[ 8.862307][ T134] readlink (134) used greatest stack depth: 24816 bytes left [ 8.862327][ T134] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 8.862329][ T134] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 134, name: readlink [ 8.862330][ T134] preempt_count: 2, expected: 0 [ 8.862331][ T134] RCU nest depth: 0, expected: 0 [ 8.862332][ T134] locks held by readlink/134: 5, last CPU#3: [ 8.862335][ T134] #0: ffffffff8b4027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 8.862347][ T134] #1: ffffffff8b569cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 8.862352][ T134] #2: ffffffff8b569d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 8.862355][ T134] #3: ffffffff8b489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 8.862359][ T134] #4: ffffffff8b489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 8.862362][ T134] irq event stamp: 13212 [ 8.862363][ T134] hardirqs last enabled at (13211): [] __down_trylock_console_sem+0x86/0xa0 [ 8.862367][ T134] hardirqs last disabled at (13212): [] console_emit_next_record+0x3d4/0x4c0 [ 8.862368][ T134] softirqs last enabled at (12946): [] handle_softirqs+0x67c/0x900 [ 8.862370][ T134] softirqs last disabled at (12939): [] __irq_exit_rcu+0x145/0x1c0 [ 8.862373][ T134] Preemption disabled at: [ 8.862373][ T134] [<0000000000000000>] 0x0 [ 8.862380][ T134] CPU: 3 UID: 0 PID: 134 Comm: readlink Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 8.862383][ T134] Tainted: [W]=WARN [ 8.862384][ T134] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.862386][ T134] Call Trace: [ 8.862387][ T134] [ 8.862389][ T134] dump_stack_lvl+0x6f/0xa0 [ 8.862394][ T134] __might_resched.cold+0x1fe/0x2c1 [ 8.862399][ T134] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 8.862402][ T134] ? __kmalloc_noprof+0xdb/0x760 [ 8.862407][ T134] __kmalloc_noprof+0x443/0x760 [ 8.862409][ T134] ? alloc_buf.isra.0+0x4b/0x260 [ 8.862415][ T134] ? do_raw_spin_unlock+0x59/0x250 [ 8.862418][ T134] alloc_buf.isra.0+0x4b/0x260 [ 8.862422][ T134] put_chars+0x1e1/0x2f0 [ 8.862425][ T134] ? __send_to_port+0x420/0x420 [ 8.862426][ T134] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 8.862430][ T134] ? validate_chain+0x38b/0xc20 [ 8.862436][ T134] hvc_console_print+0x292/0x780 [ 8.862442][ T134] ? hvc_write+0x3a0/0x3a0 [ 8.862445][ T134] ? rcu_is_watching+0x16/0xd0 [ 8.862447][ T134] ? lock_acquire+0x13c/0x160 [ 8.862451][ T134] console_emit_next_record+0x22f/0x4c0 [ 8.862454][ T134] ? devkmsg_read+0x4b0/0x4b0 [ 8.862455][ T134] ? console_flush_one_record+0x106/0x710 [ 8.862458][ T134] ? rcu_is_watching+0x16/0xd0 [ 8.862460][ T134] ? lock_acquire+0x13c/0x160 [ 8.862464][ T134] console_flush_one_record+0x46f/0x710 [ 8.862467][ T134] ? console_emit_next_record+0x4c0/0x4c0 [ 8.862469][ T134] ? __lock_acquire+0x518/0xc20 [ 8.862474][ T134] console_unlock+0xee/0x1f0 [ 8.862476][ T134] ? console_flush_one_record+0x710/0x710 [ 8.862477][ T134] ? rcu_is_watching+0x16/0xd0 [ 8.862479][ T134] ? lock_acquire+0x60/0x160 [ 8.862483][ T134] ? __down_trylock_console_sem+0x5e/0xa0 [ 8.862485][ T134] ? vprintk_emit+0x320/0x3e0 [ 8.862488][ T134] vprintk_emit+0x37c/0x3e0 [ 8.862491][ T134] ? wake_up_klogd_work_func+0x90/0x90 [ 8.862494][ T134] ? __lock_acquire+0x518/0xc20 [ 8.862500][ T134] _printk+0xc7/0x100 [ 8.862504][ T134] ? snapshot_read.cold+0x21/0x21 [ 8.862507][ T134] ? do_raw_spin_lock+0x131/0x280 [ 8.862510][ T134] ? __rwlock_init+0x150/0x150 [ 8.862514][ T134] ? do_raw_spin_lock+0x131/0x280 [ 8.862517][ T134] do_exit.cold+0x82/0x9c [ 8.862520][ T134] ? exit_notify+0x890/0x890 [ 8.862522][ T134] ? __lock_release.isra.0+0x69/0x1a0 [ 8.862525][ T134] ? rcu_is_watching+0x16/0xd0 [ 8.862528][ T134] do_group_exit+0xb8/0x370 [ 8.862531][ T134] __x64_sys_exit_group+0x3c/0x50 [ 8.862533][ T134] x64_sys_call+0x1567/0x1570 [ 8.862536][ T134] do_syscall_64+0xff/0x530 [ 8.862540][ T134] ? exc_page_fault+0xee/0x100 [ 8.862543][ T134] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 8.862545][ T134] RIP: 0033:0x7f7503b601b8 [ 8.862547][ T134] Code: Unable to access opcode bytes at 0x7f7503b6018e. [ 8.862548][ T134] RSP: 002b:00007ffe9d51b148 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 8.862550][ T134] RAX: ffffffffffffffda RBX: 00007f7503c90f88 RCX: 00007f7503b601b8 [ 8.862552][ T134] RDX: 00007f7503a9da48 RSI: ffffffffffffffb0 RDI: 0000000000000000 [ 8.862553][ T134] RBP: 00007ffe9d51b1a0 R08: 0000000000000000 R09: 0000000000001010 [ 8.862553][ T134] R10: 00007ffe9d51b000 R11: 0000000000000246 R12: 0000000000000002 [ 8.862554][ T134] R13: 0000000000000000 R14: 00007f7503c8f680 R15: 00007f7503c90fa0 [ 8.862561][ T134]