watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.5:476] Modules linked in: irq event stamp: 22347030 hardirqs last enabled at (22347029): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 hardirqs last disabled at (22347030): [] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1097 softirqs last enabled at (8824276): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (8824276): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636 softirqs last disabled at (8823377): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (8823377): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636 CPU: 1 PID: 476 Comm: syz-executor.5 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vsnprintf+0x80c/0x14f0 lib/vsprintf.c:2765 Code: 89 ea 48 c1 e8 03 83 e2 07 0f b6 04 18 38 d0 0f 8f 4b fa ff ff 84 c0 0f 84 43 fa ff ff 4c 89 ef e8 79 ad c7 fd e9 36 fa ff ff 6f 0a 81 fd 4c 8b 74 24 18 4d 39 f4 73 42 e8 60 0a 81 fd 48 8b RSP: 0018:ffffc900172076f0 EFLAGS: 00000297 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000008 RDX: 0000000000000000 RSI: ffff888011883a00 RDI: 0000000000000003 RBP: ffffffff89dfb500 R08: 0000000000000000 R09: ffffffff83f6b22f R10: 0000000000000008 R11: 0000000000000000 R12: ffff88806e98e0c4 R13: ffffffff89dfb50f R14: 0000000000000000 R15: ffffc90017207808 FS: 00007fba471a5700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa6c3c6a807 CR3: 0000000084553000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: seq_vprintf fs/seq_file.c:407 [inline] seq_printf+0x195/0x240 fs/seq_file.c:422 crypto_aead_show+0x84/0x170 crypto/aead.c:176 c_show+0x281/0x4a0 crypto/proc.c:59 traverse.part.0+0xcf/0x5f0 fs/seq_file.c:111 traverse fs/seq_file.c:101 [inline] seq_read_iter+0x8f9/0x1240 fs/seq_file.c:195 proc_reg_read_iter+0x1fb/0x2d0 fs/proc/inode.c:300 call_read_iter include/linux/fs.h:2156 [inline] io_iter_do_read fs/io_uring.c:3462 [inline] io_read+0x33c/0xff0 fs/io_uring.c:3519 io_issue_sqe+0x800/0x7010 fs/io_uring.c:6628 __io_queue_sqe fs/io_uring.c:6978 [inline] io_req_task_submit+0xce/0x450 fs/io_uring.c:2282 tctx_task_work+0x1b3/0x630 fs/io_uring.c:2206 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_signal include/linux/tracehook.h:214 [inline] handle_signal_work kernel/entry/common.c:146 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x256/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fba49c2fae9 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fba471a5188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: 0000000000003ea0 RBX: 00007fba49d42f60 RCX: 00007fba49c2fae9 RDX: 0000000000000000 RSI: 0000000000003ea0 RDI: 0000000000000003 RBP: 00007fba49c89f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fba4a276b2f R14: 00007fba471a5300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:109 [inline] NMI backtrace for cpu 0 skipped: idling at acpi_idle_do_entry+0x1c6/0x250 drivers/acpi/processor_idle.c:553 ---------------- Code disassembly (best guess): 0: 89 ea mov %ebp,%edx 2: 48 c1 e8 03 shr $0x3,%rax 6: 83 e2 07 and $0x7,%edx 9: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax d: 38 d0 cmp %dl,%al f: 0f 8f 4b fa ff ff jg 0xfffffa60 15: 84 c0 test %al,%al 17: 0f 84 43 fa ff ff je 0xfffffa60 1d: 4c 89 ef mov %r13,%rdi 20: e8 79 ad c7 fd callq 0xfdc7ad9e 25: e9 36 fa ff ff jmpq 0xfffffa60 * 2a: e8 6f 0a 81 fd callq 0xfd810a9e <-- trapping instruction 2f: 4c 8b 74 24 18 mov 0x18(%rsp),%r14 34: 4d 39 f4 cmp %r14,%r12 37: 73 42 jae 0x7b 39: e8 60 0a 81 fd callq 0xfd810a9e 3e: 48 rex.W 3f: 8b .byte 0x8b