syzkaller login: [ 29.069244] BUG: Bad rss-counter state mm:00000000387e4c56 type:MM_FILEPAGES val:33 [ 29.071240] BUG: Bad rss-counter state mm:00000000387e4c56 type:MM_ANONPAGES val:22 [ 29.209302] ================================================================== [ 29.210371] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.211486] Read of size 8 at addr ffff888016571880 by task sshd/221 [ 29.212594] [ 29.212855] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 29.213877] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.215077] Call Trace: [ 29.215461] [ 29.215809] dump_stack_lvl+0x91/0xf0 [ 29.216414] print_report+0xcc/0x620 [ 29.216991] ? __virt_addr_valid+0x102/0x340 [ 29.217651] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.218443] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.219181] kasan_report+0xbe/0xf0 [ 29.219771] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.220580] vma_interval_tree_remove+0xc75/0xec0 [ 29.221292] vma_prepare+0xc54/0x11a0 [ 29.221784] __split_vma+0x5af/0x950 [ 29.222293] ? __pfx___split_vma+0x10/0x10 [ 29.222837] ? find_held_lock+0x2c/0x110 [ 29.223361] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.223937] ? lock_is_held_type+0x9f/0x120 [ 29.224488] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.225102] ? mtree_range_walk+0x632/0x900 [ 29.225661] ? mas_walk+0x5c7/0x7c0 [ 29.226183] do_vmi_munmap+0x1f1/0x2b0 [ 29.226680] mmap_region+0x1f9/0x2660 [ 29.227222] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.227743] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.228479] ? __pfx_lock_acquire+0x10/0x10 [ 29.229014] ? __pfx_mmap_region+0x10/0x10 [ 29.229554] ? security_mmap_addr+0x7d/0xa0 [ 29.230086] ? get_unmapped_area+0x1f5/0x3f0 [ 29.230643] do_mmap+0x854/0xf00 [ 29.231121] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.231630] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.232231] ksys_mmap_pgoff+0x3af/0x500 [ 29.232754] do_syscall_64+0x3f/0x90 [ 29.233246] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.233898] RIP: 0033:0x7f919efebd82 [ 29.234361] 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 [ 29.236583] RSP: 002b:00007fff078a10e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.237501] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f919efebd82 [ 29.238359] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f919e425000 [ 29.239249] RBP: 00007f919e425000 R08: 0000000000000009 R09: 0000000000001000 [ 29.240114] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564f6a7cbec0 [ 29.240972] R13: 00007fff078a1100 R14: 00007fff078a1130 R15: 00007fff078a1490 [ 29.241850] [ 29.242147] [ 29.242376] Allocated by task 213: [ 29.242835] kasan_save_stack+0x22/0x50 [ 29.243399] kasan_set_track+0x25/0x30 [ 29.243897] __kasan_slab_alloc+0x59/0x70 [ 29.244452] kmem_cache_alloc+0x16b/0x370 [ 29.244980] vm_area_dup+0x20/0x160 [ 29.245445] __split_vma+0x170/0x950 [ 29.245915] split_vma+0xc6/0x110 [ 29.246363] mprotect_fixup+0x8d2/0xb30 [ 29.246868] do_mprotect_pkey+0x87e/0xd40 [ 29.247431] __x64_sys_mprotect+0x78/0xc0 [ 29.247972] do_syscall_64+0x3f/0x90 [ 29.248450] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.249097] [ 29.249320] Freed by task 213: [ 29.249717] kasan_save_stack+0x22/0x50 [ 29.250229] kasan_set_track+0x25/0x30 [ 29.250726] kasan_save_free_info+0x2b/0x50 [ 29.251296] __kasan_slab_free+0x10a/0x190 [ 29.251861] kmem_cache_free+0x10d/0x4d0 [ 29.252412] rcu_core+0x8c8/0x2860 [ 29.252860] __do_softirq+0x1b7/0x7d4 [ 29.253340] [ 29.253556] Last potentially related work creation: [ 29.254147] kasan_save_stack+0x22/0x50 [ 29.254657] __kasan_record_aux_stack+0x8e/0xa0 [ 29.255278] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.255950] remove_vma+0x139/0x170 [ 29.256410] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.256971] do_vmi_munmap+0x1f1/0x2b0 [ 29.257460] __vm_munmap+0x138/0x3a0 [ 29.257932] __x64_sys_munmap+0x59/0x80 [ 29.258436] do_syscall_64+0x3f/0x90 [ 29.258917] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.259597] [ 29.259815] The buggy address belongs to the object at ffff888016571828 [ 29.259815] which belongs to the cache vm_area_struct of size 168 [ 29.261307] The buggy address is located 88 bytes inside of [ 29.261307] freed 168-byte region [ffff888016571828, ffff8880165718d0) [ 29.262631] [ 29.262838] The buggy address belongs to the physical page: [ 29.263494] page:0000000015ffee29 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16571 [ 29.264553] memcg:ffff88800f0ed101 [ 29.264953] flags: 0x100000000000200(slab|node=0|zone=1) [ 29.265570] page_type: 0xffffffff() [ 29.265999] raw: 0100000000000200 ffff8880087a0c80 ffffea00002616c0 dead00000000000c [ 29.266861] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f0ed101 [ 29.267743] page dumped because: kasan: bad access detected [ 29.268382] [ 29.268587] Memory state around the buggy address: [ 29.269135] ffff888016571780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 29.269946] ffff888016571800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 29.270751] >ffff888016571880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 29.271593] ^ [ 29.271990] ffff888016571900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.272816] ffff888016571980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc 00 [ 29.273618] ================================================================== [ 29.274594] Disabling lock debugging due to kernel taint [ 31.926456] BUG: Bad rss-counter state mm:000000000e5cd1d3 type:MM_FILEPAGES val:33 [ 31.927736] BUG: Bad rss-counter state mm:000000000e5cd1d3 type:MM_ANONPAGES val:22 [ 32.419619] BUG: Bad rss-counter state mm:00000000ba6f64ae type:MM_FILEPAGES val:33 [ 32.420975] BUG: Bad rss-counter state mm:00000000ba6f64ae type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:25713' (ECDSA) to the list of known hosts. 2023/06/20 22:31:58 fuzzer started 2023/06/20 22:31:58 dialing manager at localhost:36067 2023/06/20 22:31:58 checking machine... 2023/06/20 22:31:58 checking revisions... [ 33.064490] kmemleak: Automatic memory scanning thread ended 2023/06/20 22:31:58 testing simple program... [ 33.118948] cgroup: Unknown subsys name 'net' [ 33.183620] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:31:57 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88800edefe20 RCX=0000000000000000 RDX=ffff888016871b40 RSI=ffffffff844a59bc RDI=0000000000000007 RBP=ffff88800c47be1c RSP=ffff88800edefd88 R8 =0000000000000007 R9 =0000000000001000 R10=ffff88800c47be1e R11=0000000000000000 R12=ffff88800c47be00 R13=ffffed1001dbdfcb R14=ffff88800c47be1c R15=ffff88800edefe59 RIP=ffffffff814c0864 RFL=00000286 [--S--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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f2281eec900 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=00007f22824a3618 CR3=000000000cae4000 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=00000000000000000000000000000000 XMM01=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 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=ffff888008c04400 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=00007fc89ad35670 CR3=0000000008cc4000 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=2037353a31333a3232203032206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037353a31333a3232203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000