syzkaller login: [ 30.663002] BUG: Bad rss-counter state mm:00000000a2783bfb type:MM_FILEPAGES val:33 [ 30.664766] BUG: Bad rss-counter state mm:00000000a2783bfb type:MM_ANONPAGES val:22 [ 30.822098] ================================================================== [ 30.823034] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.823994] Read of size 8 at addr ffff88800e35b3f8 by task sshd/220 [ 30.824774] [ 30.824999] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.826055] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.827082] Call Trace: [ 30.827415] [ 30.827702] dump_stack_lvl+0x91/0xf0 [ 30.828218] print_report+0xcc/0x620 [ 30.828707] ? __virt_addr_valid+0x102/0x340 [ 30.829260] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.829894] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.830517] kasan_report+0xbe/0xf0 [ 30.831019] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.831639] vma_interval_tree_remove+0xc75/0xec0 [ 30.832252] vma_prepare+0xc54/0x11a0 [ 30.832730] __split_vma+0x5af/0x950 [ 30.833217] ? __pfx___split_vma+0x10/0x10 [ 30.833763] ? find_held_lock+0x2c/0x110 [ 30.834285] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.834863] ? lock_is_held_type+0x9f/0x120 [ 30.835424] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.836029] ? mtree_range_walk+0x632/0x900 [ 30.836584] ? mas_walk+0x5c7/0x7c0 [ 30.837069] do_vmi_munmap+0x1f1/0x2b0 [ 30.837564] mmap_region+0x1f9/0x2660 [ 30.838054] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.838564] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.839302] ? __pfx_lock_acquire+0x10/0x10 [ 30.839838] ? __pfx_mmap_region+0x10/0x10 [ 30.840376] ? security_mmap_addr+0x7d/0xa0 [ 30.840919] ? get_unmapped_area+0x1f5/0x3f0 [ 30.841474] do_mmap+0x854/0xf00 [ 30.841913] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.842410] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.842985] ksys_mmap_pgoff+0x3af/0x500 [ 30.843504] do_syscall_64+0x3f/0x90 [ 30.843988] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.844653] RIP: 0033:0x7f4636274d82 [ 30.845112] 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 [ 30.847287] RSP: 002b:00007ffe08d4ab88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.848220] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f4636274d82 [ 30.849078] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f46356ae000 [ 30.849935] RBP: 00007f46356ae000 R08: 0000000000000009 R09: 0000000000001000 [ 30.850784] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561410509f70 [ 30.851639] R13: 00007ffe08d4aba0 R14: 00007ffe08d4abd0 R15: 00007ffe08d4af30 [ 30.852499] [ 30.852798] [ 30.853013] Allocated by task 213: [ 30.853447] kasan_save_stack+0x22/0x50 [ 30.853951] kasan_set_track+0x25/0x30 [ 30.854455] __kasan_slab_alloc+0x59/0x70 [ 30.854993] kmem_cache_alloc+0x16b/0x370 [ 30.855506] vm_area_dup+0x20/0x160 [ 30.855959] __split_vma+0x170/0x950 [ 30.856434] split_vma+0xc6/0x110 [ 30.856880] mprotect_fixup+0x8d2/0xb30 [ 30.857396] do_mprotect_pkey+0x87e/0xd40 [ 30.857939] __x64_sys_mprotect+0x78/0xc0 [ 30.858481] do_syscall_64+0x3f/0x90 [ 30.858989] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.859658] [ 30.859879] Freed by task 213: [ 30.860287] kasan_save_stack+0x22/0x50 [ 30.860806] kasan_set_track+0x25/0x30 [ 30.861315] kasan_save_free_info+0x2b/0x50 [ 30.861868] __kasan_slab_free+0x10a/0x190 [ 30.862415] kmem_cache_free+0x10d/0x4d0 [ 30.862951] rcu_core+0x8c8/0x2860 [ 30.863411] __do_softirq+0x1b7/0x7d4 [ 30.863907] [ 30.864128] Last potentially related work creation: [ 30.864726] kasan_save_stack+0x22/0x50 [ 30.865248] __kasan_record_aux_stack+0x8e/0xa0 [ 30.865847] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.866519] remove_vma+0x139/0x170 [ 30.867009] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.867706] do_vmi_munmap+0x1f1/0x2b0 [ 30.868210] __vm_munmap+0x138/0x3a0 [ 30.868694] __x64_sys_munmap+0x59/0x80 [ 30.869217] do_syscall_64+0x3f/0x90 [ 30.869712] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.870383] [ 30.870604] The buggy address belongs to the object at ffff88800e35b3a0 [ 30.870604] which belongs to the cache vm_area_struct of size 168 [ 30.872144] The buggy address is located 88 bytes inside of [ 30.872144] freed 168-byte region [ffff88800e35b3a0, ffff88800e35b448) [ 30.873604] [ 30.873828] The buggy address belongs to the physical page: [ 30.874513] page:0000000098d20f2b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe35b [ 30.875660] memcg:ffff88800c9b2e01 [ 30.876099] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.876773] page_type: 0xffffffff() [ 30.877237] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.878200] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c9b2e01 [ 30.879154] page dumped because: kasan: bad access detected [ 30.879839] [ 30.880061] Memory state around the buggy address: [ 30.880659] ffff88800e35b280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 30.881552] ffff88800e35b300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.882446] >ffff88800e35b380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.883349] ^ [ 30.884231] ffff88800e35b400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.885117] ffff88800e35b480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.886013] ================================================================== [ 30.887044] Disabling lock debugging due to kernel taint [ 33.124837] BUG: Bad rss-counter state mm:00000000205303be type:MM_FILEPAGES val:33 [ 33.126057] BUG: Bad rss-counter state mm:00000000205303be type:MM_ANONPAGES val:22 [ 33.598064] BUG: Bad rss-counter state mm:000000008c837176 type:MM_FILEPAGES val:33 [ 33.599102] BUG: Bad rss-counter state mm:000000008c837176 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:2703' (ECDSA) to the list of known hosts. 2023/06/21 02:27:43 fuzzer started 2023/06/21 02:27:43 dialing manager at localhost:36067 2023/06/21 02:27:43 checking machine... 2023/06/21 02:27:43 checking revisions... [ 34.349607] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:27:43 testing simple program... [ 34.399309] cgroup: Unknown subsys name 'net' [ 34.453728] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:27:43 Registers: info registers vcpu 0 RAX=0000000080000000 RBX=0000000000001000 RCX=0000000000000000 RDX=ffff88800f4bd1c0 RSI=ffffffff8185c965 RDI=0000000000000007 RBP=ffff88800fc1fec8 RSP=ffff88800fc1fd40 R8 =0000000000000007 R9 =0000000000000000 R10=0000000000001000 R11=0000000000000000 R12=0000000000000000 R13=ffff88800c61e280 R14=ffff88800fc1fec8 R15=0000000000000001 RIP=ffffffff814c086b RFL=00000282 [--S----] 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 00007f26cdbcd900 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=00007ffe1dc97000 CR3=000000000cbc6000 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=2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c2c XMM01=00ff00000000000000000000000000ff XMM02=00ff00000000000000000000000000ff XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=6500273d2720676e6974636570786500 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 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 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=00007f6f20ff59c0 CR3=000000000d7bc000 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=4ca31c0ae7a9b59f3c47b7a8d6551445 XMM02=000000000011d2e0ec2efd57dc4c00df XMM03=00000000001219a8b790f44e534fc42b XMM04=6fd87c8aaa8988e500000000000ae988 XMM05=19e9129bd510f2350000000000131830 XMM06=eb7add3350c035690000000000130698 XMM07=e042d86d42eb936e0000000000121c28 XMM08=b790f44e534fc42b000000000011d340 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000