[ 9.599258][ T157] netconsole selftest: netcons_mC4QL [ 9.599278][ T157] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 9.599280][ T157] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 157, name: bash [ 9.599282][ T157] preempt_count: 1, expected: 0 [ 9.599283][ T157] RCU nest depth: 0, expected: 0 [ 9.599284][ T157] locks held by bash/157: 4, last CPU#3: [ 9.599286][ T157] #0: ffffffffaa399cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 9.599298][ T157] #1: ffffffffaa399d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 9.599303][ T157] #2: ffffffffaa289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 9.599307][ T157] #3: ffffffffaa289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 9.599311][ T157] irq event stamp: 139196 [ 9.599313][ T157] hardirqs last enabled at (139195): [] __down_trylock_console_sem+0x86/0xa0 [ 9.599316][ T157] hardirqs last disabled at (139196): [] console_emit_next_record+0x3f8/0x4f0 [ 9.599318][ T157] softirqs last enabled at (138984): [] restore_fpregs_from_user+0x1cf/0x490 [ 9.599322][ T157] softirqs last disabled at (138982): [] restore_fpregs_from_user+0xc3/0x490 [ 9.599324][ T157] Preemption disabled at: [ 9.599325][ T157] [] vprintk_emit+0x31b/0x3e0 [ 9.599330][ T157] CPU: 3 UID: 0 PID: 157 Comm: bash Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 9.599333][ T157] Tainted: [W]=WARN [ 9.599334][ T157] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.599336][ T157] Call Trace: [ 9.599338][ T157] [ 9.599339][ T157] dump_stack_lvl+0x6f/0xa0 [ 9.599344][ T157] ? vprintk_emit+0x31b/0x3e0 [ 9.599346][ T157] __might_resched.cold+0x1fe/0x2c1 [ 9.599351][ T157] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 9.599354][ T157] ? __kmalloc_noprof+0xdb/0x760 [ 9.599359][ T157] __kmalloc_noprof+0x443/0x760 [ 9.599361][ T157] ? alloc_buf.isra.0+0x4b/0x260 [ 9.599367][ T157] ? do_raw_spin_unlock+0x59/0x250 [ 9.599369][ T157] alloc_buf.isra.0+0x4b/0x260 [ 9.599372][ T157] put_chars+0x1e1/0x2f0 [ 9.599375][ T157] ? __send_to_port+0x420/0x420 [ 9.599376][ T157] ? printk_get_next_message+0x2fe/0x7d0 [ 9.599380][ T157] ? rcu_read_lock_any_held+0x3c/0x90 [ 9.599386][ T157] ? validate_chain+0x38b/0xc20 [ 9.599390][ T157] hvc_console_print+0x292/0x780 [ 9.599392][ T157] ? __lock_acquire+0x518/0xc20 [ 9.599394][ T157] ? __lock_acquire+0x518/0xc20 [ 9.599398][ T157] ? hvc_write+0x3a0/0x3a0 [ 9.599401][ T157] ? rcu_is_watching+0x16/0xd0 [ 9.599404][ T157] ? lock_acquire+0x13c/0x160 [ 9.599408][ T157] console_emit_next_record+0x252/0x4f0 [ 9.599412][ T157] ? devkmsg_read+0x4e0/0x4e0 [ 9.599416][ T157] ? rcu_is_watching+0x16/0xd0 [ 9.599418][ T157] ? lock_acquire+0x13c/0x160 [ 9.599421][ T157] console_flush_one_record+0x46f/0x710 [ 9.599425][ T157] ? console_emit_next_record+0x4f0/0x4f0 [ 9.599427][ T157] ? __lock_acquire+0x518/0xc20 [ 9.599432][ T157] console_unlock+0xee/0x1f0 [ 9.599434][ T157] ? console_flush_one_record+0x710/0x710 [ 9.599436][ T157] ? rcu_is_watching+0x16/0xd0 [ 9.599438][ T157] ? lock_acquire+0x60/0x160 [ 9.599441][ T157] ? __down_trylock_console_sem+0x5e/0xa0 [ 9.599443][ T157] ? vprintk_emit+0x320/0x3e0 [ 9.599446][ T157] vprintk_emit+0x37c/0x3e0 [ 9.599449][ T157] ? wake_up_klogd_work_func+0x90/0x90 [ 9.599452][ T157] ? _copy_from_iter+0x1bb/0x1810 [ 9.599458][ T157] devkmsg_emit.constprop.0+0xbc/0xf1 [ 9.599462][ T157] ? vprintk_emit.cold+0x107/0x107 [ 9.599466][ T157] ? __kmalloc_noprof+0x302/0x760 [ 9.599467][ T157] ? idr_get_free+0x830/0x830 [ 9.599471][ T157] ? devkmsg_write+0xd1/0x2c0 [ 9.599474][ T157] ? _copy_from_iter+0x1bb/0x1810 [ 9.599477][ T157] devkmsg_write.cold+0x5a/0x8b [ 9.599479][ T157] ? vprintk_default+0x20/0x20 [ 9.599481][ T157] ? __lock_acquire+0x518/0xc20 [ 9.599483][ T157] ? vfs_lock_file+0x1b0/0x1b0 [ 9.599488][ T157] ? vprintk_default+0x20/0x20 [ 9.599490][ T157] new_sync_write+0x33e/0x760 [ 9.599495][ T157] ? new_sync_read+0x750/0x750 [ 9.599496][ T157] ? rcu_read_lock_any_held+0x3c/0x90 [ 9.599504][ T157] vfs_write+0x6a2/0xbd0 [ 9.599508][ T157] ksys_write+0x116/0x250 [ 9.599511][ T157] ? __ia32_sys_read+0xc0/0xc0 [ 9.599513][ T157] ? do_raw_spin_unlock+0x59/0x250 [ 9.599515][ T157] ? rcu_is_watching+0x16/0xd0 [ 9.599519][ T157] do_syscall_64+0xff/0x530 [ 9.599521][ T157] ? exc_page_fault+0xee/0x100 [ 9.599524][ T157] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 9.599526][ T157] RIP: 0033:0x7f068baf954e [ 9.599530][ T157] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa [ 9.599532][ T157] RSP: 002b:00007ffcaab9c0b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 9.599535][ T157] RAX: ffffffffffffffda RBX: 00007f068bc7a580 RCX: 00007f068baf954e [ 9.599536][ T157] RDX: 0000000000000023 RSI: 000055c010a01490 RDI: 0000000000000001 [ 9.599537][ T157] RBP: 00007ffcaab9c0c0 R08: 0000000000000000 R09: 0000000000000000 [ 9.599538][ T157] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023 [ 9.599539][ T157] R13: 0000000000000023 R14: 000055c010a01490 R15: 0000000000000000 [ 9.599550][ T157] [ 10.289500][ T157] netconsole selftest: netcons_mC4QL