syzkaller login: [ 30.684335] BUG: Bad rss-counter state mm:000000007751b9a9 type:MM_FILEPAGES val:33 [ 30.685041] BUG: Bad rss-counter state mm:000000007751b9a9 type:MM_ANONPAGES val:22 [ 30.819767] ================================================================== [ 30.820806] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.821885] Read of size 8 at addr ffff8880158d03f8 by task sshd/222 [ 30.822818] [ 30.822980] CPU: 0 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.823606] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.824318] Call Trace: [ 30.824554] [ 30.824763] dump_stack_lvl+0x91/0xf0 [ 30.825119] print_report+0xcc/0x620 [ 30.825472] ? __virt_addr_valid+0x102/0x340 [ 30.825873] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.826332] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.826781] kasan_report+0xbe/0xf0 [ 30.827129] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.827584] vma_interval_tree_remove+0xc75/0xec0 [ 30.828024] vma_prepare+0xc54/0x11a0 [ 30.828378] __split_vma+0x5af/0x950 [ 30.828723] ? __pfx___split_vma+0x10/0x10 [ 30.829110] ? find_held_lock+0x2c/0x110 [ 30.829489] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.829911] ? lock_is_held_type+0x9f/0x120 [ 30.830316] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.830761] ? mtree_range_walk+0x632/0x900 [ 30.831167] ? mas_walk+0x5c7/0x7c0 [ 30.831517] do_vmi_munmap+0x1f1/0x2b0 [ 30.831879] mmap_region+0x1f9/0x2660 [ 30.832235] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.832612] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.833138] ? __pfx_lock_acquire+0x10/0x10 [ 30.833530] ? __pfx_mmap_region+0x10/0x10 [ 30.833918] ? security_mmap_addr+0x7d/0xa0 [ 30.834320] ? get_unmapped_area+0x1f5/0x3f0 [ 30.834724] do_mmap+0x854/0xf00 [ 30.835045] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.835410] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.835845] ksys_mmap_pgoff+0x3af/0x500 [ 30.836217] do_syscall_64+0x3f/0x90 [ 30.836568] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.837043] RIP: 0033:0x7f7992b83d82 [ 30.837379] 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 [ 30.838940] RSP: 002b:00007ffd7f2fb9d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.839600] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f7992b83d82 [ 30.840219] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f7991fbd000 [ 30.840840] RBP: 00007f7991fbd000 R08: 0000000000000009 R09: 0000000000001000 [ 30.841467] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c2f6759980 [ 30.842091] R13: 00007ffd7f2fb9f0 R14: 00007ffd7f2fba20 R15: 00007ffd7f2fbd80 [ 30.842733] [ 30.843080] [ 30.843244] Allocated by task 215: [ 30.843569] kasan_save_stack+0x22/0x50 [ 30.843960] kasan_set_track+0x25/0x30 [ 30.844359] __kasan_slab_alloc+0x59/0x70 [ 30.844763] kmem_cache_alloc+0x16b/0x370 [ 30.845156] vm_area_dup+0x20/0x160 [ 30.845499] __split_vma+0x170/0x950 [ 30.845856] split_vma+0xc6/0x110 [ 30.846205] mprotect_fixup+0x8d2/0xb30 [ 30.846586] do_mprotect_pkey+0x87e/0xd40 [ 30.846990] __x64_sys_mprotect+0x78/0xc0 [ 30.847387] do_syscall_64+0x3f/0x90 [ 30.847742] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.848233] [ 30.848394] Freed by task 13: [ 30.848686] kasan_save_stack+0x22/0x50 [ 30.849063] kasan_set_track+0x25/0x30 [ 30.849438] kasan_save_free_info+0x2b/0x50 [ 30.849846] __kasan_slab_free+0x10a/0x190 [ 30.850260] kmem_cache_free+0x10d/0x4d0 [ 30.850655] rcu_core+0x8c8/0x2860 [ 30.850993] __do_softirq+0x1b7/0x7d4 [ 30.851359] [ 30.851524] Last potentially related work creation: [ 30.851974] kasan_save_stack+0x22/0x50 [ 30.852429] __kasan_record_aux_stack+0x8e/0xa0 [ 30.852847] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.853339] remove_vma+0x139/0x170 [ 30.853668] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.854070] do_vmi_munmap+0x1f1/0x2b0 [ 30.854437] __vm_munmap+0x138/0x3a0 [ 30.854778] __x64_sys_munmap+0x59/0x80 [ 30.855147] do_syscall_64+0x3f/0x90 [ 30.855493] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.855964] [ 30.856124] The buggy address belongs to the object at ffff8880158d03a0 [ 30.856124] which belongs to the cache vm_area_struct of size 168 [ 30.857198] The buggy address is located 88 bytes inside of [ 30.857198] freed 168-byte region [ffff8880158d03a0, ffff8880158d0448) [ 30.858232] [ 30.858392] The buggy address belongs to the physical page: [ 30.858873] page:0000000078557b18 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x158d0 [ 30.859671] memcg:ffff888018112b01 [ 30.859982] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.860455] page_type: 0xffffffff() [ 30.860788] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.861463] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888018112b01 [ 30.862140] page dumped because: kasan: bad access detected [ 30.862628] [ 30.862790] Memory state around the buggy address: [ 30.863216] ffff8880158d0280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 30.863847] ffff8880158d0300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.864474] >ffff8880158d0380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.865106] ^ [ 30.865724] ffff8880158d0400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.866359] ffff8880158d0480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.866994] ================================================================== [ 30.867731] Disabling lock debugging due to kernel taint [ 32.401664] BUG: Bad rss-counter state mm:000000009325d219 type:MM_FILEPAGES val:33 [ 32.402821] BUG: Bad rss-counter state mm:000000009325d219 type:MM_ANONPAGES val:22 [ 32.754443] BUG: Bad rss-counter state mm:00000000f382546d type:MM_FILEPAGES val:33 [ 32.755642] BUG: Bad rss-counter state mm:00000000f382546d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:27558' (ECDSA) to the list of known hosts. 2023/06/21 01:32:06 fuzzer started 2023/06/21 01:32:06 dialing manager at localhost:36067 2023/06/21 01:32:06 checking machine... 2023/06/21 01:32:06 checking revisions... [ 33.472904] kmemleak: Automatic memory scanning thread ended 2023/06/21 01:32:06 testing simple program... [ 33.525452] cgroup: Unknown subsys name 'net' [ 33.592730] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:32:06 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff88800f1f5d80 RCX=ffffffff812d86ea RDX=0000000000000000 RSI=ffffffff81828d41 RDI=ffffffff8560b640 RBP=1ffff1100d9c139d RSP=ffff88806ce09cd8 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=ffffffff8560b640 R13=ffffffff81828d41 R14=ffff88800f1f5d90 R15=0000000000000001 RIP=ffffffff812d8699 RFL=00000212 [----A--] 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 00007fe3baeb6900 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=00007fff4401b000 CR3=0000000019f5c000 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=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 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=0000000000000001 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=00007ff69079d000 CR3=000000000d9b2000 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=4a001646f32645ac694c15c4d3c28f19 XMM02=000000000011d3a0eff9b2d0a8fce9cb XMM03=000000000011d4702c67c8bc2e329bc3 XMM04=42ba8d19e37aba9500000000000ae988 XMM05=633ee339ad504fb70000000000132850 XMM06=00c3ffa147b8d85700000000001318f0 XMM07=e042d86d42eb936e0000000000121df8 XMM08=661eeeabd2be54a8000000000011d470 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000