[ 24.181244] BUG: Bad rss-counter state mm:0000000061fcc53c type:MM_FILEPAGES val:33 [ 24.182365] BUG: Bad rss-counter state mm:0000000061fcc53c type:MM_ANONPAGES val:22 [ 24.325128] ================================================================== [ 24.326011] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.326911] Read of size 8 at addr ffff88800978c5c8 by task sshd/219 [ 24.327644] [ 24.327852] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.328960] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.330181] Call Trace: [ 24.330595] [ 24.330942] dump_stack_lvl+0x91/0xf0 [ 24.331540] print_report+0xcc/0x620 [ 24.332130] ? __virt_addr_valid+0x102/0x340 [ 24.332818] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.333588] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.334342] kasan_report+0xbe/0xf0 [ 24.334917] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.335666] vma_interval_tree_remove+0xc75/0xec0 [ 24.336397] vma_prepare+0xc54/0x11a0 [ 24.336987] __split_vma+0x5af/0x950 [ 24.337547] ? __pfx___split_vma+0x10/0x10 [ 24.338179] ? find_held_lock+0x2c/0x110 [ 24.338803] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.339491] ? lock_is_held_type+0x9f/0x120 [ 24.340135] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.340873] ? mtree_range_walk+0x632/0x900 [ 24.341567] ? mas_walk+0x5c7/0x7c0 [ 24.342127] do_vmi_munmap+0x1f1/0x2b0 [ 24.342719] mmap_region+0x1f9/0x2660 [ 24.343295] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.343906] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.344763] ? __pfx_lock_acquire+0x10/0x10 [ 24.345408] ? __pfx_mmap_region+0x10/0x10 [ 24.346053] ? security_mmap_addr+0x7d/0xa0 [ 24.346696] ? get_unmapped_area+0x1f5/0x3f0 [ 24.347360] do_mmap+0x854/0xf00 [ 24.347880] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.348472] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.349164] ksys_mmap_pgoff+0x3af/0x500 [ 24.349777] do_syscall_64+0x3f/0x90 [ 24.350350] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.351133] RIP: 0033:0x7fd722bf1d82 [ 24.351682] 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 [ 24.354293] RSP: 002b:00007ffced923c38 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.355390] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd722bf1d82 [ 24.356429] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd72202b000 [ 24.357473] RBP: 00007fd72202b000 R08: 0000000000000009 R09: 0000000000001000 [ 24.358509] R10: 0000000000000812 R11: 0000000000000206 R12: 00005614815f7d90 [ 24.359546] R13: 00007ffced923c50 R14: 00007ffced923c80 R15: 00007ffced923fe0 [ 24.360597] [ 24.360953] [ 24.361211] Allocated by task 212: [ 24.361716] kasan_save_stack+0x22/0x50 [ 24.362319] kasan_set_track+0x25/0x30 [ 24.362908] __kasan_slab_alloc+0x59/0x70 [ 24.363541] kmem_cache_alloc+0x16b/0x370 [ 24.364165] vm_area_dup+0x20/0x160 [ 24.364707] __split_vma+0x170/0x950 [ 24.365289] split_vma+0xc6/0x110 [ 24.365808] mprotect_fixup+0x8d2/0xb30 [ 24.366411] do_mprotect_pkey+0x87e/0xd40 [ 24.367038] __x64_sys_mprotect+0x78/0xc0 [ 24.367667] do_syscall_64+0x3f/0x90 [ 24.368240] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.369030] [ 24.369294] Freed by task 203: [ 24.369759] kasan_save_stack+0x22/0x50 [ 24.370363] kasan_set_track+0x25/0x30 [ 24.370965] kasan_save_free_info+0x2b/0x50 [ 24.371605] __kasan_slab_free+0x10a/0x190 [ 24.372237] kmem_cache_free+0x10d/0x4d0 [ 24.372849] rcu_core+0x8c8/0x2860 [ 24.373394] __do_softirq+0x1b7/0x7d4 [ 24.373955] [ 24.374205] Last potentially related work creation: [ 24.374900] kasan_save_stack+0x22/0x50 [ 24.375498] __kasan_record_aux_stack+0x8e/0xa0 [ 24.376192] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.376975] remove_vma+0x139/0x170 [ 24.377424] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.377975] do_vmi_munmap+0x1f1/0x2b0 [ 24.378450] __vm_munmap+0x138/0x3a0 [ 24.378917] __x64_sys_munmap+0x59/0x80 [ 24.379418] do_syscall_64+0x3f/0x90 [ 24.379893] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.380523] [ 24.380738] Second to last potentially related work creation: [ 24.381422] kasan_save_stack+0x22/0x50 [ 24.381954] __kasan_record_aux_stack+0x8e/0xa0 [ 24.382660] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.383451] remove_vma+0x139/0x170 [ 24.384007] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.384686] do_vmi_munmap+0x1f1/0x2b0 [ 24.385300] mmap_region+0x1f9/0x2660 [ 24.385896] do_mmap+0x854/0xf00 [ 24.386422] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.387030] ksys_mmap_pgoff+0x3af/0x500 [ 24.387647] do_syscall_64+0x3f/0x90 [ 24.388234] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.389044] [ 24.389308] The buggy address belongs to the object at ffff88800978c570 [ 24.389308] which belongs to the cache vm_area_struct of size 168 [ 24.391120] The buggy address is located 88 bytes inside of [ 24.391120] freed 168-byte region [ffff88800978c570, ffff88800978c618) [ 24.392851] [ 24.393129] The buggy address belongs to the physical page: [ 24.393940] page:000000003ef57f60 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x978c [ 24.395285] memcg:ffff8880098a9501 [ 24.395811] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 24.396673] page_type: 0xffffffff() [ 24.397257] raw: 0100000000000200 ffff88800879fc80 ffffea00002551c0 dead000000000007 [ 24.398392] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880098a9501 [ 24.399503] page dumped because: kasan: bad access detected [ 24.400316] [ 24.400580] Memory state around the buggy address: [ 24.401312] ffff88800978c480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.402363] ffff88800978c500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 24.403412] >ffff88800978c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.404453] ^ [ 24.405303] ffff88800978c600: fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 [ 24.406356] ffff88800978c680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.407352] ================================================================== [ 24.408414] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 27.425616] BUG: Bad rss-counter state mm:000000000fb0e37e type:MM_FILEPAGES val:33 [ 27.426617] BUG: Bad rss-counter state mm:000000000fb0e37e type:MM_ANONPAGES val:22 [ 27.842696] BUG: Bad rss-counter state mm:00000000233c3bfd type:MM_FILEPAGES val:33 [ 27.843702] BUG: Bad rss-counter state mm:00000000233c3bfd type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4655' (ECDSA) to the list of known hosts. 2023/06/19 13:18:06 fuzzer started 2023/06/19 13:18:06 dialing manager at localhost:44161 2023/06/19 13:18:06 checking machine... 2023/06/19 13:18:06 checking revisions... [ 28.591250] kmemleak: Automatic memory scanning thread ended 2023/06/19 13:18:06 testing simple program... [ 28.632180] cgroup: Unknown subsys name 'net' [ 28.674641] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 13:18:05 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f 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 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=00007f7b6a071000 CR3=000000000cae4000 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=2035303a38313a3331203931206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732035303a38313a3331203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff812d8ec8 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff8880094f7c01 RSI=ffff8880094f7ba8 RDI=ffff8880094f7c28 RBP=ffff88806cf09ac8 RSP=ffff88806cf099f8 R8 =ffffffff864bb032 R9 =ffff88806cf09ab0 R10=0000000000038001 R11=00000000000b6cb2 R12=ffff88806cf09ad0 R13=ffff88806cf09ab8 R14=ffff8880094f7ba8 R15=ffff88806cf09a70 RIP=ffffffff8112fbf3 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f5acdeee900 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=000055e2cdc6414c CR3=000000000d9ba000 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=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