syzkaller login: [ 31.677954] BUG: Bad rss-counter state mm:00000000bb6cf0db type:MM_FILEPAGES val:33 [ 31.679551] BUG: Bad rss-counter state mm:00000000bb6cf0db type:MM_ANONPAGES val:22 [ 31.838477] ================================================================== [ 31.839476] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.840480] Read of size 8 at addr ffff88800db8ec20 by task sshd/220 [ 31.841436] [ 31.841675] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.842592] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.843660] Call Trace: [ 31.844003] [ 31.844302] dump_stack_lvl+0x91/0xf0 [ 31.844834] print_report+0xcc/0x620 [ 31.845383] ? __virt_addr_valid+0x102/0x340 [ 31.845980] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.846639] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.847318] kasan_report+0xbe/0xf0 [ 31.847839] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.848509] vma_interval_tree_remove+0xc75/0xec0 [ 31.849207] vma_prepare+0xc54/0x11a0 [ 31.849714] __split_vma+0x5af/0x950 [ 31.850210] ? __pfx___split_vma+0x10/0x10 [ 31.850792] ? find_held_lock+0x2c/0x110 [ 31.851370] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.851978] ? lock_is_held_type+0x9f/0x120 [ 31.852556] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.853257] ? mtree_range_walk+0x632/0x900 [ 31.853856] ? mas_walk+0x5c7/0x7c0 [ 31.854351] do_vmi_munmap+0x1f1/0x2b0 [ 31.854882] mmap_region+0x1f9/0x2660 [ 31.855409] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.855965] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.856733] ? __pfx_lock_acquire+0x10/0x10 [ 31.857318] ? __pfx_mmap_region+0x10/0x10 [ 31.857883] ? security_mmap_addr+0x7d/0xa0 [ 31.858452] ? get_unmapped_area+0x1f5/0x3f0 [ 31.859028] do_mmap+0x854/0xf00 [ 31.859491] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.860019] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.860625] ksys_mmap_pgoff+0x3af/0x500 [ 31.861199] do_syscall_64+0x3f/0x90 [ 31.861710] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.862406] RIP: 0033:0x7f5cd5d54d82 [ 31.862902] 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 [ 31.865273] RSP: 002b:00007ffd305ffc28 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.866253] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5cd5d54d82 [ 31.867192] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5cd518e000 [ 31.868116] RBP: 00007f5cd518e000 R08: 0000000000000009 R09: 0000000000001000 [ 31.869045] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559477a2e980 [ 31.869985] R13: 00007ffd305ffc40 R14: 00007ffd305ffc70 R15: 00007ffd305fffd0 [ 31.870927] [ 31.871236] [ 31.871466] Allocated by task 213: [ 31.871931] kasan_save_stack+0x22/0x50 [ 31.872478] kasan_set_track+0x25/0x30 [ 31.873041] __kasan_slab_alloc+0x59/0x70 [ 31.873634] kmem_cache_alloc+0x16b/0x370 [ 31.874192] vm_area_dup+0x20/0x160 [ 31.874686] __split_vma+0x170/0x950 [ 31.875185] split_vma+0xc6/0x110 [ 31.875658] mprotect_fixup+0x8d2/0xb30 [ 31.876188] do_mprotect_pkey+0x87e/0xd40 [ 31.876753] __x64_sys_mprotect+0x78/0xc0 [ 31.877328] do_syscall_64+0x3f/0x90 [ 31.877831] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.878518] [ 31.878750] Freed by task 213: [ 31.879181] kasan_save_stack+0x22/0x50 [ 31.879729] kasan_set_track+0x25/0x30 [ 31.880261] kasan_save_free_info+0x2b/0x50 [ 31.880847] __kasan_slab_free+0x10a/0x190 [ 31.881452] kmem_cache_free+0x10d/0x4d0 [ 31.882011] rcu_core+0x8c8/0x2860 [ 31.882492] __do_softirq+0x1b7/0x7d4 [ 31.883005] [ 31.883239] Last potentially related work creation: [ 31.883887] kasan_save_stack+0x22/0x50 [ 31.884437] __kasan_record_aux_stack+0x8e/0xa0 [ 31.885105] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.885791] remove_vma+0x139/0x170 [ 31.886268] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.886865] do_vmi_munmap+0x1f1/0x2b0 [ 31.887396] __vm_munmap+0x138/0x3a0 [ 31.887891] __x64_sys_munmap+0x59/0x80 [ 31.888426] do_syscall_64+0x3f/0x90 [ 31.888932] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.889636] [ 31.889864] The buggy address belongs to the object at ffff88800db8ebc8 [ 31.889864] which belongs to the cache vm_area_struct of size 168 [ 31.891470] The buggy address is located 88 bytes inside of [ 31.891470] freed 168-byte region [ffff88800db8ebc8, ffff88800db8ec70) [ 31.892991] [ 31.893256] The buggy address belongs to the physical page: [ 31.893972] page:0000000052c902f3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdb8e [ 31.895151] memcg:ffff88800ed0ef01 [ 31.895618] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.896300] page_type: 0xffffffff() [ 31.896784] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 31.897823] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ed0ef01 [ 31.898794] page dumped because: kasan: bad access detected [ 31.899507] [ 31.899736] Memory state around the buggy address: [ 31.900352] ffff88800db8eb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.901318] ffff88800db8eb80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 31.902254] >ffff88800db8ec00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 31.903176] ^ [ 31.903738] ffff88800db8ec80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 31.904662] ffff88800db8ed00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 31.905626] ================================================================== [ 31.906665] Disabling lock debugging due to kernel taint [ 33.827698] BUG: Bad rss-counter state mm:00000000b17fabc6 type:MM_FILEPAGES val:33 [ 33.828712] BUG: Bad rss-counter state mm:00000000b17fabc6 type:MM_ANONPAGES val:22 [ 34.282987] BUG: Bad rss-counter state mm:000000009c93d3c9 type:MM_FILEPAGES val:33 [ 34.284005] BUG: Bad rss-counter state mm:000000009c93d3c9 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:65436' (ECDSA) to the list of known hosts. 2023/06/19 21:45:51 fuzzer started 2023/06/19 21:45:51 dialing manager at localhost:44161 2023/06/19 21:45:51 checking machine... 2023/06/19 21:45:51 checking revisions... [ 34.938565] kmemleak: Automatic memory scanning thread ended 2023/06/19 21:45:51 testing simple program... [ 34.984803] cgroup: Unknown subsys name 'net' [ 35.017288] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 21:45:50 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000000 RCX=0000000000000100 RDX=ffffffff8542a6c0 RSI=ffffffff814c84f5 RDI=ffffffff8560b640 RBP=0000000000000000 RSP=ffff88806ce09960 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b5420 R12=ffffffff8560b640 R13=ffffffff814c84f5 R14=ffffffff85652a88 R15=ffff888013999a00 RIP=ffffffff812d862e 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 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=00007f6e09275c80 CR3=00000000166a6000 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=2031353a35343a3132203931206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732031353a35343a3132203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffff88800e0d2200 RCX=1ffffffff0ba7a02 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff81810591 RBP=ffff8880166b7d98 RSP=ffff8880166b7d70 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=00000000000b6996 R12=ffff8880087b63c0 R13=ffffea0000383400 R14=ffffffff81893972 R15=dffffc0000000000 RIP=ffffffff8180995d 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 00007ff63b94b900 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=00007ffe9c7d6000 CR3=0000000016d64000 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