syzkaller login: [ 38.851077] BUG: Bad rss-counter state mm:000000002ecae3e9 type:MM_FILEPAGES val:33 [ 38.852263] BUG: Bad rss-counter state mm:000000002ecae3e9 type:MM_ANONPAGES val:22 [ 38.892156] ================================================================== [ 38.893383] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.894724] Read of size 8 at addr ffff88800d5a24e0 by task sshd/220 [ 38.895815] [ 38.896074] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.897245] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.898353] Call Trace: [ 38.898764] [ 38.899069] dump_stack_lvl+0x91/0xf0 [ 38.899612] print_report+0xcc/0x620 [ 38.900186] ? __virt_addr_valid+0x102/0x340 [ 38.900742] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.901463] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.902072] kasan_report+0xbe/0xf0 [ 38.902575] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.903197] vma_interval_tree_remove+0xc75/0xec0 [ 38.903954] vma_prepare+0xc54/0x11a0 [ 38.904434] __split_vma+0x5af/0x950 [ 38.905030] ? __pfx___split_vma+0x10/0x10 [ 38.905637] ? find_held_lock+0x2c/0x110 [ 38.906159] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.906881] ? lock_is_held_type+0x9f/0x120 [ 38.907487] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.908211] ? mtree_range_walk+0x632/0x900 [ 38.908803] ? mas_walk+0x5c7/0x7c0 [ 38.909283] do_vmi_munmap+0x1f1/0x2b0 [ 38.909772] mmap_region+0x1f9/0x2660 [ 38.910254] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.910797] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.911508] ? __pfx_lock_acquire+0x10/0x10 [ 38.912038] ? __pfx_mmap_region+0x10/0x10 [ 38.912562] ? security_mmap_addr+0x7d/0xa0 [ 38.913087] ? get_unmapped_area+0x1f5/0x3f0 [ 38.913632] do_mmap+0x854/0xf00 [ 38.914068] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.914597] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.915161] ksys_mmap_pgoff+0x3af/0x500 [ 38.915660] do_syscall_64+0x3f/0x90 [ 38.916136] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.916786] RIP: 0033:0x7f04b97ddd82 [ 38.917236] 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 [ 38.919398] RSP: 002b:00007fff83f92218 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.920301] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f04b97ddd82 [ 38.921154] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f04b8c17000 [ 38.922015] RBP: 00007f04b8c17000 R08: 0000000000000009 R09: 0000000000001000 [ 38.922893] R10: 0000000000000812 R11: 0000000000000206 R12: 0000563c4f2a6ec0 [ 38.923736] R13: 00007fff83f92230 R14: 00007fff83f92260 R15: 00007fff83f925c0 [ 38.924590] [ 38.924881] [ 38.925097] Allocated by task 213: [ 38.925527] kasan_save_stack+0x22/0x50 [ 38.926030] kasan_set_track+0x25/0x30 [ 38.926556] __kasan_slab_alloc+0x59/0x70 [ 38.927081] kmem_cache_alloc+0x16b/0x370 [ 38.927595] vm_area_dup+0x20/0x160 [ 38.928045] __split_vma+0x170/0x950 [ 38.928505] split_vma+0xc6/0x110 [ 38.928942] mprotect_fixup+0x8d2/0xb30 [ 38.929443] do_mprotect_pkey+0x87e/0xd40 [ 38.929960] __x64_sys_mprotect+0x78/0xc0 [ 38.930509] do_syscall_64+0x3f/0x90 [ 38.930983] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.931620] [ 38.931835] Freed by task 213: [ 38.932231] kasan_save_stack+0x22/0x50 [ 38.932738] kasan_set_track+0x25/0x30 [ 38.933232] kasan_save_free_info+0x2b/0x50 [ 38.933763] __kasan_slab_free+0x10a/0x190 [ 38.934297] kmem_cache_free+0x10d/0x4d0 [ 38.934842] rcu_core+0x8c8/0x2860 [ 38.935292] __do_softirq+0x1b7/0x7d4 [ 38.935814] [ 38.936039] Last potentially related work creation: [ 38.936617] kasan_save_stack+0x22/0x50 [ 38.937121] __kasan_record_aux_stack+0x8e/0xa0 [ 38.937693] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.938334] remove_vma+0x139/0x170 [ 38.938821] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.939374] do_vmi_munmap+0x1f1/0x2b0 [ 38.939853] __vm_munmap+0x138/0x3a0 [ 38.940325] __x64_sys_munmap+0x59/0x80 [ 38.940817] do_syscall_64+0x3f/0x90 [ 38.941290] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.941929] [ 38.942142] Second to last potentially related work creation: [ 38.942869] kasan_save_stack+0x22/0x50 [ 38.943368] __kasan_record_aux_stack+0x8e/0xa0 [ 38.943937] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.944580] remove_vma+0x139/0x170 [ 38.945023] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.945573] do_vmi_munmap+0x1f1/0x2b0 [ 38.946059] mmap_region+0x1f9/0x2660 [ 38.946561] do_mmap+0x854/0xf00 [ 38.946988] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.947480] ksys_mmap_pgoff+0x3af/0x500 [ 38.947977] do_syscall_64+0x3f/0x90 [ 38.948450] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.949094] [ 38.949310] The buggy address belongs to the object at ffff88800d5a2488 [ 38.949310] which belongs to the cache vm_area_struct of size 168 [ 38.950792] The buggy address is located 88 bytes inside of [ 38.950792] freed 168-byte region [ffff88800d5a2488, ffff88800d5a2530) [ 38.952191] [ 38.952405] The buggy address belongs to the physical page: [ 38.953065] page:000000005e7cd5bc refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd5a2 [ 38.954172] memcg:ffff88800d544a01 [ 38.954643] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.955335] page_type: 0xffffffff() [ 38.955787] raw: 0100000000000200 ffff8880087a0c80 ffffea0000372640 dead000000000003 [ 38.956729] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d544a01 [ 38.957690] page dumped because: kasan: bad access detected [ 38.958381] [ 38.958627] Memory state around the buggy address: [ 38.959234] ffff88800d5a2380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.960130] ffff88800d5a2400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 38.961000] >ffff88800d5a2480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.961857] ^ [ 38.962647] ffff88800d5a2500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 [ 38.963492] ffff88800d5a2580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.964339] ================================================================== [ 38.965257] Disabling lock debugging due to kernel taint [ 41.706595] BUG: Bad rss-counter state mm:00000000269c39a6 type:MM_FILEPAGES val:33 [ 41.707599] BUG: Bad rss-counter state mm:00000000269c39a6 type:MM_ANONPAGES val:22 [ 42.172817] BUG: Bad rss-counter state mm:00000000e120bb4d type:MM_FILEPAGES val:33 [ 42.174206] BUG: Bad rss-counter state mm:00000000e120bb4d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:58545' (ECDSA) to the list of known hosts. 2023/06/21 02:39:03 fuzzer started 2023/06/21 02:39:04 dialing manager at localhost:36067 2023/06/21 02:39:04 checking machine... 2023/06/21 02:39:04 checking revisions... [ 42.900581] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:39:04 testing simple program... [ 42.962911] cgroup: Unknown subsys name 'net' [ 43.047736] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:39:03 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c04000 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 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 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=00007febe4880000 CR3=000000000df52000 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=2033303a39333a3230203132206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033303a39333a3230203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff8608a55b RBX=0000000000000002 RCX=ffffffff8608a556 RDX=0000000000000002 RSI=0000000000000003 RDI=ffffffff85d899f8 RBP=ffff88806cf09ac8 RSP=ffff88806cf099b0 R8 =ffffffff8608a556 R9 =ffff88806cf09ab0 R10=0000000000038001 R11=0000000000003c0d R12=ffff88806cf09ad0 R13=ffff88806cf09ab8 R14=ffff88806cf09ab1 R15=ffff88806cf09a70 RIP=ffffffff81130a72 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 00007fb7e20de900 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=00007fb7e20a3008 CR3=000000001bfb8000 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=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000