syzkaller login: [ 28.747948] BUG: Bad rss-counter state mm:00000000d7774ffc type:MM_FILEPAGES val:33 [ 28.748991] BUG: Bad rss-counter state mm:00000000d7774ffc type:MM_ANONPAGES val:22 [ 28.924124] ================================================================== [ 28.925201] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.926336] Read of size 8 at addr ffff8880165ba058 by task sshd/221 [ 28.927460] [ 28.927729] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.928763] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.929981] Call Trace: [ 28.930369] [ 28.930717] dump_stack_lvl+0x91/0xf0 [ 28.931321] print_report+0xcc/0x620 [ 28.931905] ? __virt_addr_valid+0x102/0x340 [ 28.932575] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.933332] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.934085] kasan_report+0xbe/0xf0 [ 28.934669] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.935431] vma_interval_tree_remove+0xc75/0xec0 [ 28.936149] vma_prepare+0xc54/0x11a0 [ 28.936717] __split_vma+0x5af/0x950 [ 28.937277] ? __pfx___split_vma+0x10/0x10 [ 28.937927] ? find_held_lock+0x2c/0x110 [ 28.938501] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.939105] ? lock_is_held_type+0x9f/0x120 [ 28.939686] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.940337] ? mtree_range_walk+0x632/0x900 [ 28.940921] ? mas_walk+0x5c7/0x7c0 [ 28.941429] do_vmi_munmap+0x1f1/0x2b0 [ 28.941959] mmap_region+0x1f9/0x2660 [ 28.942476] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.943018] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.943774] ? __pfx_lock_acquire+0x10/0x10 [ 28.944352] ? __pfx_mmap_region+0x10/0x10 [ 28.944928] ? security_mmap_addr+0x7d/0xa0 [ 28.945515] ? get_unmapped_area+0x1f5/0x3f0 [ 28.946132] do_mmap+0x854/0xf00 [ 28.946613] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.947147] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.947762] ksys_mmap_pgoff+0x3af/0x500 [ 28.948319] do_syscall_64+0x3f/0x90 [ 28.948852] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.949563] RIP: 0033:0x7fbe71076d82 [ 28.950071] 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 [ 28.952383] RSP: 002b:00007ffc03958e88 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.953375] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fbe71076d82 [ 28.954313] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fbe704b0000 [ 28.955240] RBP: 00007fbe704b0000 R08: 0000000000000009 R09: 0000000000001000 [ 28.956173] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b5ccb42ec0 [ 28.957077] R13: 00007ffc03958ea0 R14: 00007ffc03958ed0 R15: 00007ffc03959230 [ 28.958004] [ 28.958314] [ 28.958543] Allocated by task 214: [ 28.958999] kasan_save_stack+0x22/0x50 [ 28.959542] kasan_set_track+0x25/0x30 [ 28.960070] __kasan_slab_alloc+0x59/0x70 [ 28.960629] kmem_cache_alloc+0x16b/0x370 [ 28.961188] vm_area_dup+0x20/0x160 [ 28.961661] __split_vma+0x170/0x950 [ 28.962155] split_vma+0xc6/0x110 [ 28.962619] mprotect_fixup+0x8d2/0xb30 [ 28.963143] do_mprotect_pkey+0x87e/0xd40 [ 28.963683] __x64_sys_mprotect+0x78/0xc0 [ 28.964222] do_syscall_64+0x3f/0x90 [ 28.964743] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.965418] [ 28.965640] Freed by task 214: [ 28.966092] kasan_save_stack+0x22/0x50 [ 28.966654] kasan_set_track+0x25/0x30 [ 28.967209] kasan_save_free_info+0x2b/0x50 [ 28.967810] __kasan_slab_free+0x10a/0x190 [ 28.968433] kmem_cache_free+0x10d/0x4d0 [ 28.969005] rcu_core+0x8c8/0x2860 [ 28.969520] __do_softirq+0x1b7/0x7d4 [ 28.970069] [ 28.970316] Last potentially related work creation: [ 28.970984] kasan_save_stack+0x22/0x50 [ 28.971539] __kasan_record_aux_stack+0x8e/0xa0 [ 28.972180] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.972898] remove_vma+0x139/0x170 [ 28.973423] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.974063] do_vmi_munmap+0x1f1/0x2b0 [ 28.974601] __vm_munmap+0x138/0x3a0 [ 28.975120] __x64_sys_munmap+0x59/0x80 [ 28.975680] do_syscall_64+0x3f/0x90 [ 28.976215] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.976935] [ 28.977184] The buggy address belongs to the object at ffff8880165ba000 [ 28.977184] which belongs to the cache vm_area_struct of size 168 [ 28.978871] The buggy address is located 88 bytes inside of [ 28.978871] freed 168-byte region [ffff8880165ba000, ffff8880165ba0a8) [ 28.980467] [ 28.980711] The buggy address belongs to the physical page: [ 28.981460] page:0000000063d38892 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x165ba [ 28.982666] memcg:ffff88800df61001 [ 28.983111] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.983780] page_type: 0xffffffff() [ 28.984242] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 28.985212] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800df61001 [ 28.986155] page dumped because: kasan: bad access detected [ 28.986831] [ 28.987054] Memory state around the buggy address: [ 28.987680] ffff8880165b9f00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 28.988668] ffff8880165b9f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.989611] >ffff8880165ba000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.990497] ^ [ 28.991243] ffff8880165ba080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 28.992127] ffff8880165ba100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.992994] ================================================================== [ 28.994006] Disabling lock debugging due to kernel taint [ 31.678487] BUG: Bad rss-counter state mm:0000000041b0c0f8 type:MM_FILEPAGES val:33 [ 31.679752] BUG: Bad rss-counter state mm:0000000041b0c0f8 type:MM_ANONPAGES val:22 [ 31.960999] BUG: Bad rss-counter state mm:0000000073cda96d type:MM_FILEPAGES val:33 [ 31.961558] BUG: Bad rss-counter state mm:0000000073cda96d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:27039' (ECDSA) to the list of known hosts. 2023/06/21 08:52:11 fuzzer started 2023/06/21 08:52:11 dialing manager at localhost:36067 2023/06/21 08:52:11 checking machine... 2023/06/21 08:52:11 checking revisions... [ 32.590971] kmemleak: Automatic memory scanning thread ended 2023/06/21 08:52:12 testing simple program... [ 32.641651] cgroup: Unknown subsys name 'net' [ 32.691619] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 08:52:11 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 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 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=00007ffc5e87fff8 CR3=0000000005482000 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=00007fe597e845100000557d5665f790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080000000 RBX=0000000000000002 RCX=ffffffff8449fb17 RDX=0000000000000003 RSI=0000000000000001 RDI=0000000000000005 RBP=ffffffff84e39c20 RSP=ffff88801a176e48 R8 =0000000000000005 R9 =0000000000000001 R10=0000000000000003 R11=ffff88801cb0461c R12=0000000000000003 R13=0000000000000005 R14=0000000000000003 R15=ffff88801a176f20 RIP=ffffffff814c0250 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 00007f29ff882900 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=00007f29ff861020 CR3=0000000016c14000 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=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000