syzkaller login: [ 28.632989] BUG: Bad rss-counter state mm:0000000060870dc0 type:MM_FILEPAGES val:33 [ 28.634606] BUG: Bad rss-counter state mm:0000000060870dc0 type:MM_ANONPAGES val:22 [ 28.795275] ================================================================== [ 28.796412] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.797566] Read of size 8 at addr ffff88801839b058 by task sshd/219 [ 28.798601] [ 28.798867] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 28.799758] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.800760] Call Trace: [ 28.801079] [ 28.801369] dump_stack_lvl+0x91/0xf0 [ 28.801867] print_report+0xcc/0x620 [ 28.802350] ? __virt_addr_valid+0x102/0x340 [ 28.802908] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.803534] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.804165] kasan_report+0xbe/0xf0 [ 28.804644] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.805276] vma_interval_tree_remove+0xc75/0xec0 [ 28.805881] vma_prepare+0xc54/0x11a0 [ 28.806362] __split_vma+0x5af/0x950 [ 28.806837] ? __pfx___split_vma+0x10/0x10 [ 28.807364] ? find_held_lock+0x2c/0x110 [ 28.807916] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.808486] ? lock_is_held_type+0x9f/0x120 [ 28.809028] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.809637] ? mtree_range_walk+0x632/0x900 [ 28.810196] ? mas_walk+0x5c7/0x7c0 [ 28.810673] do_vmi_munmap+0x1f1/0x2b0 [ 28.811170] mmap_region+0x1f9/0x2660 [ 28.811665] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.812176] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.812895] ? __pfx_lock_acquire+0x10/0x10 [ 28.813421] ? __pfx_mmap_region+0x10/0x10 [ 28.813956] ? security_mmap_addr+0x7d/0xa0 [ 28.814485] ? get_unmapped_area+0x1f5/0x3f0 [ 28.815050] do_mmap+0x854/0xf00 [ 28.815508] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.816007] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.816566] ksys_mmap_pgoff+0x3af/0x500 [ 28.817075] do_syscall_64+0x3f/0x90 [ 28.817551] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.818209] RIP: 0033:0x7f29b905ed82 [ 28.818670] 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 [ 28.820838] RSP: 002b:00007ffc21c476a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.821763] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f29b905ed82 [ 28.822621] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f29b8498000 [ 28.823481] RBP: 00007f29b8498000 R08: 0000000000000009 R09: 0000000000001000 [ 28.824329] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c4e1e0aec0 [ 28.825188] R13: 00007ffc21c476c0 R14: 00007ffc21c476f0 R15: 00007ffc21c47a50 [ 28.826057] [ 28.826359] [ 28.826583] Allocated by task 212: [ 28.827031] kasan_save_stack+0x22/0x50 [ 28.827548] kasan_set_track+0x25/0x30 [ 28.828055] __kasan_slab_alloc+0x59/0x70 [ 28.828586] kmem_cache_alloc+0x16b/0x370 [ 28.829110] vm_area_dup+0x20/0x160 [ 28.829565] __split_vma+0x170/0x950 [ 28.830035] split_vma+0xc6/0x110 [ 28.830488] mprotect_fixup+0x8d2/0xb30 [ 28.831000] do_mprotect_pkey+0x87e/0xd40 [ 28.831553] __x64_sys_mprotect+0x78/0xc0 [ 28.832079] do_syscall_64+0x3f/0x90 [ 28.832558] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.833198] [ 28.833412] Freed by task 212: [ 28.833818] kasan_save_stack+0x22/0x50 [ 28.834334] kasan_set_track+0x25/0x30 [ 28.834835] kasan_save_free_info+0x2b/0x50 [ 28.835386] __kasan_slab_free+0x10a/0x190 [ 28.835942] kmem_cache_free+0x10d/0x4d0 [ 28.836452] rcu_core+0x8c8/0x2860 [ 28.836904] __do_softirq+0x1b7/0x7d4 [ 28.837388] [ 28.837611] Last potentially related work creation: [ 28.838213] kasan_save_stack+0x22/0x50 [ 28.838731] __kasan_record_aux_stack+0x8e/0xa0 [ 28.839307] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.839975] remove_vma+0x139/0x170 [ 28.840429] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.840999] do_vmi_munmap+0x1f1/0x2b0 [ 28.841495] __vm_munmap+0x138/0x3a0 [ 28.841970] __x64_sys_munmap+0x59/0x80 [ 28.842479] do_syscall_64+0x3f/0x90 [ 28.842955] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.843628] [ 28.843846] The buggy address belongs to the object at ffff88801839b000 [ 28.843846] which belongs to the cache vm_area_struct of size 168 [ 28.845319] The buggy address is located 88 bytes inside of [ 28.845319] freed 168-byte region [ffff88801839b000, ffff88801839b0a8) [ 28.846733] [ 28.846956] The buggy address belongs to the physical page: [ 28.847640] page:00000000a6f1321d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1839b [ 28.848755] memcg:ffff888019c75901 [ 28.849184] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.849828] page_type: 0xffffffff() [ 28.850289] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 28.851231] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888019c75901 [ 28.852162] page dumped because: kasan: bad access detected [ 28.852828] [ 28.853051] Memory state around the buggy address: [ 28.853629] ffff88801839af00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 28.854488] ffff88801839af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.855345] >ffff88801839b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.856200] ^ [ 28.856937] ffff88801839b080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 28.857796] ffff88801839b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.858659] ================================================================== [ 28.859636] Disabling lock debugging due to kernel taint [ 30.697548] BUG: Bad rss-counter state mm:000000005e5fae22 type:MM_FILEPAGES val:33 [ 30.698468] BUG: Bad rss-counter state mm:000000005e5fae22 type:MM_ANONPAGES val:22 [ 31.158908] BUG: Bad rss-counter state mm:00000000373f7a54 type:MM_FILEPAGES val:33 [ 31.160422] BUG: Bad rss-counter state mm:00000000373f7a54 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:48278' (ECDSA) to the list of known hosts. 2023/06/19 23:55:01 fuzzer started 2023/06/19 23:55:01 dialing manager at localhost:44161 2023/06/19 23:55:01 checking machine... 2023/06/19 23:55:01 checking revisions... [ 31.876779] kmemleak: Automatic memory scanning thread ended 2023/06/19 23:55:01 testing simple program... [ 31.916518] cgroup: Unknown subsys name 'net' [ 31.965799] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 23:54:56 Registers: info registers vcpu 0 RAX=1ffffffff0c09a5a RBX=ffffffff8604d2d0 RCX=ffffffff84506c7e RDX=0000000000000000 RSI=ffffffff864b0222 RDI=ffffffff8604d2b8 RBP=ffffffff8604d2b8 RSP=ffff88800d81f6a0 R8 =ffffffff864b0222 R9 =ffff88800d81f798 R10=0000000000038001 R11=00000000000b4fb9 R12=ffffffff8604d2e8 R13=ffffffff8604d2b8 R14=ffffffff8604d2b8 R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000216 [----AP-] 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 00007fa43e96e900 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=00007fff78cc2000 CR3=000000001a268000 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=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 info registers vcpu 1 RAX=0000000000000058 RBX=0000000000000000 RCX=0000000000000000 RDX=00000000000103f6 RSI=ffffffff821920cb RDI=0000000000000007 RBP=00000000000103f6 RSP=ffff88800f59f7c8 R8 =0000000000000007 R9 =0000000000010000 R10=00000000000103f6 R11=0000000000000128 R12=00000000000103f6 R13=ffff88800bbe81a0 R14=0000000000000000 R15=dffffc0000000000 RIP=ffffffff821920cf RFL=00000093 [--S-A-C] 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=00007f765778ced0 CR3=000000000d61c000 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=ec4c2342334601b26e440ff9814b13b5 XMM02=eff9b2d0a8fce9cb000000000011cac0 XMM03=2c67c8bc2e329bc3000000000011cbe8 XMM04=f28c8bf277b2da6900000000000ae988 XMM05=5e66afbb7b40da7200000000001345a8 XMM06=806171799158d9670000000000133028 XMM07=fb795ef6d65770560000000000123630 XMM08=2c67c8bc2e329bc3000000000011cbe8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000