BUG: unable to handle page fault for address: 00000000000400e0 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5499 Comm: dhcpcd-run-hook Not tainted 6.5.0-rc4-next-20230804-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:freelist_ptr_decode mm/slub.c:395 [inline] RIP: 0010:get_freepointer mm/slub.c:408 [inline] RIP: 0010:get_freepointer_safe mm/slub.c:435 [inline] RIP: 0010:__slab_alloc_node mm/slub.c:3377 [inline] RIP: 0010:slab_alloc_node mm/slub.c:3468 [inline] RIP: 0010:slab_alloc mm/slub.c:3486 [inline] RIP: 0010:__kmem_cache_alloc_lru mm/slub.c:3493 [inline] RIP: 0010:kmem_cache_alloc_lru+0x1b0/0x630 mm/slub.c:3509 Code: 8b 40 08 48 83 78 10 00 48 8b 38 0f 84 36 03 00 00 48 85 ff 0f 84 2d 03 00 00 41 8b 44 24 28 49 8d 48 08 4c 89 c2 4d 8b 0c 24 <48> 8b 1c 07 48 89 f8 65 49 0f c7 09 0f 1f 00 49 31 d0 48 31 f8 49 RSP: 0018:ffffc900053276b0 EFLAGS: 00010206 RAX: 0000000000000098 RBX: 0000000000000cc0 RCX: 0000000000029b41 RDX: 0000000000029b39 RSI: ffffffff8ac889a0 RDI: 0000000000040048 RBP: ffffc90005327710 R08: 0000000000029b39 R09: 00000000000443c0 R10: ffffffff8eacc657 R11: 0000000000000000 R12: ffff888014a448c0 R13: 0000000000000cc0 R14: ffffffff81f13b82 R15: ffff8880261687a0 FS: 00007f1cbeac3380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000400e0 CR3: 000000001fa1d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __d_alloc+0x32/0xac0 fs/dcache.c:1769 d_alloc+0x4e/0x220 fs/dcache.c:1849 d_alloc_parallel+0xe9/0x15f0 fs/dcache.c:2638 __lookup_slow+0x194/0x450 fs/namei.c:1675 lookup_slow fs/namei.c:1707 [inline] walk_component+0x349/0x5a0 fs/namei.c:1998 lookup_last fs/namei.c:2455 [inline] path_lookupat+0x17f/0x770 fs/namei.c:2479 filename_lookup+0x1e7/0x5b0 fs/namei.c:2508 vfs_statx+0x160/0x430 fs/stat.c:277 vfs_fstatat+0x90/0xb0 fs/stat.c:315 __do_sys_newfstatat+0x98/0x110 fs/stat.c:485 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f1cbec175f4 Code: 64 c7 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 10 48 8b 15 03 a8 0d 00 f7 d8 41 83 c8 RSP: 002b:00007ffd6f7c0258 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1cbec175f4 RDX: 00007ffd6f7c0268 RSI: 000056080ab5a188 RDI: 00000000ffffff9c RBP: 000056080ab54040 R08: 0000000000000028 R09: 3c00000000001001 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1cbed9b2ba R13: 0000000000000000 R14: 00007ffd6f7c0558 R15: 0000000000000000 Modules linked in: CR2: 00000000000400e0 ---[ end trace 0000000000000000 ]--- RIP: 0010:freelist_ptr_decode mm/slub.c:395 [inline] RIP: 0010:get_freepointer mm/slub.c:408 [inline] RIP: 0010:get_freepointer_safe mm/slub.c:435 [inline] RIP: 0010:__slab_alloc_node mm/slub.c:3377 [inline] RIP: 0010:slab_alloc_node mm/slub.c:3468 [inline] RIP: 0010:slab_alloc mm/slub.c:3486 [inline] RIP: 0010:__kmem_cache_alloc_lru mm/slub.c:3493 [inline] RIP: 0010:kmem_cache_alloc_lru+0x1b0/0x630 mm/slub.c:3509 Code: 8b 40 08 48 83 78 10 00 48 8b 38 0f 84 36 03 00 00 48 85 ff 0f 84 2d 03 00 00 41 8b 44 24 28 49 8d 48 08 4c 89 c2 4d 8b 0c 24 <48> 8b 1c 07 48 89 f8 65 49 0f c7 09 0f 1f 00 49 31 d0 48 31 f8 49 RSP: 0018:ffffc900053276b0 EFLAGS: 00010206 RAX: 0000000000000098 RBX: 0000000000000cc0 RCX: 0000000000029b41 RDX: 0000000000029b39 RSI: ffffffff8ac889a0 RDI: 0000000000040048 RBP: ffffc90005327710 R08: 0000000000029b39 R09: 00000000000443c0 R10: ffffffff8eacc657 R11: 0000000000000000 R12: ffff888014a448c0 R13: 0000000000000cc0 R14: ffffffff81f13b82 R15: ffff8880261687a0 FS: 00007f1cbeac3380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000400e0 CR3: 000000001fa1d000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8b 40 08 mov 0x8(%rax),%eax 3: 48 83 78 10 00 cmpq $0x0,0x10(%rax) 8: 48 8b 38 mov (%rax),%rdi b: 0f 84 36 03 00 00 je 0x347 11: 48 85 ff test %rdi,%rdi 14: 0f 84 2d 03 00 00 je 0x347 1a: 41 8b 44 24 28 mov 0x28(%r12),%eax 1f: 49 8d 48 08 lea 0x8(%r8),%rcx 23: 4c 89 c2 mov %r8,%rdx 26: 4d 8b 0c 24 mov (%r12),%r9 * 2a: 48 8b 1c 07 mov (%rdi,%rax,1),%rbx <-- trapping instruction 2e: 48 89 f8 mov %rdi,%rax 31: 65 49 0f c7 09 cmpxchg16b %gs:(%r9) 36: 0f 1f 00 nopl (%rax) 39: 49 31 d0 xor %rdx,%r8 3c: 48 31 f8 xor %rdi,%rax 3f: 49 rex.WB