INFO: task syz-executor.5:13690 blocked for more than 143 seconds.
Not tainted 6.9.0-rc4-syzkaller-00329-g48cf398f15fc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:25616 pid:13690 tgid:13685 ppid:13080 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
bfs_lookup+0x139/0x270 fs/bfs/dir.c:136
lookup_open fs/namei.c:3475 [inline]
open_last_lookups fs/namei.c:3566 [inline]
path_openat+0x1035/0x3240 fs/namei.c:3796
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f8b47dea9
RSP: 002b:00007f8f8c2940c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8f8b5ac050 RCX: 00007f8f8b47dea9
RDX: 0000000000000000 RSI: 0000000020000200 RDI: ffffffffffffff9c
RBP: 00007f8f8b4ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8f8b5ac050 R15: 00007ffc38d74e78
INFO: task syz-executor.5:13692 blocked for more than 143 seconds.
Not tainted 6.9.0-rc4-syzkaller-00329-g48cf398f15fc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23696 pid:13692 tgid:13685 ppid:13080 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1af/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:795 [inline]
open_last_lookups fs/namei.c:3563 [inline]
path_openat+0x7d3/0x3240 fs/namei.c:3796
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f8b47dea9
RSP: 002b:00007f8f8c2730c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8f8b5ac120 RCX: 00007f8f8b47dea9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f8f8b4ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8f8b5ac120 R15: 00007ffc38d74e78
INFO: task syz-executor.5:13695 blocked for more than 144 seconds.
Not tainted 6.9.0-rc4-syzkaller-00329-g48cf398f15fc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27888 pid:13695 tgid:13685 ppid:13080 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:805 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1708
walk_component fs/namei.c:2004 [inline]
link_path_walk+0x9ea/0xea0 fs/namei.c:2331
path_openat+0x24a/0x3240 fs/namei.c:3795
do_filp_open+0x235/0x490 fs/namei.c:3826
do_sys_openat2+0x13e/0x1d0 fs/open.c:1406
do_sys_open fs/open.c:1421 [inline]
__do_sys_openat fs/open.c:1437 [inline]
__se_sys_openat fs/open.c:1432 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1432
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f8b47dea9
RSP: 002b:00007f8f8c2520c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8f8b5ac1f0 RCX: 00007f8f8b47dea9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 00007f8f8b4ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8f8b5ac1f0 R15: 00007ffc38d74e78
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334d20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:4/60:
2 locks held by getty/4840:
#0: ffff88802abfe0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
4 locks held by syz-executor.5/13688:
2 locks held by syz-executor.5/13690:
#0: ffff88805dd350e0 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88805dd350e0 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: open_last_lookups fs/namei.c:3565 [inline]
#0: ffff88805dd350e0 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: path_openat+0x7c4/0x3240 fs/namei.c:3796
#1: ffff88807d1402d8 (&info->bfs_lock){+.+.}-{3:3}, at: bfs_lookup+0x139/0x270 fs/bfs/dir.c:136
2 locks held by syz-executor.5/13692:
#0: ffff8880205fe420 (sb_writers#27){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88805dd350e0 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:795 [inline]
#1: ffff88805dd350e0 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: open_last_lookups fs/namei.c:3563 [inline]
#1: ffff88805dd350e0 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: path_openat+0x7d3/0x3240 fs/namei.c:3796
1 lock held by syz-executor.5/13695:
#0: ffff88805dd350e0 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
#0: ffff88805dd350e0 (&type->i_mutex_dir_key#21){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1708
1 lock held by syz-executor.4/15154:
#0: ffff88802fe60420 (sb_writers#4){.+.+}-{0:0}, at: do_coredump+0x1b79/0x2b50 fs/coredump.c:763
1 lock held by syz-executor.5/15276:
#0: ffff88802fe60420 (sb_writers#4){.+.+}-{0:0}, at: do_coredump+0x1b79/0x2b50 fs/coredump.c:763
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc4-syzkaller-00329-g48cf398f15fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 60 Comm: kworker/u8:4 Not tainted 6.9.0-rc4-syzkaller-00329-g48cf398f15fc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:insn_get_displacement+0x6cd/0x9a0 arch/x86/lib/insn.c:499
Code: 41 89 6d 30 49 83 c5 35 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 59 01 00 00 41 88 5d 00 48 8b 6c 24 10 43 0f b6 04 26 <84> c0 0f 85 d0 00 00 00 c6 45 00 01 45 31 ff 44 89 f8 48 83 c4 30
RSP: 0018:ffffc900015b77b0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88801b6a9e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900015b7954 R08: ffffffff8b7c763e R09: ffffc900015b7920
R10: dffffc0000000000 R11: fffff520002b6f2f R12: dffffc0000000000
R13: ffffc900015b7920 R14: 1ffff920002b6f2a R15: ffffc900015b794c
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffe8 CR3: 000000000e134000 CR4: 0000000000350ef0
Call Trace:
insn_get_immediate+0x62/0x11f0 arch/x86/lib/insn.c:621
insn_get_length arch/x86/lib/insn.c:694 [inline]
insn_decode+0x2d6/0x4c0 arch/x86/lib/insn.c:733
arch_jump_entry_size arch/x86/kernel/jump_label.c:24 [inline]
__jump_label_patch+0xe8/0x490 arch/x86/kernel/jump_label.c:45
arch_jump_label_transform_queue+0x68/0x100 arch/x86/kernel/jump_label.c:137
__jump_label_update+0x177/0x3a0 kernel/jump_label.c:475
static_key_disable_cpuslocked+0xce/0x1c0 kernel/jump_label.c:235
static_key_disable+0x1a/0x20 kernel/jump_label.c:243
toggle_allocation_gate+0x1b8/0x250 mm/kfence/core.c:831
process_one_work kernel/workqueue.c:3254 [inline]
process_scheduled_works+0xa12/0x17c0 kernel/workqueue.c:3335
worker_thread+0x86d/0xd70 kernel/workqueue.c:3416
kthread+0x2f2/0x390 kernel/kthread.c:388
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244