[ 30.589935] BUG: Bad rss-counter state mm:00000000764e43fb type:MM_FILEPAGES val:33 [ 30.591369] BUG: Bad rss-counter state mm:00000000764e43fb type:MM_ANONPAGES val:22 [ 30.629052] ================================================================== [ 30.630134] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.631165] Read of size 8 at addr ffff88800ede6880 by task sshd/219 [ 30.632109] [ 30.632348] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.633334] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.634460] Call Trace: [ 30.634796] [ 30.635100] dump_stack_lvl+0x91/0xf0 [ 30.635655] print_report+0xcc/0x620 [ 30.636208] ? __virt_addr_valid+0x102/0x340 [ 30.636831] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.637534] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.638234] kasan_report+0xbe/0xf0 [ 30.638745] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.639439] vma_interval_tree_remove+0xc75/0xec0 [ 30.640113] vma_prepare+0xc54/0x11a0 [ 30.640618] __split_vma+0x5af/0x950 [ 30.641137] ? __pfx___split_vma+0x10/0x10 [ 30.641687] ? find_held_lock+0x2c/0x110 [ 30.642230] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.642833] ? lock_is_held_type+0x9f/0x120 [ 30.643416] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.644120] ? mtree_range_walk+0x632/0x900 [ 30.644774] ? mas_walk+0x5c7/0x7c0 [ 30.645348] do_vmi_munmap+0x1f1/0x2b0 [ 30.645942] mmap_region+0x1f9/0x2660 [ 30.646472] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.647013] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.647762] ? __pfx_lock_acquire+0x10/0x10 [ 30.648335] ? __pfx_mmap_region+0x10/0x10 [ 30.648899] ? security_mmap_addr+0x7d/0xa0 [ 30.649508] ? get_unmapped_area+0x1f5/0x3f0 [ 30.650078] do_mmap+0x854/0xf00 [ 30.650538] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.651043] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.651626] ksys_mmap_pgoff+0x3af/0x500 [ 30.652152] do_syscall_64+0x3f/0x90 [ 30.652642] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.653315] RIP: 0033:0x7fab1a7a6d82 [ 30.653787] 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 [ 30.655949] RSP: 002b:00007ffc14832198 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.656876] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fab1a7a6d82 [ 30.657751] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fab19be0000 [ 30.658615] RBP: 00007fab19be0000 R08: 0000000000000009 R09: 0000000000001000 [ 30.659475] R10: 0000000000000812 R11: 0000000000000206 R12: 000055bcd07fcf70 [ 30.660343] R13: 00007ffc148321b0 R14: 00007ffc148321e0 R15: 00007ffc14832540 [ 30.661258] [ 30.661557] [ 30.661778] Allocated by task 211: [ 30.662219] kasan_save_stack+0x22/0x50 [ 30.662739] kasan_set_track+0x25/0x30 [ 30.663241] __kasan_slab_alloc+0x59/0x70 [ 30.663779] kmem_cache_alloc+0x16b/0x370 [ 30.664309] vm_area_dup+0x20/0x160 [ 30.664777] __split_vma+0x170/0x950 [ 30.665266] split_vma+0xc6/0x110 [ 30.665719] mprotect_fixup+0x8d2/0xb30 [ 30.666229] do_mprotect_pkey+0x87e/0xd40 [ 30.666763] __x64_sys_mprotect+0x78/0xc0 [ 30.667296] do_syscall_64+0x3f/0x90 [ 30.667785] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.668453] [ 30.668683] Freed by task 211: [ 30.669096] kasan_save_stack+0x22/0x50 [ 30.669618] kasan_set_track+0x25/0x30 [ 30.670124] kasan_save_free_info+0x2b/0x50 [ 30.670675] __kasan_slab_free+0x10a/0x190 [ 30.671219] kmem_cache_free+0x10d/0x4d0 [ 30.671747] rcu_core+0x8c8/0x2860 [ 30.672204] __do_softirq+0x1b7/0x7d4 [ 30.672696] [ 30.672918] Last potentially related work creation: [ 30.673543] kasan_save_stack+0x22/0x50 [ 30.674062] __kasan_record_aux_stack+0x8e/0xa0 [ 30.674653] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.675311] remove_vma+0x139/0x170 [ 30.675776] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.676355] do_vmi_munmap+0x1f1/0x2b0 [ 30.676853] __vm_munmap+0x138/0x3a0 [ 30.677347] __x64_sys_munmap+0x59/0x80 [ 30.677851] do_syscall_64+0x3f/0x90 [ 30.678343] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.679004] [ 30.679230] Second to last potentially related work creation: [ 30.679935] kasan_save_stack+0x22/0x50 [ 30.680455] __kasan_record_aux_stack+0x8e/0xa0 [ 30.681050] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.681708] remove_vma+0x139/0x170 [ 30.682175] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.682753] do_vmi_munmap+0x1f1/0x2b0 [ 30.683254] mmap_region+0x1f9/0x2660 [ 30.683745] do_mmap+0x854/0xf00 [ 30.684191] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.684694] ksys_mmap_pgoff+0x3af/0x500 [ 30.685244] do_syscall_64+0x3f/0x90 [ 30.685732] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.686399] [ 30.686620] The buggy address belongs to the object at ffff88800ede6828 [ 30.686620] which belongs to the cache vm_area_struct of size 168 [ 30.688123] The buggy address is located 88 bytes inside of [ 30.688123] freed 168-byte region [ffff88800ede6828, ffff88800ede68d0) [ 30.689565] [ 30.689790] The buggy address belongs to the physical page: [ 30.690456] page:0000000097ae7630 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xede6 [ 30.691561] memcg:ffff88800de5f601 [ 30.691997] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 30.692709] page_type: 0xffffffff() [ 30.693190] raw: 0100000000000200 ffff8880087a0c80 ffffea00003b7a40 dead000000000005 [ 30.694133] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800de5f601 [ 30.695064] page dumped because: kasan: bad access detected [ 30.695742] [ 30.695966] Memory state around the buggy address: [ 30.696565] ffff88800ede6780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 30.697451] ffff88800ede6800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 30.698329] >ffff88800ede6880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 30.699207] ^ [ 30.699629] ffff88800ede6900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.700502] ffff88800ede6980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 30.701384] ================================================================== [ 30.702535] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 33.335257] BUG: Bad rss-counter state mm:000000004eff4d0d type:MM_FILEPAGES val:33 [ 33.336430] BUG: Bad rss-counter state mm:000000004eff4d0d type:MM_ANONPAGES val:22 [ 33.819486] BUG: Bad rss-counter state mm:00000000009987fd type:MM_FILEPAGES val:33 [ 33.820479] BUG: Bad rss-counter state mm:00000000009987fd type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:57237' (ECDSA) to the list of known hosts. 2023/06/21 02:05:15 fuzzer started 2023/06/21 02:05:16 dialing manager at localhost:36067 2023/06/21 02:05:16 checking machine... 2023/06/21 02:05:16 checking revisions... [ 34.563000] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:05:16 testing simple program... [ 34.613977] cgroup: Unknown subsys name 'net' [ 34.655644] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:05:15 Registers: info registers vcpu 0 RAX=0000000000000003 RBX=ffff88800ffc2000 RCX=1ffffffff0ba7c92 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff81810711 RBP=ffff88800844f140 RSP=ffff88800fb978b8 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000200 R13=0000000000000001 R14=ffffffff8367562f R15=ffff88800dcf1a00 RIP=ffffffff81810713 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 00007f7cef0cb900 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=00007f7cee55a0d8 CR3=000000000d62e000 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=395dc4a5f319efba014402fa2d438cbc XMM02=000000000011a8e0d59e07bde36eea69 XMM03=000000000011aa08ec2efd57dc4c00df XMM04=0516a9e3e9aa32ff00000000000ae988 XMM05=1195530bb3c359870000000000133a10 XMM06=4fda316b135da52b0000000000132490 XMM07=fb795ef6d65770560000000000121420 XMM08=2c67c8bc2e329bc3000000000011aa08 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffffffff813ad470 RCX=0000000000000001 RDX=1ffff1100d9e135e RSI=ffffffff81809add RDI=ffff88806cf09b60 RBP=ffff88806cf09b30 RSP=ffff88806cf09a90 R8 =0000000000000001 R9 =ffff88806cf09ad8 R10=0000000000038001 R11=0000000000020db7 R12=ffff88806cf09b60 R13=0000000000000000 R14=ffff888015b83680 R15=ffff88800c70b540 RIP=ffffffff813ad47e 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 00007f13dcd8a900 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=00007f13dd341618 CR3=0000000009978000 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=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