syzkaller login: [ 30.580339] BUG: Bad rss-counter state mm:00000000b2d79077 type:MM_FILEPAGES val:33 [ 30.581333] BUG: Bad rss-counter state mm:00000000b2d79077 type:MM_ANONPAGES val:22 [ 30.742291] ================================================================== [ 30.743263] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.744205] Read of size 8 at addr ffff88800eb624e0 by task sshd/220 [ 30.744971] [ 30.745188] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.746202] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.747226] Call Trace: [ 30.747550] [ 30.747840] dump_stack_lvl+0x91/0xf0 [ 30.748349] print_report+0xcc/0x620 [ 30.748845] ? __virt_addr_valid+0x102/0x340 [ 30.749400] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.750023] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.750639] kasan_report+0xbe/0xf0 [ 30.751115] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.751772] vma_interval_tree_remove+0xc75/0xec0 [ 30.752374] vma_prepare+0xc54/0x11a0 [ 30.752847] __split_vma+0x5af/0x950 [ 30.753316] ? __pfx___split_vma+0x10/0x10 [ 30.753855] ? find_held_lock+0x2c/0x110 [ 30.754394] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.754956] ? lock_is_held_type+0x9f/0x120 [ 30.755505] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.756116] ? mtree_range_walk+0x632/0x900 [ 30.756666] ? mas_walk+0x5c7/0x7c0 [ 30.757140] do_vmi_munmap+0x1f1/0x2b0 [ 30.757637] mmap_region+0x1f9/0x2660 [ 30.758115] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.758634] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.759362] ? __pfx_lock_acquire+0x10/0x10 [ 30.759893] ? __pfx_mmap_region+0x10/0x10 [ 30.760428] ? security_mmap_addr+0x7d/0xa0 [ 30.760960] ? get_unmapped_area+0x1f5/0x3f0 [ 30.761509] do_mmap+0x854/0xf00 [ 30.761947] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.762447] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.763007] ksys_mmap_pgoff+0x3af/0x500 [ 30.763535] do_syscall_64+0x3f/0x90 [ 30.764015] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.764660] RIP: 0033:0x7fa17bbd3d82 [ 30.765118] 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 [ 30.767249] RSP: 002b:00007fff7e880748 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.768167] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa17bbd3d82 [ 30.769018] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa17b00d000 [ 30.769860] RBP: 00007fa17b00d000 R08: 0000000000000009 R09: 0000000000001000 [ 30.770707] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562c2c83eec0 [ 30.771583] R13: 00007fff7e880760 R14: 00007fff7e880790 R15: 00007fff7e880af0 [ 30.772476] [ 30.772780] [ 30.772994] Allocated by task 213: [ 30.773425] kasan_save_stack+0x22/0x50 [ 30.773940] kasan_set_track+0x25/0x30 [ 30.774444] __kasan_slab_alloc+0x59/0x70 [ 30.774971] kmem_cache_alloc+0x16b/0x370 [ 30.775507] vm_area_dup+0x20/0x160 [ 30.775967] __split_vma+0x170/0x950 [ 30.776438] split_vma+0xc6/0x110 [ 30.776882] mprotect_fixup+0x8d2/0xb30 [ 30.777384] do_mprotect_pkey+0x87e/0xd40 [ 30.777912] __x64_sys_mprotect+0x78/0xc0 [ 30.778440] do_syscall_64+0x3f/0x90 [ 30.778924] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.779612] [ 30.779835] Freed by task 213: [ 30.780239] kasan_save_stack+0x22/0x50 [ 30.780768] kasan_set_track+0x25/0x30 [ 30.781283] kasan_save_free_info+0x2b/0x50 [ 30.781839] __kasan_slab_free+0x10a/0x190 [ 30.782391] kmem_cache_free+0x10d/0x4d0 [ 30.782921] rcu_core+0x8c8/0x2860 [ 30.783414] __do_softirq+0x1b7/0x7d4 [ 30.783904] [ 30.784125] Last potentially related work creation: [ 30.784728] kasan_save_stack+0x22/0x50 [ 30.785248] __kasan_record_aux_stack+0x8e/0xa0 [ 30.785845] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.786519] remove_vma+0x139/0x170 [ 30.787055] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.787643] do_vmi_munmap+0x1f1/0x2b0 [ 30.788146] __vm_munmap+0x138/0x3a0 [ 30.788634] __x64_sys_munmap+0x59/0x80 [ 30.789151] do_syscall_64+0x3f/0x90 [ 30.789642] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.790304] [ 30.790528] The buggy address belongs to the object at ffff88800eb62488 [ 30.790528] which belongs to the cache vm_area_struct of size 168 [ 30.792069] The buggy address is located 88 bytes inside of [ 30.792069] freed 168-byte region [ffff88800eb62488, ffff88800eb62530) [ 30.793531] [ 30.793754] The buggy address belongs to the physical page: [ 30.794436] page:00000000173b6c24 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeb62 [ 30.795578] memcg:ffff888016b4bc01 [ 30.796019] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.796743] page_type: 0xffffffff() [ 30.797212] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 0000000000000001 [ 30.798164] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016b4bc01 [ 30.799115] page dumped because: kasan: bad access detected [ 30.799818] [ 30.800042] Memory state around the buggy address: [ 30.800650] ffff88800eb62380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.801547] ffff88800eb62400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 30.802433] >ffff88800eb62480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.803321] ^ [ 30.804100] ffff88800eb62500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 [ 30.804985] ffff88800eb62580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.805869] ================================================================== [ 30.806994] Disabling lock debugging due to kernel taint [ 33.044770] BUG: Bad rss-counter state mm:00000000a2b92741 type:MM_FILEPAGES val:33 [ 33.046423] BUG: Bad rss-counter state mm:00000000a2b92741 type:MM_ANONPAGES val:22 [ 33.509513] BUG: Bad rss-counter state mm:0000000069803e1d type:MM_FILEPAGES val:33 [ 33.510506] BUG: Bad rss-counter state mm:0000000069803e1d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:28791' (ECDSA) to the list of known hosts. 2023/06/20 16:59:32 fuzzer started 2023/06/20 16:59:32 dialing manager at localhost:36067 2023/06/20 16:59:32 checking machine... 2023/06/20 16:59:32 checking revisions... [ 34.222354] kmemleak: Automatic memory scanning thread ended 2023/06/20 16:59:32 testing simple program... [ 34.271151] cgroup: Unknown subsys name 'net' [ 34.323247] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:59:32 Registers: info registers vcpu 0 RAX=00007ffd77fad008 RBX=00005633baaeded0 RCX=00000000baafce8d RDX=0000000000000003 RSI=000000000000000a RDI=00005633baafce8d RBP=00007ffd77fad000 RSP=00007ffd77facf98 R8 =00005633baafce8d R9 =00007f007a9cbbe0 R10=000000000000006f R11=0000000000000246 R12=00007f007a419900 R13=00007ffd77fad008 R14=0000000000000003 R15=0000000000000000 RIP=00007f007a968964 RFL=00000206 [-----P-] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f007a419900 00000000 00000000 GS =0000 0000000000000000 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=00007f007a9ce650 CR3=000000000dfb2000 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=0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a XMM01=ffffffffffffff00ffff000000000000 XMM02=ffffffffffffff00ffff000000000000 XMM03=7720656c62697461706d6f63206d6874 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00ffffffffffffffffffffffffffffff XMM08=00000000000000810000363532616873 XMM09=00000000000000000000000000000000 XMM10=00002020202020200020202020202020 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=00007ffeab88d468 CR3=000000000c7c8000 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=39353a3631203032206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3033325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320343331 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000