[ 33.176252] BUG: Bad rss-counter state mm:00000000e99fec7c type:MM_FILEPAGES val:33 [ 33.177747] BUG: Bad rss-counter state mm:00000000e99fec7c type:MM_ANONPAGES val:22 [ 33.337799] ================================================================== [ 33.338977] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 33.340393] Read of size 8 at addr ffff88800daba140 by task sshd/226 [ 33.341375] [ 33.341647] CPU: 1 PID: 226 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 33.342775] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 33.343866] Call Trace: [ 33.344185] [ 33.344494] dump_stack_lvl+0x91/0xf0 [ 33.345009] print_report+0xcc/0x620 [ 33.345527] ? __virt_addr_valid+0x102/0x340 [ 33.346110] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.346780] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.347449] kasan_report+0xbe/0xf0 [ 33.347953] ? vma_interval_tree_remove+0xc75/0xec0 [ 33.348627] vma_interval_tree_remove+0xc75/0xec0 [ 33.349288] vma_prepare+0xc54/0x11a0 [ 33.349794] __split_vma+0x5af/0x950 [ 33.350320] ? __pfx___split_vma+0x10/0x10 [ 33.350880] ? find_held_lock+0x2c/0x110 [ 33.351452] do_vmi_align_munmap+0x2ba/0x11f0 [ 33.352042] ? lock_is_held_type+0x9f/0x120 [ 33.352625] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 33.353302] ? mtree_range_walk+0x632/0x900 [ 33.353884] ? mas_walk+0x5c7/0x7c0 [ 33.354409] do_vmi_munmap+0x1f1/0x2b0 [ 33.354926] mmap_region+0x1f9/0x2660 [ 33.355457] ? vm_mmap_pgoff+0x15c/0x3a0 [ 33.355992] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 33.356757] ? __pfx_lock_acquire+0x10/0x10 [ 33.357352] ? __pfx_mmap_region+0x10/0x10 [ 33.357909] ? security_mmap_addr+0x7d/0xa0 [ 33.358491] ? get_unmapped_area+0x1f5/0x3f0 [ 33.359072] do_mmap+0x854/0xf00 [ 33.359567] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.360098] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 33.360708] ksys_mmap_pgoff+0x3af/0x500 [ 33.361276] do_syscall_64+0x3f/0x90 [ 33.361781] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.362470] RIP: 0033:0x7f41923d9d82 [ 33.362959] 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 [ 33.365299] RSP: 002b:00007ffcf232e7f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 33.366274] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f41923d9d82 [ 33.367181] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f4191813000 [ 33.368078] RBP: 00007f4191813000 R08: 0000000000000009 R09: 0000000000001000 [ 33.369028] R10: 0000000000000812 R11: 0000000000000206 R12: 0000565339facec0 [ 33.369935] R13: 00007ffcf232e810 R14: 00007ffcf232e840 R15: 00007ffcf232eba0 [ 33.370852] [ 33.371157] [ 33.371398] Allocated by task 212: [ 33.371851] kasan_save_stack+0x22/0x50 [ 33.372416] kasan_set_track+0x25/0x30 [ 33.372942] __kasan_slab_alloc+0x59/0x70 [ 33.373531] kmem_cache_alloc+0x16b/0x370 [ 33.374076] vm_area_dup+0x20/0x160 [ 33.374567] __split_vma+0x170/0x950 [ 33.375053] split_vma+0xc6/0x110 [ 33.375535] mprotect_fixup+0x8d2/0xb30 [ 33.376064] do_mprotect_pkey+0x87e/0xd40 [ 33.376635] __x64_sys_mprotect+0x78/0xc0 [ 33.377211] do_syscall_64+0x3f/0x90 [ 33.377741] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.378432] [ 33.378657] Freed by task 212: [ 33.379066] kasan_save_stack+0x22/0x50 [ 33.379603] kasan_set_track+0x25/0x30 [ 33.380117] kasan_save_free_info+0x2b/0x50 [ 33.380689] __kasan_slab_free+0x10a/0x190 [ 33.381284] kmem_cache_free+0x10d/0x4d0 [ 33.381883] rcu_core+0x8c8/0x2860 [ 33.382382] __do_softirq+0x1b7/0x7d4 [ 33.382887] [ 33.383112] Last potentially related work creation: [ 33.383758] kasan_save_stack+0x22/0x50 [ 33.384301] __kasan_record_aux_stack+0x8e/0xa0 [ 33.384908] __call_rcu_common.constprop.0+0x6a/0xb90 [ 33.385619] remove_vma+0x139/0x170 [ 33.386097] do_vmi_align_munmap+0xd4a/0x11f0 [ 33.386710] do_vmi_munmap+0x1f1/0x2b0 [ 33.387228] __vm_munmap+0x138/0x3a0 [ 33.387731] __x64_sys_munmap+0x59/0x80 [ 33.388269] do_syscall_64+0x3f/0x90 [ 33.388774] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.389485] [ 33.389709] Second to last potentially related work creation: [ 33.390458] kasan_save_stack+0x22/0x50 [ 33.390985] __kasan_record_aux_stack+0x8e/0xa0 [ 33.391598] __call_rcu_common.constprop.0+0x6a/0xb90 [ 33.392286] remove_vma+0x139/0x170 [ 33.392767] do_vmi_align_munmap+0xd4a/0x11f0 [ 33.393396] do_vmi_munmap+0x1f1/0x2b0 [ 33.393907] mmap_region+0x1f9/0x2660 [ 33.394443] do_mmap+0x854/0xf00 [ 33.394900] vm_mmap_pgoff+0x1a6/0x3a0 [ 33.395437] ksys_mmap_pgoff+0x3af/0x500 [ 33.395969] do_syscall_64+0x3f/0x90 [ 33.396485] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 33.397172] [ 33.397419] The buggy address belongs to the object at ffff88800daba0e8 [ 33.397419] which belongs to the cache vm_area_struct of size 168 [ 33.398993] The buggy address is located 88 bytes inside of [ 33.398993] freed 168-byte region [ffff88800daba0e8, ffff88800daba190) [ 33.400508] [ 33.400738] The buggy address belongs to the physical page: [ 33.401467] page:0000000062bb184f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdaba [ 33.402655] memcg:ffff88800c49c401 [ 33.403101] flags: 0x100000000000200(slab|node=0|zone=1) [ 33.403791] page_type: 0xffffffff() [ 33.404276] raw: 0100000000000200 ffff88800879fc80 ffffea0000355300 dead000000000002 [ 33.405293] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c49c401 [ 33.406293] page dumped because: kasan: bad access detected [ 33.406999] [ 33.407227] Memory state around the buggy address: [ 33.407860] ffff88800daba000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.408782] ffff88800daba080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 33.409683] >ffff88800daba100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 33.410569] ^ [ 33.411265] ffff88800daba180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 33.412168] ffff88800daba200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 33.413113] ================================================================== [ 33.414097] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 36.117769] BUG: Bad rss-counter state mm:00000000b55a5449 type:MM_FILEPAGES val:33 [ 36.118764] BUG: Bad rss-counter state mm:00000000b55a5449 type:MM_ANONPAGES val:22 [ 36.622402] BUG: Bad rss-counter state mm:0000000054b80aa3 type:MM_FILEPAGES val:33 [ 36.623582] BUG: Bad rss-counter state mm:0000000054b80aa3 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:36289' (ECDSA) to the list of known hosts. 2023/06/19 14:11:42 fuzzer started 2023/06/19 14:11:42 dialing manager at localhost:44161 2023/06/19 14:11:42 checking machine... 2023/06/19 14:11:42 checking revisions... [ 37.377670] kmemleak: Automatic memory scanning thread ended 2023/06/19 14:11:42 testing simple program... [ 37.427813] cgroup: Unknown subsys name 'net' [ 37.468168] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:11:40 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000001 RCX=ffffffff81370a39 RDX=000000000000370a RSI=000000000000370a RDI=ffffffff864f57e8 RBP=ffff88800e64f5d8 RSP=ffff88800e64f510 R8 =0000000000000000 R9 =ffff88800e64f5c0 R10=0000000000038001 R11=0000000000020ed0 R12=ffff88800e64f5e0 R13=ffff88800e64f5c8 R14=ffff88800e64f5c1 R15=ffff88800e64f580 RIP=ffffffff8113077a RFL=00000212 [----A--] 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 00007f724bbb1700 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=00007ffef0ac2728 CR3=00000000147e2000 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=00000000000000000000000000000000 XMM01=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3533325b646873732032343a3131 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363839 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000003 RBX=0000000000000000 RCX=ffffffff8137ab83 RDX=0000000000000000 RSI=0000000000000000 RDI=ffffffff85d3bed0 RBP=ffff888008d71b40 RSP=ffff888008d87a88 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3d010 R11=0000000000000003 R12=ffff88806cf39500 R13=ffff88806cf3a2c0 R14=ffff888008d71b40 R15=ffff888008d87dc0 RIP=ffffffff8137abe8 RFL=00000046 [---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=00007f3a4137a618 CR3=000000000fb6e000 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=563412feff00545000000000000080fe XMM01=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000