INFO: task syz.3.19:5452 blocked for more than 143 seconds.
Not tainted 5.15.179-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.19 state:D
stack:27520 pid: 5452 ppid: 5000 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5029 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6375
schedule+0x11b/0x1f0 kernel/sched/core.c:6458
rwsem_down_write_slowpath+0xf0c/0x16a0 kernel/locking/rwsem.c:1165
filemap_invalidate_lock include/linux/fs.h:832 [inline]
blk_ioctl_zeroout block/ioctl.c:183 [inline]
blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
blkdev_ioctl+0x286/0x6b0 block/ioctl.c:598
block_ioctl+0xb1/0xf0 block/fops.c:493
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb98f8aad29
RSP: 002b:00007fb98eb23038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb98fa9afa0 RCX: 00007fb98f8aad29
RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000003
RBP: 00007fb98f926b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb98fa9afa0 R15: 00007ffd746347a8
INFO: task syz.4.20:5456 blocked for more than 144 seconds.
Not tainted 5.15.179-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.20 state:D stack:27520 pid: 5456 ppid: 4999 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5029 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6375
schedule+0x11b/0x1f0 kernel/sched/core.c:6458
rwsem_down_write_slowpath+0xf0c/0x16a0 kernel/locking/rwsem.c:1165
filemap_invalidate_lock include/linux/fs.h:832 [inline]
blk_ioctl_zeroout block/ioctl.c:183 [inline]
blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
blkdev_ioctl+0x286/0x6b0 block/ioctl.c:598
block_ioctl+0xb1/0xf0 block/fops.c:493
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb0932ffd29
RSP: 002b:00007fb092578038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb0934effa0 RCX: 00007fb0932ffd29
RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000003
RBP: 00007fb09337bb08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb0934effa0 R15: 00007ffd2dc14588
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1f4e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3925:
#0: ffff88814bfad098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by kworker/u4:4/4197:
3 locks held by kworker/0:10/4255:
#0: ffff88802be56938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000308fd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd8/0x16f0 net/ipv6/addrconf.c:4113
3 locks held by kworker/1:14/4968:
#0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90002fcfd20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74
3 locks held by kworker/1:15/4971:
#0: ffff88802be56938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000300fd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd8/0x16f0 net/ipv6/addrconf.c:4113
2 locks held by kworker/1:19/4978:
#0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000323fd20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
3 locks held by kworker/u4:6/5330:
#0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000347fd20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:251
1 lock held by syz.0.16/5441:
1 lock held by syz.3.19/5452:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.4.20/5456:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.5.21/5704:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.6.22/5719:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.9.25/5752:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.8.24/5754:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.7.23/5756:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.1.26/5781:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.2.27/5787:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.0.28/5831:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.3.29/5843:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.4.30/5845:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.5.31/5865:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.6.32/5877:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.9.33/5913:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.8.35/5954:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.7.34/5959:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.1.36/5971:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.2.37/5979:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.0.38/5986:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.3.39/6022:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.4.40/6044:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.5.41/6067:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.6.42/6089:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.9.43/6095:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.8.44/6119:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz.7.45/6139:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
3 locks held by syz-executor/6141:
#0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x956/0xef0 net/core/rtnetlink.c:5644
#1: ffff888053d153e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x229/0x410 drivers/net/wireguard/device.c:49
#2: ffffffff8cb23aa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#2: ffffffff8cb23aa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
1 lock held by syz-executor/6149:
#0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x956/0xef0 net/core/rtnetlink.c:5644
1 lock held by syz.1.46/6163:
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:832 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:183 [inline]
#0: ffff8880178a1538 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x1533/0x2080 block/ioctl.c:487
1 lock held by syz-executor/6169:
#0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x956/0xef0 net/core/rtnetlink.c:5644
1 lock held by syz-executor/6174:
#0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x956/0xef0 net/core/rtnetlink.c:5644
1 lock held by udevd/6177:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:369
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5441 Comm: syz.0.16 Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:check_preemption_disabled+0x19/0x110 lib/smp_processor_id.c:14
Code: cc 48 c7 c7 20 fa f9 8a 48 c7 c6 60 fa f9 8a eb 00 41 57 41 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 1d 28 02 c2 75 65 8b 05 91 5c c2 75 a9 ff ff ff 7f 74 22 65
RSP: 0018:ffffc9000349efe8 EFLAGS: 00000286
RAX: 2350c8b9fa133600 RBX: 0000000000000001 RCX: ffffffff81630798
RDX: 0000000000000000 RSI: ffffffff8af9fa60 RDI: ffffffff8af9fa20
RBP: ffffc9000349f168 R08: dffffc0000000000 R09: fffffbfff1c153f6
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000693e14
R13: ffffffff8401bfb5 R14: ffff88805fdca000 R15: dffffc0000000000
FS: 00007f477bcbc6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558a3e790518 CR3: 000000007ec7c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:331 [inline]
rcu_is_watching+0x11/0xa0 kernel/rcu/tree.c:1123
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0xb9/0x9a0 kernel/locking/lockdep.c:5634
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
percpu_ref_tryget_many include/linux/percpu-refcount.h:250 [inline]
percpu_ref_tryget include/linux/percpu-refcount.h:266 [inline]
blkg_tryget+0x164/0x230 include/linux/blk-cgroup.h:480
blkg_tryget_closest block/blk-cgroup.c:1834 [inline]
bio_associate_blkg_from_css+0x810/0x960 block/blk-cgroup.c:1866
__bio_clone_fast+0x2b5/0x4c0 block/bio.c:733
bio_clone_fast+0x42/0x170 block/bio.c:754
bio_split+0xa7/0x2d0 block/bio.c:1505
blk_bio_segment_split block/blk-merge.c:301 [inline]
__blk_queue_split+0x111d/0x1770 block/blk-merge.c:350
blk_mq_submit_bio+0x239/0x1c40 block/blk-mq.c:2218
__submit_bio+0x813/0x850 block/blk-core.c:917
__submit_bio_noacct_mq block/blk-core.c:997 [inline]
submit_bio_noacct+0xa44/0xb30 block/blk-core.c:1027
submit_bio+0x2dd/0x560 block/blk-core.c:1089
blk_next_bio block/blk-lib.c:19 [inline]
__blkdev_issue_zero_pages+0x155/0x3b0 block/blk-lib.c:319
blkdev_issue_zeroout+0x2c5/0x470 block/blk-lib.c:413
blk_ioctl_zeroout block/ioctl.c:188 [inline]
blkdev_common_ioctl+0x1ce5/0x2080 block/ioctl.c:487
blkdev_ioctl+0x286/0x6b0 block/ioctl.c:598
block_ioctl+0xb1/0xf0 block/fops.c:493
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f477ca43d29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f477bcbc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f477cc33fa0 RCX: 00007f477ca43d29
RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000003
RBP: 00007f477cabfb08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f477cc33fa0 R15: 00007ffe6a4faf48