syzkaller login: [ 38.757431] BUG: Bad rss-counter state mm:000000009ef883ca type:MM_FILEPAGES val:33 [ 38.758695] BUG: Bad rss-counter state mm:000000009ef883ca type:MM_ANONPAGES val:22 [ 38.899422] ================================================================== [ 38.900498] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.901596] Read of size 8 at addr ffff88800d540310 by task sshd/219 [ 38.902678] [ 38.902936] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.903948] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.905076] Call Trace: [ 38.905394] [ 38.905674] dump_stack_lvl+0x91/0xf0 [ 38.906162] print_report+0xcc/0x620 [ 38.906656] ? __virt_addr_valid+0x102/0x340 [ 38.907200] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.907811] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.908431] kasan_report+0xbe/0xf0 [ 38.908907] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.909521] vma_interval_tree_remove+0xc75/0xec0 [ 38.910117] vma_prepare+0xc54/0x11a0 [ 38.910598] __split_vma+0x5af/0x950 [ 38.911063] ? __pfx___split_vma+0x10/0x10 [ 38.911590] ? find_held_lock+0x2c/0x110 [ 38.912105] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.912666] ? lock_is_held_type+0x9f/0x120 [ 38.913196] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.913796] ? mtree_range_walk+0x632/0x900 [ 38.914361] ? mas_walk+0x5c7/0x7c0 [ 38.914836] do_vmi_munmap+0x1f1/0x2b0 [ 38.915321] mmap_region+0x1f9/0x2660 [ 38.915796] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.916300] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.916999] ? __pfx_lock_acquire+0x10/0x10 [ 38.917527] ? __pfx_mmap_region+0x10/0x10 [ 38.918049] ? security_mmap_addr+0x7d/0xa0 [ 38.918601] ? get_unmapped_area+0x1f5/0x3f0 [ 38.919153] do_mmap+0x854/0xf00 [ 38.919588] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.920077] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.920635] ksys_mmap_pgoff+0x3af/0x500 [ 38.921143] do_syscall_64+0x3f/0x90 [ 38.921618] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.922264] RIP: 0033:0x7f4509f5ad82 [ 38.922747] 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 [ 38.924834] RSP: 002b:00007ffd0a6a0d08 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.925727] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f4509f5ad82 [ 38.926570] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f4509394000 [ 38.927407] RBP: 00007f4509394000 R08: 0000000000000009 R09: 0000000000001000 [ 38.928257] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a5f0734f70 [ 38.929099] R13: 00007ffd0a6a0d20 R14: 00007ffd0a6a0d50 R15: 00007ffd0a6a10b0 [ 38.929945] [ 38.930234] [ 38.930456] Allocated by task 212: [ 38.930877] kasan_save_stack+0x22/0x50 [ 38.931382] kasan_set_track+0x25/0x30 [ 38.931865] __kasan_slab_alloc+0x59/0x70 [ 38.932382] kmem_cache_alloc+0x16b/0x370 [ 38.932890] vm_area_dup+0x20/0x160 [ 38.933342] __split_vma+0x170/0x950 [ 38.933802] split_vma+0xc6/0x110 [ 38.934234] mprotect_fixup+0x8d2/0xb30 [ 38.934749] do_mprotect_pkey+0x87e/0xd40 [ 38.935271] __x64_sys_mprotect+0x78/0xc0 [ 38.935785] do_syscall_64+0x3f/0x90 [ 38.936254] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.936897] [ 38.937108] Freed by task 212: [ 38.937500] kasan_save_stack+0x22/0x50 [ 38.937998] kasan_set_track+0x25/0x30 [ 38.938492] kasan_save_free_info+0x2b/0x50 [ 38.939018] __kasan_slab_free+0x10a/0x190 [ 38.939543] kmem_cache_free+0x10d/0x4d0 [ 38.940048] rcu_core+0x8c8/0x2860 [ 38.940490] __do_softirq+0x1b7/0x7d4 [ 38.940960] [ 38.941177] Last potentially related work creation: [ 38.941761] kasan_save_stack+0x22/0x50 [ 38.942256] __kasan_record_aux_stack+0x8e/0xa0 [ 38.942850] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.943487] remove_vma+0x139/0x170 [ 38.943976] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.944525] do_vmi_munmap+0x1f1/0x2b0 [ 38.945007] __vm_munmap+0x138/0x3a0 [ 38.945475] __x64_sys_munmap+0x59/0x80 [ 38.945965] do_syscall_64+0x3f/0x90 [ 38.946442] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.947097] [ 38.947314] Second to last potentially related work creation: [ 38.947996] kasan_save_stack+0x22/0x50 [ 38.948495] __kasan_record_aux_stack+0x8e/0xa0 [ 38.949067] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.949709] remove_vma+0x139/0x170 [ 38.950163] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.950727] do_vmi_munmap+0x1f1/0x2b0 [ 38.951207] __vm_munmap+0x138/0x3a0 [ 38.951676] elf_map+0x26f/0x310 [ 38.952118] load_elf_binary+0x3417/0x5030 [ 38.952652] bprm_execve+0x803/0x1940 [ 38.953120] do_execveat_common+0x734/0x8e0 [ 38.953654] __x64_sys_execve+0x93/0xc0 [ 38.954148] do_syscall_64+0x3f/0x90 [ 38.954639] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.955282] [ 38.955500] The buggy address belongs to the object at ffff88800d5402b8 [ 38.955500] which belongs to the cache vm_area_struct of size 168 [ 38.956975] The buggy address is located 88 bytes inside of [ 38.956975] freed 168-byte region [ffff88800d5402b8, ffff88800d540360) [ 38.958396] [ 38.958609] The buggy address belongs to the physical page: [ 38.959269] page:00000000f5952325 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd540 [ 38.960359] memcg:ffff888009038801 [ 38.960783] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.961490] page_type: 0xffffffff() [ 38.961936] raw: 0100000000000200 ffff8880087a0c80 ffffea00003f2880 dead000000000003 [ 38.962873] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888009038801 [ 38.963802] page dumped because: kasan: bad access detected [ 38.964462] [ 38.964675] Memory state around the buggy address: [ 38.965268] ffff88800d540200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 38.966121] ffff88800d540280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 38.966988] >ffff88800d540300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 38.967831] ^ [ 38.968300] ffff88800d540380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.969155] ffff88800d540400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 38.970025] ================================================================== [ 38.970957] Disabling lock debugging due to kernel taint [ 41.722428] BUG: Bad rss-counter state mm:00000000653a5e92 type:MM_FILEPAGES val:33 [ 41.723626] BUG: Bad rss-counter state mm:00000000653a5e92 type:MM_ANONPAGES val:22 [ 42.215321] BUG: Bad rss-counter state mm:00000000e34a4ba7 type:MM_FILEPAGES val:33 [ 42.216480] BUG: Bad rss-counter state mm:00000000e34a4ba7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:14173' (ECDSA) to the list of known hosts. 2023/06/21 07:25:06 fuzzer started 2023/06/21 07:25:06 dialing manager at localhost:36067 2023/06/21 07:25:06 checking machine... 2023/06/21 07:25:06 checking revisions... [ 42.962712] kmemleak: Automatic memory scanning thread ended 2023/06/21 07:25:07 testing simple program... [ 43.007374] cgroup: Unknown subsys name 'net' [ 43.049640] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:25:06 Registers: info registers vcpu 0 RAX=ffffffff864b2f3e RBX=0000000000000002 RCX=ffffffff8451105d RDX=0000000000000000 RSI=ffffffff864b2f26 RDI=ffffffff8604f5d8 RBP=ffff88806ce09af0 RSP=ffff88806ce09a28 R8 =ffffffff864b2f26 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=00000000000b5305 R12=ffff88806ce09af8 R13=ffff88806ce09ae0 R14=ffff88806ce09ad9 R15=ffff88806ce09a98 RIP=ffffffff81130881 RFL=00000286 [--S--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 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=00007ff83ca62950 CR3=000000001463a000 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=ca674cabe9a37dba20485bed22d366fe XMM02=000000000011b648ec2efd57dc4c00df XMM03=00000000001220081b0579c296f6cfc5 XMM04=4adcc58838c8a8db00000000000ae988 XMM05=dfcdbad4f1609c370000000000133328 XMM06=806171799158d96700000000001331b0 XMM07=e042d86d42eb936e00000000001222e0 XMM08=1b0579c296f6cfc5000000000011b6a8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=000000000000000c RBX=ffff8880163b8ec0 RCX=0000000000000000 RDX=0000000000000004 RSI=ffff88800cf0c57c RDI=ffff8880163b8ed0 RBP=ffff88800cf0c000 RSP=ffff88800fd5f828 R8 =0000000000000004 R9 =000000000000000c R10=000000000000000c R11=00000000000b6a61 R12=ffff88801a142640 R13=ffff88800cf0c57c R14=ffff88800cf0c579 R15=ffff88800cf0c600 RIP=ffffffff84513064 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 00007f7a8cf83900 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=00007ffd20d4c000 CR3=000000001c682000 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