BUG: stack guard page was hit at ffffc90000c1fff8 (stack is ffffc90000c20000..ffffc90000c27fff) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 18103 Comm: syz-executor.1 Not tainted 5.10.102-syzkaller-00171-ge1b86e7f5cbb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:check_preemption_disabled+0xc/0x180 lib/smp_processor_id.c:13 Code: 89 e5 0f 1f 44 00 00 48 c7 c7 40 ad 49 85 48 c7 c6 80 ad 49 85 e8 04 00 00 00 5d c3 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 <53> 48 83 ec 18 49 89 f6 49 89 ff 65 48 8b 04 25 28 00 00 00 48 89 RSP: 0018:ffffc90000c20000 EFLAGS: 00010806 RAX: f3f3f300f1f1f1f1 RBX: ffff8881f7056930 RCX: 1ffff92000184044 RDX: 1ffff92000184024 RSI: ffffffff8549ad80 RDI: ffffffff8549ad40 RBP: ffffc90000c20020 R08: ffffffff86e39008 R09: ffffffff86e39018 R10: ffffffff86e39010 R11: ffffffff86e39003 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff88814e6962c0 R15: ffff88814e6962c0 FS: 00007f93feb6f700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000c1fff8 CR3: 0000000155af1000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_smp_processor_id+0x1c/0x20 lib/smp_processor_id.c:59 rcu_note_context_switch+0x8a/0x10b0 kernel/rcu/tree_plugin.h:292 __schedule+0x119/0xda0 kernel/sched/core.c:4681 preempt_schedule_irq+0xce/0x140 kernel/sched/core.c:5042 irqentry_exit_cond_resched kernel/entry/common.c:357 [inline] irqentry_exit+0x50/0x60 kernel/entry/common.c:387 sysvec_apic_timer_interrupt+0xcb/0xe0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:stack_trace_consume_entry+0xa/0x290 kernel/stacktrace.c:82 Code: 80 c1 03 38 c1 0f 8c 5c ff ff ff 4c 89 e7 e8 5d fb 4a 00 e9 4f ff ff ff e8 93 de 39 03 0f 1f 00 55 48 89 e5 41 57 41 56 41 55 <41> 54 53 48 83 ec 20 48 89 fb 48 ba 00 00 00 00 00 fc ff df 4c 8d RSP: 0018:ffffc90000c20438 EFLAGS: 00000282 RAX: ffffffff81adceb5 RBX: ffffc90000c20460 RCX: 0000000081adce01 RDX: 1ffff9200018408e RSI: ffffffff81adceb5 RDI: ffffc90000c20540 RBP: ffffc90000c20450 R08: ffffc90000c20548 R09: 0000000000000038 R10: ffffc90000c20550 R11: 0000000000000000 R12: ffff88814e6962c0 R13: ffffffff815bee70 R14: ffffc90000c20540 R15: 0000000000000000 arch_stack_walk+0x106/0x140 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:121 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 kmem_cache_zalloc include/linux/slab.h:654 [inline] __alloc_file+0x29/0x3b0 fs/file_table.c:101 alloc_empty_file+0xac/0x1b0 fs/file_table.c:151 dentry_open+0x4e/0x100 fs/open.c:956 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open fs/open.c:942 [inline] dentry_open+0xb8/0x100 fs/open.c:958 file_open+0x2a3/0x650 fs/incfs/vfs.c:1427 do_dentry_open+0x7a5/0x1090 fs/open.c:819 vfs_open+0x73/0x80 fs/open.c:942 do_open fs/namei.c:3327 [inline] path_openat+0x264d/0x3500 fs/namei.c:3444 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_openat fs/open.c:1243 [inline] __se_sys_openat fs/open.c:1238 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1238 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f93ff9ccf64 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007f93feb6ef10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f93ff9ccf64 RDX: 0000000000010000 RSI: 0000000020000080 RDI: 00000000ffffff9c RBP: 0000000020000080 R08: 0000000000000000 R09: 00000000200000c0 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000010000 R13: 0000000020000080 R14: 00007f93feb6efe0 R15: 0000000020000380 Modules linked in: ---[ end trace 188d42ce782a78cd ]--- RIP: 0010:check_preemption_disabled+0xc/0x180 lib/smp_processor_id.c:13 Code: 89 e5 0f 1f 44 00 00 48 c7 c7 40 ad 49 85 48 c7 c6 80 ad 49 85 e8 04 00 00 00 5d c3 66 90 55 48 89 e5 41 57 41 56 41 55 41 54 <53> 48 83 ec 18 49 89 f6 49 89 ff 65 48 8b 04 25 28 00 00 00 48 89 RSP: 0018:ffffc90000c20000 EFLAGS: 00010806 RAX: f3f3f300f1f1f1f1 RBX: ffff8881f7056930 RCX: 1ffff92000184044 RDX: 1ffff92000184024 RSI: ffffffff8549ad80 RDI: ffffffff8549ad40 RBP: ffffc90000c20020 R08: ffffffff86e39008 R09: ffffffff86e39018 R10: ffffffff86e39010 R11: ffffffff86e39003 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff88814e6962c0 R15: ffff88814e6962c0 FS: 00007f93feb6f700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000c1fff8 CR3: 0000000155af1000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 e5 mov %esp,%ebp 2: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 7: 48 c7 c7 40 ad 49 85 mov $0xffffffff8549ad40,%rdi e: 48 c7 c6 80 ad 49 85 mov $0xffffffff8549ad80,%rsi 15: e8 04 00 00 00 callq 0x1e 1a: 5d pop %rbp 1b: c3 retq 1c: 66 90 xchg %ax,%ax 1e: 55 push %rbp 1f: 48 89 e5 mov %rsp,%rbp 22: 41 57 push %r15 24: 41 56 push %r14 26: 41 55 push %r13 28: 41 54 push %r12 * 2a: 53 push %rbx <-- trapping instruction 2b: 48 83 ec 18 sub $0x18,%rsp 2f: 49 89 f6 mov %rsi,%r14 32: 49 89 ff mov %rdi,%r15 35: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax 3c: 00 00 3e: 48 rex.W 3f: 89 .byte 0x89