[ 24.206040] BUG: Bad rss-counter state mm:0000000008e487bd type:MM_FILEPAGES val:33 [ 24.207960] BUG: Bad rss-counter state mm:0000000008e487bd type:MM_ANONPAGES val:22 [ 24.371132] ================================================================== [ 24.372038] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.372972] Read of size 8 at addr ffff88800e0f5058 by task sshd/219 [ 24.373755] [ 24.374053] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 24.374986] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.375958] Call Trace: [ 24.376280] [ 24.376560] dump_stack_lvl+0x91/0xf0 [ 24.377049] print_report+0xcc/0x620 [ 24.377580] ? __virt_addr_valid+0x102/0x340 [ 24.378159] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.378775] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.379389] kasan_report+0xbe/0xf0 [ 24.379871] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.380490] vma_interval_tree_remove+0xc75/0xec0 [ 24.381096] vma_prepare+0xc54/0x11a0 [ 24.381593] __split_vma+0x5af/0x950 [ 24.382060] ? __pfx___split_vma+0x10/0x10 [ 24.382588] ? find_held_lock+0x2c/0x110 [ 24.383105] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.383665] ? lock_is_held_type+0x9f/0x120 [ 24.384204] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.384801] ? mtree_range_walk+0x632/0x900 [ 24.385369] ? mas_walk+0x5c7/0x7c0 [ 24.385839] do_vmi_munmap+0x1f1/0x2b0 [ 24.386327] mmap_region+0x1f9/0x2660 [ 24.386802] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.387317] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.388035] ? __pfx_lock_acquire+0x10/0x10 [ 24.388571] ? __pfx_mmap_region+0x10/0x10 [ 24.389094] ? security_mmap_addr+0x7d/0xa0 [ 24.389646] ? get_unmapped_area+0x1f5/0x3f0 [ 24.390196] do_mmap+0x854/0xf00 [ 24.390637] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.391128] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.391724] ksys_mmap_pgoff+0x3af/0x500 [ 24.392230] do_syscall_64+0x3f/0x90 [ 24.392716] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.393398] RIP: 0033:0x7f52d86fcd82 [ 24.393856] 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 [ 24.396000] RSP: 002b:00007ffebd675208 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.397065] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f52d86fcd82 [ 24.397937] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f52d7b36000 [ 24.398937] RBP: 00007f52d7b36000 R08: 0000000000000009 R09: 0000000000001000 [ 24.399847] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a62fbecec0 [ 24.400744] R13: 00007ffebd675220 R14: 00007ffebd675250 R15: 00007ffebd6755b0 [ 24.401621] [ 24.401911] [ 24.402129] Allocated by task 212: [ 24.402583] kasan_save_stack+0x22/0x50 [ 24.403091] kasan_set_track+0x25/0x30 [ 24.403593] __kasan_slab_alloc+0x59/0x70 [ 24.404112] kmem_cache_alloc+0x16b/0x370 [ 24.404624] vm_area_dup+0x20/0x160 [ 24.405111] __split_vma+0x170/0x950 [ 24.405698] split_vma+0xc6/0x110 [ 24.406153] mprotect_fixup+0x8d2/0xb30 [ 24.406660] do_mprotect_pkey+0x87e/0xd40 [ 24.407227] __x64_sys_mprotect+0x78/0xc0 [ 24.407842] do_syscall_64+0x3f/0x90 [ 24.408329] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.408990] [ 24.409209] Freed by task 212: [ 24.409689] kasan_save_stack+0x22/0x50 [ 24.410304] kasan_set_track+0x25/0x30 [ 24.410899] kasan_save_free_info+0x2b/0x50 [ 24.411531] __kasan_slab_free+0x10a/0x190 [ 24.412193] kmem_cache_free+0x10d/0x4d0 [ 24.412783] rcu_core+0x8c8/0x2860 [ 24.413286] __do_softirq+0x1b7/0x7d4 [ 24.413880] [ 24.414125] Last potentially related work creation: [ 24.414719] kasan_save_stack+0x22/0x50 [ 24.415288] __kasan_record_aux_stack+0x8e/0xa0 [ 24.416004] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.416807] remove_vma+0x139/0x170 [ 24.417391] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.417955] do_vmi_munmap+0x1f1/0x2b0 [ 24.418438] __vm_munmap+0x138/0x3a0 [ 24.418894] __x64_sys_munmap+0x59/0x80 [ 24.419388] do_syscall_64+0x3f/0x90 [ 24.419870] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.420503] [ 24.420722] The buggy address belongs to the object at ffff88800e0f5000 [ 24.420722] which belongs to the cache vm_area_struct of size 168 [ 24.422339] The buggy address is located 88 bytes inside of [ 24.422339] freed 168-byte region [ffff88800e0f5000, ffff88800e0f50a8) [ 24.423953] [ 24.424200] The buggy address belongs to the physical page: [ 24.424960] page:0000000087da29ed refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe0f5 [ 24.426212] memcg:ffff88800d38c701 [ 24.426698] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.427443] page_type: 0xffffffff() [ 24.427962] raw: 0100000000000200 ffff8880087a0c80 ffffea0000358bc0 dead000000000004 [ 24.429019] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d38c701 [ 24.430071] page dumped because: kasan: bad access detected [ 24.430811] [ 24.431050] Memory state around the buggy address: [ 24.431703] ffff88800e0f4f00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 24.432654] ffff88800e0f4f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 24.433622] >ffff88800e0f5000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.434590] ^ [ 24.435414] ffff88800e0f5080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 24.436367] ffff88800e0f5100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.437342] ================================================================== [ 24.438640] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.520501] BUG: Bad rss-counter state mm:000000008adc56bb type:MM_FILEPAGES val:33 [ 26.521783] BUG: Bad rss-counter state mm:000000008adc56bb type:MM_ANONPAGES val:22 [ 27.002064] BUG: Bad rss-counter state mm:000000003d0d60a6 type:MM_FILEPAGES val:33 [ 27.003287] BUG: Bad rss-counter state mm:000000003d0d60a6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18492' (ECDSA) to the list of known hosts. 2023/06/20 22:25:01 fuzzer started 2023/06/20 22:25:01 dialing manager at localhost:36067 2023/06/20 22:25:01 checking machine... 2023/06/20 22:25:01 checking revisions... [ 27.673293] kmemleak: Automatic memory scanning thread ended 2023/06/20 22:25:01 testing simple program... [ 27.727638] cgroup: Unknown subsys name 'net' [ 27.773686] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:25:00 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=00007ffe118a3fb8 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=00007f776f207510000055f2fae1b790 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=ffffffff818475d2 RBX=ffffffff813ad470 RCX=ffffffff8613f401 RDX=1ffff11001974eff RSI=ffffffff818475d2 RDI=ffff88800cba7868 RBP=ffff88800cba7838 RSP=ffff88800cba7798 R8 =ffffffff8613f412 R9 =ffff88800cba77e0 R10=0000000000038001 R11=0000000000021e7d R12=ffff88800cba7868 R13=0000000000000000 R14=ffff888015970000 R15=ffff888018378980 RIP=ffffffff813ad474 RFL=00000286 [--S--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 00007f71a1ebd900 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=00007ffc01247000 CR3=000000000e704000 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