syzkaller login: [ 28.703746] BUG: Bad rss-counter state mm:00000000d115b7c2 type:MM_FILEPAGES val:33 [ 28.705718] BUG: Bad rss-counter state mm:00000000d115b7c2 type:MM_ANONPAGES val:22 [ 28.843617] ================================================================== [ 28.844734] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.845873] Read of size 8 at addr ffff88800f23b058 by task sshd/219 [ 28.846958] [ 28.847221] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.848128] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.848909] Call Trace: [ 28.849166] [ 28.849392] dump_stack_lvl+0x91/0xf0 [ 28.849787] print_report+0xcc/0x620 [ 28.850177] ? __virt_addr_valid+0x102/0x340 [ 28.850614] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.851110] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.851614] kasan_report+0xbe/0xf0 [ 28.852000] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.852504] vma_interval_tree_remove+0xc75/0xec0 [ 28.852984] vma_prepare+0xc54/0x11a0 [ 28.853364] __split_vma+0x5af/0x950 [ 28.853739] ? __pfx___split_vma+0x10/0x10 [ 28.854160] ? find_held_lock+0x2c/0x110 [ 28.854576] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.855039] ? lock_is_held_type+0x9f/0x120 [ 28.855482] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.855968] ? mtree_range_walk+0x632/0x900 [ 28.856413] ? mas_walk+0x5c7/0x7c0 [ 28.856789] do_vmi_munmap+0x1f1/0x2b0 [ 28.857185] mmap_region+0x1f9/0x2660 [ 28.857567] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.857987] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.858556] ? __pfx_lock_acquire+0x10/0x10 [ 28.858984] ? __pfx_mmap_region+0x10/0x10 [ 28.859427] ? security_mmap_addr+0x7d/0xa0 [ 28.859855] ? get_unmapped_area+0x1f5/0x3f0 [ 28.860292] do_mmap+0x854/0xf00 [ 28.860644] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.861029] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.861476] ksys_mmap_pgoff+0x3af/0x500 [ 28.861881] do_syscall_64+0x3f/0x90 [ 28.862274] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.862805] RIP: 0033:0x7fd1b762cd82 [ 28.863166] 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 [ 28.864890] RSP: 002b:00007ffce5327288 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.865608] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd1b762cd82 [ 28.866288] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd1b6a66000 [ 28.866971] RBP: 00007fd1b6a66000 R08: 0000000000000009 R09: 0000000000001000 [ 28.867677] R10: 0000000000000812 R11: 0000000000000206 R12: 0000563c780def70 [ 28.868363] R13: 00007ffce53272a0 R14: 00007ffce53272d0 R15: 00007ffce5327630 [ 28.869050] [ 28.869277] [ 28.869447] Allocated by task 212: [ 28.869788] kasan_save_stack+0x22/0x50 [ 28.870192] kasan_set_track+0x25/0x30 [ 28.870578] __kasan_slab_alloc+0x59/0x70 [ 28.870989] kmem_cache_alloc+0x16b/0x370 [ 28.871405] vm_area_dup+0x20/0x160 [ 28.871761] __split_vma+0x170/0x950 [ 28.872126] split_vma+0xc6/0x110 [ 28.872479] mprotect_fixup+0x8d2/0xb30 [ 28.872875] do_mprotect_pkey+0x87e/0xd40 [ 28.873282] __x64_sys_mprotect+0x78/0xc0 [ 28.873693] do_syscall_64+0x3f/0x90 [ 28.874076] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.874586] [ 28.874757] Freed by task 210: [ 28.875079] kasan_save_stack+0x22/0x50 [ 28.875488] kasan_set_track+0x25/0x30 [ 28.875877] kasan_save_free_info+0x2b/0x50 [ 28.876299] __kasan_slab_free+0x10a/0x190 [ 28.876717] kmem_cache_free+0x10d/0x4d0 [ 28.877122] rcu_core+0x8c8/0x2860 [ 28.877473] __do_softirq+0x1b7/0x7d4 [ 28.877855] [ 28.878025] Last potentially related work creation: [ 28.878484] kasan_save_stack+0x22/0x50 [ 28.878876] __kasan_record_aux_stack+0x8e/0xa0 [ 28.879327] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.879859] remove_vma+0x139/0x170 [ 28.880219] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.880655] do_vmi_munmap+0x1f1/0x2b0 [ 28.881039] __vm_munmap+0x138/0x3a0 [ 28.881406] __x64_sys_munmap+0x59/0x80 [ 28.881804] do_syscall_64+0x3f/0x90 [ 28.882170] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.882685] [ 28.882853] The buggy address belongs to the object at ffff88800f23b000 [ 28.882853] which belongs to the cache vm_area_struct of size 168 [ 28.884017] The buggy address is located 88 bytes inside of [ 28.884017] freed 168-byte region [ffff88800f23b000, ffff88800f23b0a8) [ 28.885123] [ 28.885291] The buggy address belongs to the physical page: [ 28.885809] page:00000000cf8817dd refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf23b [ 28.886664] memcg:ffff88800e551801 [ 28.887006] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 28.887665] page_type: 0xffffffff() [ 28.888021] raw: 0100000000000200 ffff8880087a0c80 ffffea00002a40c0 dead000000000007 [ 28.888746] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e551801 [ 28.889465] page dumped because: kasan: bad access detected [ 28.889994] [ 28.890165] Memory state around the buggy address: [ 28.890620] ffff88800f23af00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.891299] ffff88800f23af80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.891990] >ffff88800f23b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.892672] ^ [ 28.893250] ffff88800f23b080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 28.893932] ffff88800f23b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.894598] ================================================================== [ 28.895372] Disabling lock debugging due to kernel taint [ 31.647915] BUG: Bad rss-counter state mm:00000000656bbbe3 type:MM_FILEPAGES val:33 [ 31.648987] BUG: Bad rss-counter state mm:00000000656bbbe3 type:MM_ANONPAGES val:22 [ 32.165742] BUG: Bad rss-counter state mm:000000007d07c37f type:MM_FILEPAGES val:33 [ 32.166747] BUG: Bad rss-counter state mm:000000007d07c37f type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:54953' (ECDSA) to the list of known hosts. 2023/06/20 15:11:56 fuzzer started 2023/06/20 15:11:56 dialing manager at localhost:36067 2023/06/20 15:11:56 checking machine... 2023/06/20 15:11:56 checking revisions... [ 32.879832] kmemleak: Automatic memory scanning thread ended 2023/06/20 15:11:57 testing simple program... [ 32.927013] cgroup: Unknown subsys name 'net' [ 32.964780] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:11:56 Registers: info registers vcpu 0 RAX=ffff88801bc30228 RBX=ffff888008d9fdc8 RCX=1ffff11003786045 RDX=dffffc0000000000 RSI=0000000000000008 RDI=ffff888008d9fdd8 RBP=0000000000000009 RSP=ffff888008d9fd30 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000128 R12=dffffc0000000000 R13=ffff888008d9fdc8 R14=ffff88806ce35000 R15=ffff888018df5150 RIP=ffffffff8137fcd4 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 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=00007fb08c39d01c CR3=0000000019f54000 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=2036353a31313a3531203032206e754a XMM01=657463656e6e6f63736944203a5d3932 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3932325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036353a31313a3531203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffff888018c90c98 RCX=0000000000000000 RDX=1ffff11003192199 RSI=ffff888018c90ec0 RDI=ffff888010092de0 RBP=ffff888010092c80 RSP=ffff888019c2fa88 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000001 R12=0000000000000000 R13=ffff888010092e00 R14=0000000000000000 R15=ffff888018c90ec0 RIP=ffffffff81658f54 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 00007fb08c3e9900 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=000055fb64b60954 CR3=000000000e316000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000