syzkaller login: [ 30.555992] BUG: Bad rss-counter state mm:0000000093e1c458 type:MM_FILEPAGES val:33 [ 30.557318] BUG: Bad rss-counter state mm:0000000093e1c458 type:MM_ANONPAGES val:22 [ 30.701087] ================================================================== [ 30.702178] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.703261] Read of size 8 at addr ffff88800e993140 by task sshd/221 [ 30.704130] [ 30.704338] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.705157] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.706099] Call Trace: [ 30.706404] [ 30.706679] dump_stack_lvl+0x91/0xf0 [ 30.707147] print_report+0xcc/0x620 [ 30.707617] ? __virt_addr_valid+0x102/0x340 [ 30.708138] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.708723] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.709310] kasan_report+0xbe/0xf0 [ 30.709763] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.710362] vma_interval_tree_remove+0xc75/0xec0 [ 30.710935] vma_prepare+0xc54/0x11a0 [ 30.711409] __split_vma+0x5af/0x950 [ 30.711879] ? __pfx___split_vma+0x10/0x10 [ 30.712411] ? find_held_lock+0x2c/0x110 [ 30.712933] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.713499] ? lock_is_held_type+0x9f/0x120 [ 30.714052] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.714658] ? mtree_range_walk+0x632/0x900 [ 30.715206] ? mas_walk+0x5c7/0x7c0 [ 30.715670] do_vmi_munmap+0x1f1/0x2b0 [ 30.716161] mmap_region+0x1f9/0x2660 [ 30.716641] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.717154] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.717872] ? __pfx_lock_acquire+0x10/0x10 [ 30.718405] ? __pfx_mmap_region+0x10/0x10 [ 30.718938] ? security_mmap_addr+0x7d/0xa0 [ 30.719461] ? get_unmapped_area+0x1f5/0x3f0 [ 30.720010] do_mmap+0x854/0xf00 [ 30.720444] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.720938] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.721496] ksys_mmap_pgoff+0x3af/0x500 [ 30.721997] do_syscall_64+0x3f/0x90 [ 30.722497] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.723136] RIP: 0033:0x7fb60c1dbd82 [ 30.723596] 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 [ 30.725721] RSP: 002b:00007ffc59e016f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.726615] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb60c1dbd82 [ 30.727465] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb60b615000 [ 30.728311] RBP: 00007fb60b615000 R08: 0000000000000009 R09: 0000000000001000 [ 30.729148] R10: 0000000000000812 R11: 0000000000000206 R12: 00005654003c7ec0 [ 30.729999] R13: 00007ffc59e01710 R14: 00007ffc59e01740 R15: 00007ffc59e01aa0 [ 30.730870] [ 30.731162] [ 30.731374] Allocated by task 214: [ 30.731800] kasan_save_stack+0x22/0x50 [ 30.732299] kasan_set_track+0x25/0x30 [ 30.732788] __kasan_slab_alloc+0x59/0x70 [ 30.733313] kmem_cache_alloc+0x16b/0x370 [ 30.733836] vm_area_dup+0x20/0x160 [ 30.734296] __split_vma+0x170/0x950 [ 30.734758] split_vma+0xc6/0x110 [ 30.735193] mprotect_fixup+0x8d2/0xb30 [ 30.735695] do_mprotect_pkey+0x87e/0xd40 [ 30.736212] __x64_sys_mprotect+0x78/0xc0 [ 30.736726] do_syscall_64+0x3f/0x90 [ 30.737195] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.737833] [ 30.738050] Freed by task 214: [ 30.738444] kasan_save_stack+0x22/0x50 [ 30.738956] kasan_set_track+0x25/0x30 [ 30.739446] kasan_save_free_info+0x2b/0x50 [ 30.739971] __kasan_slab_free+0x10a/0x190 [ 30.740511] kmem_cache_free+0x10d/0x4d0 [ 30.741012] rcu_core+0x8c8/0x2860 [ 30.741457] __do_softirq+0x1b7/0x7d4 [ 30.741935] [ 30.742161] Last potentially related work creation: [ 30.742744] kasan_save_stack+0x22/0x50 [ 30.743243] __kasan_record_aux_stack+0x8e/0xa0 [ 30.743808] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.744457] remove_vma+0x139/0x170 [ 30.744913] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.745466] do_vmi_munmap+0x1f1/0x2b0 [ 30.745958] __vm_munmap+0x138/0x3a0 [ 30.746429] __x64_sys_munmap+0x59/0x80 [ 30.746928] do_syscall_64+0x3f/0x90 [ 30.747397] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.748047] [ 30.748264] The buggy address belongs to the object at ffff88800e9930e8 [ 30.748264] which belongs to the cache vm_area_struct of size 168 [ 30.749741] The buggy address is located 88 bytes inside of [ 30.749741] freed 168-byte region [ffff88800e9930e8, ffff88800e993190) [ 30.751159] [ 30.751375] The buggy address belongs to the physical page: [ 30.752031] page:000000000035345f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe993 [ 30.753099] memcg:ffff888016662601 [ 30.753523] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.754178] page_type: 0xffffffff() [ 30.754631] raw: 0100000000000200 ffff88800879fc80 ffffea0000258300 dead000000000008 [ 30.755548] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888016662601 [ 30.756451] page dumped because: kasan: bad access detected [ 30.757113] [ 30.757326] Memory state around the buggy address: [ 30.757905] ffff88800e993000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.758751] ffff88800e993080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.759609] >ffff88800e993100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.760456] ^ [ 30.761091] ffff88800e993180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.761952] ffff88800e993200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.762803] ================================================================== [ 30.763772] Disabling lock debugging due to kernel taint [ 33.218146] BUG: Bad rss-counter state mm:0000000068cb0cd7 type:MM_FILEPAGES val:33 [ 33.219143] BUG: Bad rss-counter state mm:0000000068cb0cd7 type:MM_ANONPAGES val:22 [ 33.725842] BUG: Bad rss-counter state mm:000000002ffb7e1f type:MM_FILEPAGES val:33 [ 33.726913] BUG: Bad rss-counter state mm:000000002ffb7e1f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:15900' (ECDSA) to the list of known hosts. 2023/06/19 16:03:34 fuzzer started 2023/06/19 16:03:34 dialing manager at localhost:44161 2023/06/19 16:03:34 checking machine... 2023/06/19 16:03:34 checking revisions... [ 34.466210] kmemleak: Automatic memory scanning thread ended 2023/06/19 16:03:34 testing simple program... [ 34.523944] cgroup: Unknown subsys name 'net' [ 34.597255] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:03:33 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88806ce3a2c0 RCX=ffffffff81377add RDX=fffffbfff0ba77db RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=ffff88806ce3a2d8 RSP=ffff88806ce09e60 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=ffff888008c58000 R12=ffffffff85616740 R13=0000000000000000 R14=0000000000000002 R15=0000000000000009 RIP=ffffffff8180fd28 RFL=00000256 [---ZAP-] 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=00007fd61d7b74d0 CR3=00000000146c4000 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=2033333a33303a3631203931206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033333a33303a3631203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080000000 RBX=0000000000000010 RCX=ffffffff8449f02b RDX=ffff888019dad1c0 RSI=0000000000000000 RDI=0000000000000006 RBP=ffff88800d3d6a08 RSP=ffff888016bbf0c8 R8 =0000000000000006 R9 =00007f9f525de000 R10=00007f9f525c0fff R11=00000000000b6996 R12=0000000000000001 R13=0000000000000004 R14=00007f9f525de000 R15=00007f9f525c0fff RIP=ffffffff814c07eb RFL=00000212 [----A--] 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 00007f9f5261d900 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=00007f9f525e2008 CR3=00000000183da000 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=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000