[ 30.831883] BUG: Bad rss-counter state mm:0000000074fac9ed type:MM_FILEPAGES val:33 [ 30.833117] BUG: Bad rss-counter state mm:0000000074fac9ed type:MM_ANONPAGES val:22 [ 30.870551] ================================================================== [ 30.871512] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.872460] Read of size 8 at addr ffff88800fd166b0 by task sshd/219 [ 30.873208] [ 30.873424] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.874280] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.875239] Call Trace: [ 30.875557] [ 30.875839] dump_stack_lvl+0x91/0xf0 [ 30.876343] print_report+0xcc/0x620 [ 30.876824] ? __virt_addr_valid+0x102/0x340 [ 30.877373] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.877988] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.878594] kasan_report+0xbe/0xf0 [ 30.879070] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.879689] vma_interval_tree_remove+0xc75/0xec0 [ 30.880291] vma_prepare+0xc54/0x11a0 [ 30.880784] __split_vma+0x5af/0x950 [ 30.881252] ? __pfx___split_vma+0x10/0x10 [ 30.881779] ? find_held_lock+0x2c/0x110 [ 30.882310] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.882867] ? lock_is_held_type+0x9f/0x120 [ 30.883403] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.884010] ? mtree_range_walk+0x632/0x900 [ 30.884582] ? mas_walk+0x5c7/0x7c0 [ 30.885057] do_vmi_munmap+0x1f1/0x2b0 [ 30.885546] mmap_region+0x1f9/0x2660 [ 30.886023] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.886533] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.887240] ? __pfx_lock_acquire+0x10/0x10 [ 30.887770] ? __pfx_mmap_region+0x10/0x10 [ 30.888301] ? security_mmap_addr+0x7d/0xa0 [ 30.888845] ? get_unmapped_area+0x1f5/0x3f0 [ 30.889402] do_mmap+0x854/0xf00 [ 30.889844] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.890338] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.890908] ksys_mmap_pgoff+0x3af/0x500 [ 30.891421] do_syscall_64+0x3f/0x90 [ 30.891902] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.892559] RIP: 0033:0x7f31d5d5ad82 [ 30.893018] 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 [ 30.895144] RSP: 002b:00007fff1189b7b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.896032] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f31d5d5ad82 [ 30.896883] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f31d5194000 [ 30.897720] RBP: 00007f31d5194000 R08: 0000000000000009 R09: 0000000000001000 [ 30.898675] R10: 0000000000000812 R11: 0000000000000206 R12: 000055f8b20e4ec0 [ 30.899525] R13: 00007fff1189b7d0 R14: 00007fff1189b800 R15: 00007fff1189bb60 [ 30.900390] [ 30.900686] [ 30.900918] Allocated by task 210: [ 30.901342] kasan_save_stack+0x22/0x50 [ 30.901833] kasan_set_track+0x25/0x30 [ 30.902325] __kasan_slab_alloc+0x59/0x70 [ 30.902838] kmem_cache_alloc+0x16b/0x370 [ 30.903355] vm_area_dup+0x20/0x160 [ 30.903801] __split_vma+0x170/0x950 [ 30.904261] split_vma+0xc6/0x110 [ 30.904716] mprotect_fixup+0x8d2/0xb30 [ 30.905211] do_mprotect_pkey+0x87e/0xd40 [ 30.905729] __x64_sys_mprotect+0x78/0xc0 [ 30.906241] do_syscall_64+0x3f/0x90 [ 30.906716] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.907364] [ 30.907573] Freed by task 210: [ 30.907958] kasan_save_stack+0x22/0x50 [ 30.908457] kasan_set_track+0x25/0x30 [ 30.908944] kasan_save_free_info+0x2b/0x50 [ 30.909476] __kasan_slab_free+0x10a/0x190 [ 30.910013] kmem_cache_free+0x10d/0x4d0 [ 30.910534] rcu_core+0x8c8/0x2860 [ 30.910986] __do_softirq+0x1b7/0x7d4 [ 30.911464] [ 30.911683] Last potentially related work creation: [ 30.912251] kasan_save_stack+0x22/0x50 [ 30.912764] __kasan_record_aux_stack+0x8e/0xa0 [ 30.913336] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.913967] remove_vma+0x139/0x170 [ 30.914415] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.914961] do_vmi_munmap+0x1f1/0x2b0 [ 30.915455] __vm_munmap+0x138/0x3a0 [ 30.915930] __x64_sys_munmap+0x59/0x80 [ 30.916425] do_syscall_64+0x3f/0x90 [ 30.916894] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.917535] [ 30.917744] The buggy address belongs to the object at ffff88800fd16658 [ 30.917744] which belongs to the cache vm_area_struct of size 168 [ 30.919192] The buggy address is located 88 bytes inside of [ 30.919192] freed 168-byte region [ffff88800fd16658, ffff88800fd16700) [ 30.920590] [ 30.920801] The buggy address belongs to the physical page: [ 30.921450] page:0000000047298f33 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfd16 [ 30.922522] memcg:ffff88801470d901 [ 30.922939] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.923575] page_type: 0xffffffff() [ 30.924018] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.924967] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801470d901 [ 30.925873] page dumped because: kasan: bad access detected [ 30.926533] [ 30.926745] Memory state around the buggy address: [ 30.927324] ffff88800fd16580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.928167] ffff88800fd16600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.929022] >ffff88800fd16680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.929860] ^ [ 30.930428] ffff88800fd16700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 30.931263] ffff88800fd16780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 30.932092] ================================================================== [ 30.933256] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.204270] BUG: Bad rss-counter state mm:00000000f852e09e type:MM_FILEPAGES val:33 [ 33.206265] BUG: Bad rss-counter state mm:00000000f852e09e type:MM_ANONPAGES val:22 [ 33.789998] BUG: Bad rss-counter state mm:000000005bb0ed42 type:MM_FILEPAGES val:33 [ 33.791202] BUG: Bad rss-counter state mm:000000005bb0ed42 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:16586' (ECDSA) to the list of known hosts. 2023/06/20 20:54:33 fuzzer started 2023/06/20 20:54:33 dialing manager at localhost:36067 2023/06/20 20:54:33 checking machine... 2023/06/20 20:54:33 checking revisions... [ 34.444065] kmemleak: Automatic memory scanning thread ended 2023/06/20 20:54:33 testing simple program... [ 34.495121] cgroup: Unknown subsys name 'net' [ 34.558158] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 20:54:33 Registers: info registers vcpu 0 RAX=0000000000000007 RBX=ffff88800fd98000 RCX=ffffffff83697cc3 RDX=0000000000000000 RSI=000000000001a000 RDI=0000000000000001 RBP=0000000000000001 RSP=ffff8880166f78d8 R8 =0000000000000000 R9 =ffffed1001fb304e R10=ffff88800fd98277 R11=0000000000000000 R12=0000000000000041 R13=000000000001a000 R14=ffffffff818be530 R15=0000000000000000 RIP=ffffffff814c0348 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 00007fe63d23a900 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=00007fffd29fe000 CR3=000000000e5f8000 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=000000006c401271 RBX=0000000089bc1dcf RCX=ffff88806cf09ba0 RDX=0000000000000007 RSI=0000000000000008 RDI=000000004f6d1e18 RBP=0000000000000000 RSP=ffff88806cf09b20 R8 =00000000f0bc339c R9 =ffff88806cf09a90 R10=0000000000038001 R11=0000000000000000 R12=0000000000000000 R13=0000000000000000 R14=ffff88806cf09b88 R15=0000000000000007 RIP=ffffffff8227046d RFL=00000a17 [-O--APC] 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=00007ff3cec825b0 CR3=000000000eb1a000 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=6f0197ea2514459d95478c4767883788 XMM02=ec2efd57dc4c00df000000000011a5e0 XMM03=eee1e0097a19130d000000000011a6b0 XMM04=bef0d96abe05557e00000000000ae988 XMM05=dfcdbad4f1609c370000000000131368 XMM06=f1a5d32d487fd8550000000000130540 XMM07=e042d86d42eb936e0000000000121778 XMM08=eee1e0097a19130d000000000011a6b0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000