[ 24.003501] BUG: Bad rss-counter state mm:0000000013c31c44 type:MM_FILEPAGES val:33 [ 24.004591] BUG: Bad rss-counter state mm:0000000013c31c44 type:MM_ANONPAGES val:22 [ OK ] Finished Update UTMP about System Runlevel Changes. [ 24.308548] ================================================================== [ 24.309264] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.309974] Read of size 8 at addr ffff88801b01d5c8 by task sshd/221 [ 24.310559] [ 24.310725] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.311369] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.312104] Call Trace: [ 24.312353] [ 24.312564] dump_stack_lvl+0x91/0xf0 [ 24.312934] print_report+0xcc/0x620 [ 24.313301] ? __virt_addr_valid+0x102/0x340 [ 24.313717] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.314179] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.314644] kasan_report+0xbe/0xf0 [ 24.315007] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.315473] vma_interval_tree_remove+0xc75/0xec0 [ 24.315929] vma_prepare+0xc54/0x11a0 [ 24.316302] __split_vma+0x5af/0x950 [ 24.316667] ? __pfx___split_vma+0x10/0x10 [ 24.317065] ? find_held_lock+0x2c/0x110 [ 24.317459] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.317891] ? lock_is_held_type+0x9f/0x120 [ 24.318296] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.318759] ? mtree_range_walk+0x632/0x900 [ 24.319177] ? mas_walk+0x5c7/0x7c0 [ 24.319531] do_vmi_munmap+0x1f1/0x2b0 [ 24.319901] mmap_region+0x1f9/0x2660 [ 24.320267] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.320672] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.321194] ? __pfx_lock_acquire+0x10/0x10 [ 24.321495] ? __pfx_mmap_region+0x10/0x10 [ 24.321791] ? security_mmap_addr+0x7d/0xa0 [ 24.322089] ? get_unmapped_area+0x1f5/0x3f0 [ 24.322472] do_mmap+0x854/0xf00 [ 24.322721] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.322997] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.323313] ksys_mmap_pgoff+0x3af/0x500 [ 24.323595] do_syscall_64+0x3f/0x90 [ 24.323868] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.324229] RIP: 0033:0x7efe0782bd82 [ 24.324491] 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 [ 24.325705] RSP: 002b:00007ffdce6d4d18 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.326212] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007efe0782bd82 [ 24.326682] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007efe06c65000 [ 24.327169] RBP: 00007efe06c65000 R08: 0000000000000009 R09: 0000000000001000 [ 24.327649] R10: 0000000000000812 R11: 0000000000000206 R12: 0000563c2a6c9ec0 [ 24.328124] R13: 00007ffdce6d4d30 R14: 00007ffdce6d4d60 R15: 00007ffdce6d50c0 [ 24.328616] [ 24.328782] [ 24.328905] Allocated by task 208: [ 24.329147] kasan_save_stack+0x22/0x50 [ 24.329431] kasan_set_track+0x25/0x30 [ 24.329706] __kasan_slab_alloc+0x59/0x70 [ 24.330003] kmem_cache_alloc+0x16b/0x370 [ 24.330297] vm_area_dup+0x20/0x160 [ 24.330551] __split_vma+0x170/0x950 [ 24.330814] split_vma+0xc6/0x110 [ 24.331059] mprotect_fixup+0x8d2/0xb30 [ 24.331342] do_mprotect_pkey+0x87e/0xd40 [ 24.331633] __x64_sys_mprotect+0x78/0xc0 [ 24.331924] do_syscall_64+0x3f/0x90 [ 24.332192] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.332570] [ 24.332692] Freed by task 208: [ 24.332914] kasan_save_stack+0x22/0x50 [ 24.333193] kasan_set_track+0x25/0x30 [ 24.333467] kasan_save_free_info+0x2b/0x50 [ 24.333770] __kasan_slab_free+0x10a/0x190 [ 24.334075] kmem_cache_free+0x10d/0x4d0 [ 24.334361] rcu_core+0x8c8/0x2860 [ 24.334617] __do_softirq+0x1b7/0x7d4 [ 24.334885] [ 24.335005] Last potentially related work creation: [ 24.335337] kasan_save_stack+0x22/0x50 [ 24.335619] __kasan_record_aux_stack+0x8e/0xa0 [ 24.335943] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.336306] remove_vma+0x139/0x170 [ 24.336571] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.336884] do_vmi_munmap+0x1f1/0x2b0 [ 24.337157] __vm_munmap+0x138/0x3a0 [ 24.337424] __x64_sys_munmap+0x59/0x80 [ 24.337443] do_syscall_64+0x3f/0x90 [ 24.337463] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.337486] [ 24.337488] The buggy address belongs to the object at ffff88801b01d570 [ 24.337488] which belongs to the cache vm_area_struct of size 168 [ 24.337501] The buggy address is located 88 bytes inside of [ 24.337501] freed 168-byte region [ffff88801b01d570, ffff88801b01d618) [ 24.337516] [ 24.337519] The buggy address belongs to the physical page: [ 24.337524] page:000000001a5a94df refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b01d [ 24.337541] memcg:ffff88801abf2b01 [ 24.337546] flags: 0x100000000000200(slab|node=0|zone=1) [ 24.337558] page_type: 0xffffffff() [ 24.337572] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 24.337587] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801abf2b01 [ 24.337595] page dumped because: kasan: bad access detected [ 24.337600] [ 24.337602] Memory state around the buggy address: [ 24.337608] ffff88801b01d480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.337619] ffff88801b01d500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 24.337629] >ffff88801b01d580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.337636] ^ [ 24.337644] ffff88801b01d600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 24.337654] ffff88801b01d680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.337661] ================================================================== [ 24.337709] Disabling lock debugging due to kernel taint Debian GNU/Linux 11 syzkaller ttyS0 syzkaller login: [ 26.277644] BUG: Bad rss-counter state mm:000000001e602d38 type:MM_FILEPAGES val:33 [ 26.278654] BUG: Bad rss-counter state mm:000000001e602d38 type:MM_ANONPAGES val:22 [ 26.790858] BUG: Bad rss-counter state mm:00000000089ea1e8 type:MM_FILEPAGES val:33 [ 26.791849] BUG: Bad rss-counter state mm:00000000089ea1e8 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:40911' (ECDSA) to the list of known hosts. [ 27.010677] general protection fault, probably for non-canonical address 0xe0f91c0100000002: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 27.012129] KASAN: maybe wild-memory-access in range [0x07c9000800000010-0x07c9000800000017] [ 27.013191] CPU: 0 PID: 237 Comm: sshd Tainted: G B 6.4.0-rc7-next-20230619 #1 [ 27.014275] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 27.015305] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 27.016017] Code: c2 48 c1 ea 03 42 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 27.018321] RSP: 0018:ffff88801464f948 EFLAGS: 00010212 [ 27.018995] RAX: ffff8880193605d0 RBX: ffff88801b36dcf0 RCX: ffffffff844ce9f9 [ 27.019888] RDX: 00f9200100000002 RSI: 0000000000000008 RDI: ffff88801ab1dd18 [ 27.020789] RBP: ffff888015efc0c0 R08: ffff88801ab1dd18 R09: 0000000000000000 [ 27.021687] R10: 0000000000000003 R11: 00000000000b6996 R12: ffff88801ab1dd10 [ 27.022571] R13: dffffc0000000000 R14: 07c9000800000013 R15: ffffffff816e61c0 [ 27.023480] FS: 00007f5054306900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 27.024502] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.025244] CR2: 0000563fbb1bf1c0 CR3: 000000000f168000 CR4: 0000000000350ef0 [ 27.026147] Call Trace: [ 27.026488] [ 27.026780] ? die_addr+0x3c/0xa0 [ 27.027249] ? exc_general_protection+0x125/0x220 [ 27.027888] ? asm_exc_general_protection+0x26/0x30 [ 27.028568] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 27.029344] ? __rb_insert_augmented+0x5e9/0x8b0 [ 27.029975] ? __rb_insert_augmented+0x9d/0x8b0 [ 27.030586] ? __rb_insert_augmented+0x5e9/0x8b0 [ 27.031212] ? vma_interval_tree_insert_after+0x315/0x390 [ 27.031920] dup_mmap+0xc45/0x1770 [ 27.032413] ? __pfx_dup_mmap+0x10/0x10 [ 27.032928] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 27.033544] ? _raw_spin_unlock_irqrestore+0x2c/0x50 [ 27.034201] ? trace_hardirqs_on+0x16/0x100 [ 27.034781] ? mm_init+0xb4a/0xe70 [ 27.035250] copy_process+0x3e68/0x7320 [ 27.035775] ? lock_acquire+0x434/0x4c0 [ 27.036313] ? __pfx_copy_process+0x10/0x10 [ 27.036892] ? expand_files+0x446/0x8e0 [ 27.037430] kernel_clone+0xeb/0x7d0 [ 27.037921] ? __pfx_kernel_clone+0x10/0x10 [ 27.038482] ? lock_acquire+0x434/0x4c0 [ 27.039006] ? lock_release+0x4d8/0x680 [ 27.039527] ? __pfx_lock_release+0x10/0x10 [ 27.040091] ? __pfx_lock_release+0x10/0x10 [ 27.040652] ? _raw_spin_unlock+0x1e/0x40 [ 27.041184] ? alloc_fd+0x2eb/0x760 [ 27.041679] __do_sys_clone+0xba/0x100 [ 27.042187] ? __pfx___do_sys_clone+0x10/0x10 [ 27.042784] ? fpregs_assert_state_consistent+0xbd/0xe0 [ 27.043477] do_syscall_64+0x3f/0x90 [ 27.043974] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 27.044659] RIP: 0033:0x7f50547c54bb [ 27.045135] Code: ed 0f 85 f8 00 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 91 00 00 00 41 89 c5 85 c0 0f 85 9e 00 00 [ 27.047402] RSP: 002b:00007fff68ec94a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 27.048374] RAX: ffffffffffffffda RBX: 000000000000b784 RCX: 00007f50547c54bb [ 27.049265] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 27.050153] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f5054306900 [ 27.051046] R10: 00007f5054306bd0 R11: 0000000000000246 R12: 0000000000000000 [ 27.051937] R13: 0000563fbb1ccf00 R14: 0000563fbb1dd390 R15: 00007fff68ec9520 [ 27.052845] [ 27.053152] Modules linked in: [ 27.054084] ---[ end trace 0000000000000000 ]--- [ 27.054704] RIP: 0010:__rb_insert_augmented+0x9d/0x8b0 [ 27.055566] Code: c2 48 c1 ea 03 42 80 3c 2a 00 0f 85 55 05 00 00 4d 8b 74 24 08 49 39 ee 0f 84 77 01 00 00 4d 85 f6 74 1c 4c 89 f2 48 c1 ea 03 <42> 80 3c 2a 00 0f 85 61 05 00 00 41 f6 06 01 0f 84 7a 04 00 00 48 [ 27.057965] RSP: 0018:ffff88801464f948 EFLAGS: 00010212 [ 27.058647] RAX: ffff8880193605d0 RBX: ffff88801b36dcf0 RCX: ffffffff844ce9f9 [ 27.059659] RDX: 00f9200100000002 RSI: 0000000000000008 RDI: ffff88801ab1dd18 [ 27.060679] RBP: ffff888015efc0c0 R08: ffff88801ab1dd18 R09: 0000000000000000 [ 27.061737] R10: 0000000000000003 R11: 00000000000b6996 R12: ffff88801ab1dd10 [ 27.062749] R13: dffffc0000000000 R14: 07c9000800000013 R15: ffffffff816e61c0 [ 27.063700] FS: 00007f5054306900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 [ 27.064776] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.065552] CR2: 0000563fbb1bf1c0 CR3: 000000000f168000 CR4: 0000000000350ef0 VM DIAGNOSIS: 04:42:13 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000001 RCX=ffffffff846000a9 RDX=0000000000036000 RSI=0000000000036000 RDI=ffffffff865bfbc0 RBP=ffff88806ce09aa8 RSP=ffff88806ce099e0 R8 =0000000000000000 R9 =ffff88806ce09a90 R10=0000000000038001 R11=00000000000b4fb9 R12=ffff88806ce09ab0 R13=ffff88806ce09a98 R14=ffff88806ce09a91 R15=ffff88806ce09a50 RIP=ffffffff8113077a RFL=00000216 [----AP-] 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 00007f2df34c2700 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=00007f7adcb110b0 CR3=000000000e1ca000 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=2033313a32343a3430203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732033313a32343a3430203032 XMM08=3d656e696c646d632022656369767265 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=ffff888008c58400 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=00007ff16baa6450 CR3=000000000989e000 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=1670c986e3e9a48d0a4859707c2659ac XMM02=000000000011ce08ec2efd57dc4c00df XMM03=0000000000122af0a38be0565fbe0700 XMM04=1d870e2947b0caaa00000000000ae988 XMM05=dfcdbad4f1609c3700000000001334c0 XMM06=b494ff787c62f9120000000000132698 XMM07=e042d86d42eb936e0000000000122dc8 XMM08=a38be0565fbe0700000000000011ce68 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000