[ 30.563726] BUG: Bad rss-counter state mm:000000000991bad5 type:MM_FILEPAGES val:33 [ 30.564910] BUG: Bad rss-counter state mm:000000000991bad5 type:MM_ANONPAGES val:22 [ 30.750967] ================================================================== [ 30.751912] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.752885] Read of size 8 at addr ffff88801bc2fb38 by task sshd/218 [ 30.753762] [ 30.753989] CPU: 0 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.754881] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.755902] Call Trace: [ 30.756229] [ 30.756521] dump_stack_lvl+0x91/0xf0 [ 30.757025] print_report+0xcc/0x620 [ 30.757545] ? __virt_addr_valid+0x102/0x340 [ 30.758122] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.758772] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.759415] kasan_report+0xbe/0xf0 [ 30.759906] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.760546] vma_interval_tree_remove+0xc75/0xec0 [ 30.761170] vma_prepare+0xc54/0x11a0 [ 30.761658] __split_vma+0x5af/0x950 [ 30.762139] ? __pfx___split_vma+0x10/0x10 [ 30.762678] ? find_held_lock+0x2c/0x110 [ 30.763232] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.763828] ? lock_is_held_type+0x9f/0x120 [ 30.764380] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.764998] ? mtree_range_walk+0x632/0x900 [ 30.765580] ? mas_walk+0x5c7/0x7c0 [ 30.766064] do_vmi_munmap+0x1f1/0x2b0 [ 30.766566] mmap_region+0x1f9/0x2660 [ 30.767059] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.767578] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.768319] ? __pfx_lock_acquire+0x10/0x10 [ 30.768863] ? __pfx_mmap_region+0x10/0x10 [ 30.769408] ? security_mmap_addr+0x7d/0xa0 [ 30.769950] ? get_unmapped_area+0x1f5/0x3f0 [ 30.770507] do_mmap+0x854/0xf00 [ 30.770957] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.771459] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.772030] ksys_mmap_pgoff+0x3af/0x500 [ 30.772545] do_syscall_64+0x3f/0x90 [ 30.773032] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.773702] RIP: 0033:0x7fd1b74d5d82 [ 30.774194] 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 [ 30.776387] RSP: 002b:00007ffcc259f6c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.777335] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd1b74d5d82 [ 30.778208] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd1b690f000 [ 30.779077] RBP: 00007fd1b690f000 R08: 0000000000000009 R09: 0000000000001000 [ 30.779960] R10: 0000000000000812 R11: 0000000000000206 R12: 0000557900f07ec0 [ 30.780829] R13: 00007ffcc259f6e0 R14: 00007ffcc259f710 R15: 00007ffcc259fa70 [ 30.781716] [ 30.782009] [ 30.782232] Allocated by task 209: [ 30.782667] kasan_save_stack+0x22/0x50 [ 30.783182] kasan_set_track+0x25/0x30 [ 30.783688] __kasan_slab_alloc+0x59/0x70 [ 30.784213] kmem_cache_alloc+0x16b/0x370 [ 30.784730] vm_area_dup+0x20/0x160 [ 30.785197] __split_vma+0x170/0x950 [ 30.785679] split_vma+0xc6/0x110 [ 30.786126] mprotect_fixup+0x8d2/0xb30 [ 30.786631] do_mprotect_pkey+0x87e/0xd40 [ 30.787162] __x64_sys_mprotect+0x78/0xc0 [ 30.787688] do_syscall_64+0x3f/0x90 [ 30.788166] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.788827] [ 30.789043] Freed by task 209: [ 30.789452] kasan_save_stack+0x22/0x50 [ 30.789958] kasan_set_track+0x25/0x30 [ 30.790454] kasan_save_free_info+0x2b/0x50 [ 30.791016] __kasan_slab_free+0x10a/0x190 [ 30.791567] kmem_cache_free+0x10d/0x4d0 [ 30.792088] rcu_core+0x8c8/0x2860 [ 30.792548] __do_softirq+0x1b7/0x7d4 [ 30.793032] [ 30.793274] Last potentially related work creation: [ 30.793860] kasan_save_stack+0x22/0x50 [ 30.794369] __kasan_record_aux_stack+0x8e/0xa0 [ 30.794953] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.795614] remove_vma+0x139/0x170 [ 30.796071] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.796636] do_vmi_munmap+0x1f1/0x2b0 [ 30.797129] __vm_munmap+0x138/0x3a0 [ 30.797606] __x64_sys_munmap+0x59/0x80 [ 30.798108] do_syscall_64+0x3f/0x90 [ 30.798602] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.799257] [ 30.799477] The buggy address belongs to the object at ffff88801bc2fae0 [ 30.799477] which belongs to the cache vm_area_struct of size 168 [ 30.800956] The buggy address is located 88 bytes inside of [ 30.800956] freed 168-byte region [ffff88801bc2fae0, ffff88801bc2fb88) [ 30.802383] [ 30.802602] The buggy address belongs to the physical page: [ 30.803256] page:00000000a56d324a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1bc2f [ 30.804357] memcg:ffff88801bc06a01 [ 30.804784] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.805438] page_type: 0xffffffff() [ 30.805883] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.806801] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801bc06a01 [ 30.807722] page dumped because: kasan: bad access detected [ 30.808396] [ 30.808617] Memory state around the buggy address: [ 30.809199] ffff88801bc2fa00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.810047] ffff88801bc2fa80: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb [ 30.810898] >ffff88801bc2fb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.811747] ^ [ 30.812341] ffff88801bc2fb80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 30.813199] ffff88801bc2fc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 30.814039] ================================================================== [ 30.815073] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 32.608850] BUG: Bad rss-counter state mm:00000000df2bdc90 type:MM_FILEPAGES val:33 [ 32.610164] BUG: Bad rss-counter state mm:00000000df2bdc90 type:MM_ANONPAGES val:22 [ 33.069771] BUG: Bad rss-counter state mm:000000007e7a2f87 type:MM_FILEPAGES val:33 [ 33.070950] BUG: Bad rss-counter state mm:000000007e7a2f87 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18052' (ECDSA) to the list of known hosts. 2023/06/20 16:45:13 fuzzer started 2023/06/20 16:45:13 dialing manager at localhost:36067 2023/06/20 16:45:13 checking machine... 2023/06/20 16:45:13 checking revisions... [ 33.740951] kmemleak: Automatic memory scanning thread ended 2023/06/20 16:45:13 testing simple program... [ 33.792839] cgroup: Unknown subsys name 'net' [ 33.834407] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:45:13 Registers: info registers vcpu 0 RAX=ffff888018458000 RBX=00007ffd70328298 RCX=ffffffff864bbb54 RDX=1ffff1100308aee1 RSI=0000000000000000 RDI=ffff888018457708 RBP=ffff888018450000 RSP=ffff888018457688 R8 =ffffffff864bbb58 R9 =ffff888018457738 R10=0000000000038001 R11=00000000000b6a61 R12=ffff888018457f58 R13=ffff888018457740 R14=ffff888018457f58 R15=ffff8880184576f8 RIP=ffffffff8113128d RFL=00000286 [--S--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 00007f1f49979900 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=00007ffd70329000 CR3=000000000f24a000 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=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=00007f0cd4cfb3b0 CR3=0000000016538000 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=2032313a35343a3631203032206e754a XMM01=73732878696e755f6d6170203a5d3732 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3732325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732032313a35343a3631203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000