------------[ cut here ]------------ WARNING: CPU: 1 PID: 2971 at kernel/bpf/helpers.c:791 try_get_fmt_tmp_buf kernel/bpf/helpers.c:791 [inline] WARNING: CPU: 1 PID: 2971 at kernel/bpf/helpers.c:791 bpf_bprintf_prepare+0xf31/0x11a0 kernel/bpf/helpers.c:839 Modules linked in: CPU: 1 PID: 2971 Comm: udevd Not tainted 5.18.0-syzkaller-12122-gd678cbd2f867-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:try_get_fmt_tmp_buf kernel/bpf/helpers.c:791 [inline] RIP: 0010:bpf_bprintf_prepare+0xf31/0x11a0 kernel/bpf/helpers.c:839 Code: ff e8 93 f8 ea ff 48 83 7c 24 08 00 41 bd 04 00 00 00 0f 85 8a fa ff ff e8 7c f8 ea ff 8d 6b 03 e9 f7 f6 ff ff e8 6f f8 ea ff <0f> 0b 65 ff 0d de b4 73 7e bf 01 00 00 00 41 bc f0 ff ff ff e8 16 RSP: 0018:ffffc90002d7e780 EFLAGS: 00010093 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: ffff88807dfabb00 RSI: ffffffff818f8be1 RDI: 0000000000000005 RBP: ffffc90002d7e8b8 R08: 0000000000000005 R09: 0000000000000003 R10: 0000000000000004 R11: 0000000000000001 R12: 0000000000000003 R13: 0000000000000004 R14: ffffc90002d7e970 R15: 0000000000000003 FS: 00007f17e75cf840(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a120075288 CR3: 000000001d494000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ____bpf_trace_printk kernel/trace/bpf_trace.c:385 [inline] bpf_trace_printk+0x10d/0x260 kernel/trace/bpf_trace.c:374 bpf_prog_0605f9f479290f07+0x2f/0x33 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2050 [inline] bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2087 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95 trace_contention_begin.constprop.0+0xda/0x1b0 include/trace/events/lock.h:95 __pv_queued_spin_lock_slowpath+0x103/0xb50 kernel/locking/qspinlock.c:405 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0x41/0x50 kernel/locking/spinlock.c:162 ____bpf_trace_printk kernel/trace/bpf_trace.c:390 [inline] bpf_trace_printk+0x134/0x260 kernel/trace/bpf_trace.c:374 bpf_prog_0605f9f479290f07+0x2f/0x33 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2050 [inline] bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2087 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95 trace_contention_begin.constprop.0+0xda/0x1b0 include/trace/events/lock.h:95 __pv_queued_spin_lock_slowpath+0x103/0xb50 kernel/locking/qspinlock.c:405 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0x41/0x50 kernel/locking/spinlock.c:162 ____bpf_trace_printk kernel/trace/bpf_trace.c:390 [inline] bpf_trace_printk+0x134/0x260 kernel/trace/bpf_trace.c:374 bpf_prog_0605f9f479290f07+0x2f/0x33 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2050 [inline] bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2087 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95 trace_contention_begin.constprop.0+0xda/0x1b0 include/trace/events/lock.h:95 __pv_queued_spin_lock_slowpath+0x103/0xb50 kernel/locking/qspinlock.c:405 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] lockdep_lock kernel/locking/lockdep.c:143 [inline] graph_lock kernel/locking/lockdep.c:169 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:3764 [inline] validate_chain kernel/locking/lockdep.c:3797 [inline] __lock_acquire+0x333f/0x5660 kernel/locking/lockdep.c:5053 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162 ____bpf_trace_printk kernel/trace/bpf_trace.c:390 [inline] bpf_trace_printk+0x134/0x260 kernel/trace/bpf_trace.c:374 bpf_prog_0605f9f479290f07+0x2f/0x33 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2050 [inline] bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2087 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95 trace_contention_begin+0xc0/0x150 include/trace/events/lock.h:95 __mutex_lock_common kernel/locking/mutex.c:605 [inline] __mutex_lock+0x13c/0x1350 kernel/locking/mutex.c:747 kernfs_get_open_node fs/kernfs/file.c:524 [inline] kernfs_fop_open+0x7e8/0xe00 fs/kernfs/file.c:693 do_dentry_open+0x4a1/0x11f0 fs/open.c:848 do_open fs/namei.c:3527 [inline] path_openat+0x1c71/0x2910 fs/namei.c:3660 do_filp_open+0x1aa/0x400 fs/namei.c:3687 do_sys_openat2+0x16d/0x4c0 fs/open.c:1278 do_sys_open fs/open.c:1294 [inline] __do_sys_openat fs/open.c:1310 [inline] __se_sys_openat fs/open.c:1305 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1305 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f17e7125697 Code: 25 00 00 41 00 3d 00 00 41 00 74 37 64 8b 04 25 18 00 00 00 85 c0 75 5b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 85 00 00 00 48 83 c4 68 5d 41 5c c3 0f 1f RSP: 002b:00007ffcc7516d30 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055a11ff7ccc0 RCX: 00007f17e7125697 RDX: 0000000000080000 RSI: 00007ffcc7516e68 RDI: 00000000ffffff9c RBP: 00007ffcc7516e68 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 000055a11ff7ccc0 R14: 0000000000000001 R15: 0000000000000000