BUG: stack guard page was hit at ffffc90007927ff8 (stack is ffffc90007928000..ffffc9000792ffff) kernel stack overflow (double-fault): 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 8938 Comm: syz-executor.4 Not tainted 5.10.110-syzkaller-01300-ge08dd85cc95e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:rcu_note_context_switch+0x85/0x10c0 kernel/rcu/tree_plugin.h:292 Code: 8d 94 24 e0 00 00 00 48 c1 ea 03 48 b8 f1 f1 f1 f1 00 f3 f3 f3 48 89 94 24 d8 00 00 00 4a 89 04 2a 65 4c 8b 3c 25 80 6d 02 00 76 4a 37 03 89 c3 83 f8 08 0f 83 64 0e 00 00 48 8d 1c dd 80 86 RSP: 0018:ffffc90007928000 EFLAGS: 00010802 RAX: f3f3f300f1f1f1f1 RBX: ffff8881f7155e00 RCX: 1ffff92000f2503c RDX: 1ffff92000f2501c RSI: ffffffff8543d040 RDI: 0000000000000001 RBP: ffffc90007928170 R08: ffffffff86c2c048 R09: ffffffff86c2c058 R10: ffffffff86c2c050 R11: ffffffff86c2c043 R12: 0000000000000001 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88814c402780 FS: 00007fd4dd28b700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90007927ff8 CR3: 000000011005e000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __schedule+0x114/0xc00 kernel/sched/core.c:4691 preempt_schedule_irq+0xce/0x140 kernel/sched/core.c:5052 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:unwind_next_frame+0x2fa/0x6b0 arch/x86/kernel/unwind_frame.c:295 Code: 89 ff e8 a9 46 73 00 49 c7 07 00 00 00 00 b0 01 e9 99 02 00 00 4d 8d 77 50 4c 89 f3 48 c1 eb 03 49 bd 00 00 00 00 00 fc ff df <42> 80 3c 2b 00 74 08 4c 89 f7 e8 d7 45 73 00 49 8b 06 48 85 c0 74 RSP: 0018:ffffc900079283f0 EFLAGS: 00000a06 RAX: ffffc9000792ff30 RBX: 1ffff92000f2509a RCX: 0000000081ad6701 RDX: dffffc0000000000 RSI: ffffffff81ad6798 RDI: ffffc9000792ff48 RBP: ffffc90007928470 R08: ffffc90007928568 R09: 0000000000000035 R10: ffffc90007928570 R11: 1ffff92000f25090 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffc900079284d0 R15: ffffc90007928480 arch_stack_walk+0x112/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x12d/0x1f0 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:2956 [inline] slab_alloc mm/slub.c:2964 [inline] kmem_cache_alloc+0x16c/0x300 mm/slub.c:2969 kmem_cache_zalloc include/linux/slab.h:654 [inline] lsm_file_alloc security/security.c:535 [inline] security_file_alloc+0x29/0x140 security/security.c:1444 __alloc_file+0xbe/0x330 fs/file_table.c:106 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 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+0x7a2/0x1090 fs/open.c:819 vfs_open+0x73/0x80 fs/open.c:942 do_open fs/namei.c:3327 [inline] path_openat+0x2638/0x2fd0 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+0x34/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fd4de1570e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd4dd28b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fd4de26a100 RCX: 00007fd4de1570e9 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c RBP: 00007fd4de1b108d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff206eb8cf R14: 00007fd4dd28b300 R15: 0000000000022000 Modules linked in: ---[ end trace fd5651b306b09091 ]--- RIP: 0010:rcu_note_context_switch+0x85/0x10c0 kernel/rcu/tree_plugin.h:292 Code: 8d 94 24 e0 00 00 00 48 c1 ea 03 48 b8 f1 f1 f1 f1 00 f3 f3 f3 48 89 94 24 d8 00 00 00 4a 89 04 2a 65 4c 8b 3c 25 80 6d 02 00 76 4a 37 03 89 c3 83 f8 08 0f 83 64 0e 00 00 48 8d 1c dd 80 86 RSP: 0018:ffffc90007928000 EFLAGS: 00010802 RAX: f3f3f300f1f1f1f1 RBX: ffff8881f7155e00 RCX: 1ffff92000f2503c RDX: 1ffff92000f2501c RSI: ffffffff8543d040 RDI: 0000000000000001 RBP: ffffc90007928170 R08: ffffffff86c2c048 R09: ffffffff86c2c058 R10: ffffffff86c2c050 R11: ffffffff86c2c043 R12: 0000000000000001 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff88814c402780 FS: 00007fd4dd28b700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90007927ff8 CR3: 000000011005e000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8d 94 24 e0 00 00 00 lea 0xe0(%rsp),%edx 7: 48 c1 ea 03 shr $0x3,%rdx b: 48 b8 f1 f1 f1 f1 00 movabs $0xf3f3f300f1f1f1f1,%rax 12: f3 f3 f3 15: 48 89 94 24 d8 00 00 mov %rdx,0xd8(%rsp) 1c: 00 1d: 4a 89 04 2a mov %rax,(%rdx,%r13,1) 21: 65 4c 8b 3c 25 80 6d mov %gs:0x26d80,%r15 28: 02 00 * 2a: e8 76 4a 37 03 callq 0x3374aa5 <-- trapping instruction 2f: 89 c3 mov %eax,%ebx 31: 83 f8 08 cmp $0x8,%eax 34: 0f 83 64 0e 00 00 jae 0xe9e 3a: 48 rex.W 3b: 8d .byte 0x8d 3c: 1c dd sbb $0xdd,%al 3e: 80 .byte 0x80 3f: 86 .byte 0x86