INFO: task syz-executor.2:13887 can't die for more than 143 seconds.
task:syz-executor.2 state:D stack:23768 pid:13887 ppid: 6552 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4987 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6268
schedule+0xd2/0x260 kernel/sched/core.c:6341
__bio_queue_enter+0x3c5/0x6a0 block/blk-core.c:441
bio_queue_enter block/blk.h:91 [inline]
blk_mq_get_request block/blk-mq.c:2588 [inline]
blk_mq_submit_bio+0x4ae/0x22c0 block/blk-mq.c:2632
__submit_bio block/blk-core.c:849 [inline]
__submit_bio_noacct_mq block/blk-core.c:924 [inline]
submit_bio_noacct block/blk-core.c:950 [inline]
submit_bio_noacct+0x82c/0xa20 block/blk-core.c:939
submit_bio block/blk-core.c:1011 [inline]
submit_bio+0x1ea/0x430 block/blk-core.c:969
mpage_bio_submit fs/mpage.c:66 [inline]
mpage_readahead+0x589/0x750 fs/mpage.c:393
read_pages+0x1e4/0xfa0 mm/readahead.c:129
page_cache_ra_unbounded+0x510/0x940 mm/readahead.c:210
do_page_cache_ra mm/readahead.c:268 [inline]
ondemand_readahead+0x594/0x1090 mm/readahead.c:551
page_cache_sync_ra+0x1cb/0x200 mm/readahead.c:579
page_cache_sync_readahead include/linux/pagemap.h:1013 [inline]
filemap_get_pages+0x2b2/0x1be0 mm/filemap.c:2556
filemap_read+0x315/0xeb0 mm/filemap.c:2642
generic_file_read_iter+0x3b6/0x5a0 mm/filemap.c:2792
blkdev_read_iter+0xf8/0x1d0 block/fops.c:583
call_read_iter include/linux/fs.h:2156 [inline]
generic_file_splice_read+0x453/0x6d0 fs/splice.c:311
do_splice_to+0x1bf/0x250 fs/splice.c:796
splice_direct_to_actor+0x2c2/0x8c0 fs/splice.c:870
do_splice_direct+0x1b3/0x280 fs/splice.c:979
do_sendfile+0xaf2/0x1250 fs/read_write.c:1245
__do_sys_sendfile64 fs/read_write.c:1310 [inline]
__se_sys_sendfile64 fs/read_write.c:1296 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296
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+0x44/0xae
RIP: 0033:0x7f298e82fae9
RSP: 002b:00007f298bda5188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f298e942f60 RCX: 00007f298e82fae9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007f298e889f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024002da6 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3d94fa9f R14: 00007f298bda5300 R15: 0000000000022000
INFO: task syz-executor.2:13887 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-next-20211117-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23768 pid:13887 ppid: 6552 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4987 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6268
schedule+0xd2/0x260 kernel/sched/core.c:6341
__bio_queue_enter+0x3c5/0x6a0 block/blk-core.c:441
bio_queue_enter block/blk.h:91 [inline]
blk_mq_get_request block/blk-mq.c:2588 [inline]
blk_mq_submit_bio+0x4ae/0x22c0 block/blk-mq.c:2632
__submit_bio block/blk-core.c:849 [inline]
__submit_bio_noacct_mq block/blk-core.c:924 [inline]
submit_bio_noacct block/blk-core.c:950 [inline]
submit_bio_noacct+0x82c/0xa20 block/blk-core.c:939
submit_bio block/blk-core.c:1011 [inline]
submit_bio+0x1ea/0x430 block/blk-core.c:969
mpage_bio_submit fs/mpage.c:66 [inline]
mpage_readahead+0x589/0x750 fs/mpage.c:393
read_pages+0x1e4/0xfa0 mm/readahead.c:129
page_cache_ra_unbounded+0x510/0x940 mm/readahead.c:210
do_page_cache_ra mm/readahead.c:268 [inline]
ondemand_readahead+0x594/0x1090 mm/readahead.c:551
page_cache_sync_ra+0x1cb/0x200 mm/readahead.c:579
page_cache_sync_readahead include/linux/pagemap.h:1013 [inline]
filemap_get_pages+0x2b2/0x1be0 mm/filemap.c:2556
filemap_read+0x315/0xeb0 mm/filemap.c:2642
generic_file_read_iter+0x3b6/0x5a0 mm/filemap.c:2792
blkdev_read_iter+0xf8/0x1d0 block/fops.c:583
call_read_iter include/linux/fs.h:2156 [inline]
generic_file_splice_read+0x453/0x6d0 fs/splice.c:311
do_splice_to+0x1bf/0x250 fs/splice.c:796
splice_direct_to_actor+0x2c2/0x8c0 fs/splice.c:870
do_splice_direct+0x1b3/0x280 fs/splice.c:979
do_sendfile+0xaf2/0x1250 fs/read_write.c:1245
__do_sys_sendfile64 fs/read_write.c:1310 [inline]
__se_sys_sendfile64 fs/read_write.c:1296 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296
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+0x44/0xae
RIP: 0033:0x7f298e82fae9
RSP: 002b:00007f298bda5188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f298e942f60 RCX: 00007f298e82fae9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007f298e889f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024002da6 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3d94fa9f R14: 00007f298bda5300 R15: 0000000000022000
INFO: task syz-executor.2:13894 can't die for more than 144 seconds.
task:syz-executor.2 state:D stack:29072 pid:13894 ppid: 6552 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4987 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6268
schedule+0xd2/0x260 kernel/sched/core.c:6341
blk_mq_freeze_queue_wait+0x112/0x160 block/blk-mq.c:178
__loop_clr_fd+0x1ae/0x1070 drivers/block/loop.c:1122
loop_clr_fd drivers/block/loop.c:1237 [inline]
lo_ioctl+0x398/0x17c0 drivers/block/loop.c:1562
blkdev_ioctl+0x37a/0x800 block/ioctl.c:609
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
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+0x44/0xae
RIP: 0033:0x7f298e82fae9
RSP: 002b:00007f298bd84188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f298e943020 RCX: 00007f298e82fae9
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004
RBP: 00007f298e889f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3d94fa9f R14: 00007f298bd84300 R15: 0000000000022000
INFO: task syz-executor.2:13894 blocked for more than 144 seconds.
Not tainted 5.16.0-rc1-next-20211117-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:29072 pid:13894 ppid: 6552 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4987 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6268
schedule+0xd2/0x260 kernel/sched/core.c:6341
blk_mq_freeze_queue_wait+0x112/0x160 block/blk-mq.c:178
__loop_clr_fd+0x1ae/0x1070 drivers/block/loop.c:1122
loop_clr_fd drivers/block/loop.c:1237 [inline]
lo_ioctl+0x398/0x17c0 drivers/block/loop.c:1562
blkdev_ioctl+0x37a/0x800 block/ioctl.c:609
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
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+0x44/0xae
RIP: 0033:0x7f298e82fae9
RSP: 002b:00007f298bd84188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f298e943020 RCX: 00007f298e82fae9
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004
RBP: 00007f298e889f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3d94fa9f R14: 00007f298bd84300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb83b20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
3 locks held by kworker/u4:3/54:
8 locks held by kworker/u4:5/1091:
#0: ffff8880b9c39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a6/0x490 kernel/sched/psi.c:880
#2: ffff8880b9c28298 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x5a/0x1f0 kernel/time/timer.c:946
#3: ffffffff9070c040 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x12e/0x3e0 lib/debugobjects.c:661
#4: ffff88807e9e9e58 (&ei->socket.wq.wait){..-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:137
#5: ffff888010dbb138 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline]
#5: ffff888010dbb138 (ptlock_ptr(page)#2){+.+.}-{2:2}, at: __get_locked_pte+0x2b6/0x4d0 mm/memory.c:1726
#6: ffffffff8bb83b20 (rcu_read_lock){....}-{1:2}, at: trace_sched_stat_runtime include/trace/events/sched.h:517 [inline]
#6: ffffffff8bb83b20 (rcu_read_lock){....}-{1:2}, at: update_curr+0x370/0x900 kernel/sched/fair.c:876
#7: ffff888010c69818 (&pool->lock/1){..-.}-{2:2}, at: __queue_work+0x366/0xf30 kernel/workqueue.c:1477
2 locks held by systemd-udevd/2971:
#0: ffff88801a875918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
#1: ffff88801a871360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_open+0x75/0x120 drivers/block/loop.c:1733
1 lock held by in:imklog/6224:
1 lock held by syz-executor.2/13887:
#0: ffff888144911548 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff888144911548 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: page_cache_ra_unbounded+0x1b3/0x940 mm/readahead.c:194
1 lock held by syz-executor.2/13894:
#0: ffff88801a871360 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0x7a/0x1070 drivers/block/loop.c:1106
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc1-next-20211117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 13032 Comm: kworker/1:11 Not tainted 5.16.0-rc1-next-20211117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:nsim_dev_trap_report drivers/net/netdevsim/dev.c:789 [inline]
RIP: 0010:nsim_dev_trap_report_work+0x85d/0xbc0 drivers/net/netdevsim/dev.c:843
Code: 3c 20 00 0f 85 0c 02 00 00 48 8b 55 00 4c 89 ee 48 8b 7c 24 48 e8 f3 c1 ea 01 4c 89 f7 e8 9b 2e f3 03 4c 89 ef e8 63 c0 d0 01 3e 77 26 fc 89 de bf 0e 00 00 00 48 83 c3 01 83 c6 01 e8 4b 79
RSP: 0018:ffffc90005af7c60 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff88807a8f9d40 RDI: 0000000000000003
RBP: ffff88806d81ca00 R08: 0000000000000000 R09: 0000000000000003
R10: ffffffff855171c7 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88801c8be010 R14: 0000000000000000 R15: ffff8880b9d39280
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8ffaa4d000 CR3: 0000000070564000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 3c 20 cmp $0x20,%al
2: 00 0f add %cl,(%rdi)
4: 85 0c 02 test %ecx,(%rdx,%rax,1)
7: 00 00 add %al,(%rax)
9: 48 8b 55 00 mov 0x0(%rbp),%rdx
d: 4c 89 ee mov %r13,%rsi
10: 48 8b 7c 24 48 mov 0x48(%rsp),%rdi
15: e8 f3 c1 ea 01 callq 0x1eac20d
1a: 4c 89 f7 mov %r14,%rdi
1d: e8 9b 2e f3 03 callq 0x3f32ebd
22: 4c 89 ef mov %r13,%rdi
25: e8 63 c0 d0 01 callq 0x1d0c08d
* 2a: e8 3e 77 26 fc callq 0xfc26776d <-- trapping instruction
2f: 89 de mov %ebx,%esi
31: bf 0e 00 00 00 mov $0xe,%edi
36: 48 83 c3 01 add $0x1,%rbx
3a: 83 c6 01 add $0x1,%esi
3d: e8 .byte 0xe8
3e: 4b rex.WXB
3f: 79 .byte 0x79