syzkaller login: [ 28.707591] BUG: Bad rss-counter state mm:00000000b4b8fd7a type:MM_FILEPAGES val:33 [ 28.708761] BUG: Bad rss-counter state mm:00000000b4b8fd7a type:MM_ANONPAGES val:22 [ 28.906149] ================================================================== [ 28.907085] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.908024] Read of size 8 at addr ffff88800e652ed8 by task sshd/222 [ 28.908783] [ 28.909003] CPU: 0 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.909929] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.910913] Call Trace: [ 28.911230] [ 28.911516] dump_stack_lvl+0x91/0xf0 [ 28.912013] print_report+0xcc/0x620 [ 28.912494] ? __virt_addr_valid+0x102/0x340 [ 28.913045] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.913663] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.914281] kasan_report+0xbe/0xf0 [ 28.914767] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.915390] vma_interval_tree_remove+0xc75/0xec0 [ 28.915994] vma_prepare+0xc54/0x11a0 [ 28.916473] __split_vma+0x5af/0x950 [ 28.916950] ? __pfx___split_vma+0x10/0x10 [ 28.917483] ? find_held_lock+0x2c/0x110 [ 28.918006] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.918595] ? lock_is_held_type+0x9f/0x120 [ 28.919132] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.919733] ? mtree_range_walk+0x632/0x900 [ 28.920283] ? mas_walk+0x5c7/0x7c0 [ 28.920757] do_vmi_munmap+0x1f1/0x2b0 [ 28.921251] mmap_region+0x1f9/0x2660 [ 28.921730] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.922246] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.922961] ? __pfx_lock_acquire+0x10/0x10 [ 28.923492] ? __pfx_mmap_region+0x10/0x10 [ 28.924027] ? security_mmap_addr+0x7d/0xa0 [ 28.924554] ? get_unmapped_area+0x1f5/0x3f0 [ 28.925107] do_mmap+0x854/0xf00 [ 28.925546] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.926047] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.926637] ksys_mmap_pgoff+0x3af/0x500 [ 28.927149] do_syscall_64+0x3f/0x90 [ 28.927636] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.928286] RIP: 0033:0x7f3c60687d82 [ 28.928747] 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 [ 28.930885] RSP: 002b:00007fff6003d0f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.931802] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3c60687d82 [ 28.932655] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3c5fac1000 [ 28.933501] RBP: 00007f3c5fac1000 R08: 0000000000000009 R09: 0000000000001000 [ 28.934359] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b478c43ec0 [ 28.935203] R13: 00007fff6003d110 R14: 00007fff6003d140 R15: 00007fff6003d4a0 [ 28.936074] [ 28.936369] [ 28.936588] Allocated by task 213: [ 28.937019] kasan_save_stack+0x22/0x50 [ 28.937528] kasan_set_track+0x25/0x30 [ 28.938024] __kasan_slab_alloc+0x59/0x70 [ 28.938581] kmem_cache_alloc+0x16b/0x370 [ 28.939106] vm_area_dup+0x20/0x160 [ 28.939568] __split_vma+0x170/0x950 [ 28.940035] split_vma+0xc6/0x110 [ 28.940483] mprotect_fixup+0x8d2/0xb30 [ 28.940988] do_mprotect_pkey+0x87e/0xd40 [ 28.941514] __x64_sys_mprotect+0x78/0xc0 [ 28.942033] do_syscall_64+0x3f/0x90 [ 28.942521] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.943157] [ 28.943373] Freed by task 213: [ 28.943768] kasan_save_stack+0x22/0x50 [ 28.944283] kasan_set_track+0x25/0x30 [ 28.944775] kasan_save_free_info+0x2b/0x50 [ 28.945305] __kasan_slab_free+0x10a/0x190 [ 28.945839] kmem_cache_free+0x10d/0x4d0 [ 28.946354] rcu_core+0x8c8/0x2860 [ 28.946797] __do_softirq+0x1b7/0x7d4 [ 28.947273] [ 28.947488] Last potentially related work creation: [ 28.948066] kasan_save_stack+0x22/0x50 [ 28.948565] __kasan_record_aux_stack+0x8e/0xa0 [ 28.949132] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.949769] remove_vma+0x139/0x170 [ 28.950218] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.950786] do_vmi_munmap+0x1f1/0x2b0 [ 28.951281] __vm_munmap+0x138/0x3a0 [ 28.951752] __x64_sys_munmap+0x59/0x80 [ 28.952249] do_syscall_64+0x3f/0x90 [ 28.952726] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.953367] [ 28.953581] The buggy address belongs to the object at ffff88800e652e80 [ 28.953581] which belongs to the cache vm_area_struct of size 168 [ 28.955074] The buggy address is located 88 bytes inside of [ 28.955074] freed 168-byte region [ffff88800e652e80, ffff88800e652f28) [ 28.956483] [ 28.956700] The buggy address belongs to the physical page: [ 28.957360] page:0000000099833cce refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe652 [ 28.958478] memcg:ffff88800e65f001 [ 28.958908] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 28.959616] page_type: 0xffffffff() [ 28.960065] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 28.960995] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e65f001 [ 28.961963] page dumped because: kasan: bad access detected [ 28.962652] [ 28.962876] Memory state around the buggy address: [ 28.963478] ffff88800e652d80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.964369] ffff88800e652e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 28.965277] >ffff88800e652e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.966173] ^ [ 28.966944] ffff88800e652f00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 28.967845] ffff88800e652f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.968742] ================================================================== [ 28.969763] Disabling lock debugging due to kernel taint [ 31.233600] BUG: Bad rss-counter state mm:00000000313f4f14 type:MM_FILEPAGES val:33 [ 31.234828] BUG: Bad rss-counter state mm:00000000313f4f14 type:MM_ANONPAGES val:22 [ 31.704618] BUG: Bad rss-counter state mm:0000000005419cde type:MM_FILEPAGES val:33 [ 31.705604] BUG: Bad rss-counter state mm:0000000005419cde type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:64275' (ECDSA) to the list of known hosts. 2023/06/20 11:27:28 fuzzer started 2023/06/20 11:27:28 dialing manager at localhost:36067 2023/06/20 11:27:28 checking machine... 2023/06/20 11:27:28 checking revisions... [ 32.369799] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:27:28 testing simple program... [ 32.411189] cgroup: Unknown subsys name 'net' [ 32.452457] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:27:28 Registers: info registers vcpu 0 RAX=ffffffff85d3d350 RBX=0000000000000000 RCX=ffffffff815342db RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=ffffffff84535ffc RSP=ffff88800daaf738 R8 =0000000000000000 R9 =ffffed1000d40012 R10=ffff888006a00093 R11=0030733a745f6c65 R12=ffff88800990a210 R13=0000000000000293 R14=ffff888006a00090 R15=ffff88800f0a9990 RIP=ffffffff8180f032 RFL=00000002 [-------] 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 00007fd1c42fd900 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=00007f48c813b650 CR3=000000000ccd4000 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=ae11254d3521fab0064a4e124731aaa1 XMM02=000000000011bd58eff9b2d0a8fce9cb XMM03=000000000011be282c67c8bc2e329bc3 XMM04=30bec753851d0b0700000000000ae988 XMM05=edb809456e6298b000000000001339e0 XMM06=e4cb8bb95a7664b60000000000132878 XMM07=fb795ef6d65770560000000000122348 XMM08=2c67c8bc2e329bc3000000000011bdc8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffff888018b03c28 RCX=0000000000000000 RDX=ffff888018b03c28 RSI=ffffffff818d9bc0 RDI=ffff888018b03c30 RBP=ffffffff83634090 RSP=ffff888018f57c38 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000001 R11=00000000000b6a61 R12=ffffffff818d9bc0 R13=0000000000000020 R14=ffff888018b03ac8 R15=ffff888018b03b18 RIP=ffffffff81370a63 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 00007f48c7b86900 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=00007ffe5fc69000 CR3=000000000d668000 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