[ 23.764217] BUG: Bad rss-counter state mm:0000000010fde015 type:MM_FILEPAGES val:33 [ 23.765421] BUG: Bad rss-counter state mm:0000000010fde015 type:MM_ANONPAGES val:22 Debian GNU/Linux 11 syzkaller[ 23.913179] ================================================================== ttyS0 syzkal[ 23.914333] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 ler login: [ 23.915423] Read of size 8 at addr ffff88800e924a50 by task sshd/219 [ 23.916405] [ 23.916628] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.917502] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.918499] Call Trace: [ 23.918825] [ 23.919108] dump_stack_lvl+0x91/0xf0 [ 23.919596] print_report+0xcc/0x620 [ 23.920083] ? __virt_addr_valid+0x102/0x340 [ 23.920642] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.921263] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.921902] kasan_report+0xbe/0xf0 [ 23.922380] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.923013] vma_interval_tree_remove+0xc75/0xec0 [ 23.923624] vma_prepare+0xc54/0x11a0 [ 23.924110] __split_vma+0x5af/0x950 [ 23.924583] ? __pfx___split_vma+0x10/0x10 [ 23.925109] ? find_held_lock+0x2c/0x110 [ 23.925642] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.926223] ? lock_is_held_type+0x9f/0x120 [ 23.926764] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.927381] ? mtree_range_walk+0x632/0x900 [ 23.927940] ? mas_walk+0x5c7/0x7c0 [ 23.928423] do_vmi_munmap+0x1f1/0x2b0 [ 23.928920] mmap_region+0x1f9/0x2660 [ 23.929407] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.929937] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.930656] ? __pfx_lock_acquire+0x10/0x10 [ 23.931198] ? __pfx_mmap_region+0x10/0x10 [ 23.931734] ? security_mmap_addr+0x7d/0xa0 [ 23.932275] ? get_unmapped_area+0x1f5/0x3f0 [ 23.932825] do_mmap+0x854/0xf00 [ 23.933275] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.933797] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.934371] ksys_mmap_pgoff+0x3af/0x500 [ 23.934882] do_syscall_64+0x3f/0x90 [ 23.935370] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.936032] RIP: 0033:0x7f2e0167cd82 [ 23.936492] 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 [ 23.938648] RSP: 002b:00007ffdcb0be7b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.939571] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f2e0167cd82 [ 23.940430] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f2e00ab6000 [ 23.941289] RBP: 00007f2e00ab6000 R08: 0000000000000009 R09: 0000000000001000 [ 23.942155] R10: 0000000000000812 R11: 0000000000000206 R12: 0000563251114ec0 [ 23.943007] R13: 00007ffdcb0be7d0 R14: 00007ffdcb0be800 R15: 00007ffdcb0beb60 [ 23.943862] [ 23.944159] [ 23.944373] Allocated by task 212: [ 23.944817] kasan_save_stack+0x22/0x50 [ 23.945332] kasan_set_track+0x25/0x30 [ 23.945857] __kasan_slab_alloc+0x59/0x70 [ 23.946395] kmem_cache_alloc+0x16b/0x370 [ 23.946919] vm_area_dup+0x20/0x160 [ 23.947374] __split_vma+0x170/0x950 [ 23.947834] split_vma+0xc6/0x110 [ 23.948279] mprotect_fixup+0x8d2/0xb30 [ 23.948791] do_mprotect_pkey+0x87e/0xd40 [ 23.949323] __x64_sys_mprotect+0x78/0xc0 [ 23.949855] do_syscall_64+0x3f/0x90 [ 23.950338] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.950990] [ 23.951204] Freed by task 212: [ 23.951600] kasan_save_stack+0x22/0x50 [ 23.952107] kasan_set_track+0x25/0x30 [ 23.952615] kasan_save_free_info+0x2b/0x50 [ 23.953158] __kasan_slab_free+0x10a/0x190 [ 23.953707] kmem_cache_free+0x10d/0x4d0 [ 23.954216] rcu_core+0x8c8/0x2860 [ 23.954665] __do_softirq+0x1b7/0x7d4 [ 23.955153] [ 23.955374] Last potentially related work creation: [ 23.955962] kasan_save_stack+0x22/0x50 [ 23.956471] __kasan_record_aux_stack+0x8e/0xa0 [ 23.957048] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.957716] remove_vma+0x139/0x170 [ 23.958179] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.958744] do_vmi_munmap+0x1f1/0x2b0 [ 23.959246] __vm_munmap+0x138/0x3a0 [ 23.959713] __x64_sys_munmap+0x59/0x80 [ 23.960210] do_syscall_64+0x3f/0x90 [ 23.960695] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.961333] [ 23.961549] Second to last potentially related work creation: [ 23.962235] kasan_save_stack+0x22/0x50 [ 23.962733] __kasan_record_aux_stack+0x8e/0xa0 [ 23.963319] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.963974] remove_vma+0x139/0x170 [ 23.964428] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.964978] do_vmi_munmap+0x1f1/0x2b0 [ 23.965458] mmap_region+0x1f9/0x2660 [ 23.965936] do_mmap+0x854/0xf00 [ 23.966375] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.966860] ksys_mmap_pgoff+0x3af/0x500 [ 23.967372] do_syscall_64+0x3f/0x90 [ 23.967853] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.968493] [ 23.968707] The buggy address belongs to the object at ffff88800e9249f8 [ 23.968707] which belongs to the cache vm_area_struct of size 168 [ 23.970167] The buggy address is located 88 bytes inside of [ 23.970167] freed 168-byte region [ffff88800e9249f8, ffff88800e924aa0) [ 23.971470] [ 23.971672] The buggy address belongs to the physical page: [ 23.972286] page:00000000fc1ded7b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe924 [ 23.973294] memcg:ffff88800e70a001 [ 23.973705] flags: 0x100000000000200(slab|node=0|zone=1) [ 23.974312] page_type: 0xffffffff() [ 23.974732] raw: 0100000000000200 ffff8880087a0c80 ffffea00003c6200 dead000000000008 [ 23.975582] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e70a001 [ 23.976428] page dumped because: kasan: bad access detected [ 23.977038] [ 23.977242] Memory state around the buggy address: [ 23.977796] ffff88800e924900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.978598] ffff88800e924980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 23.979392] >ffff88800e924a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.980183] ^ [ 23.980833] ffff88800e924a80: fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 [ 23.981629] ffff88800e924b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.982429] ================================================================== [ 23.983340] Disabling lock debugging due to kernel taint [ 25.982712] BUG: Bad rss-counter state mm:00000000ec6c7e95 type:MM_FILEPAGES val:33 [ 25.983718] BUG: Bad rss-counter state mm:00000000ec6c7e95 type:MM_ANONPAGES val:22 [ 26.499933] BUG: Bad rss-counter state mm:00000000692b0b77 type:MM_FILEPAGES val:33 [ 26.501087] BUG: Bad rss-counter state mm:00000000692b0b77 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:16373' (ECDSA) to the list of known hosts. 2023/06/21 07:48:20 fuzzer started 2023/06/21 07:48:20 dialing manager at localhost:36067 2023/06/21 07:48:20 checking machine... 2023/06/21 07:48:20 checking revisions... [ 27.252964] kmemleak: Automatic memory scanning thread ended 2023/06/21 07:48:21 testing simple program... [ 27.294408] cgroup: Unknown subsys name 'net' [ 27.340539] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:48:20 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffffffff813ad720 RCX=ffff8880094cf8c8 RDX=1ffff11001299f10 RSI=ffff8880094cf8c0 RDI=ffffffff813ad720 RBP=ffffffff813ad720 RSP=ffff8880094cf7d8 R8 =0000000000000001 R9 =ffff8880094cf868 R10=0000000000038001 R11=0000000000003c0d R12=0000000000000001 R13=0000000000000000 R14=ffff88800fde1b40 R15=0000000000092cc0 RIP=ffffffff811fc772 RFL=00000283 [--S---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 00007fd96f82a900 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=00007fd96fddf650 CR3=0000000019568000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffffffff0c2af75 RBX=0000000000000001 RCX=ffffffff86157bac RDX=dffffc0000000000 RSI=0000000000000000 RDI=0000000000000001 RBP=ffff88801581f678 RSP=ffff88801581f5b0 R8 =ffffffff86157bb0 R9 =ffff88801581f660 R10=0000000000038001 R11=0000000000025fc6 R12=ffff88801581f680 R13=ffff88801581f668 R14=ffff88801581f9b8 R15=ffff88801581f620 RIP=ffffffff81130b73 RFL=00000213 [----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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007ffa8bf4c900 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=00007ffa8b3caba0 CR3=000000000c5b2000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=dce6f3814a70db9c00000000000ae988 XMM05=9c75073b7a8817dd0000000000132ae8 XMM06=794cef1005944dd20000000000130db0 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000