[ 30.493831] BUG: Bad rss-counter state mm:000000000e0609b6 type:MM_FILEPAGES val:33 [ 30.494651] BUG: Bad rss-counter state mm:000000000e0609b6 type:MM_ANONPAGES val:22 [ 30.594696] ================================================================== [ 30.595398] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.596116] Read of size 8 at addr ffff88800e7d0b38 by task sshd/218 [ 30.596699] [ 30.596868] CPU: 0 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.597525] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.598281] Call Trace: [ 30.598526] [ 30.598743] dump_stack_lvl+0x91/0xf0 [ 30.599125] print_report+0xcc/0x620 [ 30.599550] ? __virt_addr_valid+0x102/0x340 [ 30.599997] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.600473] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.600941] kasan_report+0xbe/0xf0 [ 30.601304] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.601815] vma_interval_tree_remove+0xc75/0xec0 [ 30.602274] vma_prepare+0xc54/0x11a0 [ 30.602639] __split_vma+0x5af/0x950 [ 30.602999] ? __pfx___split_vma+0x10/0x10 [ 30.603400] ? find_held_lock+0x2c/0x110 [ 30.603798] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.604236] ? lock_is_held_type+0x9f/0x120 [ 30.604654] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.605125] ? mtree_range_walk+0x632/0x900 [ 30.605553] ? mas_walk+0x5c7/0x7c0 [ 30.605935] do_vmi_munmap+0x1f1/0x2b0 [ 30.606244] mmap_region+0x1f9/0x2660 [ 30.606516] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.606803] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.607225] ? __pfx_lock_acquire+0x10/0x10 [ 30.607528] ? __pfx_mmap_region+0x10/0x10 [ 30.607832] ? security_mmap_addr+0x7d/0xa0 [ 30.608142] ? get_unmapped_area+0x1f5/0x3f0 [ 30.608455] do_mmap+0x854/0xf00 [ 30.608702] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.608980] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.609297] ksys_mmap_pgoff+0x3af/0x500 [ 30.609587] do_syscall_64+0x3f/0x90 [ 30.609865] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.610239] RIP: 0033:0x7fb839a8ad82 [ 30.610496] 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 [ 30.611700] RSP: 002b:00007ffd5e441d98 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.612227] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb839a8ad82 [ 30.612718] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb838ec4000 [ 30.613209] RBP: 00007fb838ec4000 R08: 0000000000000009 R09: 0000000000001000 [ 30.613700] R10: 0000000000000812 R11: 0000000000000206 R12: 0000561f4d35cec0 [ 30.614201] R13: 00007ffd5e441db0 R14: 00007ffd5e441de0 R15: 00007ffd5e442140 [ 30.614687] [ 30.614852] [ 30.614981] Allocated by task 209: [ 30.615225] kasan_save_stack+0x22/0x50 [ 30.615508] kasan_set_track+0x25/0x30 [ 30.615791] __kasan_slab_alloc+0x59/0x70 [ 30.616096] kmem_cache_alloc+0x16b/0x370 [ 30.616387] vm_area_dup+0x20/0x160 [ 30.616647] __split_vma+0x170/0x950 [ 30.616908] split_vma+0xc6/0x110 [ 30.617154] mprotect_fixup+0x8d2/0xb30 [ 30.617441] do_mprotect_pkey+0x87e/0xd40 [ 30.617740] __x64_sys_mprotect+0x78/0xc0 [ 30.618052] do_syscall_64+0x3f/0x90 [ 30.618324] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.618688] [ 30.618812] Freed by task 1: [ 30.619022] kasan_save_stack+0x22/0x50 [ 30.619313] kasan_set_track+0x25/0x30 [ 30.619594] kasan_save_free_info+0x2b/0x50 [ 30.619903] __kasan_slab_free+0x10a/0x190 [ 30.620204] kmem_cache_free+0x10d/0x4d0 [ 30.620497] rcu_core+0x8c8/0x2860 [ 30.620745] __do_softirq+0x1b7/0x7d4 [ 30.621021] [ 30.621143] Last potentially related work creation: [ 30.621479] kasan_save_stack+0x22/0x50 [ 30.621757] __kasan_record_aux_stack+0x8e/0xa0 [ 30.622095] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.622462] remove_vma+0x139/0x170 [ 30.622715] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.623043] do_vmi_munmap+0x1f1/0x2b0 [ 30.623312] __vm_munmap+0x138/0x3a0 [ 30.623573] __x64_sys_munmap+0x59/0x80 [ 30.623863] do_syscall_64+0x3f/0x90 [ 30.624134] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.624500] [ 30.624618] Second to last potentially related work creation: [ 30.625017] kasan_save_stack+0x22/0x50 [ 30.625307] __kasan_record_aux_stack+0x8e/0xa0 [ 30.625636] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.626014] remove_vma+0x139/0x170 [ 30.626278] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.626586] do_vmi_munmap+0x1f1/0x2b0 [ 30.626871] mmap_region+0x1f9/0x2660 [ 30.627143] do_mmap+0x854/0xf00 [ 30.627385] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.627657] ksys_mmap_pgoff+0x3af/0x500 [ 30.627947] do_syscall_64+0x3f/0x90 [ 30.628211] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.628578] [ 30.628704] The buggy address belongs to the object at ffff88800e7d0ae0 [ 30.628704] which belongs to the cache vm_area_struct of size 168 [ 30.629551] The buggy address is located 88 bytes inside of [ 30.629551] freed 168-byte region [ffff88800e7d0ae0, ffff88800e7d0b88) [ 30.630371] [ 30.630497] The buggy address belongs to the physical page: [ 30.630879] page:00000000c5866f60 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800e7d0658 pfn:0xe7d0 [ 30.631575] memcg:ffff88801009dd01 [ 30.631829] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.632186] page_type: 0xffffffff() [ 30.632444] raw: 0100000000000200 ffff8880087a0c80 ffffea00005bbc40 dead000000000004 [ 30.632962] raw: ffff88800e7d0658 0000000080110004 00000001ffffffff ffff88801009dd01 [ 30.633482] page dumped because: kasan: bad access detected [ 30.633868] [ 30.633993] Memory state around the buggy address: [ 30.634331] ffff88800e7d0a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.634828] ffff88800e7d0a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 30.635315] >ffff88800e7d0b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.635804] ^ [ 30.636156] ffff88800e7d0b80: fb fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb [ 30.636640] ffff88800e7d0c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 30.637127] ================================================================== [ 30.637953] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 32.736740] BUG: Bad rss-counter state mm:0000000051aecd91 type:MM_FILEPAGES val:33 [ 32.738264] BUG: Bad rss-counter state mm:0000000051aecd91 type:MM_ANONPAGES val:22 [ 33.199925] BUG: Bad rss-counter state mm:00000000e9efe6ad type:MM_FILEPAGES val:33 [ 33.201467] BUG: Bad rss-counter state mm:00000000e9efe6ad type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:42108' (ECDSA) to the list of known hosts. 2023/06/21 05:09:19 fuzzer started 2023/06/21 05:09:20 dialing manager at localhost:36067 2023/06/21 05:09:20 checking machine... 2023/06/21 05:09:20 checking revisions... [ 33.909766] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:09:20 testing simple program... [ 33.964462] cgroup: Unknown subsys name 'net' [ 34.023938] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:09:19 Registers: info registers vcpu 0 RAX=0000000080000101 RBX=ffff8880094ba140 RCX=1ffff1100d9c6c39 RDX=1ffff1100d9c6c3b RSI=0000000000000001 RDI=ffff8880094ba140 RBP=0000000000000001 RSP=ffff88806ce09d28 R8 =ffff88806ce361d0 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=ffff88806ce361d0 R13=ffff88806ce361d8 R14=0000000000000001 R15=ffff88800f00e000 RIP=ffffffff814c086b RFL=00000002 [-------] 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 00007fbb3906a900 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=00007fbb39621618 CR3=0000000016734000 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=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=00007ff3218ad720 CR3=00000000183fa000 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=39303a3530203132206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3732325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383239 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000