syzkaller login: [ 30.189070] BUG: Bad rss-counter state mm:00000000ddba6eb8 type:MM_FILEPAGES val:33 [ 30.190483] BUG: Bad rss-counter state mm:00000000ddba6eb8 type:MM_ANONPAGES val:22 [ 30.326318] ================================================================== [ 30.327382] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.328494] Read of size 8 at addr ffff88800eadeb38 by task sshd/219 [ 30.329602] [ 30.329889] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.330881] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.331890] Call Trace: [ 30.332205] [ 30.332490] dump_stack_lvl+0x91/0xf0 [ 30.332985] print_report+0xcc/0x620 [ 30.333479] ? __virt_addr_valid+0x102/0x340 [ 30.334038] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.334652] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.335274] kasan_report+0xbe/0xf0 [ 30.335750] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.336380] vma_interval_tree_remove+0xc75/0xec0 [ 30.336983] vma_prepare+0xc54/0x11a0 [ 30.337469] __split_vma+0x5af/0x950 [ 30.337953] ? __pfx___split_vma+0x10/0x10 [ 30.338497] ? find_held_lock+0x2c/0x110 [ 30.339031] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.339596] ? lock_is_held_type+0x9f/0x120 [ 30.340128] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.340737] ? mtree_range_walk+0x632/0x900 [ 30.341283] ? mas_walk+0x5c7/0x7c0 [ 30.341765] do_vmi_munmap+0x1f1/0x2b0 [ 30.342276] mmap_region+0x1f9/0x2660 [ 30.342762] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.343279] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.343997] ? __pfx_lock_acquire+0x10/0x10 [ 30.344528] ? __pfx_mmap_region+0x10/0x10 [ 30.345056] ? security_mmap_addr+0x7d/0xa0 [ 30.345590] ? get_unmapped_area+0x1f5/0x3f0 [ 30.346151] do_mmap+0x854/0xf00 [ 30.346589] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.347088] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.347648] ksys_mmap_pgoff+0x3af/0x500 [ 30.348160] do_syscall_64+0x3f/0x90 [ 30.348643] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.349291] RIP: 0033:0x7f740696bd82 [ 30.349752] 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 [ 30.351888] RSP: 002b:00007fff11010348 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.352786] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f740696bd82 [ 30.353627] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f7405da5000 [ 30.354491] RBP: 00007f7405da5000 R08: 0000000000000009 R09: 0000000000001000 [ 30.355352] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559d3c91dec0 [ 30.356195] R13: 00007fff11010360 R14: 00007fff11010390 R15: 00007fff110106f0 [ 30.357064] [ 30.357360] [ 30.357576] Allocated by task 212: [ 30.358012] kasan_save_stack+0x22/0x50 [ 30.358518] kasan_set_track+0x25/0x30 [ 30.359015] __kasan_slab_alloc+0x59/0x70 [ 30.359539] kmem_cache_alloc+0x16b/0x370 [ 30.360055] vm_area_dup+0x20/0x160 [ 30.360507] __split_vma+0x170/0x950 [ 30.360971] split_vma+0xc6/0x110 [ 30.361412] mprotect_fixup+0x8d2/0xb30 [ 30.361925] do_mprotect_pkey+0x87e/0xd40 [ 30.362444] __x64_sys_mprotect+0x78/0xc0 [ 30.362966] do_syscall_64+0x3f/0x90 [ 30.363449] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.364088] [ 30.364310] Freed by task 19: [ 30.364692] kasan_save_stack+0x22/0x50 [ 30.365198] kasan_set_track+0x25/0x30 [ 30.365688] kasan_save_free_info+0x2b/0x50 [ 30.366239] __kasan_slab_free+0x10a/0x190 [ 30.366773] kmem_cache_free+0x10d/0x4d0 [ 30.367281] rcu_core+0x8c8/0x2860 [ 30.367734] __do_softirq+0x1b7/0x7d4 [ 30.368213] [ 30.368428] Last potentially related work creation: [ 30.369017] kasan_save_stack+0x22/0x50 [ 30.369523] __kasan_record_aux_stack+0x8e/0xa0 [ 30.370105] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.370810] remove_vma+0x139/0x170 [ 30.371262] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.371825] do_vmi_munmap+0x1f1/0x2b0 [ 30.372313] __vm_munmap+0x138/0x3a0 [ 30.372789] __x64_sys_munmap+0x59/0x80 [ 30.373288] do_syscall_64+0x3f/0x90 [ 30.373761] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.374412] [ 30.374630] Second to last potentially related work creation: [ 30.375315] kasan_save_stack+0x22/0x50 [ 30.375823] __kasan_record_aux_stack+0x8e/0xa0 [ 30.376402] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.377050] remove_vma+0x139/0x170 [ 30.377505] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.378095] do_vmi_munmap+0x1f1/0x2b0 [ 30.378583] mmap_region+0x1f9/0x2660 [ 30.379064] do_mmap+0x854/0xf00 [ 30.379510] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.380002] ksys_mmap_pgoff+0x3af/0x500 [ 30.380507] do_syscall_64+0x3f/0x90 [ 30.380982] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.381624] [ 30.381853] The buggy address belongs to the object at ffff88800eadeae0 [ 30.381853] which belongs to the cache vm_area_struct of size 168 [ 30.383331] The buggy address is located 88 bytes inside of [ 30.383331] freed 168-byte region [ffff88800eadeae0, ffff88800eadeb88) [ 30.384731] [ 30.384949] The buggy address belongs to the physical page: [ 30.385610] page:00000000b83385ee refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeade [ 30.386729] memcg:ffff888013fb0901 [ 30.387162] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.387818] page_type: 0xffffffff() [ 30.388284] raw: 0100000000000200 ffff8880087a0c80 ffffea00003bdc40 dead000000000004 [ 30.389214] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888013fb0901 [ 30.390140] page dumped because: kasan: bad access detected [ 30.390804] [ 30.391021] Memory state around the buggy address: [ 30.391599] ffff88800eadea00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.392458] ffff88800eadea80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 30.393315] >ffff88800eadeb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.394211] ^ [ 30.394825] ffff88800eadeb80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 30.395681] ffff88800eadec00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 30.396535] ================================================================== [ 30.397446] Disabling lock debugging due to kernel taint [ 32.606200] BUG: Bad rss-counter state mm:0000000022a7c0ee type:MM_FILEPAGES val:33 [ 32.607167] BUG: Bad rss-counter state mm:0000000022a7c0ee type:MM_ANONPAGES val:22 [ 33.212926] BUG: Bad rss-counter state mm:0000000042ba36f4 type:MM_FILEPAGES val:33 [ 33.214154] BUG: Bad rss-counter state mm:0000000042ba36f4 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:43995' (ECDSA) to the list of known hosts. 2023/06/20 17:31:03 fuzzer started 2023/06/20 17:31:03 dialing manager at localhost:36067 2023/06/20 17:31:03 checking machine... 2023/06/20 17:31:03 checking revisions... [ 33.844543] kmemleak: Automatic memory scanning thread ended 2023/06/20 17:31:03 testing simple program... [ 33.887654] cgroup: Unknown subsys name 'net' [ 33.933179] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:31:02 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=00007ffe3a42ec78 CR3=000000000eb4e000 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=2032303a31333a3731203032206e754a XMM01=6964206465766965636552203a5d3832 XMM02=6f63736964203a31313a383337313420 XMM03=7266207463656e6e6f63736964206465 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732032303a31333a3731203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=0000000000000001 RCX=ffffffff863b2ee2 RDX=1ffff110028f7e8d RSI=1ffff110028f7e8c RDI=1ffff110028f7e8c RBP=ffff8880147bf460 RSP=ffff8880147bf398 R8 =ffffffff863b2ee6 R9 =ffff8880147bf448 R10=0000000000038001 R11=000000000008a84f R12=ffff8880147bf468 R13=ffff8880147bf450 R14=ffff8880147bfcb0 R15=ffff8880147bf408 RIP=ffffffff811310ce 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 00007f7042cc7900 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=00007f70420e5d90 CR3=00000000145f8000 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=93d8706236fdf6801d40e8bbfe45f91f XMM02=000000000011ad08d59e07bde36eea69 XMM03=000000000011ae30ec2efd57dc4c00df XMM04=0c2fc628ed9a693d00000000000ae988 XMM05=cf6d53c8425956030000000000134b90 XMM06=806171799158d9670000000000133980 XMM07=fb795ef6d657705600000000001228d0 XMM08=2c67c8bc2e329bc3000000000011ae30 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000