syzkaller login: [ 30.676635] BUG: Bad rss-counter state mm:00000000f9eb5bfb type:MM_FILEPAGES val:33 [ 30.678734] BUG: Bad rss-counter state mm:00000000f9eb5bfb type:MM_ANONPAGES val:22 [ 30.855481] ================================================================== [ 30.856458] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.857477] Read of size 8 at addr ffff8880145be310 by task sshd/219 [ 30.858288] [ 30.858619] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.859531] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.860567] Call Trace: [ 30.860908] [ 30.861214] dump_stack_lvl+0x91/0xf0 [ 30.861761] print_report+0xcc/0x620 [ 30.862276] ? __virt_addr_valid+0x102/0x340 [ 30.862863] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.863517] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.864172] kasan_report+0xbe/0xf0 [ 30.864682] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.865348] vma_interval_tree_remove+0xc75/0xec0 [ 30.866020] vma_prepare+0xc54/0x11a0 [ 30.866555] __split_vma+0x5af/0x950 [ 30.867073] ? __pfx___split_vma+0x10/0x10 [ 30.867651] ? find_held_lock+0x2c/0x110 [ 30.868230] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.868851] ? lock_is_held_type+0x9f/0x120 [ 30.869471] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.870139] ? mtree_range_walk+0x632/0x900 [ 30.870752] ? mas_walk+0x5c7/0x7c0 [ 30.871273] do_vmi_munmap+0x1f1/0x2b0 [ 30.871817] mmap_region+0x1f9/0x2660 [ 30.872349] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.872917] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.873715] ? __pfx_lock_acquire+0x10/0x10 [ 30.874298] ? __pfx_mmap_region+0x10/0x10 [ 30.874884] ? security_mmap_addr+0x7d/0xa0 [ 30.875469] ? get_unmapped_area+0x1f5/0x3f0 [ 30.876067] do_mmap+0x854/0xf00 [ 30.876548] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.877089] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.877722] ksys_mmap_pgoff+0x3af/0x500 [ 30.878272] do_syscall_64+0x3f/0x90 [ 30.878800] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.879512] RIP: 0033:0x7f3ecbe25d82 [ 30.880014] 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 [ 30.882370] RSP: 002b:00007ffff3e3fdd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.883357] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3ecbe25d82 [ 30.884294] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3ecb25f000 [ 30.885227] RBP: 00007f3ecb25f000 R08: 0000000000000009 R09: 0000000000001000 [ 30.886167] R10: 0000000000000812 R11: 0000000000000206 R12: 00005649c1669d90 [ 30.887104] R13: 00007ffff3e3fdf0 R14: 00007ffff3e3fe20 R15: 00007ffff3e40180 [ 30.888057] [ 30.888382] [ 30.888618] Allocated by task 212: [ 30.889088] kasan_save_stack+0x22/0x50 [ 30.889653] kasan_set_track+0x25/0x30 [ 30.890192] __kasan_slab_alloc+0x59/0x70 [ 30.890764] kmem_cache_alloc+0x16b/0x370 [ 30.891336] vm_area_dup+0x20/0x160 [ 30.891833] __split_vma+0x170/0x950 [ 30.892348] split_vma+0xc6/0x110 [ 30.892836] mprotect_fixup+0x8d2/0xb30 [ 30.893387] do_mprotect_pkey+0x87e/0xd40 [ 30.893984] __x64_sys_mprotect+0x78/0xc0 [ 30.894548] do_syscall_64+0x3f/0x90 [ 30.895072] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.895775] [ 30.896011] Freed by task 212: [ 30.896439] kasan_save_stack+0x22/0x50 [ 30.896991] kasan_set_track+0x25/0x30 [ 30.897541] kasan_save_free_info+0x2b/0x50 [ 30.898130] __kasan_slab_free+0x10a/0x190 [ 30.898717] kmem_cache_free+0x10d/0x4d0 [ 30.899276] rcu_core+0x8c8/0x2860 [ 30.899773] __do_softirq+0x1b7/0x7d4 [ 30.900305] [ 30.900544] Last potentially related work creation: [ 30.901184] kasan_save_stack+0x22/0x50 [ 30.901738] __kasan_record_aux_stack+0x8e/0xa0 [ 30.902374] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.903086] remove_vma+0x139/0x170 [ 30.903587] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.904200] do_vmi_munmap+0x1f1/0x2b0 [ 30.904738] __vm_munmap+0x138/0x3a0 [ 30.905254] __x64_sys_munmap+0x59/0x80 [ 30.905827] do_syscall_64+0x3f/0x90 [ 30.906354] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.907063] [ 30.907302] The buggy address belongs to the object at ffff8880145be2b8 [ 30.907302] which belongs to the cache vm_area_struct of size 168 [ 30.908933] The buggy address is located 88 bytes inside of [ 30.908933] freed 168-byte region [ffff8880145be2b8, ffff8880145be360) [ 30.910485] [ 30.910723] The buggy address belongs to the physical page: [ 30.911453] page:00000000d067811c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x145be [ 30.912659] memcg:ffff8880147b9201 [ 30.913127] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.913842] page_type: 0xffffffff() [ 30.914345] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.915363] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880147b9201 [ 30.916365] page dumped because: kasan: bad access detected [ 30.917096] [ 30.917333] Memory state around the buggy address: [ 30.917987] ffff8880145be200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 30.918924] ffff8880145be280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 30.919868] >ffff8880145be300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 30.920810] ^ [ 30.921326] ffff8880145be380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.922270] ffff8880145be400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.923216] ================================================================== [ 30.924278] Disabling lock debugging due to kernel taint [ 33.048253] BUG: Bad rss-counter state mm:00000000a458e868 type:MM_FILEPAGES val:33 [ 33.049234] BUG: Bad rss-counter state mm:00000000a458e868 type:MM_ANONPAGES val:22 [ 33.435626] BUG: Bad rss-counter state mm:0000000021413a7a type:MM_FILEPAGES val:33 [ 33.436604] BUG: Bad rss-counter state mm:0000000021413a7a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:15093' (ECDSA) to the list of known hosts. 2023/06/21 05:40:05 fuzzer started 2023/06/21 05:40:05 dialing manager at localhost:36067 2023/06/21 05:40:05 checking machine... 2023/06/21 05:40:05 checking revisions... [ 34.149486] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:40:05 testing simple program... [ 34.200926] cgroup: Unknown subsys name 'net' [ 34.240281] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:40:05 Registers: info registers vcpu 0 RAX=000000000008a84f RBX=0000000000000001 RCX=ffffffff83636215 RDX=000000000008a84f RSI=0000000000026362 RDI=ffffffff8658277c RBP=ffff888015e4f460 RSP=ffff888015e4f398 R8 =0000000000000000 R9 =ffff888015e4f448 R10=0000000000038001 R11=000000000008a84f R12=ffff888015e4f468 R13=ffff888015e4f450 R14=ffff888015e4f449 R15=ffff888015e4f408 RIP=ffffffff81130837 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 00007f1668e3d700 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=00007fd53bb15618 CR3=000000000f298000 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=00000000000000000000000000000000 XMM01=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3932325b646873732034303a3034 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320343035 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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=00007f36f6b4f510 CR3=000000000d572000 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=26c28aef7e3ffaa87449d2519bf8da06 XMM02=2c67c8bc2e329bc3000000000011ada0 XMM03=fb795ef6d65770560000000000122010 XMM04=5025d6e49ff7536000000000000ae988 XMM05=19e9129bd510f2350000000000132108 XMM06=f3d273934a7dbe1d0000000000130f70 XMM07=e042d86d42eb936e0000000000122290 XMM08=915bd5908cdb62c3000000000011ae00 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000