syzkaller login: [ 28.831274] BUG: Bad rss-counter state mm:00000000b83f2eb4 type:MM_FILEPAGES val:33 [ 28.832770] BUG: Bad rss-counter state mm:00000000b83f2eb4 type:MM_ANONPAGES val:22 [ 28.870778] ================================================================== [ 28.871794] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.872769] Read of size 8 at addr ffff88800f3026b0 by task sshd/220 [ 28.873595] [ 28.873820] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.874758] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.875787] Call Trace: [ 28.876129] [ 28.876438] dump_stack_lvl+0x91/0xf0 [ 28.876953] print_report+0xcc/0x620 [ 28.877462] ? __virt_addr_valid+0x102/0x340 [ 28.878072] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.878723] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.879384] kasan_report+0xbe/0xf0 [ 28.879873] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.880534] vma_interval_tree_remove+0xc75/0xec0 [ 28.881169] vma_prepare+0xc54/0x11a0 [ 28.881679] __split_vma+0x5af/0x950 [ 28.882186] ? __pfx___split_vma+0x10/0x10 [ 28.882749] ? find_held_lock+0x2c/0x110 [ 28.883305] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.883902] ? lock_is_held_type+0x9f/0x120 [ 28.884468] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.885108] ? mtree_range_walk+0x632/0x900 [ 28.885697] ? mas_walk+0x5c7/0x7c0 [ 28.886210] do_vmi_munmap+0x1f1/0x2b0 [ 28.886733] mmap_region+0x1f9/0x2660 [ 28.887252] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.887788] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.888541] ? __pfx_lock_acquire+0x10/0x10 [ 28.889098] ? __pfx_mmap_region+0x10/0x10 [ 28.889648] ? security_mmap_addr+0x7d/0xa0 [ 28.890231] ? get_unmapped_area+0x1f5/0x3f0 [ 28.890815] do_mmap+0x854/0xf00 [ 28.891275] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.891799] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.892402] ksys_mmap_pgoff+0x3af/0x500 [ 28.892931] do_syscall_64+0x3f/0x90 [ 28.893452] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.894143] RIP: 0033:0x7fb9b873bd82 [ 28.894626] 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 [ 28.896852] RSP: 002b:00007fff22d3d838 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.897816] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb9b873bd82 [ 28.898718] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb9b7b75000 [ 28.899623] RBP: 00007fb9b7b75000 R08: 0000000000000009 R09: 0000000000001000 [ 28.900530] R10: 0000000000000812 R11: 0000000000000206 R12: 000055da2dc02f60 [ 28.901418] R13: 00007fff22d3d850 R14: 00007fff22d3d880 R15: 00007fff22d3dbe0 [ 28.902332] [ 28.902646] [ 28.902872] Allocated by task 213: [ 28.903330] kasan_save_stack+0x22/0x50 [ 28.903857] kasan_set_track+0x25/0x30 [ 28.904377] __kasan_slab_alloc+0x59/0x70 [ 28.904923] kmem_cache_alloc+0x16b/0x370 [ 28.905466] vm_area_dup+0x20/0x160 [ 28.905939] __split_vma+0x170/0x950 [ 28.906432] split_vma+0xc6/0x110 [ 28.906889] mprotect_fixup+0x8d2/0xb30 [ 28.907430] do_mprotect_pkey+0x87e/0xd40 [ 28.907984] __x64_sys_mprotect+0x78/0xc0 [ 28.908538] do_syscall_64+0x3f/0x90 [ 28.909031] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.909712] [ 28.909957] Freed by task 213: [ 28.910384] kasan_save_stack+0x22/0x50 [ 28.910916] kasan_set_track+0x25/0x30 [ 28.911450] kasan_save_free_info+0x2b/0x50 [ 28.912000] __kasan_slab_free+0x10a/0x190 [ 28.912566] kmem_cache_free+0x10d/0x4d0 [ 28.913103] rcu_core+0x8c8/0x2860 [ 28.913582] __do_softirq+0x1b7/0x7d4 [ 28.914086] [ 28.914317] Last potentially related work creation: [ 28.914935] kasan_save_stack+0x22/0x50 [ 28.915461] __kasan_record_aux_stack+0x8e/0xa0 [ 28.916060] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.916731] remove_vma+0x139/0x170 [ 28.917205] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.917789] do_vmi_munmap+0x1f1/0x2b0 [ 28.918310] __vm_munmap+0x138/0x3a0 [ 28.918809] __x64_sys_munmap+0x59/0x80 [ 28.919343] do_syscall_64+0x3f/0x90 [ 28.919845] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.920523] [ 28.920748] Second to last potentially related work creation: [ 28.921471] kasan_save_stack+0x22/0x50 [ 28.922020] __kasan_record_aux_stack+0x8e/0xa0 [ 28.922637] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.923325] remove_vma+0x139/0x170 [ 28.923808] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.924408] do_vmi_munmap+0x1f1/0x2b0 [ 28.924921] __vm_munmap+0x138/0x3a0 [ 28.925422] elf_map+0x26f/0x310 [ 28.925888] load_elf_binary+0xd82/0x5030 [ 28.926443] bprm_execve+0x803/0x1940 [ 28.926938] do_execveat_common+0x734/0x8e0 [ 28.927483] __x64_sys_execve+0x93/0xc0 [ 28.927991] do_syscall_64+0x3f/0x90 [ 28.928495] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.929168] [ 28.929397] The buggy address belongs to the object at ffff88800f302658 [ 28.929397] which belongs to the cache vm_area_struct of size 168 [ 28.930972] The buggy address is located 88 bytes inside of [ 28.930972] freed 168-byte region [ffff88800f302658, ffff88800f302700) [ 28.932465] [ 28.932697] The buggy address belongs to the physical page: [ 28.933402] page:00000000af7b9043 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf302 [ 28.934550] memcg:ffff88800b9f5701 [ 28.934999] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 28.935742] page_type: 0xffffffff() [ 28.936227] raw: 0100000000000200 ffff8880087a0c80 ffffea000036e2c0 dead000000000003 [ 28.937183] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800b9f5701 [ 28.938168] page dumped because: kasan: bad access detected [ 28.938880] [ 28.939109] Memory state around the buggy address: [ 28.939718] ffff88800f302580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.940628] ffff88800f302600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 28.941545] >ffff88800f302680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.942453] ^ [ 28.943080] ffff88800f302700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 28.943981] ffff88800f302780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 28.944888] ================================================================== [ 28.946022] Disabling lock debugging due to kernel taint [ 30.709145] BUG: Bad rss-counter state mm:0000000083211253 type:MM_FILEPAGES val:33 [ 30.709824] BUG: Bad rss-counter state mm:0000000083211253 type:MM_ANONPAGES val:22 [ 31.124062] BUG: Bad rss-counter state mm:0000000011703ab7 type:MM_FILEPAGES val:33 [ 31.125200] BUG: Bad rss-counter state mm:0000000011703ab7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:21040' (ECDSA) to the list of known hosts. 2023/06/21 00:32:39 fuzzer started 2023/06/21 00:32:39 dialing manager at localhost:36067 2023/06/21 00:32:39 checking machine... 2023/06/21 00:32:39 checking revisions... [ 31.864128] kmemleak: Automatic memory scanning thread ended 2023/06/21 00:32:39 testing simple program... [ 31.918212] cgroup: Unknown subsys name 'net' [ 31.974174] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:32:39 Registers: info registers vcpu 0 RAX=ffffffff8180aff4 RBX=ffffffff85dfddd0 RCX=ffffffff8180b005 RDX=0000000000000000 RSI=ffffffff86138b1a RDI=ffffffff85dfddd0 RBP=ffffffff85dfddd4 RSP=ffff88801a0ff8e8 R8 =ffffffff86138b1a R9 =ffff88801a0ff9e0 R10=0000000000038001 R11=0000000000020d03 R12=ffffffff85dfddd0 R13=ffffffff85dfddd0 R14=0000000000000000 R15=dffffc0000000000 RIP=ffffffff8112fca7 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 00007f0efcd81900 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=00007fff922d2000 CR3=0000000016d12000 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=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 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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=00007fa7b0ce8020 CR3=000000000c98c000 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=661bd8a8e3e80fbaa440c367ef43c2fa XMM02=ec2efd57dc4c00df0000000000119b80 XMM03=acb26053dd96d22a0000000000119c50 XMM04=16ee37d6d69f2eb300000000000ae988 XMM05=2e8095c433e2808e0000000000133540 XMM06=c291bd5c70af25b90000000000132968 XMM07=e042d86d42eb936e0000000000120f90 XMM08=acb26053dd96d22a0000000000119c50 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000