syzkaller login: [ 23.679620] BUG: Bad rss-counter state mm:00000000778a069a type:MM_FILEPAGES val:33 [ 23.680642] BUG: Bad rss-counter state mm:00000000778a069a type:MM_ANONPAGES val:22 [ 23.848739] ================================================================== [ 23.849653] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.850586] Read of size 8 at addr ffff88800e6fd058 by task sshd/219 [ 23.851518] [ 23.851755] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.852599] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.853560] Call Trace: [ 23.853892] [ 23.854174] dump_stack_lvl+0x91/0xf0 [ 23.854670] print_report+0xcc/0x620 [ 23.855150] ? __virt_addr_valid+0x102/0x340 [ 23.855720] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.856329] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.856933] kasan_report+0xbe/0xf0 [ 23.857405] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.858018] vma_interval_tree_remove+0xc75/0xec0 [ 23.858613] vma_prepare+0xc54/0x11a0 [ 23.859087] __split_vma+0x5af/0x950 [ 23.859569] ? __pfx___split_vma+0x10/0x10 [ 23.860096] ? find_held_lock+0x2c/0x110 [ 23.860617] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.861184] ? lock_is_held_type+0x9f/0x120 [ 23.861721] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.862325] ? mtree_range_walk+0x632/0x900 [ 23.862876] ? mas_walk+0x5c7/0x7c0 [ 23.863352] do_vmi_munmap+0x1f1/0x2b0 [ 23.863835] mmap_region+0x1f9/0x2660 [ 23.864310] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.864813] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.865523] ? __pfx_lock_acquire+0x10/0x10 [ 23.866046] ? __pfx_mmap_region+0x10/0x10 [ 23.866574] ? security_mmap_addr+0x7d/0xa0 [ 23.867103] ? get_unmapped_area+0x1f5/0x3f0 [ 23.867663] do_mmap+0x854/0xf00 [ 23.868102] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.868590] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.869148] ksys_mmap_pgoff+0x3af/0x500 [ 23.869649] do_syscall_64+0x3f/0x90 [ 23.870124] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.870774] RIP: 0033:0x7f8880fa6d82 [ 23.871237] 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 [ 23.873338] RSP: 002b:00007fffa41005d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.874231] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f8880fa6d82 [ 23.875070] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f88803e0000 [ 23.875923] RBP: 00007f88803e0000 R08: 0000000000000009 R09: 0000000000001000 [ 23.876756] R10: 0000000000000812 R11: 0000000000000206 R12: 000055e0722cdf70 [ 23.877596] R13: 00007fffa41005f0 R14: 00007fffa4100620 R15: 00007fffa4100980 [ 23.878449] [ 23.878736] [ 23.878948] Allocated by task 212: [ 23.879382] kasan_save_stack+0x22/0x50 [ 23.879882] kasan_set_track+0x25/0x30 [ 23.880373] __kasan_slab_alloc+0x59/0x70 [ 23.880884] kmem_cache_alloc+0x16b/0x370 [ 23.881399] vm_area_dup+0x20/0x160 [ 23.881848] __split_vma+0x170/0x950 [ 23.882318] split_vma+0xc6/0x110 [ 23.882752] mprotect_fixup+0x8d2/0xb30 [ 23.883279] do_mprotect_pkey+0x87e/0xd40 [ 23.883792] __x64_sys_mprotect+0x78/0xc0 [ 23.884307] do_syscall_64+0x3f/0x90 [ 23.884772] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.885412] [ 23.885624] Freed by task 203: [ 23.886010] kasan_save_stack+0x22/0x50 [ 23.886503] kasan_set_track+0x25/0x30 [ 23.886991] kasan_save_free_info+0x2b/0x50 [ 23.887525] __kasan_slab_free+0x10a/0x190 [ 23.888052] kmem_cache_free+0x10d/0x4d0 [ 23.888553] rcu_core+0x8c8/0x2860 [ 23.889013] __do_softirq+0x1b7/0x7d4 [ 23.889523] [ 23.889737] Last potentially related work creation: [ 23.890314] kasan_save_stack+0x22/0x50 [ 23.890817] __kasan_record_aux_stack+0x8e/0xa0 [ 23.891403] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.892044] remove_vma+0x139/0x170 [ 23.892578] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.893131] do_vmi_munmap+0x1f1/0x2b0 [ 23.893606] __vm_munmap+0x138/0x3a0 [ 23.894072] __x64_sys_munmap+0x59/0x80 [ 23.894561] do_syscall_64+0x3f/0x90 [ 23.895038] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.895688] [ 23.895901] Second to last potentially related work creation: [ 23.896583] kasan_save_stack+0x22/0x50 [ 23.897082] __kasan_record_aux_stack+0x8e/0xa0 [ 23.897642] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.898276] remove_vma+0x139/0x170 [ 23.898722] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.899322] do_vmi_munmap+0x1f1/0x2b0 [ 23.899804] mmap_region+0x1f9/0x2660 [ 23.900278] do_mmap+0x854/0xf00 [ 23.900701] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.901194] ksys_mmap_pgoff+0x3af/0x500 [ 23.901688] do_syscall_64+0x3f/0x90 [ 23.902156] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.902793] [ 23.903015] The buggy address belongs to the object at ffff88800e6fd000 [ 23.903015] which belongs to the cache vm_area_struct of size 168 [ 23.904488] The buggy address is located 88 bytes inside of [ 23.904488] freed 168-byte region [ffff88800e6fd000, ffff88800e6fd0a8) [ 23.905889] [ 23.906109] The buggy address belongs to the physical page: [ 23.906768] page:00000000afa83640 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe6fd [ 23.907839] memcg:ffff88800e62fc01 [ 23.908262] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 23.908956] page_type: 0xffffffff() [ 23.909401] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 23.910311] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e62fc01 [ 23.911210] page dumped because: kasan: bad access detected [ 23.911862] [ 23.912077] Memory state around the buggy address: [ 23.912645] ffff88800e6fcf00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 23.913495] ffff88800e6fcf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 23.914338] >ffff88800e6fd000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.915173] ^ [ 23.915911] ffff88800e6fd080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 23.916762] ffff88800e6fd100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.917601] ================================================================== [ 23.918625] Disabling lock debugging due to kernel taint [ 26.193149] BUG: Bad rss-counter state mm:0000000080525348 type:MM_FILEPAGES val:33 [ 26.194324] BUG: Bad rss-counter state mm:0000000080525348 type:MM_ANONPAGES val:22 [ 26.606034] BUG: Bad rss-counter state mm:0000000070e0faa4 type:MM_FILEPAGES val:33 [ 26.607247] BUG: Bad rss-counter state mm:0000000070e0faa4 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:25145' (ECDSA) to the list of known hosts. 2023/06/20 12:40:28 fuzzer started 2023/06/20 12:40:28 dialing manager at localhost:36067 2023/06/20 12:40:28 checking machine... 2023/06/20 12:40:28 checking revisions... [ 27.316833] kmemleak: Automatic memory scanning thread ended 2023/06/20 12:40:29 testing simple program... [ 27.360293] cgroup: Unknown subsys name 'net' [ 27.414695] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:40:28 Registers: info registers vcpu 0 RAX=ffffffff8118ddc3 RBX=0000000000000002 RCX=0000000000000002 RDX=ffff88806ce09f01 RSI=ffff88806ce09fe0 RDI=ffff88806ce09fe0 RBP=ffff88806ce09ac8 RSP=ffff88806ce099f8 R8 =ffffffff864b6d22 R9 =ffff88806ce09ab0 R10=0000000000038001 R11=00000000000b5d59 R12=ffff88806ce09ad0 R13=ffff88806ce09ab8 R14=ffff88806ce09fe8 R15=ffff88806ce09a70 RIP=ffffffff8112fbf3 RFL=00000202 [-------] 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 00007f10aba29900 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=00007f4d67be9650 CR3=000000000cbf8000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=98392d04c69fc60800000000000ae988 XMM05=700a89da0d79bf840000000000132eb8 XMM06=58f4ab45df9af2b800000000001318e8 XMM07=fb795ef6d65770560000000000120870 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff8880090bf190 RCX=ffffffff844f9e74 RDX=1ffff11001217e34 RSI=0000000000000000 RDI=0000000000000000 RBP=00000000000019a2 RSP=ffff8880090bf0c8 R8 =0000000000000006 R9 =00000000000019a2 R10=0000000000001b1e R11=0000000000009293 R12=ffff888019777700 R13=0000000000000022 R14=0000000000001b1e R15=0000000000000000 RIP=ffffffff814c03a8 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 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=00007ffdd4753ff8 CR3=000000000e64e000 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=2038323a30343a3231203032206e754a XMM01=657463656e6e6f63736944203a5d3832 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3832325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038323a30343a3231203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000