INFO: task syz-executor.0:10426 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29184 pid:10426 tgid:10417 ppid:5078 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5c70 kernel/sched/core.c:6736
__schedule_loop kernel/sched/core.c:6813 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6828
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6885
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752
blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:406
sg_ioctl_common drivers/scsi/sg.c:1126 [inline]
sg_ioctl+0x9b0/0x2760 drivers/scsi/sg.c:1160
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl fs/ioctl.c:890 [inline]
__x64_sys_ioctl+0x193/0x220 fs/ioctl.c:890
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fee25a7dda9
RSP: 002b:00007fee267480c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fee25bac050 RCX: 00007fee25a7dda9
RDX: 0000000000000000 RSI: 0000000000001276 RDI: 0000000000000003
RBP: 00007fee25aca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fee25bac050 R15: 00007ffdbbffd7a8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d7b08e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/u8:4/66:
2 locks held by getty/4821:
#0: ffff88802a5a60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
3 locks held by syz-executor.0/10421:
1 lock held by syz-executor.0/10426:
#0: ffff888020146408 (&q->debugfs_mutex){+.+.}-{3:3}, at: blk_trace_remove+0x1f/0x40 kernel/trace/blktrace.c:406
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf86/0x1210 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10421 Comm: syz-executor.0 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:rol32 include/linux/bitops.h:126 [inline]
RIP: 0010:jhash2 include/linux/jhash.h:129 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:555 [inline]
RIP: 0010:stack_depot_save_flags+0xb7/0x8f0 lib/stackdepot.c:655
Code: 44 31 cf 89 fe 29 f8 01 df c1 c6 08 31 f0 29 c3 89 de 89 c3 01 f8 c1 c3 10 31 f3 89 de 29 df 01 c3 c1 ce 0d 31 f7 29 f8 89 c6 <89> f8 01 df c1 c0 04 31 f0 83 f9 03 77 9a 83 f9 02 0f 84 fa 00 00
RSP: 0018:ffffc90003707860 EFLAGS: 00000297
RAX: 00000000c0b4d79c RBX: 00000000e22a9c47 RCX: 0000000000000003
RDX: ffffc90003707934 RSI: 00000000c0b4d79c RDI: 00000000f4be1635
RBP: 0000000000000001 R08: 0000000000000007 R09: 0000000019a2b417
R10: 0000000000000000 R11: 0000000000000002 R12: 0000000000002800
R13: ffffc900037078e0 R14: 000000000000000c R15: 000000000000000c
FS: 00007fee267696c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ad47bac5f0 CR3: 000000006a3d8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
save_stack+0x16f/0x1f0 mm/page_owner.c:130
__reset_page_owner+0x51/0x2e0 mm/page_owner.c:150
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1140 [inline]
free_unref_page_prepare+0x527/0xb10 mm/page_alloc.c:2346
free_unref_page+0x33/0x3c0 mm/page_alloc.c:2486
relay_destroy_buf+0x121/0x3e0 kernel/relay.c:201
relay_remove_buf kernel/relay.c:221 [inline]
kref_put include/linux/kref.h:65 [inline]
relay_close_buf+0x156/0x1b0 kernel/relay.c:430
relay_open+0x740/0xac0 kernel/relay.c:530
do_blk_trace_setup+0x4a9/0xaa0 kernel/trace/blktrace.c:591
__blk_trace_setup+0xd8/0x180 kernel/trace/blktrace.c:631
blk_trace_setup+0x47/0x70 kernel/trace/blktrace.c:649
sg_ioctl_common drivers/scsi/sg.c:1118 [inline]
sg_ioctl+0x66d/0x2760 drivers/scsi/sg.c:1160
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl fs/ioctl.c:890 [inline]
__x64_sys_ioctl+0x193/0x220 fs/ioctl.c:890
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fee25a7dda9
Code: Unable to access opcode bytes at 0x7fee25a7dd7f.
RSP: 002b:00007fee267690c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fee25babf80 RCX: 00007fee25a7dda9
RDX: 0000000020000400 RSI: 00000000c0481273 RDI: 0000000000000003
RBP: 00007fee25aca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fee25babf80 R15: 00007ffdbbffd7a8