[ 32.692287] BUG: Bad rss-counter state mm:00000000908a266f type:MM_FILEPAGES val:33 [ 32.693520] BUG: Bad rss-counter state mm:00000000908a266f type:MM_ANONPAGES val:22 [ 32.730020] ================================================================== [ 32.731059] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.732001] Read of size 8 at addr ffff88800e06aed8 by task sshd/219 [ 32.732775] [ 32.732992] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.733845] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.734820] Call Trace: [ 32.735136] [ 32.735421] dump_stack_lvl+0x91/0xf0 [ 32.735920] print_report+0xcc/0x620 [ 32.736404] ? __virt_addr_valid+0x102/0x340 [ 32.736956] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.737577] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.738219] kasan_report+0xbe/0xf0 [ 32.738701] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.739322] vma_interval_tree_remove+0xc75/0xec0 [ 32.739927] vma_prepare+0xc54/0x11a0 [ 32.740409] __split_vma+0x5af/0x950 [ 32.740882] ? __pfx___split_vma+0x10/0x10 [ 32.741406] ? find_held_lock+0x2c/0x110 [ 32.741925] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.742517] ? lock_is_held_type+0x9f/0x120 [ 32.743053] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.743656] ? mtree_range_walk+0x632/0x900 [ 32.744203] ? mas_walk+0x5c7/0x7c0 [ 32.744673] do_vmi_munmap+0x1f1/0x2b0 [ 32.745167] mmap_region+0x1f9/0x2660 [ 32.745650] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.746162] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.746875] ? __pfx_lock_acquire+0x10/0x10 [ 32.747411] ? __pfx_mmap_region+0x10/0x10 [ 32.747941] ? security_mmap_addr+0x7d/0xa0 [ 32.748477] ? get_unmapped_area+0x1f5/0x3f0 [ 32.749025] do_mmap+0x854/0xf00 [ 32.749491] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.750001] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.750577] ksys_mmap_pgoff+0x3af/0x500 [ 32.751086] do_syscall_64+0x3f/0x90 [ 32.751575] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.752218] RIP: 0033:0x7f206be39d82 [ 32.752675] 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 [ 32.754822] RSP: 002b:00007fff83737f18 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.755726] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f206be39d82 [ 32.756576] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f206b273000 [ 32.757422] RBP: 00007f206b273000 R08: 0000000000000009 R09: 0000000000001000 [ 32.758272] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ef5d74fec0 [ 32.759130] R13: 00007fff83737f30 R14: 00007fff83737f60 R15: 00007fff837382c0 [ 32.760003] [ 32.760297] [ 32.760513] Allocated by task 212: [ 32.760941] kasan_save_stack+0x22/0x50 [ 32.761447] kasan_set_track+0x25/0x30 [ 32.761943] __kasan_slab_alloc+0x59/0x70 [ 32.762496] kmem_cache_alloc+0x16b/0x370 [ 32.763015] vm_area_dup+0x20/0x160 [ 32.763477] __split_vma+0x170/0x950 [ 32.763947] split_vma+0xc6/0x110 [ 32.764393] mprotect_fixup+0x8d2/0xb30 [ 32.764897] do_mprotect_pkey+0x87e/0xd40 [ 32.765418] __x64_sys_mprotect+0x78/0xc0 [ 32.765947] do_syscall_64+0x3f/0x90 [ 32.766442] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.767082] [ 32.767301] Freed by task 212: [ 32.767698] kasan_save_stack+0x22/0x50 [ 32.768200] kasan_set_track+0x25/0x30 [ 32.768704] kasan_save_free_info+0x2b/0x50 [ 32.769235] __kasan_slab_free+0x10a/0x190 [ 32.769768] kmem_cache_free+0x10d/0x4d0 [ 32.770293] rcu_core+0x8c8/0x2860 [ 32.770739] __do_softirq+0x1b7/0x7d4 [ 32.771219] [ 32.771439] Last potentially related work creation: [ 32.772028] kasan_save_stack+0x22/0x50 [ 32.772537] __kasan_record_aux_stack+0x8e/0xa0 [ 32.773110] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.773756] remove_vma+0x139/0x170 [ 32.774230] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.774793] do_vmi_munmap+0x1f1/0x2b0 [ 32.775278] __vm_munmap+0x138/0x3a0 [ 32.775752] __x64_sys_munmap+0x59/0x80 [ 32.776253] do_syscall_64+0x3f/0x90 [ 32.776731] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.777370] [ 32.777587] Second to last potentially related work creation: [ 32.778284] kasan_save_stack+0x22/0x50 [ 32.778789] __kasan_record_aux_stack+0x8e/0xa0 [ 32.779363] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.780006] remove_vma+0x139/0x170 [ 32.780460] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.781016] do_vmi_munmap+0x1f1/0x2b0 [ 32.781509] mmap_region+0x1f9/0x2660 [ 32.782004] do_mmap+0x854/0xf00 [ 32.782441] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.782926] ksys_mmap_pgoff+0x3af/0x500 [ 32.783432] do_syscall_64+0x3f/0x90 [ 32.783909] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.784564] [ 32.784786] The buggy address belongs to the object at ffff88800e06ae80 [ 32.784786] which belongs to the cache vm_area_struct of size 168 [ 32.786276] The buggy address is located 88 bytes inside of [ 32.786276] freed 168-byte region [ffff88800e06ae80, ffff88800e06af28) [ 32.787691] [ 32.787907] The buggy address belongs to the physical page: [ 32.788570] page:00000000005bc4e1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe06a [ 32.789665] memcg:ffff88800eb7c601 [ 32.790106] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 32.790810] page_type: 0xffffffff() [ 32.791260] raw: 0100000000000200 ffff88800879fc80 ffffea00003a7e40 0000000000000003 [ 32.792205] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800eb7c601 [ 32.793130] page dumped because: kasan: bad access detected [ 32.793802] [ 32.794027] Memory state around the buggy address: [ 32.794616] ffff88800e06ad80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 32.795483] ffff88800e06ae00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.796345] >ffff88800e06ae80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.797201] ^ [ 32.797936] ffff88800e06af00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 32.798814] ffff88800e06af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 32.799665] ================================================================== [ 32.800774] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.488305] BUG: Bad rss-counter state mm:000000006cb4a955 type:MM_FILEPAGES val:33 [ 34.489477] BUG: Bad rss-counter state mm:000000006cb4a955 type:MM_ANONPAGES val:22 [ 34.871613] BUG: Bad rss-counter state mm:00000000bf5adb33 type:MM_FILEPAGES val:33 [ 34.872805] BUG: Bad rss-counter state mm:00000000bf5adb33 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:30376' (ECDSA) to the list of known hosts. 2023/06/19 18:52:46 fuzzer started 2023/06/19 18:52:46 dialing manager at localhost:44161 2023/06/19 18:52:46 checking machine... 2023/06/19 18:52:46 checking revisions... [ 35.581890] kmemleak: Automatic memory scanning thread ended 2023/06/19 18:52:46 testing simple program... [ 35.631499] cgroup: Unknown subsys name 'net' [ 35.679993] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:52:44 Registers: info registers vcpu 0 RAX=176a2420401b66c9 RBX=000000000000eeac RCX=0000000000000000 RDX=ffff8880143d0000 RSI=ffffffff813c9444 RDI=0000000000000005 RBP=0000000000000000 RSP=ffff8880143cf940 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000001 R12=ffff88800b949e50 R13=fffffbfff0ac5791 R14=ffffffff8562bc88 R15=dffffc0000000000 RIP=ffffffff813c945d 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 00007fe7c24af900 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=00007fe7c19d0018 CR3=000000001030a000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=8ef248429c85ef8e00000000000ae988 XMM05=8f2ea64c65df750e0000000000135d88 XMM06=806171799158d9670000000000134ab8 XMM07=fb795ef6d65770560000000000123f98 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000001 RCX=ffffffff860d68f6 RDX=0000000000000001 RSI=0000000000000000 RDI=0000000000000001 RBP=ffff888014227930 RSP=ffff888014227868 R8 =ffffffff860d68fa R9 =ffff888014227918 R10=0000000000038001 R11=0000000000010b7e R12=ffff888014227938 R13=ffff888014227920 R14=ffff888014227a10 R15=ffff8880142278d8 RIP=ffffffff81131153 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 00007f112ec59900 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=00007ffdfbb30000 CR3=0000000018164000 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=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