syzkaller login: [ 70.652348] BUG: Bad rss-counter state mm:00000000737eb5e8 type:MM_FILEPAGES val:33 [ 70.653363] BUG: Bad rss-counter state mm:00000000737eb5e8 type:MM_ANONPAGES val:22 [ 70.817191] ================================================================== [ 70.817823] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 70.818477] Read of size 8 at addr ffff88800f8cb968 by task sshd/221 [ 70.819027] [ 70.819175] CPU: 0 PID: 221 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 70.819886] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 70.820552] Call Trace: [ 70.820771] [ 70.820965] dump_stack_lvl+0x91/0xf0 [ 70.821304] print_report+0xcc/0x620 [ 70.821775] ? __virt_addr_valid+0x102/0x340 [ 70.822146] ? vma_interval_tree_remove+0xc75/0xec0 [ 70.822569] ? vma_interval_tree_remove+0xc75/0xec0 [ 70.823005] kasan_report+0xbe/0xf0 [ 70.823335] ? vma_interval_tree_remove+0xc75/0xec0 [ 70.823766] vma_interval_tree_remove+0xc75/0xec0 [ 70.824173] vma_prepare+0xc54/0x11a0 [ 70.824501] __split_vma+0x5af/0x950 [ 70.824823] ? __pfx___split_vma+0x10/0x10 [ 70.825179] ? find_held_lock+0x2c/0x110 [ 70.825536] do_vmi_align_munmap+0x2ba/0x11f0 [ 70.825925] ? lock_is_held_type+0x9f/0x120 [ 70.826290] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 70.826734] ? mtree_range_walk+0x632/0x900 [ 70.827112] ? mas_walk+0x5c7/0x7c0 [ 70.827434] do_vmi_munmap+0x1f1/0x2b0 [ 70.827775] mmap_region+0x1f9/0x2660 [ 70.828102] ? vm_mmap_pgoff+0x15c/0x3a0 [ 70.828451] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 70.828935] ? __pfx_lock_acquire+0x10/0x10 [ 70.829316] ? __pfx_mmap_region+0x10/0x10 [ 70.829682] ? security_mmap_addr+0x7d/0xa0 [ 70.830041] ? get_unmapped_area+0x1f5/0x3f0 [ 70.830423] do_mmap+0x854/0xf00 [ 70.830732] vm_mmap_pgoff+0x1a6/0x3a0 [ 70.831078] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 70.831465] ksys_mmap_pgoff+0x3af/0x500 [ 70.831814] do_syscall_64+0x3f/0x90 [ 70.832144] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 70.832582] RIP: 0033:0x7fc6b275bd82 [ 70.832900] 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 [ 70.834361] RSP: 002b:00007ffda8686a08 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 70.834995] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc6b275bd82 [ 70.835572] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc6b1b95000 [ 70.836147] RBP: 00007fc6b1b95000 R08: 0000000000000009 R09: 0000000000001000 [ 70.836727] R10: 0000000000000812 R11: 0000000000000206 R12: 0000557ccae3df70 [ 70.837307] R13: 00007ffda8686a20 R14: 00007ffda8686a50 R15: 00007ffda8686db0 [ 70.837915] [ 70.838116] [ 70.838263] Allocated by task 214: [ 70.838554] kasan_save_stack+0x22/0x50 [ 70.838917] kasan_set_track+0x25/0x30 [ 70.839253] __kasan_slab_alloc+0x59/0x70 [ 70.839610] kmem_cache_alloc+0x16b/0x370 [ 70.839963] vm_area_dup+0x20/0x160 [ 70.840276] __split_vma+0x170/0x950 [ 70.840594] split_vma+0xc6/0x110 [ 70.840891] mprotect_fixup+0x8d2/0xb30 [ 70.841232] do_mprotect_pkey+0x87e/0xd40 [ 70.841588] __x64_sys_mprotect+0x78/0xc0 [ 70.841940] do_syscall_64+0x3f/0x90 [ 70.842258] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 70.842690] [ 70.842841] Freed by task 13: [ 70.843093] kasan_save_stack+0x22/0x50 [ 70.843426] kasan_set_track+0x25/0x30 [ 70.843752] kasan_save_free_info+0x2b/0x50 [ 70.844234] __kasan_slab_free+0x10a/0x190 [ 70.844596] kmem_cache_free+0x10d/0x4d0 [ 70.844942] rcu_core+0x8c8/0x2860 [ 70.845245] __do_softirq+0x1b7/0x7d4 [ 70.845569] [ 70.845717] Last potentially related work creation: [ 70.846112] kasan_save_stack+0x22/0x50 [ 70.846459] __kasan_record_aux_stack+0x8e/0xa0 [ 70.846879] __call_rcu_common.constprop.0+0x6a/0xb90 [ 70.847347] remove_vma+0x139/0x170 [ 70.847682] do_vmi_align_munmap+0xd4a/0x11f0 [ 70.848097] do_vmi_munmap+0x1f1/0x2b0 [ 70.848440] __vm_munmap+0x138/0x3a0 [ 70.848787] __x64_sys_munmap+0x59/0x80 [ 70.849152] do_syscall_64+0x3f/0x90 [ 70.849488] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 70.849962] [ 70.850114] Second to last potentially related work creation: [ 70.850603] kasan_save_stack+0x22/0x50 [ 70.850960] __kasan_record_aux_stack+0x8e/0xa0 [ 70.851381] __call_rcu_common.constprop.0+0x6a/0xb90 [ 70.851846] remove_vma+0x139/0x170 [ 70.852168] do_vmi_align_munmap+0xd4a/0x11f0 [ 70.852571] do_vmi_munmap+0x1f1/0x2b0 [ 70.852921] mmap_region+0x1f9/0x2660 [ 70.853258] do_mmap+0x854/0xf00 [ 70.853569] vm_mmap_pgoff+0x1a6/0x3a0 [ 70.853918] ksys_mmap_pgoff+0x3af/0x500 [ 70.854277] do_syscall_64+0x3f/0x90 [ 70.854618] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 70.855096] [ 70.855249] The buggy address belongs to the object at ffff88800f8cb910 [ 70.855249] which belongs to the cache vm_area_struct of size 168 [ 70.856321] The buggy address is located 88 bytes inside of [ 70.856321] freed 168-byte region [ffff88800f8cb910, ffff88800f8cb9b8) [ 70.857341] [ 70.857501] The buggy address belongs to the physical page: [ 70.857973] page:000000000fe81512 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf8cb [ 70.858766] memcg:ffff888019df9601 [ 70.859073] flags: 0x100000000000200(slab|node=0|zone=1) [ 70.859540] page_type: 0xffffffff() [ 70.859863] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 70.860526] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888019df9601 [ 70.861180] page dumped because: kasan: bad access detected [ 70.861656] [ 70.861814] Memory state around the buggy address: [ 70.862230] ffff88800f8cb800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 70.862854] ffff88800f8cb880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 70.863465] >ffff88800f8cb900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 70.864082] ^ [ 70.864649] ffff88800f8cb980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 70.865265] ffff88800f8cba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 70.865880] ================================================================== [ 70.866819] Disabling lock debugging due to kernel taint [ 72.585574] BUG: Bad rss-counter state mm:0000000066c8493b type:MM_FILEPAGES val:33 [ 72.586479] BUG: Bad rss-counter state mm:0000000066c8493b type:MM_ANONPAGES val:22 [ 73.026317] BUG: Bad rss-counter state mm:000000004b94de28 type:MM_FILEPAGES val:33 [ 73.027202] BUG: Bad rss-counter state mm:000000004b94de28 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:25810' (ECDSA) to the list of known hosts. 2023/06/20 07:18:57 fuzzer started 2023/06/20 07:18:57 dialing manager at localhost:44161 2023/06/20 07:18:57 checking machine... 2023/06/20 07:18:57 checking revisions... [ 73.748465] kmemleak: Automatic memory scanning thread ended 2023/06/20 07:18:58 testing simple program... [ 73.809720] cgroup: Unknown subsys name 'net' [ 73.847664] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:18:17 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88801a32c060 RCX=ffff88800879f3c0 RDX=ffffea000068cb00 RSI=0000000000000004 RDI=ffff88806ce40140 RBP=0000000000000000 RSP=ffff88800f027a38 R8 =ffff88801a32c000 R9 =ffffed100d9c8028 R10=ffff88806ce40143 R11=00000000000b6996 R12=dffffc0000000000 R13=ffff88800f027a78 R14=ffff88800879f3c0 R15=ffff88801a2c7f60 RIP=ffffffff81810196 RFL=00000202 [-------] 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 00007f459bbdd900 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=00007fff06eab000 CR3=000000000f0ac000 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=6720646572637465733a4d41503d706f 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 info registers vcpu 1 RAX=0000000080000101 RBX=000000000000000d RCX=1ffffffff0ba7a02 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff81810591 RBP=000000000000000e RSP=ffff88806cf09e60 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=0000000000000000 R12=dffffc0000000000 R13=ffff88806cf09ee8 R14=ffff88806cf35000 R15=ffff88801467c500 RIP=ffffffff814c07eb RFL=00000202 [-------] 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 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=00007fcf1f81dd80 CR3=00000000145f2000 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=2037353a38313a3730203032206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037353a38313a3730203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000