CPU: 0 PID: 10803 Comm: kworker/u4:20 Not tainted 6.0.0-rc5-syzkaller-48543-g968c2729e576 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Workqueue: events_unbound io_ring_exit_work RIP: 0010:io_ring_exit_work+0x3b0/0xb51 io_uring/io_uring.c:2593 Code: a8 0f 00 00 e8 38 b7 68 f4 e9 54 fd ff ff 8b 7d 94 e8 2b b7 68 f4 e9 67 ff ff ff 8b 7d 80 e8 1e b7 68 f4 eb 80 e8 a7 a8 e9 f3 <0f> 0b b8 70 17 00 00 48 89 85 78 ff ff ff 31 c0 48 89 85 70 ff ff ===================================================== BUG: KMSAN: uninit-value in show_iret_regs+0x215/0x230 arch/x86/kernel/dumpstack.c:150 show_iret_regs+0x215/0x230 arch/x86/kernel/dumpstack.c:150 __show_regs+0x31/0xc90 arch/x86/kernel/process_64.c:74 show_regs+0x6e/0xd0 arch/x86/kernel/dumpstack.c:469 __warn+0x242/0x580 kernel/panic.c:621 report_bug+0x7ff/0xa10 lib/bug.c:198 handle_bug+0x41/0x70 arch/x86/kernel/traps.c:316 exc_invalid_op+0x1b/0x50 arch/x86/kernel/traps.c:336 asm_exc_invalid_op+0x1b/0x20 io_ring_exit_work+0x3b0/0xb51 process_one_work+0xb27/0x13e0 kernel/workqueue.c:2289 worker_thread+0x1076/0x1d60 kernel/workqueue.c:2436 kthread+0x31b/0x430 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 Local variable rcu created at: __synchronize_srcu+0x41/0x220 kernel/rcu/srcutree.c:1200 synchronize_srcu+0x3ae/0x460 CPU: 0 PID: 10803 Comm: kworker/u4:20 Not tainted 6.0.0-rc5-syzkaller-48543-g968c2729e576 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Workqueue: events_unbound io_ring_exit_work =====================================================