syzkaller login: [ 28.743587] BUG: Bad rss-counter state mm:00000000acc0b3b6 type:MM_FILEPAGES val:33 [ 28.744785] BUG: Bad rss-counter state mm:00000000acc0b3b6 type:MM_ANONPAGES val:22 [ 28.906350] ================================================================== [ 28.907284] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.908257] Read of size 8 at addr ffff88800fb626b0 by task sshd/220 [ 28.909048] [ 28.909270] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.910251] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.911251] Call Trace: [ 28.911576] [ 28.911885] dump_stack_lvl+0x91/0xf0 [ 28.912401] print_report+0xcc/0x620 [ 28.912895] ? __virt_addr_valid+0x102/0x340 [ 28.913458] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.914095] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.914716] kasan_report+0xbe/0xf0 [ 28.915204] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.915842] vma_interval_tree_remove+0xc75/0xec0 [ 28.916478] vma_prepare+0xc54/0x11a0 [ 28.916966] __split_vma+0x5af/0x950 [ 28.917442] ? __pfx___split_vma+0x10/0x10 [ 28.917987] ? find_held_lock+0x2c/0x110 [ 28.918513] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.919087] ? lock_is_held_type+0x9f/0x120 [ 28.919633] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.920268] ? mtree_range_walk+0x632/0x900 [ 28.920833] ? mas_walk+0x5c7/0x7c0 [ 28.921316] do_vmi_munmap+0x1f1/0x2b0 [ 28.921823] mmap_region+0x1f9/0x2660 [ 28.922321] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.922852] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.923576] ? __pfx_lock_acquire+0x10/0x10 [ 28.924125] ? __pfx_mmap_region+0x10/0x10 [ 28.924654] ? security_mmap_addr+0x7d/0xa0 [ 28.925194] ? get_unmapped_area+0x1f5/0x3f0 [ 28.925741] do_mmap+0x854/0xf00 [ 28.926186] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.926685] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.927250] ksys_mmap_pgoff+0x3af/0x500 [ 28.927757] do_syscall_64+0x3f/0x90 [ 28.928253] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.928897] RIP: 0033:0x7f5dd8f2dd82 [ 28.929361] 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 [ 28.931528] RSP: 002b:00007fffa2709a48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.932470] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5dd8f2dd82 [ 28.933314] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5dd8367000 [ 28.934162] RBP: 00007f5dd8367000 R08: 0000000000000009 R09: 0000000000001000 [ 28.935024] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a4c0049ec0 [ 28.935867] R13: 00007fffa2709a60 R14: 00007fffa2709a90 R15: 00007fffa2709df0 [ 28.936751] [ 28.937041] [ 28.937258] Allocated by task 213: [ 28.937693] kasan_save_stack+0x22/0x50 [ 28.938204] kasan_set_track+0x25/0x30 [ 28.938701] __kasan_slab_alloc+0x59/0x70 [ 28.939235] kmem_cache_alloc+0x16b/0x370 [ 28.939758] vm_area_dup+0x20/0x160 [ 28.940226] __split_vma+0x170/0x950 [ 28.940695] split_vma+0xc6/0x110 [ 28.941148] mprotect_fixup+0x8d2/0xb30 [ 28.941657] do_mprotect_pkey+0x87e/0xd40 [ 28.942186] __x64_sys_mprotect+0x78/0xc0 [ 28.942709] do_syscall_64+0x3f/0x90 [ 28.943189] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.943839] [ 28.944064] Freed by task 204: [ 28.944458] kasan_save_stack+0x22/0x50 [ 28.944966] kasan_set_track+0x25/0x30 [ 28.945460] kasan_save_free_info+0x2b/0x50 [ 28.946005] __kasan_slab_free+0x10a/0x190 [ 28.946539] kmem_cache_free+0x10d/0x4d0 [ 28.947050] rcu_core+0x8c8/0x2860 [ 28.947498] __do_softirq+0x1b7/0x7d4 [ 28.948010] [ 28.948227] Last potentially related work creation: [ 28.948812] kasan_save_stack+0x22/0x50 [ 28.949321] __kasan_record_aux_stack+0x8e/0xa0 [ 28.949905] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.950635] remove_vma+0x139/0x170 [ 28.951091] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.951649] do_vmi_munmap+0x1f1/0x2b0 [ 28.952151] __vm_munmap+0x138/0x3a0 [ 28.952622] __x64_sys_munmap+0x59/0x80 [ 28.953120] do_syscall_64+0x3f/0x90 [ 28.953597] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.954249] [ 28.954462] The buggy address belongs to the object at ffff88800fb62658 [ 28.954462] which belongs to the cache vm_area_struct of size 168 [ 28.955940] The buggy address is located 88 bytes inside of [ 28.955940] freed 168-byte region [ffff88800fb62658, ffff88800fb62700) [ 28.957370] [ 28.957590] The buggy address belongs to the physical page: [ 28.958249] page:000000002175bfa6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfb62 [ 28.959335] memcg:ffff88800fb63001 [ 28.959764] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.960417] page_type: 0xffffffff() [ 28.960874] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 28.961796] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fb63001 [ 28.962703] page dumped because: kasan: bad access detected [ 28.963364] [ 28.963584] Memory state around the buggy address: [ 28.964182] ffff88800fb62580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.965040] ffff88800fb62600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 28.965897] >ffff88800fb62680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.966750] ^ [ 28.967332] ffff88800fb62700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 28.968202] ffff88800fb62780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 28.969056] ================================================================== [ 28.970157] Disabling lock debugging due to kernel taint [ 30.808972] BUG: Bad rss-counter state mm:0000000010535e01 type:MM_FILEPAGES val:33 [ 30.809720] BUG: Bad rss-counter state mm:0000000010535e01 type:MM_ANONPAGES val:22 [ 31.347097] BUG: Bad rss-counter state mm:00000000617c5a2c type:MM_FILEPAGES val:33 [ 31.348280] BUG: Bad rss-counter state mm:00000000617c5a2c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18956' (ECDSA) to the list of known hosts. 2023/06/20 16:10:22 fuzzer started 2023/06/20 16:10:22 dialing manager at localhost:36067 2023/06/20 16:10:22 checking machine... 2023/06/20 16:10:22 checking revisions... [ 31.999534] kmemleak: Automatic memory scanning thread ended 2023/06/20 16:10:22 testing simple program... [ 32.047098] cgroup: Unknown subsys name 'net' [ 32.096759] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:10:21 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff88806ce09b40 RCX=ffffffff860a1401 RDX=1ffff1100d9c137f RSI=ffffffff8451105e RDI=ffff88806ce09b4c RBP=ffff88806ce09bf8 RSP=ffff88806ce09a58 R8 =ffffffff860a1444 R9 =ffff88806ce09ab8 R10=0000000000038001 R11=000000000000792d R12=ffff88806ce09b40 R13=0000000000000000 R14=ffffffff8542a6c0 R15=ffff888019c09a80 RIP=ffffffff813ad547 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 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=00007f7b9d8b66c0 CR3=000000000fd92000 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=2031323a30313a3631203032206e754a XMM01=657463656e6e6f63736944203a5d3033 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3033325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031323a30313a3631203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=dffffc0000000000 RCX=ffffffff845215fc RDX=ffffed1002cf33a3 RSI=0000000000000008 RDI=ffff888016799d10 RBP=ffff888016aa7948 RSP=ffff888016aa78c0 R8 =0000000000000000 R9 =ffffed1002cf33a2 R10=ffff888016799d17 R11=00000000000b6a61 R12=fffffbfff0f6d440 R13=ffffffff87b6a200 R14=ffff888016799d10 R15=dffffc0000000000 RIP=ffffffff84521636 RFL=00000282 [--S----] 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 00007f2180d2a700 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=00007f36849ee9f0 CR3=000000000fd92000 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=3a5d3033325b646873732031323a3031 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320323239 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000