syzkaller login: [ 33.717659] BUG: Bad rss-counter state mm:00000000ad979ee6 type:MM_FILEPAGES val:33 [ 33.718657] BUG: Bad rss-counter state mm:00000000ad979ee6 type:MM_ANONPAGES val:22 [ 33.877759] ================================================================== [ 33.878707] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 33.879681] Read of size 8 at addr ffff88801a1186b0 by task sshd/222 [ 33.880503] [ 33.880822] CPU: 0 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 33.881719] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 33.882733] Call Trace: [ 33.883066] [ 33.883363] dump_stack_lvl+0x91/0xf0 [ 33.883881] print_report+0xcc/0x620 [ 33.884382] ? __virt_addr_valid+0x102/0x340 [ 33.884949] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.885592] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.886247] kasan_report+0xbe/0xf0 [ 33.886740] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.887388] vma_interval_tree_remove+0xc75/0xec0 [ 33.888047] vma_prepare+0xc54/0x11a0 [ 33.888538] __split_vma+0x5af/0x950 [ 33.889028] ? __pfx___split_vma+0x10/0x10 [ 33.889580] ? find_held_lock+0x2c/0x110 [ 33.890122] do_vmi_align_munmap+0x2ba/0x11f0 [ 33.890704] ? lock_is_held_type+0x9f/0x120 [ 33.891260] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 33.891900] ? mtree_range_walk+0x632/0x900 [ 33.892470] ? mas_walk+0x5c7/0x7c0 [ 33.892961] do_vmi_munmap+0x1f1/0x2b0 [ 33.893477] mmap_region+0x1f9/0x2660 [ 33.893971] ? vm_mmap_pgoff+0x15c/0x3a0 [ 33.894504] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 33.895244] ? __pfx_lock_acquire+0x10/0x10 [ 33.895798] ? __pfx_mmap_region+0x10/0x10 [ 33.896371] ? security_mmap_addr+0x7d/0xa0 [ 33.896924] ? get_unmapped_area+0x1f5/0x3f0 [ 33.897491] do_mmap+0x854/0xf00 [ 33.897949] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.898462] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 33.899047] ksys_mmap_pgoff+0x3af/0x500 [ 33.899572] do_syscall_64+0x3f/0x90 [ 33.900081] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.900747] RIP: 0033:0x7fc48a13fd82 [ 33.901217] 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 [ 33.903474] RSP: 002b:00007ffdcea2c2e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 33.904452] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc48a13fd82 [ 33.905371] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc489579000 [ 33.906286] RBP: 00007fc489579000 R08: 0000000000000009 R09: 0000000000001000 [ 33.907174] R10: 0000000000000812 R11: 0000000000000206 R12: 0000557bb9e9fec0 [ 33.908072] R13: 00007ffdcea2c300 R14: 00007ffdcea2c330 R15: 00007ffdcea2c690 [ 33.908984] [ 33.909297] [ 33.909525] Allocated by task 215: [ 33.909985] kasan_save_stack+0x22/0x50 [ 33.910514] kasan_set_track+0x25/0x30 [ 33.911046] __kasan_slab_alloc+0x59/0x70 [ 33.911607] kmem_cache_alloc+0x16b/0x370 [ 33.912157] vm_area_dup+0x20/0x160 [ 33.912625] __split_vma+0x170/0x950 [ 33.913118] split_vma+0xc6/0x110 [ 33.913578] mprotect_fixup+0x8d2/0xb30 [ 33.914097] do_mprotect_pkey+0x87e/0xd40 [ 33.914639] __x64_sys_mprotect+0x78/0xc0 [ 33.915181] do_syscall_64+0x3f/0x90 [ 33.915677] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.916328] [ 33.916543] Freed by task 215: [ 33.916961] kasan_save_stack+0x22/0x50 [ 33.917463] kasan_set_track+0x25/0x30 [ 33.917956] kasan_save_free_info+0x2b/0x50 [ 33.918490] __kasan_slab_free+0x10a/0x190 [ 33.919015] kmem_cache_free+0x10d/0x4d0 [ 33.919520] rcu_core+0x8c8/0x2860 [ 33.919979] __do_softirq+0x1b7/0x7d4 [ 33.920454] [ 33.920670] Last potentially related work creation: [ 33.921253] kasan_save_stack+0x22/0x50 [ 33.921755] __kasan_record_aux_stack+0x8e/0xa0 [ 33.922334] __call_rcu_common.constprop.0+0x6a/0xb90 [ 33.922972] remove_vma+0x139/0x170 [ 33.923427] do_vmi_align_munmap+0xd4a/0x11f0 [ 33.924001] do_vmi_munmap+0x1f1/0x2b0 [ 33.924500] __vm_munmap+0x138/0x3a0 [ 33.924973] __x64_sys_munmap+0x59/0x80 [ 33.925480] do_syscall_64+0x3f/0x90 [ 33.925980] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.926656] [ 33.926879] The buggy address belongs to the object at ffff88801a118658 [ 33.926879] which belongs to the cache vm_area_struct of size 168 [ 33.928459] The buggy address is located 88 bytes inside of [ 33.928459] freed 168-byte region [ffff88801a118658, ffff88801a118700) [ 33.929942] [ 33.930169] The buggy address belongs to the physical page: [ 33.930870] page:00000000721a27e1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a118 [ 33.932051] memcg:ffff888018d87d01 [ 33.932502] flags: 0x100000000000200(slab|node=0|zone=1) [ 33.933180] page_type: 0xffffffff() [ 33.933652] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 33.934624] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888018d87d01 [ 33.935589] page dumped because: kasan: bad access detected [ 33.936296] [ 33.936518] Memory state around the buggy address: [ 33.937137] ffff88801a118580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 33.938037] ffff88801a118600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 33.938937] >ffff88801a118680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.939836] ^ [ 33.940458] ffff88801a118700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 33.941362] ffff88801a118780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 33.942257] ================================================================== [ 33.943260] Disabling lock debugging due to kernel taint [ 36.320974] BUG: Bad rss-counter state mm:0000000004910e47 type:MM_FILEPAGES val:33 [ 36.322654] BUG: Bad rss-counter state mm:0000000004910e47 type:MM_ANONPAGES val:22 [ 36.806971] BUG: Bad rss-counter state mm:00000000ac386e48 type:MM_FILEPAGES val:33 [ 36.808126] BUG: Bad rss-counter state mm:00000000ac386e48 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:59284' (ECDSA) to the list of known hosts. 2023/06/20 07:32:09 fuzzer started 2023/06/20 07:32:10 dialing manager at localhost:44161 2023/06/20 07:32:10 checking machine... 2023/06/20 07:32:10 checking revisions... [ 37.533256] kmemleak: Automatic memory scanning thread ended 2023/06/20 07:32:10 testing simple program... [ 37.582352] cgroup: Unknown subsys name 'net' [ 37.623979] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:32:06 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000014 RCX=0000000000000001 RDX=ffffea0000394000 RSI=0000000000000014 RDI=ffff88800e504ec0 RBP=ffff88800e504ed4 RSP=ffff88801a1ff870 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000001 R11=0000000000000000 R12=ffff88800e504ec0 R13=0000000000000001 R14=0000000000000001 R15=ffffea0000394000 RIP=ffffffff8180b9b0 RFL=00000293 [--S-A-C] 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 00007f86c15d1900 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=00007f86c1b88618 CR3=000000000da66000 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=563412feff00545000000000000080fe XMM01=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 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=00007fb4782b3c80 CR3=000000000c778000 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=98015867df47a78afa4a34049e4a28da XMM02=ec2efd57dc4c00df000000000011c788 XMM03=9a74c1c50e9bc086000000000011c858 XMM04=6e115bd56fd3588a00000000000ae988 XMM05=59d5b690e0af863b0000000000133be0 XMM06=00c3ffa147b8d8570000000000133a68 XMM07=e042d86d42eb936e0000000000124308 XMM08=9a74c1c50e9bc086000000000011c858 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000