syzkaller login: [ 37.781874] BUG: Bad rss-counter state mm:000000000b16a9e8 type:MM_FILEPAGES val:33 [ 37.783337] BUG: Bad rss-counter state mm:000000000b16a9e8 type:MM_ANONPAGES val:22 [ 37.820245] ================================================================== [ 37.821356] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 37.822402] Read of size 8 at addr ffff88800d5af5c8 by task sshd/219 [ 37.823250] [ 37.823491] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 37.824444] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 37.825533] Call Trace: [ 37.825886] [ 37.826206] dump_stack_lvl+0x91/0xf0 [ 37.826751] print_report+0xcc/0x620 [ 37.827301] ? __virt_addr_valid+0x102/0x340 [ 37.827916] ? vma_interval_tree_remove+0xc75/0xec0 [ 37.828606] ? vma_interval_tree_remove+0xc75/0xec0 [ 37.829323] kasan_report+0xbe/0xf0 [ 37.829854] ? vma_interval_tree_remove+0xc75/0xec0 [ 37.830509] vma_interval_tree_remove+0xc75/0xec0 [ 37.831124] vma_prepare+0xc54/0x11a0 [ 37.831613] __split_vma+0x5af/0x950 [ 37.832100] ? __pfx___split_vma+0x10/0x10 [ 37.832638] ? find_held_lock+0x2c/0x110 [ 37.833171] do_vmi_align_munmap+0x2ba/0x11f0 [ 37.833761] ? lock_is_held_type+0x9f/0x120 [ 37.834320] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 37.834934] ? mtree_range_walk+0x632/0x900 [ 37.835498] ? mas_walk+0x5c7/0x7c0 [ 37.835984] do_vmi_munmap+0x1f1/0x2b0 [ 37.836489] mmap_region+0x1f9/0x2660 [ 37.836981] ? vm_mmap_pgoff+0x15c/0x3a0 [ 37.837529] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 37.838256] ? __pfx_lock_acquire+0x10/0x10 [ 37.838797] ? __pfx_mmap_region+0x10/0x10 [ 37.839343] ? security_mmap_addr+0x7d/0xa0 [ 37.839888] ? get_unmapped_area+0x1f5/0x3f0 [ 37.840455] do_mmap+0x854/0xf00 [ 37.840906] vm_mmap_pgoff+0x1a6/0x3a0 [ 37.841422] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 37.841998] ksys_mmap_pgoff+0x3af/0x500 [ 37.842517] do_syscall_64+0x3f/0x90 [ 37.843006] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 37.843672] RIP: 0033:0x7fbeb815fd82 [ 37.844143] 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 [ 37.846307] RSP: 002b:00007ffd010d9c48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 37.847232] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fbeb815fd82 [ 37.848275] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fbeb7599000 [ 37.849124] RBP: 00007fbeb7599000 R08: 0000000000000009 R09: 0000000000001000 [ 37.849985] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559676e33ec0 [ 37.850861] R13: 00007ffd010d9c60 R14: 00007ffd010d9c90 R15: 00007ffd010d9ff0 [ 37.851731] [ 37.852029] [ 37.852242] Allocated by task 212: [ 37.852674] kasan_save_stack+0x22/0x50 [ 37.853182] kasan_set_track+0x25/0x30 [ 37.853697] __kasan_slab_alloc+0x59/0x70 [ 37.854231] kmem_cache_alloc+0x16b/0x370 [ 37.854743] vm_area_dup+0x20/0x160 [ 37.855205] __split_vma+0x170/0x950 [ 37.855678] split_vma+0xc6/0x110 [ 37.856123] mprotect_fixup+0x8d2/0xb30 [ 37.856631] do_mprotect_pkey+0x87e/0xd40 [ 37.857157] __x64_sys_mprotect+0x78/0xc0 [ 37.857701] do_syscall_64+0x3f/0x90 [ 37.858190] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 37.858830] [ 37.859047] Freed by task 212: [ 37.859444] kasan_save_stack+0x22/0x50 [ 37.859976] kasan_set_track+0x25/0x30 [ 37.860470] kasan_save_free_info+0x2b/0x50 [ 37.861016] __kasan_slab_free+0x10a/0x190 [ 37.861553] kmem_cache_free+0x10d/0x4d0 [ 37.862068] rcu_core+0x8c8/0x2860 [ 37.862516] __do_softirq+0x1b7/0x7d4 [ 37.862987] [ 37.863199] Last potentially related work creation: [ 37.863779] kasan_save_stack+0x22/0x50 [ 37.864276] __kasan_record_aux_stack+0x8e/0xa0 [ 37.864859] __call_rcu_common.constprop.0+0x6a/0xb90 [ 37.865515] remove_vma+0x139/0x170 [ 37.865986] do_vmi_align_munmap+0xd4a/0x11f0 [ 37.866541] do_vmi_munmap+0x1f1/0x2b0 [ 37.867056] __vm_munmap+0x138/0x3a0 [ 37.867526] __x64_sys_munmap+0x59/0x80 [ 37.868028] do_syscall_64+0x3f/0x90 [ 37.868512] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 37.869165] [ 37.869403] The buggy address belongs to the object at ffff88800d5af570 [ 37.869403] which belongs to the cache vm_area_struct of size 168 [ 37.870880] The buggy address is located 88 bytes inside of [ 37.870880] freed 168-byte region [ffff88800d5af570, ffff88800d5af618) [ 37.872287] [ 37.872503] The buggy address belongs to the physical page: [ 37.873148] page:000000005cda477f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd5af [ 37.874222] memcg:ffff88800c5fc501 [ 37.874643] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 37.875335] page_type: 0xffffffff() [ 37.875776] raw: 0100000000000200 ffff88800879fc80 ffffea0000367040 dead000000000005 [ 37.876675] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c5fc501 [ 37.877582] page dumped because: kasan: bad access detected [ 37.878229] [ 37.878442] Memory state around the buggy address: [ 37.879009] ffff88800d5af480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 37.879855] ffff88800d5af500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 37.880699] >ffff88800d5af580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.881544] ^ [ 37.882194] ffff88800d5af600: fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 [ 37.883037] ffff88800d5af680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 37.883866] ================================================================== [ 37.885093] Disabling lock debugging due to kernel taint [ 39.948382] BUG: Bad rss-counter state mm:00000000dd3073f9 type:MM_FILEPAGES val:33 [ 39.949627] BUG: Bad rss-counter state mm:00000000dd3073f9 type:MM_ANONPAGES val:22 [ 40.485258] BUG: Bad rss-counter state mm:00000000e3e53cf2 type:MM_FILEPAGES val:33 [ 40.486491] BUG: Bad rss-counter state mm:00000000e3e53cf2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:46502' (ECDSA) to the list of known hosts. 2023/06/20 09:39:56 fuzzer started 2023/06/20 09:39:56 dialing manager at localhost:44161 2023/06/20 09:39:56 checking machine... 2023/06/20 09:39:56 checking revisions... [ 41.197452] kmemleak: Automatic memory scanning thread ended 2023/06/20 09:39:56 testing simple program... [ 41.250639] cgroup: Unknown subsys name 'net' [ 41.309911] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 09:39:54 Registers: info registers vcpu 0 RAX=1ffff11001cd633d RBX=dffffc0000000000 RCX=ffffffff812e00e5 RDX=1ffff11001279081 RSI=ffffffff87b86f80 RDI=ffff8880093c8400 RBP=ffff8880093c83f8 RSP=ffff88806ce09db8 R8 =0000000000000001 R9 =ffffed100d9c13af R10=0000000000000003 R11=00000000000b6996 R12=ffff88800e6b19e8 R13=fffffbfff0f70df0 R14=0000000000000000 R15=ffffffff87b86f80 RIP=ffffffff844cc473 RFL=00000046 [---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 00007f6ad5850900 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=00007f6ad5e07618 CR3=000000000d9dc000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c58400 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007fbdf0c04000 CR3=0000000014698000 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=2036353a39333a3930203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732035353a39333a3930203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000