INFO: task syz.0.3118:14762 blocked for more than 143 seconds.
Not tainted 6.11.0-rc7-syzkaller-01396-g46ae4d0a4897 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.3118 state:D stack:24672 pid:14762 tgid:14762 ppid:13219 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
pipe_release+0x4e/0x330 fs/pipe.c:727
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:228
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7efe37def9
RSP: 002b:00007ffc0f6d62a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f7efe537a80 RCX: 00007f7efe37def9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f7efe537a80 R08: 0000000000000006 R09: 00007ffc0f6d659f
R10: 00000000003ffc40 R11: 0000000000000246 R12: 00000000000a369c
R13: 00007ffc0f6d63b0 R14: 0000000000000032 R15: ffffffffffffffff
INFO: task syz.0.3118:14767 blocked for more than 144 seconds.
Not tainted 6.11.0-rc7-syzkaller-01396-g46ae4d0a4897 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.3118 state:D stack:27360 pid:14767 tgid:14762 ppid:13219 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
link_pipe fs/splice.c:1891 [inline]
do_tee+0x371/0xe30 fs/splice.c:1994
__do_sys_tee fs/splice.c:2022 [inline]
__se_sys_tee fs/splice.c:2006 [inline]
__x64_sys_tee+0x10c/0x1b0 fs/splice.c:2006
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7efe37def9
RSP: 002b:00007f7eff0f2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000114
RAX: ffffffffffffffda RBX: 00007f7efe536058 RCX: 00007f7efe37def9
RDX: 0000000000000081 RSI: 0000000000000008 RDI: 0000000000000003
RBP: 00007f7efe3f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7efe536058 R15: 00007ffc0f6d6148
INFO: task syz.0.3118:14770 blocked for more than 146 seconds.
Not tainted 6.11.0-rc7-syzkaller-01396-g46ae4d0a4897 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.3118 state:D stack:27360 pid:14770 tgid:14762 ppid:13219 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
pipe_write+0x1c9/0x1a40 fs/pipe.c:455
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7efe37def9
RSP: 002b:00007f7eff0d1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7efe536130 RCX: 00007f7efe37def9
RDX: 0000000000000078 RSI: 0000000020000580 RDI: 0000000000000008
RBP: 00007f7efe3f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f7efe536130 R15: 00007ffc0f6d6148
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by getty/4984:
#0: ffff8880303690a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000311b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.0.3118/14762:
#0: ffff8880325ca868 (&pipe->mutex){+.+.}-{3:3}, at: pipe_release+0x4e/0x330 fs/pipe.c:727
1 lock held by syz.0.3118/14764:
#0: ffff8880325ca868 (&pipe->mutex){+.+.}-{3:3}, at: splice_file_to_pipe+0x2e/0x500 fs/splice.c:1292
2 locks held by syz.0.3118/14767:
#0: ffff88802de4d468 (&pipe->mutex){+.+.}-{3:3}, at: pipe_lock fs/pipe.c:92 [inline]
#0: ffff88802de4d468 (&pipe->mutex){+.+.}-{3:3}, at: pipe_double_lock+0x6d/0x110 fs/pipe.c:111
#1: ffff8880325ca868 (&pipe->mutex){+.+.}-{3:3}, at: link_pipe fs/splice.c:1891 [inline]
#1: ffff8880325ca868 (&pipe->mutex){+.+.}-{3:3}, at: do_tee+0x371/0xe30 fs/splice.c:1994
1 lock held by syz.0.3118/14770:
#0: ffff8880325ca868 (&pipe->mutex){+.+.}-{3:3}, at: pipe_write+0x1c9/0x1a40 fs/pipe.c:455
2 locks held by syz.4.3130/14802:
#0: ffffffff8fcf2e30 (cb_lock){++++}-{3:3}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8ec0b6e8 (nfsd_mutex){+.+.}-{3:3}, at: nfsd_nl_listener_set_doit+0x12d/0x1a90 fs/nfsd/nfsctl.c:1956
1 lock held by syz.2.3143/14837:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc7-syzkaller-01396-g46ae4d0a4897 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 14839 Comm: syz.2.3143 Not tainted 6.11.0-rc7-syzkaller-01396-g46ae4d0a4897 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:19 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:87 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:147 [inline]
RIP: 0010:lock_release+0x60e/0xa30 kernel/locking/lockdep.c:5783
Code: e6 0a 8c e8 14 90 4b 0a b8 ff ff ff ff 65 0f c1 05 57 91 92 7e 83 f8 01 0f 85 9a 00 00 00 4c 89 f3 48 c1 eb 03 42 80 3c 3b 00 <74> 08 4c 89 f7 e8 78 dc 8a 00 48 c7 84 24 90 00 00 00 00 00 00 00
RSP: 0018:ffffc9001021f840 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff92002043f1a RCX: ffffc9001021f803
RDX: 0000000000000002 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c608f80
RBP: ffffc9001021f970 R08: ffffffff90189eef R09: 1ffffffff20313dd
R10: dffffc0000000000 R11: fffffbfff20313de R12: 1ffff92002043f14
R13: 0000000000000046 R14: ffffc9001021f8d0 R15: dffffc0000000000
FS: 00007f9a515826c0(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9a51582000 CR3: 000000005cb9e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
local_lock_release include/linux/local_lock_internal.h:38 [inline]
consume_obj_stock mm/memcontrol.c:2797 [inline]
obj_cgroup_charge+0x2f2/0x5d0 mm/memcontrol.c:2919
__memcg_slab_post_alloc_hook+0x1b1/0x7e0 mm/memcontrol.c:3012
memcg_slab_post_alloc_hook mm/slub.c:2164 [inline]
slab_post_alloc_hook mm/slub.c:4002 [inline]
slab_alloc_node mm/slub.c:4041 [inline]
kmem_cache_alloc_noprof+0x1de/0x2a0 mm/slub.c:4048
__sigqueue_alloc+0x42e/0x540 kernel/signal.c:428
__send_signal_locked+0x22f/0xdc0 kernel/signal.c:1119
do_send_sig_info kernel/signal.c:1301 [inline]
group_send_sig_info+0x292/0x310 kernel/signal.c:1451
bpf_send_signal_common+0x2dd/0x430 kernel/trace/bpf_trace.c:881
____bpf_send_signal kernel/trace/bpf_trace.c:886 [inline]
bpf_send_signal+0x19/0x30 kernel/trace/bpf_trace.c:884
bpf_prog_7ba5217f62dcd359+0x40/0x44
bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
__bpf_prog_run include/linux/filter.h:691 [inline]
bpf_prog_run include/linux/filter.h:698 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline]
bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2447
trace_sys_enter+0x93/0xd0 include/trace/events/syscalls.h:18
syscall_trace_enter+0xf8/0x150 kernel/entry/common.c:61
syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline]
syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline]
do_syscall_64+0xcc/0x230 arch/x86/entry/common.c:79
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9a50719869
Code: 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 04 25
RSP: 002b:00007f9a51581b40 EFLAGS: 00000246 ORIG_RAX: 000000000000000f
RAX: ffffffffffffffda RBX: 00007f9a50936060 RCX: 00007f9a50719869
RDX: 00007f9a51581b40 RSI: 00007f9a51581c70 RDI: 0000000000000011
RBP: 00007f9a50936058 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9a50936064
R13: 0000000000000000 R14: 00007ffdb9096d50 R15: 00007ffdb9096e38