syzkaller login: [ 28.871760] BUG: Bad rss-counter state mm:00000000f51a6648 type:MM_FILEPAGES val:33 [ 28.872948] BUG: Bad rss-counter state mm:00000000f51a6648 type:MM_ANONPAGES val:22 [ 28.913178] ================================================================== [ 28.914264] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.915248] Read of size 8 at addr ffff888009998880 by task sshd/220 [ 28.916056] [ 28.916288] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.917191] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.918229] Call Trace: [ 28.918565] [ 28.918863] dump_stack_lvl+0x91/0xf0 [ 28.919376] print_report+0xcc/0x620 [ 28.919883] ? __virt_addr_valid+0x102/0x340 [ 28.920463] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.921117] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.921785] kasan_report+0xbe/0xf0 [ 28.922280] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.922936] vma_interval_tree_remove+0xc75/0xec0 [ 28.923568] vma_prepare+0xc54/0x11a0 [ 28.924071] __split_vma+0x5af/0x950 [ 28.924565] ? __pfx___split_vma+0x10/0x10 [ 28.925122] ? find_held_lock+0x2c/0x110 [ 28.925647] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.926195] ? lock_is_held_type+0x9f/0x120 [ 28.926706] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.927277] ? mtree_range_walk+0x632/0x900 [ 28.927799] ? mas_walk+0x5c7/0x7c0 [ 28.928250] do_vmi_munmap+0x1f1/0x2b0 [ 28.928718] mmap_region+0x1f9/0x2660 [ 28.929179] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.929659] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.930356] ? __pfx_lock_acquire+0x10/0x10 [ 28.930859] ? __pfx_mmap_region+0x10/0x10 [ 28.931364] ? security_mmap_addr+0x7d/0xa0 [ 28.931865] ? get_unmapped_area+0x1f5/0x3f0 [ 28.932381] do_mmap+0x854/0xf00 [ 28.932802] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.933271] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.933809] ksys_mmap_pgoff+0x3af/0x500 [ 28.934291] do_syscall_64+0x3f/0x90 [ 28.934750] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.935370] RIP: 0033:0x7f5fdd074d82 [ 28.935809] 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 [ 28.937940] RSP: 002b:00007ffc9123d418 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.938841] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5fdd074d82 [ 28.939717] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5fdc4ae000 [ 28.940726] RBP: 00007f5fdc4ae000 R08: 0000000000000009 R09: 0000000000001000 [ 28.941574] R10: 0000000000000812 R11: 0000000000000206 R12: 00005632a49b7d90 [ 28.942446] R13: 00007ffc9123d430 R14: 00007ffc9123d460 R15: 00007ffc9123d7c0 [ 28.943309] [ 28.943608] [ 28.943824] Allocated by task 212: [ 28.944248] kasan_save_stack+0x22/0x50 [ 28.944758] kasan_set_track+0x25/0x30 [ 28.945261] __kasan_slab_alloc+0x59/0x70 [ 28.945810] kmem_cache_alloc+0x16b/0x370 [ 28.946330] vm_area_dup+0x20/0x160 [ 28.946783] __split_vma+0x170/0x950 [ 28.947255] split_vma+0xc6/0x110 [ 28.947694] mprotect_fixup+0x8d2/0xb30 [ 28.948200] do_mprotect_pkey+0x87e/0xd40 [ 28.948734] __x64_sys_mprotect+0x78/0xc0 [ 28.949262] do_syscall_64+0x3f/0x90 [ 28.949753] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.950406] [ 28.950620] Freed by task 212: [ 28.951020] kasan_save_stack+0x22/0x50 [ 28.951524] kasan_set_track+0x25/0x30 [ 28.952024] kasan_save_free_info+0x2b/0x50 [ 28.952559] __kasan_slab_free+0x10a/0x190 [ 28.953100] kmem_cache_free+0x10d/0x4d0 [ 28.953621] rcu_core+0x8c8/0x2860 [ 28.954101] __do_softirq+0x1b7/0x7d4 [ 28.954588] [ 28.954814] Last potentially related work creation: [ 28.955418] kasan_save_stack+0x22/0x50 [ 28.955933] __kasan_record_aux_stack+0x8e/0xa0 [ 28.956503] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.957152] remove_vma+0x139/0x170 [ 28.957614] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.958179] do_vmi_munmap+0x1f1/0x2b0 [ 28.958673] __vm_munmap+0x138/0x3a0 [ 28.959151] __x64_sys_munmap+0x59/0x80 [ 28.959638] do_syscall_64+0x3f/0x90 [ 28.960123] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.960784] [ 28.961007] Second to last potentially related work creation: [ 28.961706] kasan_save_stack+0x22/0x50 [ 28.962217] __kasan_record_aux_stack+0x8e/0xa0 [ 28.962804] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.963466] remove_vma+0x139/0x170 [ 28.963931] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.964494] do_vmi_munmap+0x1f1/0x2b0 [ 28.964988] mmap_region+0x1f9/0x2660 [ 28.965470] do_mmap+0x854/0xf00 [ 28.965933] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.966438] ksys_mmap_pgoff+0x3af/0x500 [ 28.966946] do_syscall_64+0x3f/0x90 [ 28.967425] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.968086] [ 28.968312] The buggy address belongs to the object at ffff888009998828 [ 28.968312] which belongs to the cache vm_area_struct of size 168 [ 28.969817] The buggy address is located 88 bytes inside of [ 28.969817] freed 168-byte region [ffff888009998828, ffff8880099988d0) [ 28.971275] [ 28.971497] The buggy address belongs to the physical page: [ 28.972188] page:00000000faca1e73 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x9998 [ 28.973325] memcg:ffff88800f19d601 [ 28.973777] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.974450] page_type: 0xffffffff() [ 28.974917] raw: 0100000000000200 ffff8880087a0c80 dead000000000100 dead000000000122 [ 28.975869] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f19d601 [ 28.976791] page dumped because: kasan: bad access detected [ 28.977459] [ 28.977682] Memory state around the buggy address: [ 28.978305] ffff888009998780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 28.979200] ffff888009998800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 28.980090] >ffff888009998880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 28.980971] ^ [ 28.981400] ffff888009998900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.982313] ffff888009998980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 28.983204] ================================================================== [ 28.984296] Disabling lock debugging due to kernel taint [ 30.539536] BUG: Bad rss-counter state mm:00000000957108d2 type:MM_FILEPAGES val:33 [ 30.540291] BUG: Bad rss-counter state mm:00000000957108d2 type:MM_ANONPAGES val:22 [ 31.049895] BUG: Bad rss-counter state mm:00000000194815bc type:MM_FILEPAGES val:33 [ 31.051086] BUG: Bad rss-counter state mm:00000000194815bc type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:10569' (ECDSA) to the list of known hosts. 2023/06/21 02:57:50 fuzzer started 2023/06/21 02:57:50 dialing manager at localhost:36067 2023/06/21 02:57:50 checking machine... 2023/06/21 02:57:50 checking revisions... [ 31.759434] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:57:50 testing simple program... [ 31.814279] cgroup: Unknown subsys name 'net' [ 31.866287] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:57:49 Registers: info registers vcpu 0 RAX=0000000000000010 RBX=0000000000000010 RCX=0000000000000010 RDX=0000000000000022 RSI=00007fb56de46060 RDI=00007ffec0bddf17 RBP=0000000000000d68 RSP=00007ffec0bdd550 R8 =00000000ffffffff R9 =0000000000000097 R10=00007fb56de46060 R11=0000000000000000 R12=00007fb56d89f8a0 R13=00007ffec0bddb10 R14=0000000000000010 R15=00007fb56de46060 RIP=00007fb56d762c34 RFL=00000206 [-----P-] 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 00007fb56d2ec900 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=00007fb56d8a3618 CR3=000000000e8ec000 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=00000000000000000000000000000000 XMM02=00000000000000000000000000000000 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=682073253d65786520227325223d7463 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 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=00007f98b20421f0 CR3=000000000d716000 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=00000000000000000000000000000000 XMM01=d7cfdac77ad41a87814860a36ebb3578 XMM02=2c67c8bc2e329bc3000000000011a8a0 XMM03=fb795ef6d657705600000000001215f0 XMM04=6d3823b8fbae33cd00000000000ae988 XMM05=59d5b690e0af863b0000000000132f68 XMM06=c0bc3bb4185508770000000000131dd0 XMM07=e042d86d42eb936e00000000001218c8 XMM08=46218cd11578faca000000000011a900 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000