syzkaller login: [ 34.654062] BUG: Bad rss-counter state mm:0000000041bc9bbb type:MM_FILEPAGES val:33 [ 34.655110] BUG: Bad rss-counter state mm:0000000041bc9bbb type:MM_ANONPAGES val:22 [ 34.820009] ================================================================== [ 34.820990] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 34.821939] Read of size 8 at addr ffff88800e536df0 by task sshd/220 [ 34.822715] [ 34.822935] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 34.823955] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 34.824956] Call Trace: [ 34.825281] [ 34.825569] dump_stack_lvl+0x91/0xf0 [ 34.826080] print_report+0xcc/0x620 [ 34.826577] ? __virt_addr_valid+0x102/0x340 [ 34.827130] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.827748] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.828377] kasan_report+0xbe/0xf0 [ 34.828877] ? vma_interval_tree_remove+0xc75/0xec0 [ 34.829503] vma_interval_tree_remove+0xc75/0xec0 [ 34.830111] vma_prepare+0xc54/0x11a0 [ 34.830595] __split_vma+0x5af/0x950 [ 34.831078] ? __pfx___split_vma+0x10/0x10 [ 34.831617] ? find_held_lock+0x2c/0x110 [ 34.832142] do_vmi_align_munmap+0x2ba/0x11f0 [ 34.832726] ? lock_is_held_type+0x9f/0x120 [ 34.833273] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 34.833896] ? mtree_range_walk+0x632/0x900 [ 34.834458] ? mas_walk+0x5c7/0x7c0 [ 34.834933] do_vmi_munmap+0x1f1/0x2b0 [ 34.835434] mmap_region+0x1f9/0x2660 [ 34.835916] ? vm_mmap_pgoff+0x15c/0x3a0 [ 34.836434] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 34.837158] ? __pfx_lock_acquire+0x10/0x10 [ 34.837698] ? __pfx_mmap_region+0x10/0x10 [ 34.838235] ? security_mmap_addr+0x7d/0xa0 [ 34.838769] ? get_unmapped_area+0x1f5/0x3f0 [ 34.839328] do_mmap+0x854/0xf00 [ 34.839774] vm_mmap_pgoff+0x1a6/0x3a0 [ 34.840275] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 34.840862] ksys_mmap_pgoff+0x3af/0x500 [ 34.841366] do_syscall_64+0x3f/0x90 [ 34.841849] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.842501] RIP: 0033:0x7f8d75a45d82 [ 34.842963] 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 [ 34.845119] RSP: 002b:00007fffb91cc2f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 34.846037] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8d75a45d82 [ 34.846887] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f8d74e7f000 [ 34.847740] RBP: 00007f8d74e7f000 R08: 0000000000000009 R09: 0000000000001000 [ 34.848589] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562a6d356ec0 [ 34.849460] R13: 00007fffb91cc310 R14: 00007fffb91cc340 R15: 00007fffb91cc6a0 [ 34.850328] [ 34.850630] [ 34.850852] Allocated by task 213: [ 34.851289] kasan_save_stack+0x22/0x50 [ 34.851795] kasan_set_track+0x25/0x30 [ 34.852294] __kasan_slab_alloc+0x59/0x70 [ 34.852826] kmem_cache_alloc+0x16b/0x370 [ 34.853349] vm_area_dup+0x20/0x160 [ 34.853820] __split_vma+0x170/0x950 [ 34.854297] split_vma+0xc6/0x110 [ 34.854739] mprotect_fixup+0x8d2/0xb30 [ 34.855249] do_mprotect_pkey+0x87e/0xd40 [ 34.855782] __x64_sys_mprotect+0x78/0xc0 [ 34.856309] do_syscall_64+0x3f/0x90 [ 34.856801] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.857454] [ 34.857669] Freed by task 213: [ 34.858067] kasan_save_stack+0x22/0x50 [ 34.858579] kasan_set_track+0x25/0x30 [ 34.859071] kasan_save_free_info+0x2b/0x50 [ 34.859611] __kasan_slab_free+0x10a/0x190 [ 34.860153] kmem_cache_free+0x10d/0x4d0 [ 34.860674] rcu_core+0x8c8/0x2860 [ 34.861125] __do_softirq+0x1b7/0x7d4 [ 34.861602] [ 34.861818] Last potentially related work creation: [ 34.862409] kasan_save_stack+0x22/0x50 [ 34.862917] __kasan_record_aux_stack+0x8e/0xa0 [ 34.863498] __call_rcu_common.constprop.0+0x6a/0xb90 [ 34.864154] remove_vma+0x139/0x170 [ 34.864635] do_vmi_align_munmap+0xd4a/0x11f0 [ 34.865251] do_vmi_munmap+0x1f1/0x2b0 [ 34.865746] __vm_munmap+0x138/0x3a0 [ 34.866217] __x64_sys_munmap+0x59/0x80 [ 34.866720] do_syscall_64+0x3f/0x90 [ 34.867193] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.867857] [ 34.868079] Second to last potentially related work creation: [ 34.868789] kasan_save_stack+0x22/0x50 [ 34.869296] __kasan_record_aux_stack+0x8e/0xa0 [ 34.869882] __call_rcu_common.constprop.0+0x6a/0xb90 [ 34.870537] remove_vma+0x139/0x170 [ 34.871003] do_vmi_align_munmap+0xd4a/0x11f0 [ 34.871567] do_vmi_munmap+0x1f1/0x2b0 [ 34.872067] mmap_region+0x1f9/0x2660 [ 34.872553] do_mmap+0x854/0xf00 [ 34.873008] vm_mmap_pgoff+0x1a6/0x3a0 [ 34.873525] ksys_mmap_pgoff+0x7d/0x500 [ 34.874032] do_syscall_64+0x3f/0x90 [ 34.874525] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 34.875194] [ 34.875410] The buggy address belongs to the object at ffff88800e536d98 [ 34.875410] which belongs to the cache vm_area_struct of size 168 [ 34.877004] The buggy address is located 88 bytes inside of [ 34.877004] freed 168-byte region [ffff88800e536d98, ffff88800e536e40) [ 34.878464] [ 34.878684] The buggy address belongs to the physical page: [ 34.879380] page:000000001429845c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe536 [ 34.880514] memcg:ffff88800f333301 [ 34.880945] flags: 0x100000000000200(slab|node=0|zone=1) [ 34.881597] page_type: 0xffffffff() [ 34.882060] raw: 0100000000000200 ffff88800879fc80 ffffea000067e080 dead000000000004 [ 34.882988] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f333301 [ 34.883889] page dumped because: kasan: bad access detected [ 34.884551] [ 34.884794] Memory state around the buggy address: [ 34.885381] ffff88800e536c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 34.886236] ffff88800e536d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 34.887091] >ffff88800e536d80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 34.887946] ^ [ 34.888757] ffff88800e536e00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 34.889620] ffff88800e536e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 34.890467] ================================================================== [ 34.891379] Disabling lock debugging due to kernel taint [ 36.878944] BUG: Bad rss-counter state mm:0000000048332a03 type:MM_FILEPAGES val:33 [ 36.880149] BUG: Bad rss-counter state mm:0000000048332a03 type:MM_ANONPAGES val:22 [ 37.271683] BUG: Bad rss-counter state mm:00000000c9c00ec2 type:MM_FILEPAGES val:33 [ 37.273105] BUG: Bad rss-counter state mm:00000000c9c00ec2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:25510' (ECDSA) to the list of known hosts. 2023/06/20 03:19:46 fuzzer started 2023/06/20 03:19:46 dialing manager at localhost:44161 2023/06/20 03:19:46 checking machine... 2023/06/20 03:19:46 checking revisions... [ 37.980255] kmemleak: Automatic memory scanning thread ended 2023/06/20 03:19:46 testing simple program... [ 38.026878] cgroup: Unknown subsys name 'net' [ 38.062302] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:19:42 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88800c69fed0 RCX=0000000000000000 RDX=ffff888006821b40 RSI=ffffffff818c2c7d RDI=ffff88800c69fed0 RBP=ffff88800c69fea0 RSP=ffff88800c69fe78 R8 =0000000000000005 R9 =0000000000000000 R10=00000000000001f4 R11=0000000000000000 R12=0000000000000000 R13=000000001dcd6500 R14=00007fffabef6898 R15=0000000000000000 RIP=ffffffff814c081b 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 00007ff1553f4900 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=00007fffabef7000 CR3=000000000e6b8000 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=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 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 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 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=00007f48787d3bc0 CR3=000000000999a000 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=dab473b3a445bf9d70445c8760fb7f68 XMM02=ec2efd57dc4c00df000000000011faf0 XMM03=1e4dffd7fbd1e5d5000000000011fbc0 XMM04=307d812851a9000100000000000ae988 XMM05=fcf4d456556a4e6b0000000000135ec8 XMM06=4fda316b135da52b0000000000134f68 XMM07=e042d86d42eb936e0000000000124470 XMM08=1e4dffd7fbd1e5d5000000000011fbc0 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000