syzkaller login: [ 38.598462] BUG: Bad rss-counter state mm:00000000e06d87a7 type:MM_FILEPAGES val:33 [ 38.599033] BUG: Bad rss-counter state mm:00000000e06d87a7 type:MM_ANONPAGES val:22 [ 38.711356] ================================================================== [ 38.712055] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.712770] Read of size 8 at addr ffff888019d4cc20 by task sshd/219 [ 38.713373] [ 38.713540] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.714205] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.715023] Call Trace: [ 38.715265] [ 38.715481] dump_stack_lvl+0x91/0xf0 [ 38.715859] print_report+0xcc/0x620 [ 38.716230] ? __virt_addr_valid+0x102/0x340 [ 38.716676] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.717149] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.717648] kasan_report+0xbe/0xf0 [ 38.718014] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.718394] vma_interval_tree_remove+0xc75/0xec0 [ 38.718717] vma_prepare+0xc54/0x11a0 [ 38.718975] __split_vma+0x5af/0x950 [ 38.719230] ? __pfx___split_vma+0x10/0x10 [ 38.719517] ? find_held_lock+0x2c/0x110 [ 38.719803] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.720122] ? lock_is_held_type+0x9f/0x120 [ 38.720429] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.720775] ? mtree_range_walk+0x632/0x900 [ 38.721092] ? mas_walk+0x5c7/0x7c0 [ 38.721372] do_vmi_munmap+0x1f1/0x2b0 [ 38.721656] mmap_region+0x1f9/0x2660 [ 38.721936] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.722228] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.722654] ? __pfx_lock_acquire+0x10/0x10 [ 38.722960] ? __pfx_mmap_region+0x10/0x10 [ 38.723264] ? security_mmap_addr+0x7d/0xa0 [ 38.723573] ? get_unmapped_area+0x1f5/0x3f0 [ 38.723883] do_mmap+0x854/0xf00 [ 38.724135] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.724425] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.724753] ksys_mmap_pgoff+0x3af/0x500 [ 38.725046] do_syscall_64+0x3f/0x90 [ 38.725333] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.725715] RIP: 0033:0x7eff6b9e2d82 [ 38.725982] 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 [ 38.727210] RSP: 002b:00007ffce617f2c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.727727] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007eff6b9e2d82 [ 38.728209] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007eff6ae1c000 [ 38.728701] RBP: 00007eff6ae1c000 R08: 0000000000000009 R09: 0000000000001000 [ 38.729186] R10: 0000000000000812 R11: 0000000000000206 R12: 00005624b6596f70 [ 38.729669] R13: 00007ffce617f2e0 R14: 00007ffce617f310 R15: 00007ffce617f670 [ 38.730238] [ 38.730434] [ 38.730574] Allocated by task 212: [ 38.730855] kasan_save_stack+0x22/0x50 [ 38.731183] kasan_set_track+0x25/0x30 [ 38.731509] __kasan_slab_alloc+0x59/0x70 [ 38.731854] kmem_cache_alloc+0x16b/0x370 [ 38.732194] vm_area_dup+0x20/0x160 [ 38.732499] __split_vma+0x170/0x950 [ 38.732808] split_vma+0xc6/0x110 [ 38.733101] mprotect_fixup+0x8d2/0xb30 [ 38.733463] do_mprotect_pkey+0x87e/0xd40 [ 38.733807] __x64_sys_mprotect+0x78/0xc0 [ 38.734142] do_syscall_64+0x3f/0x90 [ 38.734451] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.734866] [ 38.735004] Freed by task 13: [ 38.735252] kasan_save_stack+0x22/0x50 [ 38.735580] kasan_set_track+0x25/0x30 [ 38.735897] kasan_save_free_info+0x2b/0x50 [ 38.736237] __kasan_slab_free+0x10a/0x190 [ 38.736581] kmem_cache_free+0x10d/0x4d0 [ 38.736909] rcu_core+0x8c8/0x2860 [ 38.737198] __do_softirq+0x1b7/0x7d4 [ 38.737518] [ 38.737658] Last potentially related work creation: [ 38.738044] kasan_save_stack+0x22/0x50 [ 38.738365] __kasan_record_aux_stack+0x8e/0xa0 [ 38.738735] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.739151] remove_vma+0x139/0x170 [ 38.739448] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.739811] do_vmi_munmap+0x1f1/0x2b0 [ 38.740126] __vm_munmap+0x138/0x3a0 [ 38.740427] __x64_sys_munmap+0x59/0x80 [ 38.740751] do_syscall_64+0x3f/0x90 [ 38.741058] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.741483] [ 38.741623] Second to last potentially related work creation: [ 38.742069] kasan_save_stack+0x22/0x50 [ 38.742393] __kasan_record_aux_stack+0x8e/0xa0 [ 38.742771] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.743191] remove_vma+0x139/0x170 [ 38.743483] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.743851] do_vmi_munmap+0x1f1/0x2b0 [ 38.744168] __vm_munmap+0x138/0x3a0 [ 38.744466] elf_map+0x26f/0x310 [ 38.744753] load_elf_binary+0x3417/0x5030 [ 38.745101] bprm_execve+0x803/0x1940 [ 38.745419] do_execveat_common+0x734/0x8e0 [ 38.745769] __x64_sys_execve+0x93/0xc0 [ 38.746096] do_syscall_64+0x3f/0x90 [ 38.746403] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.746811] [ 38.746950] The buggy address belongs to the object at ffff888019d4cbc8 [ 38.746950] which belongs to the cache vm_area_struct of size 168 [ 38.747850] The buggy address is located 88 bytes inside of [ 38.747850] freed 168-byte region [ffff888019d4cbc8, ffff888019d4cc70) [ 38.748735] [ 38.748855] The buggy address belongs to the physical page: [ 38.749270] page:00000000015367c8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x19d4c [ 38.749886] memcg:ffff88800e930c01 [ 38.750152] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.750610] page_type: 0xffffffff() [ 38.750859] raw: 0100000000000200 ffff8880087a0c80 ffffea0000363c80 dead000000000003 [ 38.751359] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e930c01 [ 38.751862] page dumped because: kasan: bad access detected [ 38.752234] [ 38.752350] Memory state around the buggy address: [ 38.752665] ffff888019d4cb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.753129] ffff888019d4cb80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 38.753630] >ffff888019d4cc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 38.754091] ^ [ 38.754375] ffff888019d4cc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 38.754840] ffff888019d4cd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 38.755309] ================================================================== [ 38.756043] Disabling lock debugging due to kernel taint [ 40.695984] BUG: Bad rss-counter state mm:000000005a7430ba type:MM_FILEPAGES val:33 [ 40.696734] BUG: Bad rss-counter state mm:000000005a7430ba type:MM_ANONPAGES val:22 [ 41.271279] BUG: Bad rss-counter state mm:00000000573ad6d6 type:MM_FILEPAGES val:33 [ 41.272455] BUG: Bad rss-counter state mm:00000000573ad6d6 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7119' (ECDSA) to the list of known hosts. 2023/06/21 10:47:27 fuzzer started 2023/06/21 10:47:27 dialing manager at localhost:36067 2023/06/21 10:47:27 checking machine... 2023/06/21 10:47:27 checking revisions... [ 41.914426] kmemleak: Automatic memory scanning thread ended 2023/06/21 10:47:27 testing simple program... [ 41.961816] cgroup: Unknown subsys name 'net' [ 42.009532] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 10:47:27 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff88801470f4f0 RCX=0000000000000001 RDX=1ffff110028e1e9e RSI=ffffffff8364b5e0 RDI=ffff88801470f4fc RBP=0000000000000006 RSP=ffff88801470f408 R8 =0000000000000001 R9 =ffff88801470f468 R10=0000000000038001 R11=00000000000391b0 R12=ffff88801470f4f0 R13=0000000000000000 R14=ffff888016be3680 R15=ffff888016bf8a74 RIP=ffffffff813ad51f 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 00007f0a1b8e2900 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=00007f0a1acdf3b0 CR3=000000000cbfe000 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=aa5dfb30515a9794f3437f1d36e9a6d3 XMM02=000000000011dfe8d59e07bde36eea69 XMM03=000000000011e110ec2efd57dc4c00df XMM04=eca282b171e694ed00000000000ae988 XMM05=5cf5d54a7517b93400000000001350b8 XMM06=4fda316b135da52b0000000000133de8 XMM07=fb795ef6d65770560000000000123448 XMM08=2c67c8bc2e329bc3000000000011e110 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000009 RBX=00007fda1002cec0 RCX=00000000000000bd RDX=0000000000000000 RSI=0000000000000000 RDI=000055c7e18a2570 RBP=00007fda0c002e40 RSP=00007fda1a879758 R8 =0000000000000000 R9 =0000000000000000 R10=0000000000000001 R11=0000000000000286 R12=00007fda1a8798d0 R13=00007fda0c002e40 R14=000055c7e0cfaec0 R15=0000000000000000 RIP=000055c7e0cac5d3 RFL=00000202 [-------] 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 00007fda1a87a700 00000000 00000000 GS =0000 0000000000000000 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=00007f6b8c24f0b0 CR3=000000000972c000 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=2036323a37343a3031203132206e754a XMM01=657463656e6e6f63736944203a5d3932 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3932325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732036323a37343a3031203132 XMM08=00007fda1001a1a00000005c00000080 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000