syzkaller login: [ 38.799506] BUG: Bad rss-counter state mm:00000000b1287ff1 type:MM_FILEPAGES val:33 [ 38.800699] BUG: Bad rss-counter state mm:00000000b1287ff1 type:MM_ANONPAGES val:22 [ 38.835995] ================================================================== [ 38.837110] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.838183] Read of size 8 at addr ffff88800c52ba50 by task sshd/218 [ 38.839114] [ 38.839332] CPU: 1 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.840280] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.841479] Call Trace: [ 38.841808] [ 38.842103] dump_stack_lvl+0x91/0xf0 [ 38.842615] print_report+0xcc/0x620 [ 38.843099] ? __virt_addr_valid+0x102/0x340 [ 38.843654] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.844272] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.844893] kasan_report+0xbe/0xf0 [ 38.845371] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.846005] vma_interval_tree_remove+0xc75/0xec0 [ 38.846645] vma_prepare+0xc54/0x11a0 [ 38.847127] __split_vma+0x5af/0x950 [ 38.847623] ? __pfx___split_vma+0x10/0x10 [ 38.848181] ? find_held_lock+0x2c/0x110 [ 38.848719] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.849305] ? lock_is_held_type+0x9f/0x120 [ 38.849850] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.850474] ? mtree_range_walk+0x632/0x900 [ 38.851042] ? mas_walk+0x5c7/0x7c0 [ 38.851540] do_vmi_munmap+0x1f1/0x2b0 [ 38.852043] mmap_region+0x1f9/0x2660 [ 38.852535] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.853055] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.853776] ? __pfx_lock_acquire+0x10/0x10 [ 38.854327] ? __pfx_mmap_region+0x10/0x10 [ 38.854884] ? security_mmap_addr+0x7d/0xa0 [ 38.855429] ? get_unmapped_area+0x1f5/0x3f0 [ 38.855992] do_mmap+0x854/0xf00 [ 38.856442] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.856945] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.857511] ksys_mmap_pgoff+0x3af/0x500 [ 38.858033] do_syscall_64+0x3f/0x90 [ 38.858522] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.859185] RIP: 0033:0x7ff3240a0d82 [ 38.859645] 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 [ 38.861818] RSP: 002b:00007ffdd2852848 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.862753] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007ff3240a0d82 [ 38.863703] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007ff3234da000 [ 38.864680] RBP: 00007ff3234da000 R08: 0000000000000009 R09: 0000000000001000 [ 38.865565] R10: 0000000000000812 R11: 0000000000000206 R12: 0000560270fb6f60 [ 38.866608] R13: 00007ffdd2852860 R14: 00007ffdd2852890 R15: 00007ffdd2852bf0 [ 38.867672] [ 38.868035] [ 38.868298] Allocated by task 211: [ 38.868826] kasan_save_stack+0x22/0x50 [ 38.869466] kasan_set_track+0x25/0x30 [ 38.870086] __kasan_slab_alloc+0x59/0x70 [ 38.870771] kmem_cache_alloc+0x16b/0x370 [ 38.871399] vm_area_dup+0x20/0x160 [ 38.871966] __split_vma+0x170/0x950 [ 38.872533] split_vma+0xc6/0x110 [ 38.873081] mprotect_fixup+0x8d2/0xb30 [ 38.873702] do_mprotect_pkey+0x87e/0xd40 [ 38.874346] __x64_sys_mprotect+0x78/0xc0 [ 38.874999] do_syscall_64+0x3f/0x90 [ 38.875589] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.876393] [ 38.876663] Freed by task 211: [ 38.877153] kasan_save_stack+0x22/0x50 [ 38.877776] kasan_set_track+0x25/0x30 [ 38.878391] kasan_save_free_info+0x2b/0x50 [ 38.879055] __kasan_slab_free+0x10a/0x190 [ 38.879713] kmem_cache_free+0x10d/0x4d0 [ 38.880348] rcu_core+0x8c8/0x2860 [ 38.880898] __do_softirq+0x1b7/0x7d4 [ 38.881485] [ 38.881756] Last potentially related work creation: [ 38.882505] kasan_save_stack+0x22/0x50 [ 38.883126] __kasan_record_aux_stack+0x8e/0xa0 [ 38.883706] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.884351] remove_vma+0x139/0x170 [ 38.884811] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.885365] do_vmi_munmap+0x1f1/0x2b0 [ 38.885850] __vm_munmap+0x138/0x3a0 [ 38.886318] __x64_sys_munmap+0x59/0x80 [ 38.886823] do_syscall_64+0x3f/0x90 [ 38.887303] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.887945] [ 38.888164] The buggy address belongs to the object at ffff88800c52b9f8 [ 38.888164] which belongs to the cache vm_area_struct of size 168 [ 38.889627] The buggy address is located 88 bytes inside of [ 38.889627] freed 168-byte region [ffff88800c52b9f8, ffff88800c52baa0) [ 38.891034] [ 38.891255] The buggy address belongs to the physical page: [ 38.891914] page:000000005725f939 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xc52b [ 38.892991] memcg:ffff88800e77f001 [ 38.893420] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.894120] page_type: 0xffffffff() [ 38.894591] raw: 0100000000000200 ffff8880087a0c80 ffffea00003c60c0 dead000000000005 [ 38.895523] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e77f001 [ 38.896438] page dumped because: kasan: bad access detected [ 38.897107] [ 38.897329] Memory state around the buggy address: [ 38.897908] ffff88800c52b900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.898766] ffff88800c52b980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 38.899621] >ffff88800c52ba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.900477] ^ [ 38.901173] ffff88800c52ba80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 38.902033] ffff88800c52bb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.902905] ================================================================== [ 38.903957] Disabling lock debugging due to kernel taint [ 41.745837] BUG: Bad rss-counter state mm:000000008370ca46 type:MM_FILEPAGES val:33 [ 41.747001] BUG: Bad rss-counter state mm:000000008370ca46 type:MM_ANONPAGES val:22 [ 42.187917] BUG: Bad rss-counter state mm:0000000057e9cdac type:MM_FILEPAGES val:33 [ 42.189082] BUG: Bad rss-counter state mm:0000000057e9cdac type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:9929' (ECDSA) to the list of known hosts. 2023/06/20 20:25:34 fuzzer started 2023/06/20 20:25:34 dialing manager at localhost:36067 2023/06/20 20:25:34 checking machine... 2023/06/20 20:25:34 checking revisions... [ 42.888657] kmemleak: Automatic memory scanning thread ended 2023/06/20 20:25:34 testing simple program... [ 42.932175] cgroup: Unknown subsys name 'net' [ 42.986084] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 20:25:34 Registers: info registers vcpu 0 RAX=ffffffff863b3051 RBX=0000000000000001 RCX=ffffffff863b3050 RDX=0000000000000000 RSI=0000000000000000 RDI=0000000000000001 RBP=ffff88800e98f4b0 RSP=ffff88800e98f3e8 R8 =ffffffff863b3054 R9 =ffff88800e98f498 R10=0000000000038001 R11=000000000008a88c R12=ffff88800e98f4b8 R13=ffff88800e98f4a0 R14=ffff88800e98fce0 R15=ffff88800e98f458 RIP=ffffffff81130b99 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 00007f861e3e7900 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=00007ffe1df8f000 CR3=000000000c4e8000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf39670 RBX=ffff8880068e75f0 RCX=000000000000006c RDX=0000000000039500 RSI=0000000000039500 RDI=ffff88806cf39670 RBP=0000000000000001 RSP=ffff8880068e7420 R8 =dffffc0000000000 R9 =0000000000000000 R10=ffff888008dcc180 R11=0000000000000000 R12=ffff88806cf39500 R13=0000000000000001 R14=ffff88806cf39500 R15=ffff88806cf00000 RIP=ffffffff81269f82 RFL=00000006 [-----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 00007f440d99a900 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=00007f440cd89f30 CR3=000000000cd38000 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=478bc7d372e9368b224115b6d187bda1 XMM02=000000000011bd00eff9b2d0a8fce9cb XMM03=000000000011bdd02c67c8bc2e329bc3 XMM04=f83121c75b457a9c00000000000ae988 XMM05=a6303d78a3069f1e0000000000132cf0 XMM06=bdf2e299e47b49d50000000000131a20 XMM07=e042d86d42eb936e0000000000122250 XMM08=d8aba73b2803ce26000000000011bdd0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000