BUG: stack guard page was hit at ffffc90000b7fff8 (stack is ffffc90000b80000..ffffc90000b87fff) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 365 Comm: syz-executor250 Not tainted 5.10.104-syzkaller-00407-g9e96a3d6ae39 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:stack_trace_save+0x86/0x1e0 kernel/stacktrace.c:115 Code: 4c 8d 7c 24 20 49 c1 ef 03 48 b8 f1 f1 f1 f1 00 00 00 f3 4b 89 04 2f 43 c7 44 2f 08 f3 f3 f3 f3 ba 18 00 00 00 4c 89 f7 31 f6 b5 04 4b 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 RSP: 0018:ffffc90000b80000 EFLAGS: 00010246 RAX: f3000000f1f1f1f1 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000018 RSI: 0000000000000000 RDI: ffffc90000b80040 RBP: ffffc90000b800d0 R08: dffffc0000000000 R09: ffffc90000b800e0 R10: 0000000000000004 R11: 0000000000000000 R12: ffffc90000b800e0 R13: dffffc0000000000 R14: ffffc90000b80040 R15: 1ffff92000170004 FS: 000055555557f300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000b7fff8 CR3: 000000010d8cd000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:428 [inline] __kasan_slab_alloc+0xb2/0xe0 mm/kasan/common.c:461 kasan_slab_alloc include/linux/kasan.h:259 [inline] slab_post_alloc_hook mm/slab.h:583 [inline] slab_alloc_node mm/slub.c:2954 [inline] slab_alloc mm/slub.c:2962 [inline] kmem_cache_alloc+0x1a2/0x380 mm/slub.c:2967 __d_alloc+0x2d/0x6b0 fs/dcache.c:1709 d_alloc fs/dcache.c:1788 [inline] d_alloc_parallel+0xf3/0x1360 fs/dcache.c:2540 __lookup_slow+0x14e/0x400 fs/namei.c:1613 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 __lookup_slow+0x2b3/0x400 fs/namei.c:1628 lookup_one_len+0x17f/0x2c0 fs/namei.c:2642 incfs_lookup_dentry+0x5f/0xb0 fs/incfs/data_mgmt.c:212 dir_lookup+0x3b8/0x6e0 fs/incfs/vfs.c:967 lookup_open fs/namei.c:3162 [inline] open_last_lookups fs/namei.c:3253 [inline] path_openat+0x11c0/0x3500 fs/namei.c:3441 do_filp_open+0x200/0x440 fs/namei.c:3471 do_sys_openat2+0x13b/0x470 fs/open.c:1211 do_sys_open fs/open.c:1227 [inline] __do_sys_creat fs/open.c:1301 [inline] __se_sys_creat fs/open.c:1295 [inline] __x64_sys_creat+0x11f/0x160 fs/open.c:1295 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f46c3d70069 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdcb2320c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f46c3d70069 RDX: 00007f46c3d70069 RSI: 0000000000000000 RDI: 00000000200000c0 RBP: 00007f46c3d34050 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f46c3d340e0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace b82aff7385d202db ]--- RIP: 0010:stack_trace_save+0x86/0x1e0 kernel/stacktrace.c:115 Code: 4c 8d 7c 24 20 49 c1 ef 03 48 b8 f1 f1 f1 f1 00 00 00 f3 4b 89 04 2f 43 c7 44 2f 08 f3 f3 f3 f3 ba 18 00 00 00 4c 89 f7 31 f6 b5 04 4b 00 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 RSP: 0018:ffffc90000b80000 EFLAGS: 00010246 RAX: f3000000f1f1f1f1 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000018 RSI: 0000000000000000 RDI: ffffc90000b80040 RBP: ffffc90000b800d0 R08: dffffc0000000000 R09: ffffc90000b800e0 R10: 0000000000000004 R11: 0000000000000000 R12: ffffc90000b800e0 R13: dffffc0000000000 R14: ffffc90000b80040 R15: 1ffff92000170004 FS: 000055555557f300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000b7fff8 CR3: 000000010d8cd000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 8d 7c 24 20 lea 0x20(%rsp),%r15 5: 49 c1 ef 03 shr $0x3,%r15 9: 48 b8 f1 f1 f1 f1 00 movabs $0xf3000000f1f1f1f1,%rax 10: 00 00 f3 13: 4b 89 04 2f mov %rax,(%r15,%r13,1) 17: 43 c7 44 2f 08 f3 f3 movl $0xf3f3f3f3,0x8(%r15,%r13,1) 1e: f3 f3 20: ba 18 00 00 00 mov $0x18,%edx 25: 4c 89 f7 mov %r14,%rdi 28: 31 f6 xor %esi,%esi * 2a: e8 b5 04 4b 00 callq 0x4b04e4 <-- trapping instruction 2f: 4c 89 f0 mov %r14,%rax 32: 48 c1 e8 03 shr $0x3,%rax 36: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 3b: 74 08 je 0x45 3d: 4c 89 f7 mov %r14,%rdi