INFO: task syz-executor.1:17764 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.1 state:D stack:27152 pid:17764 tgid:17764 ppid:8216 flags:0x00004006
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
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x3e4/0x2be0 kernel/exit.c:832
do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
get_signal+0x2390/0x2760 kernel/signal.c:2907
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0x14a/0x2a0 kernel/entry/common.c:212
do_syscall_64+0xe2/0x260 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fb2f50a91b5
RSP: 002b:00007fff7a141420 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 00007fb2f51abf80 RCX: 00007fb2f50a91b5
RDX: 00007fff7a141460 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fb2f51ad980 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000006cdd5
R13: ffffffffffffffff R14: 00007fb2f4c00000 R15: 000000000006ca94
INFO: task syz-executor.1:17765 blocked for more than 144 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.1 state:D stack:26656 pid:17765 tgid:17764 ppid:8216 flags:0x00004006
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
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x3e4/0x2be0 kernel/exit.c:832
do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
get_signal+0x2390/0x2760 kernel/signal.c:2907
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0x14a/0x2a0 kernel/entry/common.c:212
do_syscall_64+0xe2/0x260 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fb2f507dda9
RSP: 002b:00007fb2f5e17178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fb2f51abf88 RCX: 00007fb2f507dda9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb2f51abf88
RBP: 00007fb2f51abf80 R08: 00007fb2f5e176c0 R09: 00007fb2f5e176c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb2f51abf8c
R13: 000000000000000b R14: 00007fff7a1412c0 R15: 00007fff7a1413a8
INFO: task syz-executor.1:17771 blocked for more than 144 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.1 state:D stack:27232 pid:17771 tgid:17764 ppid:8216 flags:0x00004006
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_timeout+0x258/0x2a0 kernel/time/timer.c:2548
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:414 [inline]
do_coredump+0x908/0x3f60 fs/coredump.c:571
get_signal+0x2409/0x2760 kernel/signal.c:2893
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0x14a/0x2a0 kernel/entry/common.c:212
do_syscall_64+0xe2/0x260 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fb2f507dda9
RSP: 002b:00007fb2f5dd5178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 00000000000000ca RBX: 00007fb2f51ac128 RCX: 00007fb2f507dda9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fb2f51ac12c
RBP: 00007fb2f51ac120 R08: 0000000000000001 R09: 00007fb2f5dd56c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb2f51ac12c
R13: 000000000000006e R14: 00007fff7a1412c0 R15: 00007fff7a1413a8
INFO: task syz-executor.1:17776 blocked for more than 145 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.1 state:D stack:29296 pid:17776 tgid:17764 ppid:8216 flags:0x00004006
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
coredump_task_exit kernel/exit.c:439 [inline]
do_exit+0x3e4/0x2be0 kernel/exit.c:832
do_group_exit+0xd3/0x2a0 kernel/exit.c:1027
get_signal+0x2390/0x2760 kernel/signal.c:2907
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0x14a/0x2a0 kernel/entry/common.c:212
do_syscall_64+0xe2/0x260 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fb2f507dda9
RSP: 002b:00007fb2f5db4178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fb2f51ac1f8 RCX: 00007fb2f507dda9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb2f51ac1f8
RBP: 00007fb2f51ac1f0 R08: 00007fb2f5db46c0 R09: 00007fb2f5db46c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb2f51ac1fc
R13: 000000000000006e R14: 00007fff7a1412c0 R15: 00007fff7a1413a8
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
2 locks held by getty/4819:
#0: ffff88802aabd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900015e02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
4 locks held by syz-executor.0/9857:
2 locks held by syz-executor.4/22573:
#0: ffff88802a222420 (sb_writers#5){.+.+}-{0:0}, at: splice_direct_to_actor+0x346/0xa40 fs/splice.c:1108
#1: ffff8880a1ecb600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:793 [inline]
#1: ffff8880a1ecb600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_dio_write_checks fs/ext4/file.c:464 [inline]
#1: ffff8880a1ecb600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_dio_write_iter fs/ext4/file.c:551 [inline]
#1: ffff8880a1ecb600 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_file_write_iter+0x832/0x1a40 fs/ext4/file.c:696
2 locks held by syz-executor.4/22577:
#0: ffff88802a222420 (sb_writers#5){.+.+}-{0:0}, at: splice_direct_to_actor+0x346/0xa40 fs/splice.c:1108
#1: ffff8880b953e698 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
2 locks held by syz-executor.3/22582:
3 locks held by syz-executor.1/22583:
=============================================
NMI backtrace for cpu 0
CPU: 0 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5090 Comm: syz-fuzzer 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:__orc_find+0x6b/0x130 arch/x86/kernel/unwind_orc.c:99
Code: 00 4c 39 f5 0f 82 d3 00 00 00 4c 89 f3 4c 89 34 24 49 be 00 00 00 00 00 fc ff df eb 17 e8 1d 6d 50 00 49 8d 5f 04 4c 89 3c 24 10 6d 50 00 48 39 dd 72 67 e8 06 6d 50 00 48 89 e8 48 29 d8 48
RSP: 0018:ffffc9000356f3f8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffffff8fb7be08 RCX: ffffffff813c8bf4
RDX: ffff888029413c00 RSI: ffffffff813c8b93 RDI: 0000000000000006
RBP: ffffffff8fb7be1c R08: 0000000000000006 R09: ffffffff81f71627
R10: ffffffff81f7160c R11: 0000000000000002 R12: ffffffff81f71627
R13: ffffffff81f7160c R14: dffffc0000000000 R15: ffffffff8fb7be04
FS: 000000c020280890(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9e97dad988 CR3: 0000000026b6a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
unwind_next_frame+0x335/0x23a0 arch/x86/kernel/unwind_orc.c:494
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3798 [inline]
slab_alloc_node mm/slub.c:3845 [inline]
kmem_cache_alloc_node+0x177/0x340 mm/slub.c:3888
kmalloc_reserve+0x18b/0x2c0 net/core/skbuff.c:577
__alloc_skb+0x164/0x380 net/core/skbuff.c:668
alloc_skb_fclone include/linux/skbuff.h:1368 [inline]
tcp_stream_alloc_skb+0x34/0x570 net/ipv4/tcp.c:873
tcp_sendmsg_locked+0xedc/0x3480 net/ipv4/tcp.c:1155
tcp_sendmsg+0x2e/0x50 net/ipv4/tcp.c:1342
inet_sendmsg+0xb9/0x140 net/ipv4/af_inet.c:851
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
sock_write_iter+0x4b8/0x5c0 net/socket.c:1160
call_write_iter include/linux/fs.h:2108 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0x6db/0x1100 fs/read_write.c:590
ksys_write+0x1f8/0x260 fs/read_write.c:643
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: 0033:0x40720e
Code: 48 83 ec 38 e8 13 00 00 00 48 83 c4 38 5d c3 cc cc cc cc cc cc cc cc cc cc cc cc cc 49 89 f2 48 89 fa 48 89 ce 48 89 df 0f 05 <48> 3d 01 f0 ff ff 76 15 48 f7 d8 48 89 c1 48 c7 c0 ff ff ff ff 48
RSP: 002b:000000c000765120 EFLAGS: 00000216 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000040720e
RDX: 0000000000000009 RSI: 000000c0004a6200 RDI: 0000000000000003
RBP: 000000c000765160 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000216 R12: 000000c0007652a0
R13: 0000000000000002 R14: 000000c0000061a0 R15: 0000000000000003