syzkaller login: [ 61.446517] BUG: Bad rss-counter state mm:0000000065174c30 type:MM_FILEPAGES val:33 [ 61.447564] BUG: Bad rss-counter state mm:0000000065174c30 type:MM_ANONPAGES val:22 [ 61.606595] ================================================================== [ 61.607520] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 61.608484] Read of size 8 at addr ffff88800e843228 by task sshd/220 [ 61.609276] [ 61.609498] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 61.610592] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 61.611576] Call Trace: [ 61.611903] [ 61.612188] dump_stack_lvl+0x91/0xf0 [ 61.612677] print_report+0xcc/0x620 [ 61.613171] ? __virt_addr_valid+0x102/0x340 [ 61.613727] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.614358] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.614999] kasan_report+0xbe/0xf0 [ 61.615482] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.616116] vma_interval_tree_remove+0xc75/0xec0 [ 61.616724] vma_prepare+0xc54/0x11a0 [ 61.617217] __split_vma+0x5af/0x950 [ 61.617694] ? __pfx___split_vma+0x10/0x10 [ 61.618233] ? find_held_lock+0x2c/0x110 [ 61.618772] do_vmi_align_munmap+0x2ba/0x11f0 [ 61.619348] ? lock_is_held_type+0x9f/0x120 [ 61.619898] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 61.620507] ? mtree_range_walk+0x632/0x900 [ 61.621064] ? mas_walk+0x5c7/0x7c0 [ 61.621544] do_vmi_munmap+0x1f1/0x2b0 [ 61.622037] mmap_region+0x1f9/0x2660 [ 61.622542] ? vm_mmap_pgoff+0x15c/0x3a0 [ 61.623058] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 61.623775] ? __pfx_lock_acquire+0x10/0x10 [ 61.624311] ? __pfx_mmap_region+0x10/0x10 [ 61.624846] ? security_mmap_addr+0x7d/0xa0 [ 61.625384] ? get_unmapped_area+0x1f5/0x3f0 [ 61.625944] do_mmap+0x854/0xf00 [ 61.626387] vm_mmap_pgoff+0x1a6/0x3a0 [ 61.626917] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 61.627497] ksys_mmap_pgoff+0x3af/0x500 [ 61.628009] do_syscall_64+0x3f/0x90 [ 61.628486] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.629132] RIP: 0033:0x7fa074943d82 [ 61.629594] 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 [ 61.631758] RSP: 002b:00007ffd758834f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 61.632689] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa074943d82 [ 61.633553] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa073d7d000 [ 61.634415] RBP: 00007fa073d7d000 R08: 0000000000000009 R09: 0000000000001000 [ 61.635309] R10: 0000000000000812 R11: 0000000000000206 R12: 00005625c1730ec0 [ 61.636187] R13: 00007ffd75883510 R14: 00007ffd75883540 R15: 00007ffd758838a0 [ 61.637059] [ 61.637359] [ 61.637583] Allocated by task 213: [ 61.638024] kasan_save_stack+0x22/0x50 [ 61.638540] kasan_set_track+0x25/0x30 [ 61.639044] __kasan_slab_alloc+0x59/0x70 [ 61.639575] kmem_cache_alloc+0x16b/0x370 [ 61.640100] vm_area_dup+0x20/0x160 [ 61.640561] __split_vma+0x170/0x950 [ 61.641037] split_vma+0xc6/0x110 [ 61.641487] mprotect_fixup+0x8d2/0xb30 [ 61.642004] do_mprotect_pkey+0x87e/0xd40 [ 61.642544] __x64_sys_mprotect+0x78/0xc0 [ 61.643076] do_syscall_64+0x3f/0x90 [ 61.643565] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.644222] [ 61.644440] Freed by task 213: [ 61.644834] kasan_save_stack+0x22/0x50 [ 61.645347] kasan_set_track+0x25/0x30 [ 61.645844] kasan_save_free_info+0x2b/0x50 [ 61.646389] __kasan_slab_free+0x10a/0x190 [ 61.646954] kmem_cache_free+0x10d/0x4d0 [ 61.647478] rcu_core+0x8c8/0x2860 [ 61.647929] __do_softirq+0x1b7/0x7d4 [ 61.648405] [ 61.648619] Last potentially related work creation: [ 61.649212] kasan_save_stack+0x22/0x50 [ 61.649716] __kasan_record_aux_stack+0x8e/0xa0 [ 61.650302] __call_rcu_common.constprop.0+0x6a/0xb90 [ 61.650952] remove_vma+0x139/0x170 [ 61.651409] do_vmi_align_munmap+0xd4a/0x11f0 [ 61.651973] do_vmi_munmap+0x1f1/0x2b0 [ 61.652462] __vm_munmap+0x138/0x3a0 [ 61.652928] __x64_sys_munmap+0x59/0x80 [ 61.653433] do_syscall_64+0x3f/0x90 [ 61.653906] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.654560] [ 61.654778] The buggy address belongs to the object at ffff88800e8431d0 [ 61.654778] which belongs to the cache vm_area_struct of size 168 [ 61.656263] The buggy address is located 88 bytes inside of [ 61.656263] freed 168-byte region [ffff88800e8431d0, ffff88800e843278) [ 61.657670] [ 61.657888] The buggy address belongs to the physical page: [ 61.658591] page:00000000de9daf93 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe843 [ 61.659717] memcg:ffff88800e02de01 [ 61.660158] flags: 0x100000000000200(slab|node=0|zone=1) [ 61.660818] page_type: 0xffffffff() [ 61.661287] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 61.662240] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e02de01 [ 61.663175] page dumped because: kasan: bad access detected [ 61.663848] [ 61.664067] Memory state around the buggy address: [ 61.664657] ffff88800e843100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 61.665526] ffff88800e843180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 61.666401] >ffff88800e843200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 61.667278] ^ [ 61.667841] ffff88800e843280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 61.668693] ffff88800e843300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 61.669548] ================================================================== [ 61.670703] Disabling lock debugging due to kernel taint [ 63.917956] BUG: Bad rss-counter state mm:000000005284ba93 type:MM_FILEPAGES val:33 [ 63.918959] BUG: Bad rss-counter state mm:000000005284ba93 type:MM_ANONPAGES val:22 [ 64.474287] BUG: Bad rss-counter state mm:00000000f03af908 type:MM_FILEPAGES val:33 [ 64.475687] BUG: Bad rss-counter state mm:00000000f03af908 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:17116' (ECDSA) to the list of known hosts. 2023/06/19 15:19:38 fuzzer started 2023/06/19 15:19:38 dialing manager at localhost:44161 2023/06/19 15:19:38 checking machine... 2023/06/19 15:19:38 checking revisions... [ 65.102382] kmemleak: Automatic memory scanning thread ended 2023/06/19 15:19:39 testing simple program... [ 65.135005] cgroup: Unknown subsys name 'net' [ 65.164660] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:19:37 Registers: info registers vcpu 0 RAX=000056316f5270c0 RBX=000056316f51cd00 RCX=0000000000000013 RDX=0000000000000002 RSI=000056316f52b0f3 RDI=000056316f5270c0 RBP=00007ffcc26a1a10 RSP=00007ffcc26a19a8 R8 =000056316f52b0f3 R9 =00007f0c395babe0 R10=0000000000200000 R11=0000000000000246 R12=0000000000000002 R13=000056316f52b0f4 R14=0000000000000002 R15=0000000000000000 RIP=00007f0c3955eb18 RFL=00000283 [--S---C] 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 00007f0c39008900 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=00007f0c395bd650 CR3=00000000146ea000 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=0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a0a XMM01=00000000000000000000000000000000 XMM02=00000000000000000000000000000000 XMM03=697472617473202c7369206863696877 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=73202c6e69676f6c2020202020202023 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080000001 RBX=ffff88806cf2c240 RCX=ffffffff813fb71d RDX=ffff888008d751c0 RSI=0000000000000000 RDI=0000000000000005 RBP=0000000000000000 RSP=ffff888008e27e38 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=ffff888008c58400 R12=dffffc0000000000 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff814c07eb RFL=00000046 [---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 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=00007f182139c720 CR3=000000000e458000 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=2038333a39313a3531203931206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038333a39313a3531203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000