------------[ cut here ]------------ WARNING: CPU: 2 PID: 1151 at arch/x86/mm/tlb.c:515 switch_mm_irqs_off+0x890/0xbc0 arch/x86/mm/tlb.c:515 Modules linked in: CPU: 2 PID: 1151 Comm: kworker/2:2 Not tainted 6.9.0-rc2-syzkaller-00042-g3e92c1e6cd87 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: rcu_gp process_srcu RIP: 0010:switch_mm_irqs_off+0x890/0xbc0 arch/x86/mm/tlb.c:515 Code: ff 44 8d 6b 02 48 63 d3 49 8d 8e 18 06 00 00 4d 63 ed 49 c1 e5 04 4d 8d 8d 80 d8 03 00 49 81 c5 88 d8 03 00 e9 75 fd ff ff 90 <0f> 0b 90 e9 e3 f7 ff ff 90 0f 0b 90 e8 df f5 ff ff e9 20 f8 ff ff RSP: 0018:ffffc90004c3f860 EFLAGS: 00010202 RAX: 0000000000000292 RBX: ffff888023520000 RCX: ffff888029219c80 RDX: 1ffff1100524346a RSI: ffffffff8b8f5260 RDI: ffffffff8b8f52a0 RBP: ffff88801b77cc00 R08: 0000000000000000 R09: ffffed10052433a9 R10: ffff888029219d4b R11: 0000000000000000 R12: ffff88806b23f501 R13: ffff888023b2c880 R14: ffff888029219c80 R15: ffff88806b23ea40 FS: 0000000000000000(0000) GS:ffff88806b200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe6875ad988 CR3: 000000002c7d4000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: context_switch kernel/sched/core.c:5393 [inline] __schedule+0xd2b/0x5d00 kernel/sched/core.c:6746 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7068 irqentry_exit+0x36/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:delay_tsc+0x37/0xc0 arch/x86/lib/delay.c:79 Code: 00 41 54 55 53 e8 69 16 8c f6 e8 94 8f 0c 00 41 89 c4 0f 01 f9 66 90 48 c1 e2 20 48 09 c2 48 89 d5 eb 16 f3 90 bf 01 00 00 00 44 16 8c f6 e8 6f 8f 0c 00 44 39 e0 75 36 0f 01 f9 66 90 48 c1 RSP: 0018:ffffc90004c3fb48 EFLAGS: 00000286 RAX: 0000000080000000 RBX: 0000002358bed144 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffffffff8b8f5260 RDI: 0000000000000001 RBP: 0000002358beaef4 R08: 0000000000000000 R09: ffffed102dba8d09 R10: ffff88816dd4684f R11: ffffffff8b2be400 R12: 0000000000000002 R13: 00000000000032c9 R14: ffffffff94b19560 R15: ffffffff94b19560 try_check_zero+0x235/0x560 kernel/rcu/srcutree.c:1082 srcu_advance_state kernel/rcu/srcutree.c:1702 [inline] process_srcu+0x585/0x1730 kernel/rcu/srcutree.c:1811 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254 process_scheduled_works kernel/workqueue.c:3335 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416 kthread+0x2c1/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 ---------------- Code disassembly (best guess): 0: 00 41 54 add %al,0x54(%rcx) 3: 55 push %rbp 4: 53 push %rbx 5: e8 69 16 8c f6 call 0xf68c1673 a: e8 94 8f 0c 00 call 0xc8fa3 f: 41 89 c4 mov %eax,%r12d 12: 0f 01 f9 rdtscp 15: 66 90 xchg %ax,%ax 17: 48 c1 e2 20 shl $0x20,%rdx 1b: 48 09 c2 or %rax,%rdx 1e: 48 89 d5 mov %rdx,%rbp 21: eb 16 jmp 0x39 23: f3 90 pause 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 44 16 8c f6 call 0xf68c1673 <-- trapping instruction 2f: e8 6f 8f 0c 00 call 0xc8fa3 34: 44 39 e0 cmp %r12d,%eax 37: 75 36 jne 0x6f 39: 0f 01 f9 rdtscp 3c: 66 90 xchg %ax,%ax 3e: 48 rex.W 3f: c1 .byte 0xc1