syzkaller login: [ 30.345544] BUG: Bad rss-counter state mm:000000007bbc64e1 type:MM_FILEPAGES val:33 [ 30.347003] BUG: Bad rss-counter state mm:000000007bbc64e1 type:MM_ANONPAGES val:22 [ 30.515746] ================================================================== [ 30.516742] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.517706] Read of size 8 at addr ffff88800eaff6b0 by task sshd/220 [ 30.518567] [ 30.518787] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.519706] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.520702] Call Trace: [ 30.521019] [ 30.521309] dump_stack_lvl+0x91/0xf0 [ 30.521805] print_report+0xcc/0x620 [ 30.522284] ? __virt_addr_valid+0x102/0x340 [ 30.522846] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.523463] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.524089] kasan_report+0xbe/0xf0 [ 30.524567] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.525200] vma_interval_tree_remove+0xc75/0xec0 [ 30.525806] vma_prepare+0xc54/0x11a0 [ 30.526282] __split_vma+0x5af/0x950 [ 30.526757] ? __pfx___split_vma+0x10/0x10 [ 30.527282] ? find_held_lock+0x2c/0x110 [ 30.527830] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.528390] ? lock_is_held_type+0x9f/0x120 [ 30.528924] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.529525] ? mtree_range_walk+0x632/0x900 [ 30.530077] ? mas_walk+0x5c7/0x7c0 [ 30.530555] do_vmi_munmap+0x1f1/0x2b0 [ 30.531053] mmap_region+0x1f9/0x2660 [ 30.531541] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.532062] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.532785] ? __pfx_lock_acquire+0x10/0x10 [ 30.533320] ? __pfx_mmap_region+0x10/0x10 [ 30.533847] ? security_mmap_addr+0x7d/0xa0 [ 30.534384] ? get_unmapped_area+0x1f5/0x3f0 [ 30.534941] do_mmap+0x854/0xf00 [ 30.535395] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.535908] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.536484] ksys_mmap_pgoff+0x3af/0x500 [ 30.536991] do_syscall_64+0x3f/0x90 [ 30.537489] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.538141] RIP: 0033:0x7fe067150d82 [ 30.538605] 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 [ 30.540789] RSP: 002b:00007fff79cf39e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.541695] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe067150d82 [ 30.542550] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe06658a000 [ 30.543396] RBP: 00007fe06658a000 R08: 0000000000000009 R09: 0000000000001000 [ 30.544299] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b7e9810ec0 [ 30.545154] R13: 00007fff79cf3a00 R14: 00007fff79cf3a30 R15: 00007fff79cf3d90 [ 30.546027] [ 30.546328] [ 30.546552] Allocated by task 213: [ 30.546982] kasan_save_stack+0x22/0x50 [ 30.547484] kasan_set_track+0x25/0x30 [ 30.547997] __kasan_slab_alloc+0x59/0x70 [ 30.548533] kmem_cache_alloc+0x16b/0x370 [ 30.549054] vm_area_dup+0x20/0x160 [ 30.549530] __split_vma+0x170/0x950 [ 30.549999] split_vma+0xc6/0x110 [ 30.550441] mprotect_fixup+0x8d2/0xb30 [ 30.550945] do_mprotect_pkey+0x87e/0xd40 [ 30.551475] __x64_sys_mprotect+0x78/0xc0 [ 30.552011] do_syscall_64+0x3f/0x90 [ 30.552502] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.553141] [ 30.553358] Freed by task 213: [ 30.553753] kasan_save_stack+0x22/0x50 [ 30.554257] kasan_set_track+0x25/0x30 [ 30.554757] kasan_save_free_info+0x2b/0x50 [ 30.555297] __kasan_slab_free+0x10a/0x190 [ 30.555837] kmem_cache_free+0x10d/0x4d0 [ 30.556345] rcu_core+0x8c8/0x2860 [ 30.556796] __do_softirq+0x1b7/0x7d4 [ 30.557285] [ 30.557507] Last potentially related work creation: [ 30.558099] kasan_save_stack+0x22/0x50 [ 30.558606] __kasan_record_aux_stack+0x8e/0xa0 [ 30.559188] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.559843] remove_vma+0x139/0x170 [ 30.560297] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.560854] do_vmi_munmap+0x1f1/0x2b0 [ 30.561344] __vm_munmap+0x138/0x3a0 [ 30.561812] __x64_sys_munmap+0x59/0x80 [ 30.562311] do_syscall_64+0x3f/0x90 [ 30.562785] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.563431] [ 30.563646] The buggy address belongs to the object at ffff88800eaff658 [ 30.563646] which belongs to the cache vm_area_struct of size 168 [ 30.565140] The buggy address is located 88 bytes inside of [ 30.565140] freed 168-byte region [ffff88800eaff658, ffff88800eaff700) [ 30.566554] [ 30.566774] The buggy address belongs to the physical page: [ 30.567431] page:00000000e37e3739 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeaff [ 30.568546] memcg:ffff888019ea2f01 [ 30.568970] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.569610] page_type: 0xffffffff() [ 30.570060] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.570979] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888019ea2f01 [ 30.571908] page dumped because: kasan: bad access detected [ 30.572591] [ 30.572805] Memory state around the buggy address: [ 30.573398] ffff88800eaff580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.574278] ffff88800eaff600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.575136] >ffff88800eaff680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.575993] ^ [ 30.576590] ffff88800eaff700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 30.577453] ffff88800eaff780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 30.578313] ================================================================== [ 30.579275] Disabling lock debugging due to kernel taint [ 32.552809] BUG: Bad rss-counter state mm:000000006ed11489 type:MM_FILEPAGES val:33 [ 32.553811] BUG: Bad rss-counter state mm:000000006ed11489 type:MM_ANONPAGES val:22 [ 33.048841] BUG: Bad rss-counter state mm:000000006a46697e type:MM_FILEPAGES val:33 [ 33.049827] BUG: Bad rss-counter state mm:000000006a46697e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:56634' (ECDSA) to the list of known hosts. 2023/06/21 02:29:30 fuzzer started 2023/06/21 02:29:30 dialing manager at localhost:36067 2023/06/21 02:29:30 checking machine... 2023/06/21 02:29:30 checking revisions... [ 33.800319] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:29:31 testing simple program... [ 33.848998] cgroup: Unknown subsys name 'net' [ 33.905403] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:29:30 Registers: info registers vcpu 0 RAX=00000000000060de RBX=ffff888008c42140 RCX=ffffffff8181f603 RDX=ffffed1001188429 RSI=0000000000000008 RDI=ffff888008c42140 RBP=0000000000000001 RSP=ffff888008d9fba8 R8 =0000000000000001 R9 =ffffed1001188428 R10=ffff888008c42147 R11=0000000000000128 R12=ffff888008c42140 R13=0000000000000001 R14=dffffc0000000000 R15=ffff8880167a9010 RIP=ffffffff8181f60f RFL=00000217 [----APC] 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 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=00007fb98c18f618 CR3=000000000e1b2000 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=39323a3230203132206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3932325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320323139 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=0000000000000001 RBX=ffff88806cf35000 RCX=ffffffff812d8f13 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=0000000000000001 RSP=ffff888008e37bb0 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000128 R12=0000000000000000 R13=0000000000000000 R14=ffff88800df2d278 R15=0000000000000000 RIP=ffffffff8135b979 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 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=00007f0961477c40 CR3=000000000e046000 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=563412feff00545000000000000080fe 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