=ffffffff8608a556 RDI=ffffffff85d899f8 RBP=ffffffff85d899f8 RSP=ffff88800fb9f208 R8 =ffffffff8608a556 R9 =ffff88800fb9f350 R10=0000000000038001 R11=0000000000003c0d R12=ffffffff85d89a00 R13=ffffffff85d899f8 R14=ffffffff85d899f8 R15=dffffc0000000000 RIP=ffffffff8112fc73 RFL=00000212 [----A--] 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 00007fc54bfe8900 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=00007fffa4567000 CR3=00000000166ea000 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=00000000000000000000000000000000 XMM01=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000