syzkaller login: [ 30.811245] BUG: Bad rss-counter state mm:00000000d8f423e5 type:MM_FILEPAGES val:33 [ 30.812001] BUG: Bad rss-counter state mm:00000000d8f423e5 type:MM_ANONPAGES val:22 [ 30.945295] ================================================================== [ 30.945968] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.946618] Read of size 8 at addr ffff888019e33310 by task sshd/220 [ 30.947131] [ 30.947291] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.947861] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.948514] Call Trace: [ 30.948747] [ 30.948943] dump_stack_lvl+0x91/0xf0 [ 30.949280] print_report+0xcc/0x620 [ 30.949781] ? __virt_addr_valid+0x102/0x340 [ 30.950152] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.950571] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.950978] kasan_report+0xbe/0xf0 [ 30.951299] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.951719] vma_interval_tree_remove+0xc75/0xec0 [ 30.952110] vma_prepare+0xc54/0x11a0 [ 30.952426] __split_vma+0x5af/0x950 [ 30.952751] ? __pfx___split_vma+0x10/0x10 [ 30.953096] ? find_held_lock+0x2c/0x110 [ 30.953458] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.953833] ? lock_is_held_type+0x9f/0x120 [ 30.954187] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.954588] ? mtree_range_walk+0x632/0x900 [ 30.954949] ? mas_walk+0x5c7/0x7c0 [ 30.955271] do_vmi_munmap+0x1f1/0x2b0 [ 30.955600] mmap_region+0x1f9/0x2660 [ 30.955922] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.956263] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.956761] ? __pfx_lock_acquire+0x10/0x10 [ 30.957118] ? __pfx_mmap_region+0x10/0x10 [ 30.957469] ? security_mmap_addr+0x7d/0xa0 [ 30.957819] ? get_unmapped_area+0x1f5/0x3f0 [ 30.958178] do_mmap+0x854/0xf00 [ 30.958473] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.958804] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.959181] ksys_mmap_pgoff+0x3af/0x500 [ 30.959514] do_syscall_64+0x3f/0x90 [ 30.959832] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.960264] RIP: 0033:0x7fe09d935d82 [ 30.960571] 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 [ 30.961965] RSP: 002b:00007ffc55f742c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.962549] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe09d935d82 [ 30.963108] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe09cd6f000 [ 30.963684] RBP: 00007fe09cd6f000 R08: 0000000000000009 R09: 0000000000001000 [ 30.964251] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c829eefb20 [ 30.964836] R13: 00007ffc55f742e0 R14: 00007ffc55f74310 R15: 00007ffc55f74670 [ 30.965398] [ 30.965596] [ 30.965740] Allocated by task 213: [ 30.966021] kasan_save_stack+0x22/0x50 [ 30.966371] kasan_set_track+0x25/0x30 [ 30.966699] __kasan_slab_alloc+0x59/0x70 [ 30.967047] kmem_cache_alloc+0x16b/0x370 [ 30.967389] vm_area_dup+0x20/0x160 [ 30.967691] __split_vma+0x170/0x950 [ 30.968005] split_vma+0xc6/0x110 [ 30.968304] mprotect_fixup+0x8d2/0xb30 [ 30.968638] do_mprotect_pkey+0x87e/0xd40 [ 30.968996] __x64_sys_mprotect+0x78/0xc0 [ 30.969350] do_syscall_64+0x3f/0x90 [ 30.969672] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.970106] [ 30.970249] Freed by task 202: [ 30.970503] kasan_save_stack+0x22/0x50 [ 30.970835] kasan_set_track+0x25/0x30 [ 30.971158] kasan_save_free_info+0x2b/0x50 [ 30.971515] __kasan_slab_free+0x10a/0x190 [ 30.971870] kmem_cache_free+0x10d/0x4d0 [ 30.972232] rcu_core+0x8c8/0x2860 [ 30.972526] __do_softirq+0x1b7/0x7d4 [ 30.972856] [ 30.972998] Last potentially related work creation: [ 30.973425] kasan_save_stack+0x22/0x50 [ 30.973761] __kasan_record_aux_stack+0x8e/0xa0 [ 30.974132] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.974567] remove_vma+0x139/0x170 [ 30.974870] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.975279] do_vmi_munmap+0x1f1/0x2b0 [ 30.975607] __vm_munmap+0x138/0x3a0 [ 30.975920] __x64_sys_munmap+0x59/0x80 [ 30.976278] do_syscall_64+0x3f/0x90 [ 30.976617] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.977069] [ 30.977217] The buggy address belongs to the object at ffff888019e332b8 [ 30.977217] which belongs to the cache vm_area_struct of size 168 [ 30.978222] The buggy address is located 88 bytes inside of [ 30.978222] freed 168-byte region [ffff888019e332b8, ffff888019e33360) [ 30.979147] [ 30.979294] The buggy address belongs to the physical page: [ 30.979744] page:0000000032a817b7 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19e33 [ 30.980476] memcg:ffff88800da6c101 [ 30.980775] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.981210] page_type: 0xffffffff() [ 30.981511] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.982119] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800da6c101 [ 30.982720] page dumped because: kasan: bad access detected [ 30.983171] [ 30.983319] Memory state around the buggy address: [ 30.983705] ffff888019e33200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 30.984308] ffff888019e33280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 30.984903] >ffff888019e33300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 30.985516] ^ [ 30.985830] ffff888019e33380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.986399] ffff888019e33400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.986961] ================================================================== [ 30.987664] Disabling lock debugging due to kernel taint [ 32.483866] BUG: Bad rss-counter state mm:00000000a739f4fb type:MM_FILEPAGES val:33 [ 32.484573] BUG: Bad rss-counter state mm:00000000a739f4fb type:MM_ANONPAGES val:22 [ 32.859241] BUG: Bad rss-counter state mm:00000000f30bc4e7 type:MM_FILEPAGES val:33 [ 32.859796] BUG: Bad rss-counter state mm:00000000f30bc4e7 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:17031' (ECDSA) to the list of known hosts. 2023/06/21 09:11:46 fuzzer started 2023/06/21 09:11:47 dialing manager at localhost:36067 2023/06/21 09:11:47 checking machine... 2023/06/21 09:11:47 checking revisions... [ 33.500041] kmemleak: Automatic memory scanning thread ended 2023/06/21 09:11:47 testing simple program... [ 33.540050] cgroup: Unknown subsys name 'net' [ 33.586152] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 09:11:46 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=0000000000000001 RDX=1ffff110028d2e6a RSI=ffffffff818d554e RDI=ffff888014697310 RBP=ffff888014697368 RSP=ffff8880146972a0 R8 =0000000000000001 R9 =ffff888014697350 R10=0000000000038001 R11=00000000000240a6 R12=ffff888014697370 R13=ffff888014697358 R14=ffff888014697351 R15=ffff888014697310 RIP=ffffffff811306da RFL=00000216 [----AP-] 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 00007f88c698d900 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=00007f88c5dd75e0 CR3=000000000c9f0000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=1564a54a7f46ecf600000000000ae988 XMM05=01346294349df7cf0000000000133118 XMM06=4fda316b135da52b0000000000131f08 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000000 RCX=ffffea00003ef840 RDX=0000000000000000 RSI=ffff88800fbe1980 RDI=ffffed1001f7c330 RBP=ffffffff813782f8 RSP=ffff888008e37ce0 R8 =0000000000000130 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000128 R12=ffff88800fbe1980 R13=ffff88800844f780 R14=ffffffff813782f8 R15=ffff88800fbe1a00 RIP=ffffffff8180f258 RFL=00000286 [--S--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 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=00007ffef2e95ff8 CR3=000000000caea000 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