syzkaller login: [ 65.191141] BUG: Bad rss-counter state mm:00000000e0d20dda type:MM_FILEPAGES val:33 [ 65.192169] BUG: Bad rss-counter state mm:00000000e0d20dda type:MM_ANONPAGES val:22 [ 65.353748] ================================================================== [ 65.354838] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 65.355954] Read of size 8 at addr ffff88800dfe7140 by task sshd/220 [ 65.356805] [ 65.357024] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 65.357881] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 65.358890] Call Trace: [ 65.359226] [ 65.359510] dump_stack_lvl+0x91/0xf0 [ 65.360015] print_report+0xcc/0x620 [ 65.360505] ? __virt_addr_valid+0x102/0x340 [ 65.361055] ? vma_interval_tree_remove+0xc75/0xec0 [ 65.361676] ? vma_interval_tree_remove+0xc75/0xec0 [ 65.362286] kasan_report+0xbe/0xf0 [ 65.362763] ? vma_interval_tree_remove+0xc75/0xec0 [ 65.363390] vma_interval_tree_remove+0xc75/0xec0 [ 65.363999] vma_prepare+0xc54/0x11a0 [ 65.364481] __split_vma+0x5af/0x950 [ 65.364961] ? __pfx___split_vma+0x10/0x10 [ 65.365492] ? find_held_lock+0x2c/0x110 [ 65.366013] do_vmi_align_munmap+0x2ba/0x11f0 [ 65.366577] ? lock_is_held_type+0x9f/0x120 [ 65.367137] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 65.367744] ? mtree_range_walk+0x632/0x900 [ 65.368304] ? mas_walk+0x5c7/0x7c0 [ 65.368774] do_vmi_munmap+0x1f1/0x2b0 [ 65.369263] mmap_region+0x1f9/0x2660 [ 65.369742] ? vm_mmap_pgoff+0x15c/0x3a0 [ 65.370260] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 65.370981] ? __pfx_lock_acquire+0x10/0x10 [ 65.371513] ? __pfx_mmap_region+0x10/0x10 [ 65.372042] ? security_mmap_addr+0x7d/0xa0 [ 65.372569] ? get_unmapped_area+0x1f5/0x3f0 [ 65.373116] do_mmap+0x854/0xf00 [ 65.373552] vm_mmap_pgoff+0x1a6/0x3a0 [ 65.374043] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 65.374601] ksys_mmap_pgoff+0x3af/0x500 [ 65.375129] do_syscall_64+0x3f/0x90 [ 65.375604] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 65.376253] RIP: 0033:0x7f6cfa552d82 [ 65.376713] 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 [ 65.378838] RSP: 002b:00007ffe73b03858 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 65.379784] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f6cfa552d82 [ 65.380628] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f6cf998c000 [ 65.381477] RBP: 00007f6cf998c000 R08: 0000000000000009 R09: 0000000000001000 [ 65.382331] R10: 0000000000000812 R11: 0000000000000206 R12: 00005608c70d7ec0 [ 65.383180] R13: 00007ffe73b03870 R14: 00007ffe73b038a0 R15: 00007ffe73b03c00 [ 65.384066] [ 65.384357] [ 65.384575] Allocated by task 213: [ 65.385007] kasan_save_stack+0x22/0x50 [ 65.385519] kasan_set_track+0x25/0x30 [ 65.386011] __kasan_slab_alloc+0x59/0x70 [ 65.386536] kmem_cache_alloc+0x16b/0x370 [ 65.387070] vm_area_dup+0x20/0x160 [ 65.387530] __split_vma+0x170/0x950 [ 65.388001] split_vma+0xc6/0x110 [ 65.388442] mprotect_fixup+0x8d2/0xb30 [ 65.388941] do_mprotect_pkey+0x87e/0xd40 [ 65.389466] __x64_sys_mprotect+0x78/0xc0 [ 65.389987] do_syscall_64+0x3f/0x90 [ 65.390462] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 65.391112] [ 65.391327] Freed by task 204: [ 65.391722] kasan_save_stack+0x22/0x50 [ 65.392223] kasan_set_track+0x25/0x30 [ 65.392712] kasan_save_free_info+0x2b/0x50 [ 65.393252] __kasan_slab_free+0x10a/0x190 [ 65.393780] kmem_cache_free+0x10d/0x4d0 [ 65.394289] rcu_core+0x8c8/0x2860 [ 65.394734] __do_softirq+0x1b7/0x7d4 [ 65.395211] [ 65.395433] Last potentially related work creation: [ 65.396024] kasan_save_stack+0x22/0x50 [ 65.396522] __kasan_record_aux_stack+0x8e/0xa0 [ 65.397097] __call_rcu_common.constprop.0+0x6a/0xb90 [ 65.397736] remove_vma+0x139/0x170 [ 65.398185] do_vmi_align_munmap+0xd4a/0x11f0 [ 65.398744] do_vmi_munmap+0x1f1/0x2b0 [ 65.399242] __vm_munmap+0x138/0x3a0 [ 65.399706] __x64_sys_munmap+0x59/0x80 [ 65.400210] do_syscall_64+0x3f/0x90 [ 65.400680] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 65.401320] [ 65.401535] Second to last potentially related work creation: [ 65.402220] kasan_save_stack+0x22/0x50 [ 65.402728] __kasan_record_aux_stack+0x8e/0xa0 [ 65.403308] __call_rcu_common.constprop.0+0x6a/0xb90 [ 65.403950] remove_vma+0x139/0x170 [ 65.404408] do_vmi_align_munmap+0xd4a/0x11f0 [ 65.404964] do_vmi_munmap+0x1f1/0x2b0 [ 65.405448] mmap_region+0x1f9/0x2660 [ 65.405922] do_mmap+0x854/0xf00 [ 65.406351] vm_mmap_pgoff+0x1a6/0x3a0 [ 65.406862] ksys_mmap_pgoff+0x7d/0x500 [ 65.407373] do_syscall_64+0x3f/0x90 [ 65.407845] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 65.408489] [ 65.408712] The buggy address belongs to the object at ffff88800dfe70e8 [ 65.408712] which belongs to the cache vm_area_struct of size 168 [ 65.410201] The buggy address is located 88 bytes inside of [ 65.410201] freed 168-byte region [ffff88800dfe70e8, ffff88800dfe7190) [ 65.411613] [ 65.411829] The buggy address belongs to the physical page: [ 65.412483] page:000000007f6fde89 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdfe7 [ 65.413573] memcg:ffff88800dc8c001 [ 65.414000] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 65.414701] page_type: 0xffffffff() [ 65.415157] raw: 0100000000000200 ffff88800879fc80 0000000000000000 dead000000000001 [ 65.416070] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dc8c001 [ 65.416970] page dumped because: kasan: bad access detected [ 65.417628] [ 65.417845] Memory state around the buggy address: [ 65.418428] ffff88800dfe7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 65.419301] ffff88800dfe7080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 65.420149] >ffff88800dfe7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 65.420995] ^ [ 65.421640] ffff88800dfe7180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 65.422511] ffff88800dfe7200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 65.423377] ================================================================== [ 65.424344] Disabling lock debugging due to kernel taint [ 67.135035] BUG: Bad rss-counter state mm:0000000010a5f76f type:MM_FILEPAGES val:33 [ 67.135808] BUG: Bad rss-counter state mm:0000000010a5f76f type:MM_ANONPAGES val:22 [ 67.568969] BUG: Bad rss-counter state mm:00000000d656a6fe type:MM_FILEPAGES val:33 [ 67.569968] BUG: Bad rss-counter state mm:00000000d656a6fe type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:10867' (ECDSA) to the list of known hosts. 2023/06/19 22:48:39 fuzzer started 2023/06/19 22:48:40 dialing manager at localhost:44161 2023/06/19 22:48:40 checking machine... 2023/06/19 22:48:40 checking revisions... [ 68.318339] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:48:40 testing simple program... [ 68.366533] cgroup: Unknown subsys name 'net' [ 68.430832] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:48:13 Registers: info registers vcpu 0 RAX=ffffea000064bd40 RBX=ffff8880192f5a40 RCX=ffffea0000000000 RDX=ffffea000064bd01 RSI=ffffffff818d9dc6 RDI=ffff8880087c7280 RBP=ffff88800e37fd88 RSP=ffff88800e37fd60 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6cb2 R12=ffff8880087c7280 R13=ffff8880992f5a40 R14=ffffffff818d9dc6 R15=ffff8880192f5c70 RIP=ffffffff818098cf RFL=00000282 [--S----] 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f011f5a88c0 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=00007fcd10b940b0 CR3=000000000ea0a000 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=25252525252525252525252525252525 XMM01=00000000000000ff0000000000ff0000 XMM02=00000000000000ff0000000000ff0000 XMM03=000055a76f0e3030000055a76f0e2f90 XMM04=0000000300000000000055a76f0e3030 XMM05=000055a76f0bfae0000055a76f0cdb10 XMM06=0000000000000000ffffffff00000003 XMM07=00000000000000000000000000000000 XMM08=732f636f72702f006b63616d7300632e XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080000001 RBX=ffffea0001b393c0 RCX=0000000080000001 RDX=ffff88800dbb0000 RSI=ffffffff8170c3a6 RDI=0000000000000001 RBP=000000000000001c RSP=ffff8880175a7638 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000001 R12=000000000000001b R13=00007fd36bc88000 R14=ffff88800cc0c438 R15=dffffc0000000000 RIP=ffffffff814c07f1 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 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=00007f6e6009c180 CR3=000000000edb2000 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=16a00630583896aad9467a0643f01617 XMM02=ec2efd57dc4c00df000000000011e8d0 XMM03=8f29a81b446ad8a6000000000011e9a0 XMM04=7b523b987bbeff6f00000000000ae988 XMM05=19e9129bd510f2350000000000135828 XMM06=2cec2f722332cc5d0000000000134d08 XMM07=e042d86d42eb936e0000000000124e40 XMM08=8f29a81b446ad8a6000000000011e9a0 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000