syzkaller login: [ 35.712523] BUG: Bad rss-counter state mm:0000000029e8bf7a type:MM_FILEPAGES val:33 [ 35.713282] BUG: Bad rss-counter state mm:0000000029e8bf7a type:MM_ANONPAGES val:22 [ 35.741733] ================================================================== [ 35.742438] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 35.743103] Read of size 8 at addr ffff88801611f3f8 by task sshd/221 [ 35.743644] [ 35.743797] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 35.744402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 35.745126] Call Trace: [ 35.745503] [ 35.745705] dump_stack_lvl+0x91/0xf0 [ 35.746058] print_report+0xcc/0x620 [ 35.746398] ? __virt_addr_valid+0x102/0x340 [ 35.746789] ? vma_interval_tree_remove+0xc75/0xec0 [ 35.747228] ? vma_interval_tree_remove+0xc75/0xec0 [ 35.747684] kasan_report+0xbe/0xf0 [ 35.748026] ? vma_interval_tree_remove+0xc75/0xec0 [ 35.748467] vma_interval_tree_remove+0xc75/0xec0 [ 35.748910] vma_prepare+0xc54/0x11a0 [ 35.749253] __split_vma+0x5af/0x950 [ 35.749586] ? __pfx___split_vma+0x10/0x10 [ 35.749951] ? find_held_lock+0x2c/0x110 [ 35.750318] do_vmi_align_munmap+0x2ba/0x11f0 [ 35.750724] ? lock_is_held_type+0x9f/0x120 [ 35.751107] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 35.751538] ? mtree_range_walk+0x632/0x900 [ 35.751929] ? mas_walk+0x5c7/0x7c0 [ 35.752263] do_vmi_munmap+0x1f1/0x2b0 [ 35.752623] mmap_region+0x1f9/0x2660 [ 35.752979] ? vm_mmap_pgoff+0x15c/0x3a0 [ 35.753340] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 35.753841] ? __pfx_lock_acquire+0x10/0x10 [ 35.754222] ? __pfx_mmap_region+0x10/0x10 [ 35.754613] ? security_mmap_addr+0x7d/0xa0 [ 35.754993] ? get_unmapped_area+0x1f5/0x3f0 [ 35.755382] do_mmap+0x854/0xf00 [ 35.755698] vm_mmap_pgoff+0x1a6/0x3a0 [ 35.756050] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 35.756455] ksys_mmap_pgoff+0x3af/0x500 [ 35.756818] do_syscall_64+0x3f/0x90 [ 35.757184] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.757633] RIP: 0033:0x7fa14d7a0d82 [ 35.757953] 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 [ 35.759462] RSP: 002b:00007ffc24f8f288 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 35.760102] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa14d7a0d82 [ 35.760714] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa14cbda000 [ 35.761355] RBP: 00007fa14cbda000 R08: 0000000000000009 R09: 0000000000001000 [ 35.761946] R10: 0000000000000812 R11: 0000000000000206 R12: 00005610a89f7f70 [ 35.762588] R13: 00007ffc24f8f2a0 R14: 00007ffc24f8f2d0 R15: 00007ffc24f8f630 [ 35.763197] [ 35.763400] [ 35.763556] Allocated by task 213: [ 35.763859] kasan_save_stack+0x22/0x50 [ 35.764218] kasan_set_track+0x25/0x30 [ 35.764711] __kasan_slab_alloc+0x59/0x70 [ 35.765120] kmem_cache_alloc+0x16b/0x370 [ 35.765504] vm_area_dup+0x20/0x160 [ 35.765846] __split_vma+0x170/0x950 [ 35.766186] split_vma+0xc6/0x110 [ 35.766503] mprotect_fixup+0x8d2/0xb30 [ 35.766863] do_mprotect_pkey+0x87e/0xd40 [ 35.767243] __x64_sys_mprotect+0x78/0xc0 [ 35.767630] do_syscall_64+0x3f/0x90 [ 35.767980] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.768429] [ 35.768584] Freed by task 213: [ 35.768883] kasan_save_stack+0x22/0x50 [ 35.769253] kasan_set_track+0x25/0x30 [ 35.769610] kasan_save_free_info+0x2b/0x50 [ 35.769996] __kasan_slab_free+0x10a/0x190 [ 35.770391] kmem_cache_free+0x10d/0x4d0 [ 35.770755] rcu_core+0x8c8/0x2860 [ 35.771081] __do_softirq+0x1b7/0x7d4 [ 35.771427] [ 35.771586] Last potentially related work creation: [ 35.772026] kasan_save_stack+0x22/0x50 [ 35.772393] __kasan_record_aux_stack+0x8e/0xa0 [ 35.772807] __call_rcu_common.constprop.0+0x6a/0xb90 [ 35.773307] remove_vma+0x139/0x170 [ 35.773635] do_vmi_align_munmap+0xd4a/0x11f0 [ 35.774065] do_vmi_munmap+0x1f1/0x2b0 [ 35.774433] __vm_munmap+0x138/0x3a0 [ 35.774781] __x64_sys_munmap+0x59/0x80 [ 35.775152] do_syscall_64+0x3f/0x90 [ 35.775515] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.775999] [ 35.776170] Second to last potentially related work creation: [ 35.776681] kasan_save_stack+0x22/0x50 [ 35.777067] __kasan_record_aux_stack+0x8e/0xa0 [ 35.777504] __call_rcu_common.constprop.0+0x6a/0xb90 [ 35.777966] remove_vma+0x139/0x170 [ 35.778295] do_vmi_align_munmap+0xd4a/0x11f0 [ 35.778710] do_vmi_munmap+0x1f1/0x2b0 [ 35.779079] mmap_region+0x1f9/0x2660 [ 35.779426] do_mmap+0x854/0xf00 [ 35.779844] vm_mmap_pgoff+0x1a6/0x3a0 [ 35.780196] ksys_mmap_pgoff+0x3af/0x500 [ 35.780546] do_syscall_64+0x3f/0x90 [ 35.780891] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 35.781343] [ 35.781495] The buggy address belongs to the object at ffff88801611f3a0 [ 35.781495] which belongs to the cache vm_area_struct of size 168 [ 35.782525] The buggy address is located 88 bytes inside of [ 35.782525] freed 168-byte region [ffff88801611f3a0, ffff88801611f448) [ 35.783518] [ 35.783671] The buggy address belongs to the physical page: [ 35.784140] page:00000000bea9a7f8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1611f [ 35.784954] memcg:ffff888016114301 [ 35.785262] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 35.785760] page_type: 0xffffffff() [ 35.786081] raw: 0100000000000200 ffff88800879fc80 ffffea0000289900 dead000000000005 [ 35.786726] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016114301 [ 35.787362] page dumped because: kasan: bad access detected [ 35.787833] [ 35.787986] Memory state around the buggy address: [ 35.788398] ffff88801611f280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 35.789026] ffff88801611f300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 35.789631] >ffff88801611f380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 35.790237] ^ [ 35.790839] ffff88801611f400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 35.791439] ffff88801611f480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 35.792044] ================================================================== [ 35.792837] Disabling lock debugging due to kernel taint [ 37.566343] BUG: Bad rss-counter state mm:00000000513a2226 type:MM_FILEPAGES val:33 [ 37.566930] BUG: Bad rss-counter state mm:00000000513a2226 type:MM_ANONPAGES val:22 [ 38.014420] BUG: Bad rss-counter state mm:00000000146d4a5c type:MM_FILEPAGES val:33 [ 38.015189] BUG: Bad rss-counter state mm:00000000146d4a5c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7966' (ECDSA) to the list of known hosts. 2023/06/20 09:09:08 fuzzer started 2023/06/20 09:09:08 dialing manager at localhost:44161 2023/06/20 09:09:08 checking machine... 2023/06/20 09:09:08 checking revisions... [ 38.543654] kmemleak: Automatic memory scanning thread ended 2023/06/20 09:09:08 testing simple program... [ 38.589135] cgroup: Unknown subsys name 'net' [ 38.622286] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 09:09:03 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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 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=00007fff976a3d38 CR3=000000000efa6000 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=2038303a39303a3930203032206e754a XMM01=657463656e6e6f63736944203a5d3033 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3033325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038303a39303a3930203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff88800feef2b8 RCX=ffffffff86137501 RDX=0000000000000000 RSI=ffffffff8180c585 RDI=ffff88800feef2c4 RBP=0000000000000001 RSP=ffff88800feef1d0 R8 =ffffffff8613751e R9 =ffff88800feef230 R10=0000000000038001 R11=0000000000020d8a R12=ffff88800feef2b8 R13=0000000000000000 R14=ffff88800f191b40 R15=0000000000001000 RIP=ffffffff813ad4b6 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 00007f13d0e45900 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=00007f13d13fc618 CR3=000000000da0a000 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=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