b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
INFO: task syz-executor0:18260 blocked for more than 140 seconds.
__find_get_block_slow() failed. block=1, b_blocknr=8
Not tainted 5.0.0-rc2+ #33
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
syz-executor0 D20440 18260 1 0x00000004
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
Call Trace:
__find_get_block_slow() failed. block=1, b_blocknr=8
context_switch kernel/sched/core.c:2831 [inline]
__schedule+0x897/0x1e60 kernel/sched/core.c:3472
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
schedule+0xfe/0x350 kernel/sched/core.c:3516
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
__rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:280 [inline]
rwsem_down_read_failed+0x360/0x6d0 kernel/locking/rwsem-xadd.c:297
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
b_state=0x00000029, b_size=512
__down_read arch/x86/include/asm/rwsem.h:83 [inline]
down_read+0x9b/0x120 kernel/locking/rwsem.c:26
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
inode_lock_shared include/linux/fs.h:767 [inline]
lookup_slow+0x4a/0x80 fs/namei.c:1687
walk_component+0x8e5/0x26a0 fs/namei.c:1810
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
link_path_walk.part.0+0xa57/0x1550 fs/namei.c:2141
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
link_path_walk fs/namei.c:2072 [inline]
path_openat+0x222/0x5650 fs/namei.c:3533
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
do_filp_open+0x26f/0x370 fs/namei.c:3564
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
do_sys_open+0x59a/0x7c0 fs/open.c:1063
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
__do_sys_open fs/open.c:1081 [inline]
__se_sys_open fs/open.c:1076 [inline]
__x64_sys_open+0x7e/0xc0 fs/open.c:1076
do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
entry_SYSCALL_64_after_hwframe+0x49/0xbe
__find_get_block_slow() failed. block=1, b_blocknr=8
RIP: 0033:0x4560c0
b_state=0x00000029, b_size=512
Code: 31 c0 e9 45 ff ff ff 0f 1f 00 80 3f 00 0f 84 f7 00 00 00 55 53 b9 02 00 00 00 be 00 08 09 00 89 c8 48 81 ec 98 00 00 00 0f 05 <48> 3d 00 f0 ff ff 48 89 c3 0f 87 e9 00 00 00 85 db 0f 88 2f 01 00
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
RSP: 002b:00007ffe9b8723a0 EFLAGS: 00000206 ORIG_RAX: 0000000000000002
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004560c0
__find_get_block_slow() failed. block=1, b_blocknr=8
RDX: 0000000000000000 RSI: 0000000000090800 RDI: 00000000004bcbd6
b_state=0x00000029, b_size=512
RBP: 0000000000000460 R08: 0000000000000001 R09: 0000000001241940
device loop0 blocksize: 4096
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000016
R13: 00000000000c120c R14: 0000000000000193 R15: 0000000000000000
Showing all locks held in the system:
__find_get_block_slow() failed. block=1, b_blocknr=8
1 lock held by khungtaskd/1040:
#0: 00000000aaa839b0 (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389
1 lock held by rsyslogd/8040:
b_state=0x00000029, b_size=512
2 locks held by getty/8131:
#0: 000000007989116f (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
device loop0 blocksize: 4096
#1: 00000000a0d902b2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
__find_get_block_slow() failed. block=1, b_blocknr=8
2 locks held by getty/8132:
b_state=0x00000029, b_size=512
#0: 00000000cdf26565 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
device loop0 blocksize: 4096
#1: 00000000932cc951 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
__find_get_block_slow() failed. block=1, b_blocknr=8
2 locks held by getty/8133:
b_state=0x00000029, b_size=512
#0: 000000008a86e441 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
device loop0 blocksize: 4096
#1: 000000002f15fd14 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
__find_get_block_slow() failed. block=1, b_blocknr=8
2 locks held by getty/8134:
b_state=0x00000029, b_size=512
#0: 00000000afe252b8 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
#1: 0000000012d271e4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
2 locks held by getty/8135:
#0: 000000002e188b5d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
device loop0 blocksize: 4096
#1: 0000000082025b0d (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
__find_get_block_slow() failed. block=1, b_blocknr=8
2 locks held by getty/8136:
b_state=0x00000029, b_size=512
#0: 0000000017135b1d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
device loop0 blocksize: 4096
#1: 00000000519040d3 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
__find_get_block_slow() failed. block=1, b_blocknr=8
2 locks held by getty/8137:
b_state=0x00000029, b_size=512
#0: 000000001d9b25b4 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341
device loop0 blocksize: 4096
#1: 00000000d22a23f0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
1 lock held by syz-executor0/18260:
device loop0 blocksize: 4096
#0: 00000000f60722a9 (&sb->s_type->i_mutex_key#19){++++}, at: inode_lock_shared include/linux/fs.h:767 [inline]
#0: 00000000f60722a9 (&sb->s_type->i_mutex_key#19){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687
__find_get_block_slow() failed. block=1, b_blocknr=8
7 locks held by syz-executor0/26436:
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
=============================================
NMI backtrace for cpu 0
__find_get_block_slow() failed. block=1, b_blocknr=8
CPU: 0 PID: 1040 Comm: khungtaskd Not tainted 5.0.0-rc2+ #33
b_state=0x00000029, b_size=512
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+0x1db/0x2d0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
device loop0 blocksize: 4096
nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62
__find_get_block_slow() failed. block=1, b_blocknr=8
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
b_state=0x00000029, b_size=512
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0xbbb/0x1170 kernel/hung_task.c:287
device loop0 blocksize: 4096
__find_get_block_slow() failed. block=1, b_blocknr=8
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
kthread+0x357/0x430 kernel/kthread.c:246
__find_get_block_slow() failed. block=1, b_blocknr=8
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
b_state=0x00000029, b_size=512
device loop0 blocksize: 4096
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.445 msecs
NMI backtrace for cpu 1
CPU: 1 PID: 26436 Comm: syz-executor0 Not tainted 5.0.0-rc2+ #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:update_load_avg+0xbd7/0x23b0 kernel/sched/fair.c:3501
Code: fd ff ff 04 0f 85 98 07 00 00 45 85 ff 75 43 48 ba 00 00 00 00 00 fc ff df 48 03 95 68 fd ff ff 31 c0 b9 09 00 00 00 48 89 d7 <f3> 48 ab 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 72 0b 00 00
RSP: 0018:ffff8880ae706eb8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8880ae72cec0 RCX: 0000000000000005
RDX: ffffed1015ce0de1 RSI: 0000000000000000 RDI: ffffed1015ce0e01
RBP: ffff8880ae707190 R08: 0000000000001c00 R09: 0000000000000000
R10: 0000000000000354 R11: 0000000000000001 R12: ffff888088a4e700
R13: ffff8880ae707168 R14: 000000bbac4d6c88 R15: 0000000000000000
FS: 00007feb18f67700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001eb7030 CR3: 00000000899eb000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
enqueue_entity+0x14a/0x20b0 kernel/sched/fair.c:3899
enqueue_task_fair+0x237/0x10c0 kernel/sched/fair.c:5133
enqueue_task kernel/sched/core.c:730 [inline]
activate_task+0x11d/0x470 kernel/sched/core.c:751
ttwu_activate kernel/sched/core.c:1643 [inline]
ttwu_do_activate+0xd4/0x1f0 kernel/sched/core.c:1702
ttwu_queue kernel/sched/core.c:1847 [inline]
try_to_wake_up+0x997/0x1480 kernel/sched/core.c:2057
wake_up_process+0x10/0x20 kernel/sched/core.c:2129
wake_up_worker kernel/workqueue.c:838 [inline]
insert_work+0x42b/0x620 kernel/workqueue.c:1311
__queue_work+0x62f/0x1450 kernel/workqueue.c:1461
delayed_work_timer_fn+0x5d/0x90 kernel/workqueue.c:1500
call_timer_fn+0x254/0x900 kernel/time/timer.c:1325
expire_timers kernel/time/timer.c:1358 [inline]
__run_timers+0x4a2/0xd50 kernel/time/timer.c:1681
run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1694
__do_softirq+0x30b/0xb11 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x180/0x1d0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:766 [inline]
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1697 [inline]
RIP: 0010:vprintk_emit+0x84c/0x960 kernel/printk/printk.c:1930
Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 ef 00 00 00 48 83 3d 04 55 2a 08 00 74 2d e8 fd d2 19 00 48 8b bd 10 ff ff ff 57 9d <0f> 1f 44 00 00 e9 a3 fe ff ff e8 e5 d2 19 00 0f 0b e8 de d2 19 00
RSP: 0018:ffff8880860f6d60 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000040000 RBX: 1ffff11010c1edb2 RCX: ffffc9000a4fe000
RDX: 0000000000040000 RSI: ffffffff81682bf3 RDI: 0000000000000246
RBP: ffff8880860f6e58 R08: 0000000000000006 R09: ffff888088476918
R10: ffff888088476000 R11: 0000000000000000 R12: 0000000000000200
R13: ffffed1010c1edbc R14: 0000000000000000 R15: ffff8880860f6e30
vprintk_default+0x28/0x30 kernel/printk/printk.c:1958
vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:398
printk+0xba/0xed kernel/printk/printk.c:1991
__find_get_block_slow fs/buffer.c:237 [inline]
__find_get_block fs/buffer.c:1294 [inline]
__find_get_block.cold+0xd4/0xfb fs/buffer.c:1288
__getblk_slow fs/buffer.c:1039 [inline]
__getblk_gfp+0x295/0xd20 fs/buffer.c:1320
__bread_gfp+0x2f/0x300 fs/buffer.c:1354
sb_bread include/linux/buffer_head.h:307 [inline]
fat__get_entry+0x586/0xa40 fs/fat/dir.c:101
fat_get_entry fs/fat/dir.c:129 [inline]
fat_search_long+0x345/0x17d0 fs/fat/dir.c:479
vfat_find+0x10e/0x140 fs/fat/namei_vfat.c:697
vfat_lookup+0x10a/0x6b0 fs/fat/namei_vfat.c:711
lookup_open+0x726/0x1b80 fs/namei.c:3213
do_last fs/namei.c:3324 [inline]
path_openat+0x1983/0x5650 fs/namei.c:3534
do_filp_open+0x26f/0x370 fs/namei.c:3564
do_sys_open+0x59a/0x7c0 fs/open.c:1063
__do_sys_openat fs/open.c:1090 [inline]
__se_sys_openat fs/open.c:1084 [inline]
__x64_sys_openat+0x9d/0x100 fs/open.c:1084
do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458099
Code: 6d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 3b b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007feb18f66c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000458099
RDX: 0000000000002761 RSI: 0000000020000480 RDI: ffffffffffffffff
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007feb18f676d4
R13: 00000000004c408f R14: 00000000004d72a0 R15: 00000000ffffffff