[ 25.994601] BUG: Bad rss-counter state mm:00000000437ed294 type:MM_FILEPAGES val:33 [ 25.996121] BUG: Bad rss-counter state mm:00000000437ed294 type:MM_ANONPAGES val:22 [ 26.141960] ================================================================== [ 26.142866] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 26.143795] Read of size 8 at addr ffff88800dffdc20 by task sshd/219 [ 26.144555] [ 26.144772] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 26.145794] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 26.146794] Call Trace: [ 26.147116] [ 26.147403] dump_stack_lvl+0x91/0xf0 [ 26.147903] print_report+0xcc/0x620 [ 26.148382] ? __virt_addr_valid+0x102/0x340 [ 26.148927] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.149547] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.150158] kasan_report+0xbe/0xf0 [ 26.150627] ? vma_interval_tree_remove+0xc75/0xec0 [ 26.151257] vma_interval_tree_remove+0xc75/0xec0 [ 26.151861] vma_prepare+0xc54/0x11a0 [ 26.152335] __split_vma+0x5af/0x950 [ 26.152804] ? __pfx___split_vma+0x10/0x10 [ 26.153331] ? find_held_lock+0x2c/0x110 [ 26.153850] do_vmi_align_munmap+0x2ba/0x11f0 [ 26.154407] ? lock_is_held_type+0x9f/0x120 [ 26.154956] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 26.155562] ? mtree_range_walk+0x632/0x900 [ 26.156107] ? mas_walk+0x5c7/0x7c0 [ 26.156576] do_vmi_munmap+0x1f1/0x2b0 [ 26.157065] mmap_region+0x1f9/0x2660 [ 26.157542] ? vm_mmap_pgoff+0x15c/0x3a0 [ 26.158047] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 26.158769] ? __pfx_lock_acquire+0x10/0x10 [ 26.159309] ? __pfx_mmap_region+0x10/0x10 [ 26.159878] ? security_mmap_addr+0x7d/0xa0 [ 26.160450] ? get_unmapped_area+0x1f5/0x3f0 [ 26.160999] do_mmap+0x854/0xf00 [ 26.161442] vm_mmap_pgoff+0x1a6/0x3a0 [ 26.161941] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 26.162513] ksys_mmap_pgoff+0x3af/0x500 [ 26.163043] do_syscall_64+0x3f/0x90 [ 26.163517] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.164179] RIP: 0033:0x7fdb506a7d82 [ 26.164647] 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 [ 26.166782] RSP: 002b:00007ffcfc6ce008 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 26.167695] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fdb506a7d82 [ 26.168563] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fdb4fae1000 [ 26.169415] RBP: 00007fdb4fae1000 R08: 0000000000000009 R09: 0000000000001000 [ 26.170263] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b1171fcec0 [ 26.171131] R13: 00007ffcfc6ce020 R14: 00007ffcfc6ce050 R15: 00007ffcfc6ce3b0 [ 26.171982] [ 26.172278] [ 26.172495] Allocated by task 212: [ 26.172924] kasan_save_stack+0x22/0x50 [ 26.173432] kasan_set_track+0x25/0x30 [ 26.173927] __kasan_slab_alloc+0x59/0x70 [ 26.174453] kmem_cache_alloc+0x16b/0x370 [ 26.174982] vm_area_dup+0x20/0x160 [ 26.175441] __split_vma+0x170/0x950 [ 26.175911] split_vma+0xc6/0x110 [ 26.176358] mprotect_fixup+0x8d2/0xb30 [ 26.176861] do_mprotect_pkey+0x87e/0xd40 [ 26.177388] __x64_sys_mprotect+0x78/0xc0 [ 26.177914] do_syscall_64+0x3f/0x90 [ 26.178391] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.179045] [ 26.179262] Freed by task 212: [ 26.179652] kasan_save_stack+0x22/0x50 [ 26.180159] kasan_set_track+0x25/0x30 [ 26.180656] kasan_save_free_info+0x2b/0x50 [ 26.181204] __kasan_slab_free+0x10a/0x190 [ 26.181742] kmem_cache_free+0x10d/0x4d0 [ 26.182259] rcu_core+0x8c8/0x2860 [ 26.182724] __do_softirq+0x1b7/0x7d4 [ 26.183209] [ 26.183422] Last potentially related work creation: [ 26.184013] kasan_save_stack+0x22/0x50 [ 26.184514] __kasan_record_aux_stack+0x8e/0xa0 [ 26.185088] __call_rcu_common.constprop.0+0x6a/0xb90 [ 26.185733] remove_vma+0x139/0x170 [ 26.186186] do_vmi_align_munmap+0xd4a/0x11f0 [ 26.186832] do_vmi_munmap+0x1f1/0x2b0 [ 26.187333] __vm_munmap+0x138/0x3a0 [ 26.187803] __x64_sys_munmap+0x59/0x80 [ 26.188304] do_syscall_64+0x3f/0x90 [ 26.188777] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 26.189422] [ 26.189638] The buggy address belongs to the object at ffff88800dffdbc8 [ 26.189638] which belongs to the cache vm_area_struct of size 168 [ 26.191123] The buggy address is located 88 bytes inside of [ 26.191123] freed 168-byte region [ffff88800dffdbc8, ffff88800dffdc70) [ 26.192526] [ 26.192743] The buggy address belongs to the physical page: [ 26.193400] page:00000000bdf6536c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdffd [ 26.194481] memcg:ffff88800e919101 [ 26.194917] flags: 0x100000000000200(slab|node=0|zone=1) [ 26.195577] page_type: 0xffffffff() [ 26.196026] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 26.196948] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e919101 [ 26.197850] page dumped because: kasan: bad access detected [ 26.198512] [ 26.198737] Memory state around the buggy address: [ 26.199322] ffff88800dffdb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 26.200173] ffff88800dffdb80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 26.201033] >ffff88800dffdc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 26.201882] ^ [ 26.202411] ffff88800dffdc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 26.203280] ffff88800dffdd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 26.204125] ================================================================== [ 26.205052] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 28.263239] BUG: Bad rss-counter state mm:00000000d7d340a0 type:MM_FILEPAGES val:33 [ 28.264102] BUG: Bad rss-counter state mm:00000000d7d340a0 type:MM_ANONPAGES val:22 [ 28.754546] BUG: Bad rss-counter state mm:00000000c15a6785 type:MM_FILEPAGES val:33 [ 28.755720] BUG: Bad rss-counter state mm:00000000c15a6785 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:51685' (ECDSA) to the list of known hosts. 2023/06/19 23:56:02 fuzzer started 2023/06/19 23:56:03 dialing manager at localhost:44161 2023/06/19 23:56:03 checking machine... 2023/06/19 23:56:03 checking revisions... [ 29.450887] kmemleak: Automatic memory scanning thread ended 2023/06/19 23:56:03 testing simple program... [ 29.504712] cgroup: Unknown subsys name 'net' [ 29.576444] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 23:56:00 Registers: info registers vcpu 0 RAX=ffffed1002c68e00 RBX=ffffed1002c68e0b RCX=ffffffff82158747 RDX=ffffed1002c68e0b RSI=0000000000000053 RDI=ffff888016347000 RBP=ffffed1002c68e00 RSP=ffff888016fa7738 R8 =0000000000000000 R9 =ffffed1002c68e0a R10=ffff888016347052 R11=00676f6c2d766564 R12=ffff888016347000 R13=00007fd348000bf3 R14=0000000000000000 R15=ffff888016fa7e70 RIP=ffffffff8180f009 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 00007fd35045f700 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=00007fa75a72e618 CR3=00000000158f2000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3832325b646873732032303a3635 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363937 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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=00007f392815c610 CR3=000000000d5d0000 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=4bf659549971d78fa24bbbb27d7b76b3 XMM02=2c67c8bc2e329bc3000000000011ffc0 XMM03=fb795ef6d65770560000000000123c68 XMM04=98e4131945ce6c0700000000000ae988 XMM05=dfcdbad4f1609c3700000000001337f8 XMM06=16329c6d16f1e2270000000000131f98 XMM07=e042d86d42eb936e0000000000123f40 XMM08=8864c2f9f7fdf0640000000000120020 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000