syzkaller login: [ 61.773070] BUG: Bad rss-counter state mm:00000000d8f462b2 type:MM_FILEPAGES val:33 [ 61.774019] BUG: Bad rss-counter state mm:00000000d8f462b2 type:MM_ANONPAGES val:22 [ 61.894450] ================================================================== [ 61.895176] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 61.895907] Read of size 8 at addr ffff88800da72228 by task sshd/219 [ 61.896499] [ 61.896667] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 61.897332] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 61.898180] Call Trace: [ 61.898430] [ 61.898648] dump_stack_lvl+0x91/0xf0 [ 61.899027] print_report+0xcc/0x620 [ 61.899397] ? __virt_addr_valid+0x102/0x340 [ 61.899818] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.900306] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.900770] kasan_report+0xbe/0xf0 [ 61.901081] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.901486] vma_interval_tree_remove+0xc75/0xec0 [ 61.901896] vma_prepare+0xc54/0x11a0 [ 61.902215] __split_vma+0x5af/0x950 [ 61.902529] ? __pfx___split_vma+0x10/0x10 [ 61.902877] ? find_held_lock+0x2c/0x110 [ 61.903210] do_vmi_align_munmap+0x2ba/0x11f0 [ 61.903590] ? lock_is_held_type+0x9f/0x120 [ 61.903938] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 61.904329] ? mtree_range_walk+0x632/0x900 [ 61.904684] ? mas_walk+0x5c7/0x7c0 [ 61.904987] do_vmi_munmap+0x1f1/0x2b0 [ 61.905303] mmap_region+0x1f9/0x2660 [ 61.905616] ? vm_mmap_pgoff+0x15c/0x3a0 [ 61.905960] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 61.906421] ? __pfx_lock_acquire+0x10/0x10 [ 61.906763] ? __pfx_mmap_region+0x10/0x10 [ 61.907106] ? security_mmap_addr+0x7d/0xa0 [ 61.907449] ? get_unmapped_area+0x1f5/0x3f0 [ 61.907802] do_mmap+0x854/0xf00 [ 61.908086] vm_mmap_pgoff+0x1a6/0x3a0 [ 61.908405] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 61.908774] ksys_mmap_pgoff+0x3af/0x500 [ 61.909106] do_syscall_64+0x3f/0x90 [ 61.909415] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.909842] RIP: 0033:0x7fec4e430d82 [ 61.910135] 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 [ 61.911521] RSP: 002b:00007ffdb7564af8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 61.912117] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fec4e430d82 [ 61.912663] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fec4d86a000 [ 61.913218] RBP: 00007fec4d86a000 R08: 0000000000000009 R09: 0000000000001000 [ 61.913775] R10: 0000000000000812 R11: 0000000000000206 R12: 000055714dfd2ec0 [ 61.914325] R13: 00007ffdb7564b10 R14: 00007ffdb7564b40 R15: 00007ffdb7564ea0 [ 61.914874] [ 61.915063] [ 61.915204] Allocated by task 212: [ 61.915481] kasan_save_stack+0x22/0x50 [ 61.915810] kasan_set_track+0x25/0x30 [ 61.916129] __kasan_slab_alloc+0x59/0x70 [ 61.916464] kmem_cache_alloc+0x16b/0x370 [ 61.916795] vm_area_dup+0x20/0x160 [ 61.917087] __split_vma+0x170/0x950 [ 61.917390] split_vma+0xc6/0x110 [ 61.917673] mprotect_fixup+0x8d2/0xb30 [ 61.918000] do_mprotect_pkey+0x87e/0xd40 [ 61.918334] __x64_sys_mprotect+0x78/0xc0 [ 61.918672] do_syscall_64+0x3f/0x90 [ 61.918975] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.919384] [ 61.919522] Freed by task 0: [ 61.919761] kasan_save_stack+0x22/0x50 [ 61.920083] kasan_set_track+0x25/0x30 [ 61.920399] kasan_save_free_info+0x2b/0x50 [ 61.920742] __kasan_slab_free+0x10a/0x190 [ 61.921083] kmem_cache_free+0x10d/0x4d0 [ 61.921408] rcu_core+0x8c8/0x2860 [ 61.921694] __do_softirq+0x1b7/0x7d4 [ 61.922016] [ 61.922154] Last potentially related work creation: [ 61.922530] kasan_save_stack+0x22/0x50 [ 61.922854] __kasan_record_aux_stack+0x8e/0xa0 [ 61.923226] __call_rcu_common.constprop.0+0x6a/0xb90 [ 61.923640] remove_vma+0x139/0x170 [ 61.923929] do_vmi_align_munmap+0xd4a/0x11f0 [ 61.924284] do_vmi_munmap+0x1f1/0x2b0 [ 61.924598] __vm_munmap+0x138/0x3a0 [ 61.924899] __x64_sys_munmap+0x59/0x80 [ 61.925218] do_syscall_64+0x3f/0x90 [ 61.925521] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.925939] [ 61.926079] The buggy address belongs to the object at ffff88800da721d0 [ 61.926079] which belongs to the cache vm_area_struct of size 168 [ 61.927026] The buggy address is located 88 bytes inside of [ 61.927026] freed 168-byte region [ffff88800da721d0, ffff88800da72278) [ 61.927933] [ 61.928073] The buggy address belongs to the physical page: [ 61.928494] page:0000000071ef4a4d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xda72 [ 61.929190] memcg:ffff88800e142001 [ 61.929464] flags: 0x100000000000200(slab|node=0|zone=1) [ 61.929886] page_type: 0xffffffff() [ 61.930177] raw: 0100000000000200 ffff88800879fc80 ffffea0000316f00 dead000000000006 [ 61.930768] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e142001 [ 61.931350] page dumped because: kasan: bad access detected [ 61.931779] [ 61.931917] Memory state around the buggy address: [ 61.932290] ffff88800da72100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.932840] ffff88800da72180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 61.933394] >ffff88800da72200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 61.933960] ^ [ 61.934317] ffff88800da72280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 61.934865] ffff88800da72300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 61.935412] ================================================================== [ 61.936034] Disabling lock debugging due to kernel taint [ 63.917743] BUG: Bad rss-counter state mm:00000000d868d6db type:MM_FILEPAGES val:33 [ 63.919079] BUG: Bad rss-counter state mm:00000000d868d6db type:MM_ANONPAGES val:22 [ 64.487335] BUG: Bad rss-counter state mm:00000000136cbee9 type:MM_FILEPAGES val:33 [ 64.488600] BUG: Bad rss-counter state mm:00000000136cbee9 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:48799' (ECDSA) to the list of known hosts. 2023/06/20 07:47:27 fuzzer started 2023/06/20 07:47:27 dialing manager at localhost:44161 2023/06/20 07:47:27 checking machine... 2023/06/20 07:47:27 checking revisions... [ 65.200419] kmemleak: Automatic memory scanning thread ended 2023/06/20 07:47:27 testing simple program... [ 65.258804] cgroup: Unknown subsys name 'net' [ 65.299826] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:47:25 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffffffff85d3d010 RCX=1ffffffff0ba77f5 RDX=0000000000000000 RSI=0000000000000000 RDI=ffffffff8542aab4 RBP=ffff88806ce3a2d8 RSP=ffff88806ce09c58 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000029b2487d60 R12=ffffffff85d3bf9c R13=ffff88806ce3a2c0 R14=1ffff1100d9c139c R15=0000000000000000 RIP=ffffffff8137cbe4 RFL=00000002 [-------] 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 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=00007ffc0d735b18 CR3=000000000e344000 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=2037323a37343a3730203032206e754a XMM01=657463656e6e6f63736944203a5d3832 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3832325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036323a37343a3730203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000003 RBX=ffff8880098ca2e0 RCX=1ffffffff0ba7a02 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff81371069 RBP=ffff88806cf3a3d8 RSP=ffff88806cf09db0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=00000000000b6996 R12=000000000000007e R13=ffff88806cf3a3a8 R14=ffff88806cf3a2c0 R15=0000000000000000 RIP=ffffffff8450b935 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 00007f1262ab3900 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=00007f126306b0b0 CR3=000000000c952000 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=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