syzkaller login: [ 50.569484] BUG: Bad rss-counter state mm:00000000d4108a26 type:MM_FILEPAGES val:33 [ 50.571077] BUG: Bad rss-counter state mm:00000000d4108a26 type:MM_ANONPAGES val:22 [ 50.755545] ================================================================== [ 50.756560] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 50.757676] Read of size 8 at addr ffff88800de57310 by task sshd/219 [ 50.758514] [ 50.758756] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 50.759702] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 50.760794] Call Trace: [ 50.761145] [ 50.761459] dump_stack_lvl+0x91/0xf0 [ 50.761993] print_report+0xcc/0x620 [ 50.762523] ? __virt_addr_valid+0x102/0x340 [ 50.763120] ? vma_interval_tree_remove+0xc75/0xec0 [ 50.763793] ? vma_interval_tree_remove+0xc75/0xec0 [ 50.764480] kasan_report+0xbe/0xf0 [ 50.765014] ? vma_interval_tree_remove+0xc75/0xec0 [ 50.765706] vma_interval_tree_remove+0xc75/0xec0 [ 50.766385] vma_prepare+0xc54/0x11a0 [ 50.766921] __split_vma+0x5af/0x950 [ 50.767449] ? __pfx___split_vma+0x10/0x10 [ 50.768065] ? find_held_lock+0x2c/0x110 [ 50.768651] do_vmi_align_munmap+0x2ba/0x11f0 [ 50.769291] ? lock_is_held_type+0x9f/0x120 [ 50.769899] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 50.770576] ? mtree_range_walk+0x632/0x900 [ 50.771201] ? mas_walk+0x5c7/0x7c0 [ 50.771738] do_vmi_munmap+0x1f1/0x2b0 [ 50.772316] mmap_region+0x1f9/0x2660 [ 50.772861] ? vm_mmap_pgoff+0x15c/0x3a0 [ 50.773443] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 50.774250] ? __pfx_lock_acquire+0x10/0x10 [ 50.774847] ? __pfx_mmap_region+0x10/0x10 [ 50.775454] ? security_mmap_addr+0x7d/0xa0 [ 50.776078] ? get_unmapped_area+0x1f5/0x3f0 [ 50.776710] do_mmap+0x854/0xf00 [ 50.777209] vm_mmap_pgoff+0x1a6/0x3a0 [ 50.777781] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 50.778429] ksys_mmap_pgoff+0x3af/0x500 [ 50.779007] do_syscall_64+0x3f/0x90 [ 50.779549] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 50.780298] RIP: 0033:0x7fd869e31d82 [ 50.780824] 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 [ 50.783255] RSP: 002b:00007fff8f5f6818 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 50.784315] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd869e31d82 [ 50.785298] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd86926b000 [ 50.786273] RBP: 00007fd86926b000 R08: 0000000000000009 R09: 0000000000001000 [ 50.787262] R10: 0000000000000812 R11: 0000000000000206 R12: 000055fd50538ec0 [ 50.788248] R13: 00007fff8f5f6830 R14: 00007fff8f5f6860 R15: 00007fff8f5f6bc0 [ 50.789241] [ 50.789577] [ 50.789834] Allocated by task 212: [ 50.790330] kasan_save_stack+0x22/0x50 [ 50.790918] kasan_set_track+0x25/0x30 [ 50.791493] __kasan_slab_alloc+0x59/0x70 [ 50.792119] kmem_cache_alloc+0x16b/0x370 [ 50.792717] vm_area_dup+0x20/0x160 [ 50.793249] __split_vma+0x170/0x950 [ 50.793793] split_vma+0xc6/0x110 [ 50.794305] mprotect_fixup+0x8d2/0xb30 [ 50.794886] do_mprotect_pkey+0x87e/0xd40 [ 50.795490] __x64_sys_mprotect+0x78/0xc0 [ 50.796105] do_syscall_64+0x3f/0x90 [ 50.796651] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 50.797407] [ 50.797662] Freed by task 212: [ 50.798121] kasan_save_stack+0x22/0x50 [ 50.798713] kasan_set_track+0x25/0x30 [ 50.799289] kasan_save_free_info+0x2b/0x50 [ 50.799906] __kasan_slab_free+0x10a/0x190 [ 50.800554] kmem_cache_free+0x10d/0x4d0 [ 50.801152] rcu_core+0x8c8/0x2860 [ 50.801681] __do_softirq+0x1b7/0x7d4 [ 50.802231] [ 50.802481] Last potentially related work creation: [ 50.803165] kasan_save_stack+0x22/0x50 [ 50.803759] __kasan_record_aux_stack+0x8e/0xa0 [ 50.804440] __call_rcu_common.constprop.0+0x6a/0xb90 [ 50.805192] remove_vma+0x139/0x170 [ 50.805723] do_vmi_align_munmap+0xd4a/0x11f0 [ 50.806387] do_vmi_munmap+0x1f1/0x2b0 [ 50.806966] __vm_munmap+0x138/0x3a0 [ 50.807520] __x64_sys_munmap+0x59/0x80 [ 50.808113] do_syscall_64+0x3f/0x90 [ 50.808664] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 50.809412] [ 50.809667] Second to last potentially related work creation: [ 50.810473] kasan_save_stack+0x22/0x50 [ 50.811069] __kasan_record_aux_stack+0x8e/0xa0 [ 50.811739] __call_rcu_common.constprop.0+0x6a/0xb90 [ 50.812515] remove_vma+0x139/0x170 [ 50.813046] do_vmi_align_munmap+0xd4a/0x11f0 [ 50.813710] do_vmi_munmap+0x1f1/0x2b0 [ 50.814302] mmap_region+0x1f9/0x2660 [ 50.814878] do_mmap+0x854/0xf00 [ 50.815389] vm_mmap_pgoff+0x1a6/0x3a0 [ 50.815980] ksys_mmap_pgoff+0x3af/0x500 [ 50.816582] do_syscall_64+0x3f/0x90 [ 50.817146] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 50.817908] [ 50.818164] The buggy address belongs to the object at ffff88800de572b8 [ 50.818164] which belongs to the cache vm_area_struct of size 168 [ 50.819926] The buggy address is located 88 bytes inside of [ 50.819926] freed 168-byte region [ffff88800de572b8, ffff88800de57360) [ 50.821629] [ 50.821855] The buggy address belongs to the physical page: [ 50.822518] page:00000000cac5ba0c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xde57 [ 50.823606] memcg:ffff88800edef601 [ 50.824050] flags: 0x100000000000200(slab|node=0|zone=1) [ 50.824696] page_type: 0xffffffff() [ 50.825148] raw: 0100000000000200 ffff88800879fc80 ffffea000036ad00 dead000000000008 [ 50.826075] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800edef601 [ 50.827002] page dumped because: kasan: bad access detected [ 50.827662] [ 50.827876] Memory state around the buggy address: [ 50.828483] ffff88800de57200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 50.829345] ffff88800de57280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 50.830231] >ffff88800de57300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 50.831091] ^ [ 50.831565] ffff88800de57380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 50.832467] ffff88800de57400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 50.833335] ================================================================== [ 50.834307] Disabling lock debugging due to kernel taint [ 52.721988] BUG: Bad rss-counter state mm:000000005c3a7475 type:MM_FILEPAGES val:33 [ 52.723610] BUG: Bad rss-counter state mm:000000005c3a7475 type:MM_ANONPAGES val:22 [ 53.103655] BUG: Bad rss-counter state mm:00000000b0ab80b5 type:MM_FILEPAGES val:33 [ 53.104720] BUG: Bad rss-counter state mm:00000000b0ab80b5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:53080' (ECDSA) to the list of known hosts. 2023/06/19 14:17:46 fuzzer started 2023/06/19 14:17:46 dialing manager at localhost:44161 2023/06/19 14:17:46 checking machine... 2023/06/19 14:17:46 checking revisions... [ 53.859049] kmemleak: Automatic memory scanning thread ended 2023/06/19 14:17:46 testing simple program... [ 53.909050] cgroup: Unknown subsys name 'net' [ 53.952792] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:17:26 Registers: info registers vcpu 0 RAX=00007fff08566cb2 RBX=00007fff08566cb0 RCX=0000000000000000 RDX=000000000000001c RSI=00007fff08566c10 RDI=00007fff08566cb2 RBP=00007fff08566c10 RSP=00007fff08566be8 R8 =000055aaa6629ed0 R9 =00007fff085e9080 R10=0000000000000000 R11=00007fff08566de0 R12=000000000000001b R13=00007fff08566c10 R14=000055aaa6607c50 R15=00007fff08566cb0 RIP=00007fec9bb67b35 RFL=00000206 [-----P-] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fec9b23a900 00000000 00000000 GS =0000 0000000000000000 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=00007fec9a692d10 CR3=000000000e3fc000 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=756f6a2f646d65747379732f6e75722f XMM01=00000000000000000000000000000000 XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=1a3c0b6f4a55ca1200000000000ae988 XMM05=e6e8e200dab1a5ca0000000000135cc0 XMM06=806171799158d96700000000001349f0 XMM07=fb795ef6d65770560000000000123f90 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080000000 RBX=0000000000000000 RCX=0000000080000000 RDX=0000000000000000 RSI=ffffffff814c8504 RDI=ffff88800c48d5b4 RBP=0000000000000000 RSP=ffff8880168170e0 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6996 R12=0000000000000000 R13=0000000000000000 R14=ffffffff85652a88 R15=0000000000092cc0 RIP=ffffffff814c07f1 RFL=00000293 [--S-A-C] 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 00007fd054e93900 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=00007fd05544a618 CR3=000000000f618000 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=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