INFO: task syz.4.289:8059 blocked for more than 143 seconds.
Tainted: G W 6.17.0-rc1-syzkaller-00224-g8d561baae505 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.289 state:D stack:24648 pid:8059 tgid:8058 ppid:5833 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x16f3/0x4c20 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
rt_mutex_schedule+0x77/0xf0 kernel/sched/core.c:7339
rt_mutex_slowlock_block kernel/locking/rtmutex.c:1647 [inline]
__rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline]
__rt_mutex_slowlock_locked+0x1e04/0x25e0 kernel/locking/rtmutex.c:1760
rt_mutex_slowlock+0xb5/0x160 kernel/locking/rtmutex.c:1800
__rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline]
rwbase_write_lock+0x14f/0x750 kernel/locking/rwbase_rt.c:244
inode_lock include/linux/fs.h:869 [inline]
open_last_lookups fs/namei.c:3804 [inline]
path_openat+0x8e6/0x3840 fs/namei.c:4043
do_filp_open+0x1fa/0x410 fs/namei.c:4073
do_sys_openat2+0x121/0x1c0 fs/open.c:1435
do_sys_open fs/open.c:1450 [inline]
__do_sys_openat fs/open.c:1466 [inline]
__se_sys_openat fs/open.c:1461 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1461
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3aa95aebe9
RSP: 002b:00007f3aa780e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3aa97d5fa0 RCX: 00007f3aa95aebe9
RDX: 00000000000c4042 RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007f3aa9631e19 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000001ff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3aa97d6038 R14: 00007f3aa97d5fa0 R15: 00007ffcec0de208
INFO: task syz.4.289:8069 blocked for more than 143 seconds.
Tainted: G W 6.17.0-rc1-syzkaller-00224-g8d561baae505 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.289 state:D stack:25488 pid:8069 tgid:8058 ppid:5833 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x16f3/0x4c20 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
io_schedule+0x81/0xe0 kernel/sched/core.c:7903
folio_wait_bit_common+0x6b5/0xb90 mm/filemap.c:1317
folio_lock include/linux/pagemap.h:1133 [inline]
release_metapage+0x103/0xab0 fs/jfs/jfs_metapage.c:870
discard_metapage fs/jfs/jfs_metapage.h:88 [inline]
__get_metapage+0x9a0/0xde0 fs/jfs/jfs_metapage.c:753
dtSplitPage+0x7f8/0x3b20 fs/jfs/jfs_dtree.c:1471
dtSplitUp fs/jfs/jfs_dtree.c:1092 [inline]
dtInsert+0x109b/0x5f40 fs/jfs/jfs_dtree.c:871
jfs_create+0x6c8/0xa80 fs/jfs/namei.c:137
lookup_open fs/namei.c:3708 [inline]
open_last_lookups fs/namei.c:3807 [inline]
path_openat+0x14fd/0x3840 fs/namei.c:4043
do_filp_open+0x1fa/0x410 fs/namei.c:4073
do_sys_openat2+0x121/0x1c0 fs/open.c:1435
do_sys_open fs/open.c:1450 [inline]
__do_sys_openat fs/open.c:1466 [inline]
__se_sys_openat fs/open.c:1461 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1461
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3aa95aebe9
RSP: 002b:00007f3aa763b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3aa97d6180 RCX: 00007f3aa95aebe9
RDX: 000000000000275a RSI: 0000200000000280 RDI: ffffffffffffff9c
RBP: 00007f3aa9631e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3aa97d6218 R14: 00007f3aa97d6180 R15: 00007ffcec0de208
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 39 Comm: khungtaskd Tainted: G W 6.17.0-rc1-syzkaller-00224-g8d561baae505 #0 PREEMPT_{RT,(full)}
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:328 [inline]
watchdog+0xf93/0xfe0 kernel/hung_task.c:491
kthread+0x711/0x8a0 kernel/kthread.c:463
ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 10383 Comm: syz-executor Tainted: G W 6.17.0-rc1-syzkaller-00224-g8d561baae505 #0 PREEMPT_{RT,(full)}
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:should_failslab+0xd/0x100 mm/failslab.c:20
Code: ff cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 41 57 41 56 41 54 53 89 f3 <49> 89 fe 49 bc 00 00 00 00 00 fc ff df 48 c7 c0 08 33 06 99 48 c1
RSP: 0018:ffffc90003f9e9c8 EFLAGS: 00000246
RAX: 0000000000400140 RBX: 00000000000928c0 RCX: dffffc0000000000
RDX: 00000000ffffffff RSI: 00000000000928c0 RDI: ffff888019842000
RBP: 00000000000928c0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10083b106d R12: ffff888019842000
R13: 00000000000928c0 R14: 0000000000000800 R15: 0000000000000000
FS: 00005555761a1500(0000) GS:ffff8881268c5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa658d72000 CR3: 000000003c78c000 CR4: 00000000003526f0
Call Trace:
slab_pre_alloc_hook mm/slub.c:4133 [inline]
slab_alloc_node mm/slub.c:4209 [inline]
__do_kmalloc_node mm/slub.c:4364 [inline]
__kmalloc_node_track_caller_noprof+0xd0/0x450 mm/slub.c:4384
kmalloc_reserve+0x136/0x290 net/core/skbuff.c:600
pskb_expand_head+0x18e/0x1150 net/core/skbuff.c:2240
netlink_trim+0x1d5/0x2e0 net/netlink/af_netlink.c:1301
netlink_broadcast_filtered+0xd6/0x12c0 net/netlink/af_netlink.c:1514
nlmsg_multicast_filtered include/net/netlink.h:1165 [inline]
nlmsg_multicast include/net/netlink.h:1184 [inline]
nlmsg_notify+0xf0/0x1a0 net/netlink/af_netlink.c:2595
rtnl_notify net/core/rtnetlink.c:958 [inline]
rtmsg_ifinfo_send net/core/rtnetlink.c:4421 [inline]
rtmsg_ifinfo_event net/core/rtnetlink.c:4437 [inline]
rtnetlink_event+0x224/0x270 net/core/rtnetlink.c:7006
notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
__netdev_upper_dev_link+0x3c3/0x590 net/core/dev.c:8667
netdev_upper_dev_link+0x9d/0xf0 net/core/dev.c:8708
hsr_portdev_setup net/hsr/hsr_slave.c:156 [inline]
hsr_add_port+0x5e2/0x890 net/hsr/hsr_slave.c:202
hsr_dev_finalize+0x6d4/0xab0 net/hsr/hsr_device.c:761
hsr_newlink+0x7d7/0x940 net/hsr/hsr_netlink.c:122
rtnl_newlink_create+0x30d/0xb00 net/core/rtnetlink.c:3825
__rtnl_newlink net/core/rtnetlink.c:3942 [inline]
rtnl_newlink+0x16d6/0x1c70 net/core/rtnetlink.c:4057
rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6946
netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x846/0xa10 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
sock_sendmsg_nosec net/socket.c:714 [inline]
__sock_sendmsg+0x219/0x270 net/socket.c:729
__sys_sendto+0x3c7/0x520 net/socket.c:2228
__do_sys_sendto net/socket.c:2235 [inline]
__se_sys_sendto net/socket.c:2231 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2231
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f777d0f0a7c
Code: 2a 5f 02 00 44 8b 4c 24 2c 4c 8b 44 24 20 89 c5 44 8b 54 24 28 48 8b 54 24 18 b8 2c 00 00 00 48 8b 74 24 10 8b 7c 24 08 0f 05 <48> 3d 00 f0 ff ff 77 34 89 ef 48 89 44 24 08 e8 70 5f 02 00 48 8b
RSP: 002b:00007ffff8ae06d0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f777de44620 RCX: 00007f777d0f0a7c
RDX: 0000000000000048 RSI: 00007f777de44670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffff8ae0724 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f777de44670 R15: 0000000000000000