[ 23.768035] BUG: Bad rss-counter state mm:00000000d70730bd type:MM_FILEPAGES val:33 [ 23.769215] BUG: Bad rss-counter state mm:00000000d70730bd type:MM_ANONPAGES val:22 [ 23.807577] ================================================================== [ 23.808558] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.809600] Read of size 8 at addr ffff8880099cddf0 by task sshd/219 [ 23.810384] [ 23.810604] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.811487] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.812464] Call Trace: [ 23.812786] [ 23.813070] dump_stack_lvl+0x91/0xf0 [ 23.813573] print_report+0xcc/0x620 [ 23.814050] ? __virt_addr_valid+0x102/0x340 [ 23.814615] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.815243] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.815867] kasan_report+0xbe/0xf0 [ 23.816351] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.816990] vma_interval_tree_remove+0xc75/0xec0 [ 23.817611] vma_prepare+0xc54/0x11a0 [ 23.818103] __split_vma+0x5af/0x950 [ 23.818577] ? __pfx___split_vma+0x10/0x10 [ 23.819116] ? find_held_lock+0x2c/0x110 [ 23.819652] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.820225] ? lock_is_held_type+0x9f/0x120 [ 23.820764] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.821371] ? mtree_range_walk+0x632/0x900 [ 23.821955] ? mas_walk+0x5c7/0x7c0 [ 23.822432] do_vmi_munmap+0x1f1/0x2b0 [ 23.822937] mmap_region+0x1f9/0x2660 [ 23.823422] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.823937] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.824652] ? __pfx_lock_acquire+0x10/0x10 [ 23.825186] ? __pfx_mmap_region+0x10/0x10 [ 23.825724] ? security_mmap_addr+0x7d/0xa0 [ 23.826257] ? get_unmapped_area+0x1f5/0x3f0 [ 23.826810] do_mmap+0x854/0xf00 [ 23.827253] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.827746] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.828309] ksys_mmap_pgoff+0x3af/0x500 [ 23.828818] do_syscall_64+0x3f/0x90 [ 23.829296] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.829963] RIP: 0033:0x7f1461f2fd82 [ 23.830420] 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 [ 23.832555] RSP: 002b:00007ffd5f7a4a28 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.833476] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1461f2fd82 [ 23.834327] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1461369000 [ 23.835171] RBP: 00007f1461369000 R08: 0000000000000009 R09: 0000000000001000 [ 23.836019] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ce7a050ec0 [ 23.836870] R13: 00007ffd5f7a4a40 R14: 00007ffd5f7a4a70 R15: 00007ffd5f7a4dd0 [ 23.837742] [ 23.838038] [ 23.838256] Allocated by task 212: [ 23.838686] kasan_save_stack+0x22/0x50 [ 23.839198] kasan_set_track+0x25/0x30 [ 23.839694] __kasan_slab_alloc+0x59/0x70 [ 23.840219] kmem_cache_alloc+0x16b/0x370 [ 23.840736] vm_area_dup+0x20/0x160 [ 23.841191] __split_vma+0x170/0x950 [ 23.841668] split_vma+0xc6/0x110 [ 23.842111] mprotect_fixup+0x8d2/0xb30 [ 23.842613] do_mprotect_pkey+0x87e/0xd40 [ 23.843135] __x64_sys_mprotect+0x78/0xc0 [ 23.843654] do_syscall_64+0x3f/0x90 [ 23.844131] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.844774] [ 23.844991] Freed by task 19: [ 23.845370] kasan_save_stack+0x22/0x50 [ 23.845897] kasan_set_track+0x25/0x30 [ 23.846389] kasan_save_free_info+0x2b/0x50 [ 23.846930] __kasan_slab_free+0x10a/0x190 [ 23.847461] kmem_cache_free+0x10d/0x4d0 [ 23.847970] rcu_core+0x8c8/0x2860 [ 23.848495] __do_softirq+0x1b7/0x7d4 [ 23.848980] [ 23.849198] Last potentially related work creation: [ 23.849795] kasan_save_stack+0x22/0x50 [ 23.850296] __kasan_record_aux_stack+0x8e/0xa0 [ 23.850868] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.851512] remove_vma+0x139/0x170 [ 23.851970] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.852525] do_vmi_munmap+0x1f1/0x2b0 [ 23.853016] __vm_munmap+0x138/0x3a0 [ 23.853497] __x64_sys_munmap+0x59/0x80 [ 23.853998] do_syscall_64+0x3f/0x90 [ 23.854471] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.855122] [ 23.855340] Second to last potentially related work creation: [ 23.856024] kasan_save_stack+0x22/0x50 [ 23.856524] __kasan_record_aux_stack+0x8e/0xa0 [ 23.857104] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.857752] remove_vma+0x139/0x170 [ 23.858208] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.858768] do_vmi_munmap+0x1f1/0x2b0 [ 23.859248] mmap_region+0x1f9/0x2660 [ 23.859727] do_mmap+0x854/0xf00 [ 23.860158] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.860647] ksys_mmap_pgoff+0x3af/0x500 [ 23.861149] do_syscall_64+0x3f/0x90 [ 23.861643] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.862286] [ 23.862504] The buggy address belongs to the object at ffff8880099cdd98 [ 23.862504] which belongs to the cache vm_area_struct of size 168 [ 23.863979] The buggy address is located 88 bytes inside of [ 23.863979] freed 168-byte region [ffff8880099cdd98, ffff8880099cde40) [ 23.865386] [ 23.865616] The buggy address belongs to the physical page: [ 23.866277] page:00000000e2d03090 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x99cd [ 23.867391] memcg:ffff8880099cc101 [ 23.867821] flags: 0x100000000000200(slab|node=0|zone=1) [ 23.868466] page_type: 0xffffffff() [ 23.868919] raw: 0100000000000200 ffff8880087a0c80 ffffea00003b3e80 dead000000000008 [ 23.869846] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880099cc101 [ 23.870750] page dumped because: kasan: bad access detected [ 23.871421] [ 23.871638] Memory state around the buggy address: [ 23.872211] ffff8880099cdc80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 [ 23.873067] ffff8880099cdd00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 23.873940] >ffff8880099cdd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 23.874798] ^ [ 23.875609] ffff8880099cde00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 23.876465] ffff8880099cde80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.877315] ================================================================== [ 23.878225] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 25.985502] BUG: Bad rss-counter state mm:000000007b1d34a5 type:MM_FILEPAGES val:33 [ 25.986510] BUG: Bad rss-counter state mm:000000007b1d34a5 type:MM_ANONPAGES val:22 [ 26.409977] BUG: Bad rss-counter state mm:000000006dbc3e1d type:MM_FILEPAGES val:33 [ 26.410954] BUG: Bad rss-counter state mm:000000006dbc3e1d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:59545' (ECDSA) to the list of known hosts. 2023/06/20 14:59:59 fuzzer started 2023/06/20 14:59:59 dialing manager at localhost:36067 2023/06/20 14:59:59 checking machine... 2023/06/20 14:59:59 checking revisions... [ 27.125203] kmemleak: Automatic memory scanning thread ended 2023/06/20 14:59:59 testing simple program... [ 27.180364] cgroup: Unknown subsys name 'net' [ 27.241203] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:59:59 Registers: info registers vcpu 0 RAX=0000000080010001 RBX=000000000000c6e6 RCX=0000000000000000 RDX=ffffffff8542a6c0 RSI=ffffffff813c9237 RDI=ffffffff85d3d350 RBP=ffff88806ce28140 RSP=ffff88806ce09ea0 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=ffff88806ce09ff8 R12=000000061d470f40 R13=0000000000000000 R14=0000000000000000 R15=dffffc0000000000 RIP=ffffffff813c9246 RFL=00000046 [---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 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=00007ffd102ff7e8 CR3=000000000eb1c000 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=2038353a39353a3431203032206e754a XMM01=657463656e6e6f63736944203a5d3832 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3832325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038353a39353a3431203032 XMM08=00007f47080112900000007900000080 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffff888018eeedc8 RCX=ffffffff812e0473 RDX=0000000000000000 RSI=0000000000000004 RDI=ffff888018eeedc8 RBP=ffff888018eeedc8 RSP=ffff88801592f7d0 R8 =0000000000000000 R9 =ffffed10031dddb9 R10=ffff888018eeedcb R11=3830306234386136 R12=0000000000000234 R13=ffff88800fe2e260 R14=ffff888018eeedc8 R15=0000000000000232 RIP=ffffffff812e04a7 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 00007f8b291c4900 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=00007fef444f6650 CR3=000000000ec52000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=6cb7ee2c55b082e000000000000ae988 XMM05=7e9a209a372d54590000000000134828 XMM06=806171799158d96700000000001332a8 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000