syzkaller login: [ 31.519430] BUG: Bad rss-counter state mm:00000000d508b713 type:MM_FILEPAGES val:33 [ 31.520893] BUG: Bad rss-counter state mm:00000000d508b713 type:MM_ANONPAGES val:22 [ 31.669077] ================================================================== [ 31.670028] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.671015] Read of size 8 at addr ffff88800d799798 by task sshd/220 [ 31.671834] [ 31.672132] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.673032] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.674076] Call Trace: [ 31.674425] [ 31.674719] dump_stack_lvl+0x91/0xf0 [ 31.675229] print_report+0xcc/0x620 [ 31.675750] ? __virt_addr_valid+0x102/0x340 [ 31.676328] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.676980] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.677635] kasan_report+0xbe/0xf0 [ 31.678130] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.678781] vma_interval_tree_remove+0xc75/0xec0 [ 31.679407] vma_prepare+0xc54/0x11a0 [ 31.679925] __split_vma+0x5af/0x950 [ 31.680417] ? __pfx___split_vma+0x10/0x10 [ 31.680973] ? find_held_lock+0x2c/0x110 [ 31.681519] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.682113] ? lock_is_held_type+0x9f/0x120 [ 31.682677] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.683311] ? mtree_range_walk+0x632/0x900 [ 31.683907] ? mas_walk+0x5c7/0x7c0 [ 31.684408] do_vmi_munmap+0x1f1/0x2b0 [ 31.684923] mmap_region+0x1f9/0x2660 [ 31.685425] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.685956] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.686698] ? __pfx_lock_acquire+0x10/0x10 [ 31.687254] ? __pfx_mmap_region+0x10/0x10 [ 31.687816] ? security_mmap_addr+0x7d/0xa0 [ 31.688376] ? get_unmapped_area+0x1f5/0x3f0 [ 31.688948] do_mmap+0x854/0xf00 [ 31.689414] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.689927] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.690522] ksys_mmap_pgoff+0x3af/0x500 [ 31.691053] do_syscall_64+0x3f/0x90 [ 31.691577] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.692270] RIP: 0033:0x7fa37b498d82 [ 31.692749] 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 [ 31.694990] RSP: 002b:00007ffd90a46f18 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.695948] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa37b498d82 [ 31.696836] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa37a8d2000 [ 31.697720] RBP: 00007fa37a8d2000 R08: 0000000000000009 R09: 0000000000001000 [ 31.698605] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ecb8efbb20 [ 31.699516] R13: 00007ffd90a46f30 R14: 00007ffd90a46f60 R15: 00007ffd90a472c0 [ 31.700422] [ 31.700726] [ 31.700950] Allocated by task 213: [ 31.701397] kasan_save_stack+0x22/0x50 [ 31.701919] kasan_set_track+0x25/0x30 [ 31.702437] __kasan_slab_alloc+0x59/0x70 [ 31.702979] kmem_cache_alloc+0x16b/0x370 [ 31.703526] vm_area_dup+0x20/0x160 [ 31.704000] __split_vma+0x170/0x950 [ 31.704490] split_vma+0xc6/0x110 [ 31.704950] mprotect_fixup+0x8d2/0xb30 [ 31.705472] do_mprotect_pkey+0x87e/0xd40 [ 31.706020] __x64_sys_mprotect+0x78/0xc0 [ 31.706558] do_syscall_64+0x3f/0x90 [ 31.707061] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.707744] [ 31.707972] Freed by task 213: [ 31.708384] kasan_save_stack+0x22/0x50 [ 31.708913] kasan_set_track+0x25/0x30 [ 31.709429] kasan_save_free_info+0x2b/0x50 [ 31.709990] __kasan_slab_free+0x10a/0x190 [ 31.710542] kmem_cache_free+0x10d/0x4d0 [ 31.711073] rcu_core+0x8c8/0x2860 [ 31.711544] __do_softirq+0x1b7/0x7d4 [ 31.712045] [ 31.712275] Last potentially related work creation: [ 31.712887] kasan_save_stack+0x22/0x50 [ 31.713405] __kasan_record_aux_stack+0x8e/0xa0 [ 31.714009] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.714678] remove_vma+0x139/0x170 [ 31.715159] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.715752] do_vmi_munmap+0x1f1/0x2b0 [ 31.716263] __vm_munmap+0x138/0x3a0 [ 31.716751] __x64_sys_munmap+0x59/0x80 [ 31.717269] do_syscall_64+0x3f/0x90 [ 31.717763] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.718435] [ 31.718659] Second to last potentially related work creation: [ 31.719379] kasan_save_stack+0x22/0x50 [ 31.719928] __kasan_record_aux_stack+0x8e/0xa0 [ 31.720523] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.721192] remove_vma+0x139/0x170 [ 31.721662] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.722244] do_vmi_munmap+0x1f1/0x2b0 [ 31.722749] __vm_munmap+0x138/0x3a0 [ 31.723231] elf_map+0x26f/0x310 [ 31.723704] load_elf_binary+0x3417/0x5030 [ 31.724262] bprm_execve+0x803/0x1940 [ 31.724751] do_execveat_common+0x734/0x8e0 [ 31.725304] __x64_sys_execve+0x93/0xc0 [ 31.725811] do_syscall_64+0x3f/0x90 [ 31.726307] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.726980] [ 31.727203] The buggy address belongs to the object at ffff88800d799740 [ 31.727203] which belongs to the cache vm_area_struct of size 168 [ 31.728752] The buggy address is located 88 bytes inside of [ 31.728752] freed 168-byte region [ffff88800d799740, ffff88800d7997e8) [ 31.730232] [ 31.730454] The buggy address belongs to the physical page: [ 31.731148] page:00000000b5d5abfe refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd799 [ 31.732307] memcg:ffff88800e63de01 [ 31.732760] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.733439] page_type: 0xffffffff() [ 31.733907] raw: 0100000000000200 ffff8880087a0c80 dead000000000100 dead000000000122 [ 31.734877] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e63de01 [ 31.735843] page dumped because: kasan: bad access detected [ 31.736542] [ 31.736766] Memory state around the buggy address: [ 31.737374] ffff88800d799680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.738274] ffff88800d799700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.739179] >ffff88800d799780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 31.740090] ^ [ 31.740610] ffff88800d799800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 31.741514] ffff88800d799880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 31.742405] ================================================================== [ 31.743416] Disabling lock debugging due to kernel taint [ 33.703949] BUG: Bad rss-counter state mm:00000000c4e1424e type:MM_FILEPAGES val:33 [ 33.704998] BUG: Bad rss-counter state mm:00000000c4e1424e type:MM_ANONPAGES val:22 [ 34.260797] BUG: Bad rss-counter state mm:00000000ea65f168 type:MM_FILEPAGES val:33 [ 34.261774] BUG: Bad rss-counter state mm:00000000ea65f168 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:40160' (ECDSA) to the list of known hosts. 2023/06/21 04:22:05 fuzzer started 2023/06/21 04:22:05 dialing manager at localhost:36067 2023/06/21 04:22:05 checking machine... 2023/06/21 04:22:05 checking revisions... [ 34.938467] kmemleak: Automatic memory scanning thread ended 2023/06/21 04:22:05 testing simple program... [ 34.992532] cgroup: Unknown subsys name 'net' [ 35.036744] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:22:05 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffffed1001e52f78 RCX=0000000000000000 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=0000000000000001 RSP=ffff88800f297bb0 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000000 R12=0000000000000001 R13=0000000000000000 R14=ffff888010244ba0 R15=0000000000000000 RIP=ffffffff812d904a 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 00007f08c709a900 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=00007ffcdde13000 CR3=000000000eefa000 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=6720646572637465733a4d41503d706f XMM01=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000007 RBX=ffffffff85dbd804 RCX=ffffffff813ad71f RDX=0000000000000000 RSI=ffffffff860d8256 RDI=ffffffff85dbd7f8 RBP=ffffffff85dbd7f8 RSP=ffff88806cf099e0 R8 =ffffffff860d8256 R9 =ffff88806cf09ad8 R10=0000000000038001 R11=0000000000010b8d R12=ffffffff85dbd814 R13=ffffffff85dbd7f8 R14=ffffffff85dbd7f8 R15=dffffc0000000000 RIP=ffffffff8112fc8c RFL=00000202 [-------] 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=00007fd4a5521d00 CR3=000000000e800000 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=2035303a32323a3430203132206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034303a32323a3430203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000