[ 24.417681] BUG: Bad rss-counter state mm:00000000977c1875 type:MM_FILEPAGES val:33 [ 24.419209] BUG: Bad rss-counter state mm:00000000977c1875 type:MM_ANONPAGES val:22 [ 24.586127] ================================================================== [ 24.587183] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.588375] Read of size 8 at addr ffff88800e6b8798 by task sshd/219 [ 24.589245] [ 24.589459] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 24.590309] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.591288] Call Trace: [ 24.591607] [ 24.591890] dump_stack_lvl+0x91/0xf0 [ 24.592372] print_report+0xcc/0x620 [ 24.592858] ? __virt_addr_valid+0x102/0x340 [ 24.593400] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.594005] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.594613] kasan_report+0xbe/0xf0 [ 24.595080] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.595700] vma_interval_tree_remove+0xc75/0xec0 [ 24.596293] vma_prepare+0xc54/0x11a0 [ 24.596781] __split_vma+0x5af/0x950 [ 24.597249] ? __pfx___split_vma+0x10/0x10 [ 24.597770] ? find_held_lock+0x2c/0x110 [ 24.598290] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.598845] ? lock_is_held_type+0x9f/0x120 [ 24.599377] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.599973] ? mtree_range_walk+0x632/0x900 [ 24.600520] ? mas_walk+0x5c7/0x7c0 [ 24.601003] do_vmi_munmap+0x1f1/0x2b0 [ 24.601486] mmap_region+0x1f9/0x2660 [ 24.601959] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.602464] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.603165] ? __pfx_lock_acquire+0x10/0x10 [ 24.603687] ? __pfx_mmap_region+0x10/0x10 [ 24.604217] ? security_mmap_addr+0x7d/0xa0 [ 24.604749] ? get_unmapped_area+0x1f5/0x3f0 [ 24.605297] do_mmap+0x854/0xf00 [ 24.605731] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.606227] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.606781] ksys_mmap_pgoff+0x3af/0x500 [ 24.607286] do_syscall_64+0x3f/0x90 [ 24.607758] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.608495] RIP: 0033:0x7f213cfe7d82 [ 24.608991] 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 [ 24.611166] RSP: 002b:00007ffefb650208 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.612099] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f213cfe7d82 [ 24.612986] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f213c421000 [ 24.613847] RBP: 00007f213c421000 R08: 0000000000000009 R09: 0000000000001000 [ 24.614704] R10: 0000000000000812 R11: 0000000000000206 R12: 00005603a4bdbec0 [ 24.615568] R13: 00007ffefb650220 R14: 00007ffefb650250 R15: 00007ffefb6505b0 [ 24.616433] [ 24.616750] [ 24.616966] Allocated by task 212: [ 24.617402] kasan_save_stack+0x22/0x50 [ 24.617908] kasan_set_track+0x25/0x30 [ 24.618405] __kasan_slab_alloc+0x59/0x70 [ 24.618933] kmem_cache_alloc+0x16b/0x370 [ 24.619461] vm_area_dup+0x20/0x160 [ 24.619920] __split_vma+0x170/0x950 [ 24.620393] split_vma+0xc6/0x110 [ 24.620838] mprotect_fixup+0x8d2/0xb30 [ 24.621343] do_mprotect_pkey+0x87e/0xd40 [ 24.621866] __x64_sys_mprotect+0x78/0xc0 [ 24.622390] do_syscall_64+0x3f/0x90 [ 24.622867] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.623515] [ 24.623734] Freed by task 212: [ 24.624133] kasan_save_stack+0x22/0x50 [ 24.624652] kasan_set_track+0x25/0x30 [ 24.625151] kasan_save_free_info+0x2b/0x50 [ 24.625680] __kasan_slab_free+0x10a/0x190 [ 24.626218] kmem_cache_free+0x10d/0x4d0 [ 24.626736] rcu_core+0x8c8/0x2860 [ 24.627189] __do_softirq+0x1b7/0x7d4 [ 24.627676] [ 24.627895] Last potentially related work creation: [ 24.628488] kasan_save_stack+0x22/0x50 [ 24.629010] __kasan_record_aux_stack+0x8e/0xa0 [ 24.629636] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.630293] remove_vma+0x139/0x170 [ 24.630756] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.631319] do_vmi_munmap+0x1f1/0x2b0 [ 24.631807] __vm_munmap+0x138/0x3a0 [ 24.632283] __x64_sys_munmap+0x59/0x80 [ 24.632807] do_syscall_64+0x3f/0x90 [ 24.633283] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.633933] [ 24.634179] Second to last potentially related work creation: [ 24.634992] kasan_save_stack+0x22/0x50 [ 24.635494] __kasan_record_aux_stack+0x8e/0xa0 [ 24.636089] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.636776] remove_vma+0x139/0x170 [ 24.637265] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.637900] do_vmi_munmap+0x1f1/0x2b0 [ 24.638401] mmap_region+0x1f9/0x2660 [ 24.638880] do_mmap+0x854/0xf00 [ 24.639314] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.639812] ksys_mmap_pgoff+0x7d/0x500 [ 24.640308] do_syscall_64+0x3f/0x90 [ 24.640788] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.641437] [ 24.641653] The buggy address belongs to the object at ffff88800e6b8740 [ 24.641653] which belongs to the cache vm_area_struct of size 168 [ 24.643141] The buggy address is located 88 bytes inside of [ 24.643141] freed 168-byte region [ffff88800e6b8740, ffff88800e6b87e8) [ 24.644571] [ 24.644788] The buggy address belongs to the physical page: [ 24.645452] page:00000000de18b754 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe6b8 [ 24.646542] memcg:ffff88800e471701 [ 24.646972] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.647630] page_type: 0xffffffff() [ 24.648080] raw: 0100000000000200 ffff8880087a0c80 ffffea00003104c0 dead000000000004 [ 24.649015] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e471701 [ 24.649990] page dumped because: kasan: bad access detected [ 24.650661] [ 24.650882] Memory state around the buggy address: [ 24.651469] ffff88800e6b8680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.652365] ffff88800e6b8700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 24.653269] >ffff88800e6b8780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 24.654133] ^ [ 24.654637] ffff88800e6b8800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 24.655504] ffff88800e6b8880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 24.656362] ================================================================== [ 24.657308] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.709649] BUG: Bad rss-counter state mm:000000005d7935ca type:MM_FILEPAGES val:33 [ 26.710802] BUG: Bad rss-counter state mm:000000005d7935ca type:MM_ANONPAGES val:22 [ 27.123144] BUG: Bad rss-counter state mm:00000000c4245d1c type:MM_FILEPAGES val:33 [ 27.124356] BUG: Bad rss-counter state mm:00000000c4245d1c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:27968' (ECDSA) to the list of known hosts. 2023/06/21 06:47:12 fuzzer started 2023/06/21 06:47:12 dialing manager at localhost:36067 2023/06/21 06:47:12 checking machine... 2023/06/21 06:47:12 checking revisions... [ 27.863113] kmemleak: Automatic memory scanning thread ended 2023/06/21 06:47:12 testing simple program... [ 27.916695] cgroup: Unknown subsys name 'net' [ 27.974748] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 06:47:11 Registers: info registers vcpu 0 RAX=1ffff11001373106 RBX=0000000000000002 RCX=0000000000000000 RDX=dffffc0000000000 RSI=ffffffff83723cb3 RDI=0000000000000005 RBP=0000000000000003 RSP=ffff88800fda7640 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6a61 R12=0000000000000001 R13=ffffffff87f99af0 R14=ffff888009b98830 R15=0000000000000006 RIP=ffffffff83723ccd RFL=00000246 [---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 00007fe0f4840900 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=00007fe0f4df7618 CR3=000000000f318000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000005eb9 RBX=ffffffff85d3e490 RCX=1ffffffff0ba7a85 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff888008d955b4 RBP=ffff88806cf3a2d8 RSP=ffff88806cf09c58 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=ffff88806cf09ff8 R12=ffffffff85d3d41c R13=ffff88806cf3a2c0 R14=1ffff1100d9e139c R15=0000000000000000 RIP=ffffffff8137cc29 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 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=00007f20b5431cc0 CR3=0000000008cc8000 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=950ab167083a0eb6ef4d4443be7ba010 XMM02=000000000011fb00eff9b2d0a8fce9cb XMM03=000000000011fbd02c67c8bc2e329bc3 XMM04=cde0b47159d6ad7e00000000000ae988 XMM05=dfcdbad4f1609c3700000000001330b0 XMM06=3e4dc0488e075bcd0000000000132288 XMM07=e042d86d42eb936e0000000000122450 XMM08=c730fd2189a5a152000000000011fbd0 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000