syzkaller login: [ 31.131221] BUG: Bad rss-counter state mm:00000000f3cdb352 type:MM_FILEPAGES val:33 [ 31.132423] BUG: Bad rss-counter state mm:00000000f3cdb352 type:MM_ANONPAGES val:22 [ 31.172005] ================================================================== [ 31.173085] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.174112] Read of size 8 at addr ffff88800e1a6228 by task sshd/221 [ 31.174982] [ 31.175228] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.176248] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.177269] Call Trace: [ 31.177698] [ 31.177987] dump_stack_lvl+0x91/0xf0 [ 31.178486] print_report+0xcc/0x620 [ 31.179002] ? __virt_addr_valid+0x102/0x340 [ 31.179562] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.180189] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.180810] kasan_report+0xbe/0xf0 [ 31.181281] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.181896] vma_interval_tree_remove+0xc75/0xec0 [ 31.182503] vma_prepare+0xc54/0x11a0 [ 31.182995] __split_vma+0x5af/0x950 [ 31.183462] ? __pfx___split_vma+0x10/0x10 [ 31.183994] ? find_held_lock+0x2c/0x110 [ 31.184518] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.185084] ? lock_is_held_type+0x9f/0x120 [ 31.185624] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.186230] ? mtree_range_walk+0x632/0x900 [ 31.186785] ? mas_walk+0x5c7/0x7c0 [ 31.187262] do_vmi_munmap+0x1f1/0x2b0 [ 31.187750] mmap_region+0x1f9/0x2660 [ 31.188228] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.188740] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.189449] ? __pfx_lock_acquire+0x10/0x10 [ 31.189983] ? __pfx_mmap_region+0x10/0x10 [ 31.190519] ? security_mmap_addr+0x7d/0xa0 [ 31.191060] ? get_unmapped_area+0x1f5/0x3f0 [ 31.191609] do_mmap+0x854/0xf00 [ 31.192048] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.192541] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.193102] ksys_mmap_pgoff+0x3af/0x500 [ 31.193605] do_syscall_64+0x3f/0x90 [ 31.194081] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.194736] RIP: 0033:0x7f8e00837d82 [ 31.195205] 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 [ 31.197318] RSP: 002b:00007fff541270a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.198215] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8e00837d82 [ 31.199088] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8dffc71000 [ 31.200127] RBP: 00007f8dffc71000 R08: 0000000000000009 R09: 0000000000001000 [ 31.200976] R10: 0000000000000812 R11: 0000000000000206 R12: 0000560da6dd0f70 [ 31.201822] R13: 00007fff541270c0 R14: 00007fff541270f0 R15: 00007fff54127450 [ 31.202680] [ 31.202989] [ 31.203210] Allocated by task 214: [ 31.203635] kasan_save_stack+0x22/0x50 [ 31.204139] kasan_set_track+0x25/0x30 [ 31.204634] __kasan_slab_alloc+0x59/0x70 [ 31.205159] kmem_cache_alloc+0x16b/0x370 [ 31.205678] vm_area_dup+0x20/0x160 [ 31.206134] __split_vma+0x170/0x950 [ 31.206603] split_vma+0xc6/0x110 [ 31.207050] mprotect_fixup+0x8d2/0xb30 [ 31.207548] do_mprotect_pkey+0x87e/0xd40 [ 31.208079] __x64_sys_mprotect+0x78/0xc0 [ 31.208601] do_syscall_64+0x3f/0x90 [ 31.209086] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.209734] [ 31.209948] Freed by task 13: [ 31.210329] kasan_save_stack+0x22/0x50 [ 31.210857] kasan_set_track+0x25/0x30 [ 31.211355] kasan_save_free_info+0x2b/0x50 [ 31.211889] __kasan_slab_free+0x10a/0x190 [ 31.212428] kmem_cache_free+0x10d/0x4d0 [ 31.212930] rcu_core+0x8c8/0x2860 [ 31.213370] __do_softirq+0x1b7/0x7d4 [ 31.213855] [ 31.214071] Last potentially related work creation: [ 31.214649] kasan_save_stack+0x22/0x50 [ 31.215167] __kasan_record_aux_stack+0x8e/0xa0 [ 31.215736] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.216380] remove_vma+0x139/0x170 [ 31.216831] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.217385] do_vmi_munmap+0x1f1/0x2b0 [ 31.217864] __vm_munmap+0x138/0x3a0 [ 31.218326] __x64_sys_munmap+0x59/0x80 [ 31.218838] do_syscall_64+0x3f/0x90 [ 31.219312] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.219957] [ 31.220171] The buggy address belongs to the object at ffff88800e1a61d0 [ 31.220171] which belongs to the cache vm_area_struct of size 168 [ 31.221639] The buggy address is located 88 bytes inside of [ 31.221639] freed 168-byte region [ffff88800e1a61d0, ffff88800e1a6278) [ 31.223065] [ 31.223285] The buggy address belongs to the physical page: [ 31.223933] page:00000000f47ac9b5 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe1a6 [ 31.225010] memcg:ffff88801477d401 [ 31.225439] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.226079] page_type: 0xffffffff() [ 31.226529] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 31.227471] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801477d401 [ 31.228370] page dumped because: kasan: bad access detected [ 31.229031] [ 31.229248] Memory state around the buggy address: [ 31.229830] ffff88800e1a6100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.230683] ffff88800e1a6180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 31.231571] >ffff88800e1a6200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 31.232432] ^ [ 31.233005] ffff88800e1a6280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 31.233889] ffff88800e1a6300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 31.234756] ================================================================== [ 31.235790] Disabling lock debugging due to kernel taint [ 34.091231] BUG: Bad rss-counter state mm:00000000141dfc48 type:MM_FILEPAGES val:33 [ 34.092278] BUG: Bad rss-counter state mm:00000000141dfc48 type:MM_ANONPAGES val:22 [ 34.549461] BUG: Bad rss-counter state mm:00000000d42aa8b7 type:MM_FILEPAGES val:33 [ 34.550516] BUG: Bad rss-counter state mm:00000000d42aa8b7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7451' (ECDSA) to the list of known hosts. 2023/06/21 01:29:56 fuzzer started 2023/06/21 01:29:56 dialing manager at localhost:36067 2023/06/21 01:29:56 checking machine... 2023/06/21 01:29:56 checking revisions... [ 35.263668] kmemleak: Automatic memory scanning thread ended 2023/06/21 01:29:56 testing simple program... [ 35.318599] cgroup: Unknown subsys name 'net' [ 35.367579] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:29:56 Registers: info registers vcpu 0 RAX=1ffff11001b1d98f RBX=ffff88800d8ecc48 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88800d8ecc78 RBP=ffff888016b9c000 RSP=ffff8880158e7a98 R8 =0000000000000001 R9 =ffffed1002b1cf47 R10=0000000000000003 R11=00000000000b6a61 R12=dffffc0000000000 R13=ffff8880167f8dc0 R14=ffffffff8366b8df R15=0000000000000000 RIP=ffffffff818464ec RFL=00000046 [---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 00007ff7fb6e4900 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=00007ffe09a4b000 CR3=000000000f25e000 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=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=00007f17b9d3cd30 CR3=000000000ca8c000 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=56cfec9ff9ad6893aa48f7b16162d588 XMM02=000000000011b938eff9b2d0a8fce9cb XMM03=000000000011ba082c67c8bc2e329bc3 XMM04=90032169d55bd0c000000000000ae988 XMM05=e4cb8bb95a7664b60000000000132920 XMM06=4bb3b3898d281b750000000000131788 XMM07=e042d86d42eb936e0000000000123540 XMM08=e504c7569aad28bd000000000011ba08 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000