[ 44.202300] BUG: Bad rss-counter state mm:00000000b25a6453 type:MM_FILEPAGES val:33 [ 44.203614] BUG: Bad rss-counter state mm:00000000b25a6453 type:MM_ANONPAGES val:22 [ 44.365018] ================================================================== [ 44.365975] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 44.366942] Read of size 8 at addr ffff88800c7e45c8 by task sshd/219 [ 44.367742] [ 44.367965] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 44.368942] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 44.369994] Call Trace: [ 44.370343] [ 44.370645] dump_stack_lvl+0x91/0xf0 [ 44.371155] print_report+0xcc/0x620 [ 44.371654] ? __virt_addr_valid+0x102/0x340 [ 44.372230] ? vma_interval_tree_remove+0xc75/0xec0 [ 44.372867] ? vma_interval_tree_remove+0xc75/0xec0 [ 44.373509] kasan_report+0xbe/0xf0 [ 44.374008] ? vma_interval_tree_remove+0xc75/0xec0 [ 44.374651] vma_interval_tree_remove+0xc75/0xec0 [ 44.375278] vma_prepare+0xc54/0x11a0 [ 44.375771] __split_vma+0x5af/0x950 [ 44.376269] ? __pfx___split_vma+0x10/0x10 [ 44.376813] ? find_held_lock+0x2c/0x110 [ 44.377353] do_vmi_align_munmap+0x2ba/0x11f0 [ 44.377961] ? lock_is_held_type+0x9f/0x120 [ 44.378524] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 44.379157] ? mtree_range_walk+0x632/0x900 [ 44.379735] ? mas_walk+0x5c7/0x7c0 [ 44.380225] do_vmi_munmap+0x1f1/0x2b0 [ 44.380734] mmap_region+0x1f9/0x2660 [ 44.381235] ? vm_mmap_pgoff+0x15c/0x3a0 [ 44.381789] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 44.382537] ? __pfx_lock_acquire+0x10/0x10 [ 44.383092] ? __pfx_mmap_region+0x10/0x10 [ 44.383650] ? security_mmap_addr+0x7d/0xa0 [ 44.384210] ? get_unmapped_area+0x1f5/0x3f0 [ 44.384785] do_mmap+0x854/0xf00 [ 44.385241] vm_mmap_pgoff+0x1a6/0x3a0 [ 44.385774] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 44.386363] ksys_mmap_pgoff+0x3af/0x500 [ 44.386889] do_syscall_64+0x3f/0x90 [ 44.387393] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 44.388068] RIP: 0033:0x7fc45597ad82 [ 44.388547] 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 [ 44.390801] RSP: 002b:00007ffe93f98578 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 44.391738] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc45597ad82 [ 44.392631] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc454db4000 [ 44.393516] RBP: 00007fc454db4000 R08: 0000000000000009 R09: 0000000000001000 [ 44.394420] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564ee8dd5f70 [ 44.395302] R13: 00007ffe93f98590 R14: 00007ffe93f985c0 R15: 00007ffe93f98920 [ 44.396191] [ 44.396494] [ 44.396716] Allocated by task 212: [ 44.397163] kasan_save_stack+0x22/0x50 [ 44.397686] kasan_set_track+0x25/0x30 [ 44.398192] __kasan_slab_alloc+0x59/0x70 [ 44.398725] kmem_cache_alloc+0x16b/0x370 [ 44.399243] vm_area_dup+0x20/0x160 [ 44.399709] __split_vma+0x170/0x950 [ 44.400184] split_vma+0xc6/0x110 [ 44.400626] mprotect_fixup+0x8d2/0xb30 [ 44.401139] do_mprotect_pkey+0x87e/0xd40 [ 44.401673] __x64_sys_mprotect+0x78/0xc0 [ 44.402209] do_syscall_64+0x3f/0x90 [ 44.402690] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 44.403347] [ 44.403565] Freed by task 212: [ 44.403964] kasan_save_stack+0x22/0x50 [ 44.404476] kasan_set_track+0x25/0x30 [ 44.404986] kasan_save_free_info+0x2b/0x50 [ 44.405521] __kasan_slab_free+0x10a/0x190 [ 44.406068] kmem_cache_free+0x10d/0x4d0 [ 44.406589] rcu_core+0x8c8/0x2860 [ 44.407043] __do_softirq+0x1b7/0x7d4 [ 44.407528] [ 44.407748] Last potentially related work creation: [ 44.408347] kasan_save_stack+0x22/0x50 [ 44.408858] __kasan_record_aux_stack+0x8e/0xa0 [ 44.409447] __call_rcu_common.constprop.0+0x6a/0xb90 [ 44.410118] remove_vma+0x139/0x170 [ 44.410571] do_vmi_align_munmap+0xd4a/0x11f0 [ 44.411144] do_vmi_munmap+0x1f1/0x2b0 [ 44.411631] __vm_munmap+0x138/0x3a0 [ 44.412113] __x64_sys_munmap+0x59/0x80 [ 44.412625] do_syscall_64+0x3f/0x90 [ 44.413095] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 44.413754] [ 44.413973] The buggy address belongs to the object at ffff88800c7e4570 [ 44.413973] which belongs to the cache vm_area_struct of size 168 [ 44.415466] The buggy address is located 88 bytes inside of [ 44.415466] freed 168-byte region [ffff88800c7e4570, ffff88800c7e4618) [ 44.416905] [ 44.417122] The buggy address belongs to the physical page: [ 44.417816] page:00000000f3e864ee refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc7e4 [ 44.418900] memcg:ffff88801587aa01 [ 44.419325] flags: 0x100000000000200(slab|node=0|zone=1) [ 44.419976] page_type: 0xffffffff() [ 44.420434] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 44.421366] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801587aa01 [ 44.422289] page dumped because: kasan: bad access detected [ 44.422948] [ 44.423163] Memory state around the buggy address: [ 44.423751] ffff88800c7e4480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 44.424618] ffff88800c7e4500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 44.425479] >ffff88800c7e4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 44.426353] ^ [ 44.427025] ffff88800c7e4600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 44.427898] ffff88800c7e4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 44.428752] ================================================================== [ 44.429882] Disabling lock debugging due to kernel taint [ 46.171444] BUG: Bad rss-counter state mm:000000001ff7737a type:MM_FILEPAGES val:33 [ 46.172203] BUG: Bad rss-counter state mm:000000001ff7737a type:MM_ANONPAGES val:22 [ 46.679199] BUG: Bad rss-counter state mm:00000000799d7666 type:MM_FILEPAGES val:33 [ 46.680385] BUG: Bad rss-counter state mm:00000000799d7666 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:22159' (ECDSA) to the list of known hosts. 2023/06/20 01:46:00 fuzzer started 2023/06/20 01:46:00 dialing manager at localhost:44161 2023/06/20 01:46:00 checking machine... 2023/06/20 01:46:00 checking revisions... [ 47.342127] kmemleak: Automatic memory scanning thread ended 2023/06/20 01:46:00 testing simple program... [ 47.390920] cgroup: Unknown subsys name 'net' [ 47.427489] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:45:44 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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 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=000056375f325768 CR3=0000000005482000 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=00007f2536c6a51000005556173fb790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffffffff813ad420 RCX=ffff88800f9cf540 RDX=1ffff11001f39e94 RSI=ffffffff813ad6d0 RDI=ffff88800f9cf4a0 RBP=ffff88800f9cf538 RSP=ffff88800f9cf478 R8 =0000000000000001 R9 =ffff88800f9cf4e0 R10=0000000000038001 R11=0000000000003c0d R12=ffff88800f9cf568 R13=0000000000000000 R14=ffff88801423d1c0 R15=ffff88800f9cf4a0 RIP=ffffffff811305f0 RFL=00000212 [----A--] 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 00007f29b27b7700 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=00007f954fc9f650 CR3=000000000fc76000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3832325b646873732039353a3534 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383234 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000