syzkaller login: [ 28.734195] BUG: Bad rss-counter state mm:0000000048ceeadb type:MM_FILEPAGES val:33 [ 28.735483] BUG: Bad rss-counter state mm:0000000048ceeadb type:MM_ANONPAGES val:22 [ 28.832321] ================================================================== [ 28.833223] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.834146] Read of size 8 at addr ffff88800ed08968 by task sshd/219 [ 28.835063] [ 28.835282] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.836129] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.837101] Call Trace: [ 28.837415] [ 28.837695] dump_stack_lvl+0x91/0xf0 [ 28.838196] print_report+0xcc/0x620 [ 28.838672] ? __virt_addr_valid+0x102/0x340 [ 28.839236] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.839846] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.840461] kasan_report+0xbe/0xf0 [ 28.840926] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.841555] vma_interval_tree_remove+0xc75/0xec0 [ 28.842149] vma_prepare+0xc54/0x11a0 [ 28.842627] __split_vma+0x5af/0x950 [ 28.843104] ? __pfx___split_vma+0x10/0x10 [ 28.843629] ? find_held_lock+0x2c/0x110 [ 28.844146] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.844703] ? lock_is_held_type+0x9f/0x120 [ 28.845241] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.845855] ? mtree_range_walk+0x632/0x900 [ 28.846400] ? mas_walk+0x5c7/0x7c0 [ 28.846870] do_vmi_munmap+0x1f1/0x2b0 [ 28.847370] mmap_region+0x1f9/0x2660 [ 28.847848] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.848352] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.849073] ? __pfx_lock_acquire+0x10/0x10 [ 28.849599] ? __pfx_mmap_region+0x10/0x10 [ 28.850123] ? security_mmap_addr+0x7d/0xa0 [ 28.850646] ? get_unmapped_area+0x1f5/0x3f0 [ 28.851209] do_mmap+0x854/0xf00 [ 28.851650] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.852150] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.852708] ksys_mmap_pgoff+0x3af/0x500 [ 28.853219] do_syscall_64+0x3f/0x90 [ 28.853698] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.854335] RIP: 0033:0x7f7a800bed82 [ 28.854797] 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 [ 28.856921] RSP: 002b:00007fffaced7da8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.857819] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f7a800bed82 [ 28.858667] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f7a7f4f8000 [ 28.859520] RBP: 00007f7a7f4f8000 R08: 0000000000000009 R09: 0000000000001000 [ 28.860359] R10: 0000000000000812 R11: 0000000000000206 R12: 000055e5c9101f70 [ 28.861201] R13: 00007fffaced7dc0 R14: 00007fffaced7df0 R15: 00007fffaced8150 [ 28.862052] [ 28.862340] [ 28.862555] Allocated by task 211: [ 28.862989] kasan_save_stack+0x22/0x50 [ 28.863488] kasan_set_track+0x25/0x30 [ 28.863975] __kasan_slab_alloc+0x59/0x70 [ 28.864499] kmem_cache_alloc+0x16b/0x370 [ 28.865011] vm_area_dup+0x20/0x160 [ 28.865466] __split_vma+0x170/0x950 [ 28.865924] split_vma+0xc6/0x110 [ 28.866358] mprotect_fixup+0x8d2/0xb30 [ 28.866857] do_mprotect_pkey+0x87e/0xd40 [ 28.867395] __x64_sys_mprotect+0x78/0xc0 [ 28.867913] do_syscall_64+0x3f/0x90 [ 28.868379] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.869014] [ 28.869226] Freed by task 211: [ 28.869618] kasan_save_stack+0x22/0x50 [ 28.870115] kasan_set_track+0x25/0x30 [ 28.870609] kasan_save_free_info+0x2b/0x50 [ 28.871140] __kasan_slab_free+0x10a/0x190 [ 28.871664] kmem_cache_free+0x10d/0x4d0 [ 28.872166] rcu_core+0x8c8/0x2860 [ 28.872602] __do_softirq+0x1b7/0x7d4 [ 28.873086] [ 28.873298] Last potentially related work creation: [ 28.873878] kasan_save_stack+0x22/0x50 [ 28.874372] __kasan_record_aux_stack+0x8e/0xa0 [ 28.874941] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.875574] remove_vma+0x139/0x170 [ 28.876090] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.876645] do_vmi_munmap+0x1f1/0x2b0 [ 28.877126] __vm_munmap+0x138/0x3a0 [ 28.877595] __x64_sys_munmap+0x59/0x80 [ 28.878086] do_syscall_64+0x3f/0x90 [ 28.878556] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.879207] [ 28.879423] The buggy address belongs to the object at ffff88800ed08910 [ 28.879423] which belongs to the cache vm_area_struct of size 168 [ 28.880879] The buggy address is located 88 bytes inside of [ 28.880879] freed 168-byte region [ffff88800ed08910, ffff88800ed089b8) [ 28.882277] [ 28.882493] The buggy address belongs to the physical page: [ 28.883174] page:000000006cf267e4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xed08 [ 28.884269] memcg:ffff88801a7b5f01 [ 28.884690] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.885328] page_type: 0xffffffff() [ 28.885777] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 28.886701] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a7b5f01 [ 28.887635] page dumped because: kasan: bad access detected [ 28.888287] [ 28.888501] Memory state around the buggy address: [ 28.889068] ffff88800ed08800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 28.889914] ffff88800ed08880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 28.890754] >ffff88800ed08900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.891621] ^ [ 28.892394] ffff88800ed08980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 28.893244] ffff88800ed08a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.894084] ================================================================== [ 28.895004] Disabling lock debugging due to kernel taint [ 31.510380] BUG: Bad rss-counter state mm:0000000062309cf7 type:MM_FILEPAGES val:33 [ 31.511734] BUG: Bad rss-counter state mm:0000000062309cf7 type:MM_ANONPAGES val:22 [ 31.968899] BUG: Bad rss-counter state mm:00000000839bfe37 type:MM_FILEPAGES val:33 [ 31.970213] BUG: Bad rss-counter state mm:00000000839bfe37 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:30143' (ECDSA) to the list of known hosts. 2023/06/20 13:54:54 fuzzer started 2023/06/20 13:54:54 dialing manager at localhost:36067 2023/06/20 13:54:54 checking machine... 2023/06/20 13:54:54 checking revisions... [ 32.587019] kmemleak: Automatic memory scanning thread ended 2023/06/20 13:54:55 testing simple program... [ 32.629695] cgroup: Unknown subsys name 'net' [ 32.667159] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 13:54:54 Registers: info registers vcpu 0 RAX=0000000000000003 RBX=ffff88801a64ad80 RCX=0000000000000000 RDX=ffffffff81eeadb0 RSI=ffff88801a64ad80 RDI=ffff888008441500 RBP=ffff8880165178b0 RSP=ffff888016517878 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3d357 R11=00000000000b6a61 R12=ffff888008441500 R13=ffffea0000699280 R14=ffffffff81eeadb0 R15=1ffff11002ca2f1d RIP=ffffffff8180c954 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 00007f229c2e6700 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=00007fc001fe30b0 CR3=000000000e846000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3832325b646873732034353a3435 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363739 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 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=00007fae8a908ca0 CR3=000000000d600000 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=5f1fd9a7e5921bb1024267c7309e27a6 XMM02=000000000011d368ec2efd57dc4c00df XMM03=00000000001212e0bc89d4fc7b186a4b XMM04=8b4767618c3d181500000000000ae988 XMM05=dfcdbad4f1609c370000000000131878 XMM06=806171799158d9670000000000131700 XMM07=e042d86d42eb936e00000000001215b8 XMM08=bc89d4fc7b186a4b000000000011d3c8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000