INFO: task syz-executor.1:26854 blocked for more than 143 seconds.
Not tainted 5.3.0-rc4+ #103
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D28784 26854 4203 0x00000004
Call Trace:
context_switch kernel/sched/core.c:3254 [inline]
__schedule+0x755/0x1580 kernel/sched/core.c:3880
schedule+0xa8/0x270 kernel/sched/core.c:3944
rwsem_down_read_slowpath+0x4cc/0xfb0 kernel/locking/rwsem.c:1090
__down_read kernel/locking/rwsem.c:1320 [inline]
down_read+0x1f4/0x3f0 kernel/locking/rwsem.c:1463
inode_lock_shared include/linux/fs.h:788 [inline]
lookup_slow+0x4a/0x80 fs/namei.c:1685
walk_component+0x747/0x2000 fs/namei.c:1808
lookup_last fs/namei.c:2271 [inline]
path_lookupat.isra.0+0x1f5/0x8d0 fs/namei.c:2316
filename_lookup+0x1b0/0x410 fs/namei.c:2346
user_path_at_empty+0x43/0x50 fs/namei.c:2606
user_path_at include/linux/namei.h:60 [inline]
ksys_chroot+0xc3/0x2d0 fs/open.c:512
__do_sys_chroot fs/open.c:541 [inline]
__se_sys_chroot fs/open.c:539 [inline]
__x64_sys_chroot+0x31/0x40 fs/open.c:539
do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007fa886923c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a1
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459829
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa8869246d4
R13: 00000000004bfc98 R14: 00000000004d19c8 R15: 00000000ffffffff
INFO: task syz-executor.1:27151 blocked for more than 143 seconds.
Not tainted 5.3.0-rc4+ #103
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D29936 27151 4203 0x00000004
Call Trace:
context_switch kernel/sched/core.c:3254 [inline]
__schedule+0x755/0x1580 kernel/sched/core.c:3880
schedule+0xa8/0x270 kernel/sched/core.c:3944
rwsem_down_write_slowpath+0x708/0xf60 kernel/locking/rwsem.c:1214
__down_write kernel/locking/rwsem.c:1365 [inline]
down_write_nested+0x140/0x160 kernel/locking/rwsem.c:1597
inode_lock_nested include/linux/fs.h:813 [inline]
filename_create+0x17c/0x4f0 fs/namei.c:3634
user_path_create fs/namei.c:3692 [inline]
do_mknodat fs/namei.c:3753 [inline]
do_mknodat+0x1a4/0x480 fs/namei.c:3741
__do_sys_mknod fs/namei.c:3793 [inline]
__se_sys_mknod fs/namei.c:3791 [inline]
__x64_sys_mknod+0x7b/0xb0 fs/namei.c:3791
do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007fa8868e1c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa8868e26d4
R13: 00000000004c5cec R14: 00000000004da6e0 R15: 00000000ffffffff
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 1051 Comm: khungtaskd Not tainted 5.3.0-rc4+ #103
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
watchdog+0x9d0/0xef0 kernel/hung_task.c:289
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.113 msecs
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0-rc4+ #103
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:stack_trace_consume_entry+0x12e/0x190 kernel/stacktrace.c:95
Code: c1 ea 03 80 3c 02 00 75 62 4d 89 2c 24 44 8b 63 10 8b 5b 08 44 89 e7 89 de e8 ce 09 11 00 41 39 dc 41 0f 92 c7 e8 c2 08 11 00 <44> 89 f8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 af 08 11 00 41 83 ee
RSP: 0018:ffff8880ae909620 EFLAGS: 00000006
RAX: ffff8880a98d6340 RBX: 0000000000000040 RCX: ffffffff81616872
RDX: 0000000000000100 RSI: ffffffff8161687e RDI: 0000000000000004
RBP: ffff8880ae909648 R08: ffff8880a98d6340 R09: ffff8880ae9096b0
R10: ffff8880ae909680 R11: ffff8880ae909690 R12: 000000000000001b
R13: ffffffff812ecc25 R14: 0000000000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 000000009ad0a000 CR4: 00000000001406e0
Call Trace:
arch_stack_walk+0x71/0xf0 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0xac/0xe0 kernel/stacktrace.c:123
save_stack+0x23/0x90 mm/kasan/common.c:69
set_track mm/kasan/common.c:77 [inline]
__kasan_slab_free+0x102/0x150 mm/kasan/common.c:449
kasan_slab_free+0xe/0x10 mm/kasan/common.c:457
__cache_free mm/slab.c:3425 [inline]
kmem_cache_free+0x86/0x320 mm/slab.c:3693
mempool_free_slab+0x1e/0x30 mm/mempool.c:520
mempool_free+0xeb/0x370 mm/mempool.c:502
bvec_free+0xa6/0xc0 block/bio.c:161
bio_free+0x230/0x420 block/bio.c:247
bio_put+0xda/0x110 block/bio.c:549
ext4_end_bio+0x198/0x6d0 fs/ext4/page-io.c:335
bio_endio+0x611/0xaf0 block/bio.c:1830
req_bio_endio block/blk-core.c:239 [inline]
blk_update_request+0x32e/0xc10 block/blk-core.c:1424
scsi_end_request+0x7f/0x840 drivers/scsi/scsi_lib.c:579
scsi_io_completion+0x20a/0x1420 drivers/scsi/scsi_lib.c:963
scsi_finish_command+0x3b7/0x670 drivers/scsi/scsi.c:228
scsi_softirq_done+0x326/0x3b0 drivers/scsi/scsi_lib.c:1465
blk_done_softirq+0x2fe/0x4d0 block/blk-softirq.c:37
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:537 [inline]
do_IRQ+0x12c/0x200 arch/x86/kernel/irq.c:259
common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:607
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: c8 fe 6e fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d c4 a3 4a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d b4 a3 4a 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 4e bb 22 fa e8 79
RSP: 0018:ffff8880a98e7d68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffdd
RAX: 1ffffffff11a5e65 RBX: ffff8880a98d6340 RCX: 1ffffffff134b48e
RDX: dffffc0000000000 RSI: ffffffff8177ed9e RDI: ffffffff873d7a6c
RBP: ffff8880a98e7d98 R08: ffff8880a98d6340 R09: ffffed101531ac69
R10: ffffed101531ac68 R11: ffff8880a98d6347 R12: dffffc0000000000
R13: ffffffff89a57278 R14: 0000000000000000 R15: 0000000000000001
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571
default_idle_call+0x84/0xb0 kernel/sched/idle.c:94
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x413/0x760 kernel/sched/idle.c:263
cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:354
start_secondary+0x315/0x430 arch/x86/kernel/smpboot.c:264
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241