[ 31.785458] BUG: Bad rss-counter state mm:000000008e4fe0d6 type:MM_FILEPAGES val:33 [ 31.786499] BUG: Bad rss-counter state mm:000000008e4fe0d6 type:MM_ANONPAGES val:22 [ 31.821338] ================================================================== [ 31.822255] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.823185] Read of size 8 at addr ffff88801a3ce6b0 by task sshd/219 [ 31.823940] [ 31.824155] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 31.825002] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.825952] Call Trace: [ 31.826267] [ 31.826544] dump_stack_lvl+0x91/0xf0 [ 31.827034] print_report+0xcc/0x620 [ 31.827510] ? __virt_addr_valid+0x102/0x340 [ 31.828051] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.828665] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.829271] kasan_report+0xbe/0xf0 [ 31.829741] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.830351] vma_interval_tree_remove+0xc75/0xec0 [ 31.830968] vma_prepare+0xc54/0x11a0 [ 31.831440] __split_vma+0x5af/0x950 [ 31.831913] ? __pfx___split_vma+0x10/0x10 [ 31.832509] ? find_held_lock+0x2c/0x110 [ 31.833065] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.833616] ? lock_is_held_type+0x9f/0x120 [ 31.834166] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.834800] ? mtree_range_walk+0x632/0x900 [ 31.835351] ? mas_walk+0x5c7/0x7c0 [ 31.835824] do_vmi_munmap+0x1f1/0x2b0 [ 31.836302] mmap_region+0x1f9/0x2660 [ 31.836772] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.837270] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.837962] ? __pfx_lock_acquire+0x10/0x10 [ 31.838479] ? __pfx_mmap_region+0x10/0x10 [ 31.839017] ? security_mmap_addr+0x7d/0xa0 [ 31.839534] ? get_unmapped_area+0x1f5/0x3f0 [ 31.840110] do_mmap+0x854/0xf00 [ 31.840565] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.841072] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.841643] ksys_mmap_pgoff+0x3af/0x500 [ 31.842152] do_syscall_64+0x3f/0x90 [ 31.842624] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.843270] RIP: 0033:0x7fc200c90d82 [ 31.843723] 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 [ 31.845857] RSP: 002b:00007ffc31f33e78 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.846766] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fc200c90d82 [ 31.847658] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fc2000ca000 [ 31.848515] RBP: 00007fc2000ca000 R08: 0000000000000009 R09: 0000000000001000 [ 31.849372] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564341bedec0 [ 31.850236] R13: 00007ffc31f33e90 R14: 00007ffc31f33ec0 R15: 00007ffc31f34220 [ 31.851106] [ 31.851399] [ 31.851616] Allocated by task 209: [ 31.852048] kasan_save_stack+0x22/0x50 [ 31.852557] kasan_set_track+0x25/0x30 [ 31.853052] __kasan_slab_alloc+0x59/0x70 [ 31.853574] kmem_cache_alloc+0x16b/0x370 [ 31.854093] vm_area_dup+0x20/0x160 [ 31.854547] __split_vma+0x170/0x950 [ 31.855030] split_vma+0xc6/0x110 [ 31.855472] mprotect_fixup+0x8d2/0xb30 [ 31.855975] do_mprotect_pkey+0x87e/0xd40 [ 31.856499] __x64_sys_mprotect+0x78/0xc0 [ 31.857024] do_syscall_64+0x3f/0x90 [ 31.857498] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.858146] [ 31.858362] Freed by task 209: [ 31.858756] kasan_save_stack+0x22/0x50 [ 31.859274] kasan_set_track+0x25/0x30 [ 31.859770] kasan_save_free_info+0x2b/0x50 [ 31.860309] __kasan_slab_free+0x10a/0x190 [ 31.860845] kmem_cache_free+0x10d/0x4d0 [ 31.861353] rcu_core+0x8c8/0x2860 [ 31.861797] __do_softirq+0x1b7/0x7d4 [ 31.862274] [ 31.862491] Last potentially related work creation: [ 31.863091] kasan_save_stack+0x22/0x50 [ 31.863599] __kasan_record_aux_stack+0x8e/0xa0 [ 31.864174] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.864820] remove_vma+0x139/0x170 [ 31.865273] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.865833] do_vmi_munmap+0x1f1/0x2b0 [ 31.866324] __vm_munmap+0x138/0x3a0 [ 31.866801] __x64_sys_munmap+0x59/0x80 [ 31.867303] do_syscall_64+0x3f/0x90 [ 31.867777] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.868425] [ 31.868639] The buggy address belongs to the object at ffff88801a3ce658 [ 31.868639] which belongs to the cache vm_area_struct of size 168 [ 31.870119] The buggy address is located 88 bytes inside of [ 31.870119] freed 168-byte region [ffff88801a3ce658, ffff88801a3ce700) [ 31.871535] [ 31.871754] The buggy address belongs to the physical page: [ 31.872414] page:000000006b963996 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1a3ce [ 31.873523] memcg:ffff88801a3bb401 [ 31.873952] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.874598] page_type: 0xffffffff() [ 31.875065] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 31.875991] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a3bb401 [ 31.876909] page dumped because: kasan: bad access detected [ 31.877576] [ 31.877793] Memory state around the buggy address: [ 31.878378] ffff88801a3ce580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.879252] ffff88801a3ce600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 31.880124] >ffff88801a3ce680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.880985] ^ [ 31.881570] ffff88801a3ce700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 31.882425] ffff88801a3ce780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 31.883280] ================================================================== [ 31.884340] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 34.842955] BUG: Bad rss-counter state mm:00000000e3aa954e type:MM_FILEPAGES val:33 [ 34.844104] BUG: Bad rss-counter state mm:00000000e3aa954e type:MM_ANONPAGES val:22 [ 35.314729] BUG: Bad rss-counter state mm:000000009dfcfc34 type:MM_FILEPAGES val:33 [ 35.315969] BUG: Bad rss-counter state mm:000000009dfcfc34 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:7545' (ECDSA) to the list of known hosts. 2023/06/19 18:32:49 fuzzer started 2023/06/19 18:32:49 dialing manager at localhost:44161 2023/06/19 18:32:49 checking machine... 2023/06/19 18:32:49 checking revisions... [ 35.961988] kmemleak: Automatic memory scanning thread ended 2023/06/19 18:32:49 testing simple program... [ 36.013165] cgroup: Unknown subsys name 'net' [ 36.061946] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:32:48 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff88801643d1c0 RSI=ffffffff82158763 RDI=00007ffcfc415044 RBP=00007ffcfc414fa0 RSP=ffff888019d4f750 R8 =0001000800000002 R9 =000200080f02000a R10=000400080f02000a R11=00030009ff02000a R12=ffff88800ff18000 R13=00007ffcfc415044 R14=0000000000000000 R15=ffff888019d4fe70 RIP=ffffffff814c081b 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 00007fcc663b5900 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=00007fcc6696c618 CR3=000000000ec94000 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=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 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 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 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=00007fed15b73400 CR3=000000000eb58000 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=07fb3606ccd4fca63449fb3ab10af4c9 XMM02=000000000011de58eff9b2d0a8fce9cb XMM03=000000000011df282c67c8bc2e329bc3 XMM04=701c0b4ceec74d2100000000000ae988 XMM05=dfcdbad4f1609c370000000000134090 XMM06=4bb587c5b86e5b760000000000133268 XMM07=e042d86d42eb936e0000000000123eb0 XMM08=848a283afebca661000000000011df28 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000