[ 31.039411] BUG: Bad rss-counter state mm:00000000311805dc type:MM_FILEPAGES val:33 [ 31.040913] BUG: Bad rss-counter state mm:00000000311805dc type:MM_ANONPAGES val:22 [ 31.164406] ================================================================== [ 31.165467] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.166578] Read of size 8 at addr ffff88800da145c8 by task sshd/225 [ 31.167482] [ 31.167742] CPU: 1 PID: 225 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.168885] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.170047] Call Trace: [ 31.170471] [ 31.170813] dump_stack_lvl+0x91/0xf0 [ 31.171395] print_report+0xcc/0x620 [ 31.171969] ? __virt_addr_valid+0x102/0x340 [ 31.172630] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.173354] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.174115] kasan_report+0xbe/0xf0 [ 31.174659] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.175191] vma_interval_tree_remove+0xc75/0xec0 [ 31.175707] vma_prepare+0xc54/0x11a0 [ 31.176120] __split_vma+0x5af/0x950 [ 31.176526] ? __pfx___split_vma+0x10/0x10 [ 31.176983] ? find_held_lock+0x2c/0x110 [ 31.177436] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.177929] ? lock_is_held_type+0x9f/0x120 [ 31.178419] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.178946] ? mtree_range_walk+0x632/0x900 [ 31.179426] ? mas_walk+0x5c7/0x7c0 [ 31.179843] do_vmi_munmap+0x1f1/0x2b0 [ 31.180273] mmap_region+0x1f9/0x2660 [ 31.180691] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.181137] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.181762] ? __pfx_lock_acquire+0x10/0x10 [ 31.182232] ? __pfx_mmap_region+0x10/0x10 [ 31.182687] ? security_mmap_addr+0x7d/0xa0 [ 31.183149] ? get_unmapped_area+0x1f5/0x3f0 [ 31.183625] do_mmap+0x854/0xf00 [ 31.184007] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.184438] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.184929] ksys_mmap_pgoff+0x3af/0x500 [ 31.185372] do_syscall_64+0x3f/0x90 [ 31.185785] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.186366] RIP: 0033:0x7febb1265d82 [ 31.186758] 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 [ 31.188586] RSP: 002b:00007ffc32990488 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.189371] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007febb1265d82 [ 31.190099] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007febb069f000 [ 31.190851] RBP: 00007febb069f000 R08: 0000000000000009 R09: 0000000000001000 [ 31.191588] R10: 0000000000000812 R11: 0000000000000206 R12: 000056099de21b20 [ 31.192322] R13: 00007ffc329904a0 R14: 00007ffc329904d0 R15: 00007ffc32990830 [ 31.193071] [ 31.193319] [ 31.193503] Allocated by task 210: [ 31.193873] kasan_save_stack+0x22/0x50 [ 31.194324] kasan_set_track+0x25/0x30 [ 31.194757] __kasan_slab_alloc+0x59/0x70 [ 31.195212] kmem_cache_alloc+0x16b/0x370 [ 31.195661] vm_area_dup+0x20/0x160 [ 31.196052] __split_vma+0x170/0x950 [ 31.196454] split_vma+0xc6/0x110 [ 31.196837] mprotect_fixup+0x8d2/0xb30 [ 31.197269] do_mprotect_pkey+0x87e/0xd40 [ 31.197716] __x64_sys_mprotect+0x78/0xc0 [ 31.198162] do_syscall_64+0x3f/0x90 [ 31.198578] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.199129] [ 31.199309] Freed by task 202: [ 31.199645] kasan_save_stack+0x22/0x50 [ 31.200083] kasan_set_track+0x25/0x30 [ 31.200508] kasan_save_free_info+0x2b/0x50 [ 31.200965] __kasan_slab_free+0x10a/0x190 [ 31.201424] kmem_cache_free+0x10d/0x4d0 [ 31.201863] rcu_core+0x8c8/0x2860 [ 31.202259] __do_softirq+0x1b7/0x7d4 [ 31.202665] [ 31.202851] Last potentially related work creation: [ 31.203349] kasan_save_stack+0x22/0x50 [ 31.203784] __kasan_record_aux_stack+0x8e/0xa0 [ 31.204271] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.204826] remove_vma+0x139/0x170 [ 31.205213] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.205695] do_vmi_munmap+0x1f1/0x2b0 [ 31.206111] __vm_munmap+0x138/0x3a0 [ 31.206517] __x64_sys_munmap+0x59/0x80 [ 31.206938] do_syscall_64+0x3f/0x90 [ 31.207349] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.207904] [ 31.208084] Second to last potentially related work creation: [ 31.208672] kasan_save_stack+0x22/0x50 [ 31.209110] __kasan_record_aux_stack+0x8e/0xa0 [ 31.209689] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.210256] remove_vma+0x139/0x170 [ 31.210647] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.211125] do_vmi_munmap+0x1f1/0x2b0 [ 31.211537] mmap_region+0x1f9/0x2660 [ 31.211946] do_mmap+0x854/0xf00 [ 31.212320] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.212735] ksys_mmap_pgoff+0x7d/0x500 [ 31.213153] do_syscall_64+0x3f/0x90 [ 31.213555] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.214109] [ 31.214306] The buggy address belongs to the object at ffff88800da14570 [ 31.214306] which belongs to the cache vm_area_struct of size 168 [ 31.215566] The buggy address is located 88 bytes inside of [ 31.215566] freed 168-byte region [ffff88800da14570, ffff88800da14618) [ 31.216763] [ 31.216945] The buggy address belongs to the physical page: [ 31.217510] page:00000000ecbef5c9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xda14 [ 31.218448] memcg:ffff8880097efa01 [ 31.218809] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 31.219408] page_type: 0xffffffff() [ 31.219799] raw: 0100000000000200 ffff8880087a0c80 ffffea000038b1c0 dead000000000007 [ 31.220587] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880097efa01 [ 31.221359] page dumped because: kasan: bad access detected [ 31.221928] [ 31.222110] Memory state around the buggy address: [ 31.222616] ffff88800da14480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.223346] ffff88800da14500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 31.224067] >ffff88800da14580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.224796] ^ [ 31.225363] ffff88800da14600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 31.226085] ffff88800da14680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.226803] ================================================================== [ 31.227641] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.176179] BUG: Bad rss-counter state mm:00000000ef76aeec type:MM_FILEPAGES val:33 [ 33.177584] BUG: Bad rss-counter state mm:00000000ef76aeec type:MM_ANONPAGES val:22 [ 33.635885] BUG: Bad rss-counter state mm:00000000c1c7492a type:MM_FILEPAGES val:33 [ 33.637041] BUG: Bad rss-counter state mm:00000000c1c7492a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:31861' (ECDSA) to the list of known hosts. 2023/06/20 23:13:42 fuzzer started 2023/06/20 23:13:42 dialing manager at localhost:36067 2023/06/20 23:13:42 checking machine... 2023/06/20 23:13:42 checking revisions... [ 34.284560] kmemleak: Automatic memory scanning thread ended 2023/06/20 23:13:42 testing simple program... [ 34.332330] cgroup: Unknown subsys name 'net' [ 34.371310] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 23:13:41 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff88801597b680 RSI=ffffffff81f31a62 RDI=ffff88800e14fc50 RBP=0000000000000000 RSP=ffff88800e14fa60 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000000 R12=ffff88800e14fc50 R13=0000000000000000 R14=ffff88800f58c808 R15=dffffc0000000000 RIP=ffffffff814c0864 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 00007f0828e92900 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=00007f0829447650 CR3=0000000008ed6000 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=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 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=000055c20de7a3c8 CR3=0000000019b94000 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=33313a3332203032206e754a3e38333c XMM01=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3433325b646873732031343a3331 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320323936 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000