[ 23.625797] BUG: Bad rss-counter state mm:000000006cacd891 type:MM_FILEPAGES val:33 [ 23.627308] BUG: Bad rss-counter state mm:000000006cacd891 type:MM_ANONPAGES val:22 [ 23.788371] ================================================================== [ 23.789475] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.790588] Read of size 8 at addr ffff88800dfd9c20 by task sshd/218 [ 23.791628] [ 23.791890] CPU: 1 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.792906] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.794006] Call Trace: [ 23.794332] [ 23.794617] dump_stack_lvl+0x91/0xf0 [ 23.795142] print_report+0xcc/0x620 [ 23.795625] ? __virt_addr_valid+0x102/0x340 [ 23.796194] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.796853] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.797481] kasan_report+0xbe/0xf0 [ 23.797982] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.798611] vma_interval_tree_remove+0xc75/0xec0 [ 23.799266] vma_prepare+0xc54/0x11a0 [ 23.799756] __split_vma+0x5af/0x950 [ 23.800243] ? __pfx___split_vma+0x10/0x10 [ 23.800814] ? find_held_lock+0x2c/0x110 [ 23.801515] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.802262] ? lock_is_held_type+0x9f/0x120 [ 23.802964] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.803727] ? mtree_range_walk+0x632/0x900 [ 23.804495] ? mas_walk+0x5c7/0x7c0 [ 23.805157] do_vmi_munmap+0x1f1/0x2b0 [ 23.805804] mmap_region+0x1f9/0x2660 [ 23.806401] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.807080] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.807981] ? __pfx_lock_acquire+0x10/0x10 [ 23.808650] ? __pfx_mmap_region+0x10/0x10 [ 23.809319] ? security_mmap_addr+0x7d/0xa0 [ 23.809992] ? get_unmapped_area+0x1f5/0x3f0 [ 23.810693] do_mmap+0x854/0xf00 [ 23.811164] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.811693] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.812266] ksys_mmap_pgoff+0x3af/0x500 [ 23.812802] do_syscall_64+0x3f/0x90 [ 23.813294] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.813975] RIP: 0033:0x7fa2583ded82 [ 23.814444] 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 [ 23.816641] RSP: 002b:00007ffc6af56918 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.817585] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa2583ded82 [ 23.818450] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa257818000 [ 23.819356] RBP: 00007fa257818000 R08: 0000000000000009 R09: 0000000000001000 [ 23.820218] R10: 0000000000000812 R11: 0000000000000206 R12: 000055de1839aec0 [ 23.821089] R13: 00007ffc6af56930 R14: 00007ffc6af56960 R15: 00007ffc6af56cc0 [ 23.821986] [ 23.822285] [ 23.822500] Allocated by task 211: [ 23.822974] kasan_save_stack+0x22/0x50 [ 23.823518] kasan_set_track+0x25/0x30 [ 23.824071] __kasan_slab_alloc+0x59/0x70 [ 23.824635] kmem_cache_alloc+0x16b/0x370 [ 23.825202] vm_area_dup+0x20/0x160 [ 23.825705] __split_vma+0x170/0x950 [ 23.826199] split_vma+0xc6/0x110 [ 23.826693] mprotect_fixup+0x8d2/0xb30 [ 23.827263] do_mprotect_pkey+0x87e/0xd40 [ 23.827833] __x64_sys_mprotect+0x78/0xc0 [ 23.828399] do_syscall_64+0x3f/0x90 [ 23.828918] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.829608] [ 23.829850] Freed by task 19: [ 23.830251] kasan_save_stack+0x22/0x50 [ 23.830820] kasan_set_track+0x25/0x30 [ 23.831348] kasan_save_free_info+0x2b/0x50 [ 23.831944] __kasan_slab_free+0x10a/0x190 [ 23.832555] kmem_cache_free+0x10d/0x4d0 [ 23.833106] rcu_core+0x8c8/0x2860 [ 23.833578] __do_softirq+0x1b7/0x7d4 [ 23.834107] [ 23.834335] Last potentially related work creation: [ 23.835024] kasan_save_stack+0x22/0x50 [ 23.835569] __kasan_record_aux_stack+0x8e/0xa0 [ 23.836218] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.836924] remove_vma+0x139/0x170 [ 23.837410] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.838028] do_vmi_munmap+0x1f1/0x2b0 [ 23.838546] __vm_munmap+0x138/0x3a0 [ 23.839077] __x64_sys_munmap+0x59/0x80 [ 23.839609] do_syscall_64+0x3f/0x90 [ 23.840136] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.840842] [ 23.841072] Second to last potentially related work creation: [ 23.841814] kasan_save_stack+0x22/0x50 [ 23.842356] __kasan_record_aux_stack+0x8e/0xa0 [ 23.842999] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.843707] remove_vma+0x139/0x170 [ 23.844189] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.844800] do_vmi_munmap+0x1f1/0x2b0 [ 23.845327] mmap_region+0x1f9/0x2660 [ 23.845846] do_mmap+0x854/0xf00 [ 23.846306] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.846873] ksys_mmap_pgoff+0x7d/0x500 [ 23.847400] do_syscall_64+0x3f/0x90 [ 23.847927] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.848611] [ 23.848848] The buggy address belongs to the object at ffff88800dfd9bc8 [ 23.848848] which belongs to the cache vm_area_struct of size 168 [ 23.850457] The buggy address is located 88 bytes inside of [ 23.850457] freed 168-byte region [ffff88800dfd9bc8, ffff88800dfd9c70) [ 23.852026] [ 23.852255] The buggy address belongs to the physical page: [ 23.852978] page:00000000afb3b883 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdfd9 [ 23.854169] memcg:ffff88800eaa1f01 [ 23.854623] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 23.855393] page_type: 0xffffffff() [ 23.855886] raw: 0100000000000200 ffff8880087a0c80 ffffea000038b180 dead000000000007 [ 23.856895] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800eaa1f01 [ 23.857880] page dumped because: kasan: bad access detected [ 23.858579] [ 23.858838] Memory state around the buggy address: [ 23.859469] ffff88800dfd9b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.860396] ffff88800dfd9b80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 23.861326] >ffff88800dfd9c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 23.862237] ^ [ 23.862823] ffff88800dfd9c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 23.863735] ffff88800dfd9d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 23.864633] ================================================================== [ 23.865657] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.174374] BUG: Bad rss-counter state mm:00000000ab272659 type:MM_FILEPAGES val:33 [ 26.175576] BUG: Bad rss-counter state mm:00000000ab272659 type:MM_ANONPAGES val:22 [ 26.602877] BUG: Bad rss-counter state mm:00000000d99ff3e5 type:MM_FILEPAGES val:33 [ 26.603861] BUG: Bad rss-counter state mm:00000000d99ff3e5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:37017' (ECDSA) to the list of known hosts. 2023/06/20 22:35:39 fuzzer started 2023/06/20 22:35:40 dialing manager at localhost:36067 2023/06/20 22:35:40 checking machine... 2023/06/20 22:35:40 checking revisions... [ 27.330632] kmemleak: Automatic memory scanning thread ended 2023/06/20 22:35:40 testing simple program... [ 27.390258] cgroup: Unknown subsys name 'net' [ 27.468008] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:35:39 Registers: info registers vcpu 0 RAX=0000000000000003 RBX=1ffff11002cd0ecf RCX=1ffffffff0ba7c92 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=0000000000000001 RSP=ffff888016687668 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000000 R13=0000000000000000 R14=ffff88800893ed98 R15=0000000000000000 RIP=ffffffff812d8f48 RFL=00000006 [-----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 00007f307b4c2700 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=00007ffd7efe3c58 CR3=000000001720c000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3732325b646873732039333a3533 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320323135 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=ffff88800d864670 RCX=ffffffff81370ce8 RDX=fffffbfff0ba7a6b RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=0000000000000200 RSP=ffff88800fd87ca0 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000001 R13=ffff88806cf3a3a8 R14=ffff88806cf3a2c0 R15=0000000000000000 RIP=ffffffff81370cf0 RFL=00000047 [---Z-PC] 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 00007f967cf66900 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=00007ffed551f000 CR3=0000000017360000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000