syzkaller login: [ 32.146812] BUG: Bad rss-counter state mm:0000000063e0e4f0 type:MM_FILEPAGES val:33 [ 32.147810] BUG: Bad rss-counter state mm:0000000063e0e4f0 type:MM_ANONPAGES val:22 [ 32.311575] ================================================================== [ 32.312479] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.313518] Read of size 8 at addr ffff888019430968 by task sshd/221 [ 32.314349] [ 32.314565] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.315440] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.316475] Call Trace: [ 32.316803] [ 32.317121] dump_stack_lvl+0x91/0xf0 [ 32.317613] print_report+0xcc/0x620 [ 32.318103] ? __virt_addr_valid+0x102/0x340 [ 32.318658] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.319301] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.319922] kasan_report+0xbe/0xf0 [ 32.320405] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.321068] vma_interval_tree_remove+0xc75/0xec0 [ 32.321685] vma_prepare+0xc54/0x11a0 [ 32.322161] __split_vma+0x5af/0x950 [ 32.322644] ? __pfx___split_vma+0x10/0x10 [ 32.323170] ? find_held_lock+0x2c/0x110 [ 32.323693] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.324256] ? lock_is_held_type+0x9f/0x120 [ 32.324792] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.325407] ? mtree_range_walk+0x632/0x900 [ 32.325957] ? mas_walk+0x5c7/0x7c0 [ 32.326427] do_vmi_munmap+0x1f1/0x2b0 [ 32.326916] mmap_region+0x1f9/0x2660 [ 32.327397] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.327909] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.328621] ? __pfx_lock_acquire+0x10/0x10 [ 32.329182] ? __pfx_mmap_region+0x10/0x10 [ 32.329741] ? security_mmap_addr+0x7d/0xa0 [ 32.330292] ? get_unmapped_area+0x1f5/0x3f0 [ 32.330843] do_mmap+0x854/0xf00 [ 32.331302] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.331815] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.332387] ksys_mmap_pgoff+0x3af/0x500 [ 32.332901] do_syscall_64+0x3f/0x90 [ 32.333411] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.334072] RIP: 0033:0x7f55f6bd7d82 [ 32.334547] 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 [ 32.336753] RSP: 002b:00007fff294407d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.337720] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f55f6bd7d82 [ 32.338600] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f55f6011000 [ 32.339467] RBP: 00007f55f6011000 R08: 0000000000000009 R09: 0000000000001000 [ 32.340336] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562bc201dec0 [ 32.341240] R13: 00007fff294407f0 R14: 00007fff29440820 R15: 00007fff29440b80 [ 32.342120] [ 32.342421] [ 32.342645] Allocated by task 213: [ 32.343085] kasan_save_stack+0x22/0x50 [ 32.343591] kasan_set_track+0x25/0x30 [ 32.344119] __kasan_slab_alloc+0x59/0x70 [ 32.344645] kmem_cache_alloc+0x16b/0x370 [ 32.345178] vm_area_dup+0x20/0x160 [ 32.345631] __split_vma+0x170/0x950 [ 32.346094] split_vma+0xc6/0x110 [ 32.346544] mprotect_fixup+0x8d2/0xb30 [ 32.347038] do_mprotect_pkey+0x87e/0xd40 [ 32.347553] __x64_sys_mprotect+0x78/0xc0 [ 32.348069] do_syscall_64+0x3f/0x90 [ 32.348534] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.349183] [ 32.349400] Freed by task 61: [ 32.349780] kasan_save_stack+0x22/0x50 [ 32.350288] kasan_set_track+0x25/0x30 [ 32.350792] kasan_save_free_info+0x2b/0x50 [ 32.351329] __kasan_slab_free+0x10a/0x190 [ 32.351862] kmem_cache_free+0x10d/0x4d0 [ 32.352378] rcu_core+0x8c8/0x2860 [ 32.352821] __do_softirq+0x1b7/0x7d4 [ 32.353304] [ 32.353533] Last potentially related work creation: [ 32.354131] kasan_save_stack+0x22/0x50 [ 32.354644] __kasan_record_aux_stack+0x8e/0xa0 [ 32.355231] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.355873] remove_vma+0x139/0x170 [ 32.356322] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.356886] do_vmi_munmap+0x1f1/0x2b0 [ 32.357391] __vm_munmap+0x138/0x3a0 [ 32.357858] __x64_sys_munmap+0x59/0x80 [ 32.358355] do_syscall_64+0x3f/0x90 [ 32.358839] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.359486] [ 32.359702] Second to last potentially related work creation: [ 32.360387] kasan_save_stack+0x22/0x50 [ 32.360902] __kasan_record_aux_stack+0x8e/0xa0 [ 32.361500] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.362142] remove_vma+0x139/0x170 [ 32.362595] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.363156] do_vmi_munmap+0x1f1/0x2b0 [ 32.363643] mmap_region+0x1f9/0x2660 [ 32.364116] do_mmap+0x854/0xf00 [ 32.364545] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.365043] ksys_mmap_pgoff+0x3af/0x500 [ 32.365553] do_syscall_64+0x3f/0x90 [ 32.366021] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.366681] [ 32.366902] The buggy address belongs to the object at ffff888019430910 [ 32.366902] which belongs to the cache vm_area_struct of size 168 [ 32.368428] The buggy address is located 88 bytes inside of [ 32.368428] freed 168-byte region [ffff888019430910, ffff8880194309b8) [ 32.369900] [ 32.370114] The buggy address belongs to the physical page: [ 32.370809] page:0000000025485058 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19430 [ 32.371915] memcg:ffff88800fb6ce01 [ 32.372340] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 32.373055] page_type: 0xffffffff() [ 32.373503] raw: 0100000000000200 ffff88800879fc80 ffffea0000654680 000000000000000b [ 32.374412] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fb6ce01 [ 32.375310] page dumped because: kasan: bad access detected [ 32.375967] [ 32.376183] Memory state around the buggy address: [ 32.376795] ffff888019430800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 32.377677] ffff888019430880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 32.378563] >ffff888019430900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.379414] ^ [ 32.380193] ffff888019430980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 32.381053] ffff888019430a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 32.381905] ================================================================== [ 32.382855] Disabling lock debugging due to kernel taint [ 34.520218] BUG: Bad rss-counter state mm:00000000bd80991e type:MM_FILEPAGES val:33 [ 34.521603] BUG: Bad rss-counter state mm:00000000bd80991e type:MM_ANONPAGES val:22 [ 35.088048] BUG: Bad rss-counter state mm:00000000b2c64aa7 type:MM_FILEPAGES val:33 [ 35.089240] BUG: Bad rss-counter state mm:00000000b2c64aa7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:29364' (ECDSA) to the list of known hosts. 2023/06/20 08:26:45 fuzzer started 2023/06/20 08:26:45 dialing manager at localhost:44161 2023/06/20 08:26:46 checking machine... 2023/06/20 08:26:46 checking revisions... [ 35.851944] kmemleak: Automatic memory scanning thread ended 2023/06/20 08:26:46 testing simple program... [ 35.887792] cgroup: Unknown subsys name 'net' [ 35.922762] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 08:26:43 Registers: info registers vcpu 0 RAX=0000000000000120 RBX=000055ab9609f2d0 RCX=00007ffe38897508 RDX=00000000001263e8 RSI=0000000000000001 RDI=000055ab9609f2d0 RBP=00007ffe38897508 RSP=00007ffe388974b0 R8 =0000000000000058 R9 =000000000000000c R10=0000000000000002 R11=00007fc1f86c2e08 R12=00007fc1f86b0ce8 R13=00007fc1f86c2dc8 R14=0000000000000012 R15=0000000000136dc8 RIP=00007fc1f9d243b2 RFL=00000212 [----A--] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fc1f91a1900 00000000 00000000 GS =0000 0000000000000000 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=00007fc1f85b8890 CR3=0000000008dba000 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=000000000011d948b3285ca56c489dff XMM01=8d6a9baabdde66bf4640bacbea9c6fd3 XMM02=000000000011dc88ec2efd57dc4c00df XMM03=0000000000124a689b8c0f2b2f44868a XMM04=faa9cc7e7c3a669d00000000000ae988 XMM05=570995f2d4abca530000000000135dc0 XMM06=c291bd5c70af25b900000000001357b8 XMM07=e042d86d42eb936e0000000000124ce8 XMM08=9b8c0f2b2f44868a000000000011dce8 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000001 RCX=0000000000000001 RDX=0000000000000001 RSI=ffffffff8180b155 RDI=ffff888019147520 RBP=ffff888019147578 RSP=ffff8880191474b0 R8 =0000000000000001 R9 =ffff888019147560 R10=0000000000038001 R11=000000000000fc0f R12=ffff888019147580 R13=ffff888019147568 R14=ffff888019147561 R15=ffff888019147520 RIP=ffffffff811306e2 RFL=00000297 [--S-APC] 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 00007efd3ab9d900 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=00007efd3b154618 CR3=000000000c60a000 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=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