INFO: task syz-executor.2:9352 blocked for more than 143 seconds. Not tainted 6.7.0-rc2-next-20231124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.2 state:D stack:28704 pid:9352 tgid:9346 ppid:5107 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5399 [inline] __schedule+0xf15/0x5c00 kernel/sched/core.c:6726 __schedule_loop kernel/sched/core.c:6801 [inline] schedule+0xe7/0x270 kernel/sched/core.c:6816 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6873 rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline] __down_write_common+0x94c/0x13f0 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:847 [inline] blk_ioctl_zeroout block/ioctl.c:184 [inline] blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 blkdev_ioctl+0x249/0x770 block/ioctl.c:627 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7f82fe27cae9 RSP: 002b:00007f82fef140c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f82fe39c120 RCX: 00007f82fe27cae9 RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000003 RBP: 00007f82fe2c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f82fe39c120 R15: 00007ffff81199f8 INFO: task syz-executor.5:9353 blocked for more than 143 seconds. Not tainted 6.7.0-rc2-next-20231124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.5 state:D stack:27744 pid:9353 tgid:9349 ppid:5099 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5399 [inline] __schedule+0xf15/0x5c00 kernel/sched/core.c:6726 __schedule_loop kernel/sched/core.c:6801 [inline] schedule+0xe7/0x270 kernel/sched/core.c:6816 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6873 rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline] __down_write_common+0x94c/0x13f0 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:847 [inline] blk_ioctl_zeroout block/ioctl.c:184 [inline] blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 blkdev_ioctl+0x249/0x770 block/ioctl.c:627 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7f481447cae9 RSP: 002b:00007f481523a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f481459c120 RCX: 00007f481447cae9 RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000004 RBP: 00007f48144c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f481459c120 R15: 00007ffe1e45c0a8 INFO: task syz-executor.0:9359 blocked for more than 144 seconds. Not tainted 6.7.0-rc2-next-20231124-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.0 state:D stack:28464 pid:9359 tgid:9354 ppid:5414 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5399 [inline] __schedule+0xf15/0x5c00 kernel/sched/core.c:6726 __schedule_loop kernel/sched/core.c:6801 [inline] schedule+0xe7/0x270 kernel/sched/core.c:6816 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6873 rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline] __down_write_common+0x94c/0x13f0 kernel/locking/rwsem.c:1306 filemap_invalidate_lock include/linux/fs.h:847 [inline] blk_ioctl_zeroout block/ioctl.c:184 [inline] blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 blkdev_ioctl+0x249/0x770 block/ioctl.c:627 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x62/0x6a RIP: 0033:0x7fe65847cae9 RSP: 002b:00007fe6592160c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe65859c050 RCX: 00007fe65847cae9 RDX: 0000000020000080 RSI: 000000000000127f RDI: 0000000000000004 RBP: 00007fe6584c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fe65859c050 R15: 00007ffdde0753b8 Showing all locks held in the system: 1 lock held by khungtaskd/29: #0: ffffffff8cfacf60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline] #0: ffffffff8cfacf60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline] #0: ffffffff8cfacf60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613 1 lock held by hwrng/754: #0: ffffffff8dbb3b68 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0x145/0x430 drivers/char/hw_random/core.c:504 2 locks held by getty/4816: #0: ffff888026f360a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc4/0x1490 drivers/tty/n_tty.c:2201 2 locks held by kworker/u4:20/5990: 2 locks held by kworker/0:0/17035: #0: ffff888013076938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78c/0x15f0 kernel/workqueue.c:2608 #1: ffffc9000409fd80 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7f6/0x15f0 kernel/workqueue.c:2609 1 lock held by syz-executor.4/9335: 2 locks held by syz-executor.4/9336: 1 lock held by syz-executor.2/9352: #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 1 lock held by syz-executor.5/9353: #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 1 lock held by syz-executor.0/9359: #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 1 lock held by syz-executor.3/9392: #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 1 lock held by syz-executor.0/9490: #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 1 lock held by syz-executor.5/9502: #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 1 lock held by syz-executor.2/9499: #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 1 lock held by syz-executor.3/9524: #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 1 lock held by syz-executor.1/9543: #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:847 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blk_ioctl_zeroout block/ioctl.c:184 [inline] #0: ffff888148cc59c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_common_ioctl+0x10ee/0x1ce0 block/ioctl.c:513 1 lock held by syz-executor.2/9551: #0: ffffffff8eaac4e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8eaac4e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe00 net/core/rtnetlink.c:6555 1 lock held by syz-executor.0/9557: #0: ffffffff8eaac4e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8eaac4e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe00 net/core/rtnetlink.c:6555 2 locks held by syz-executor.5/9560: #0: ffffffff8eaac4e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8eaac4e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe00 net/core/rtnetlink.c:6555 #1: ffffffff8cfb8938 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline] #1: ffffffff8cfb8938 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x6b1/0x800 kernel/rcu/tree_exp.h:996 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.7.0-rc2-next-20231124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x299/0x300 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:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 23179 Comm: kworker/u4:7 Not tainted 6.7.0-rc2-next-20231124-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:unwind_next_frame+0x46/0x2390 arch/x86/kernel/unwind_orc.c:475 Code: da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 03 0d 00 00 8b 2b 31 ff 89 ee e8 1a d7 4d 00 <85> ed 75 18 31 db e8 9f db 4d 00 89 d8 48 83 c4 40 5b 5d 41 5c 41 RSP: 0018:ffffc9001581f520 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffffc9001581f5a0 RCX: ffffffff813a3666 RDX: ffff88804b00d940 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000003 R12: ffffc9001581f5a0 R13: ffffffff81756c60 R14: ffffc9001581f660 R15: ffff88804b00d940 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c00d8380f8 CR3: 000000005275a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0xfa/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x50 mm/kasan/common.c:46 kasan_set_track+0x24/0x30 mm/kasan/common.c:53 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:547 ____kasan_slab_free mm/kasan/common.c:238 [inline] ____kasan_slab_free+0x15b/0x1b0 mm/kasan/common.c:202 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1809 [inline] slab_free_freelist_hook+0x114/0x1e0 mm/slub.c:1835 slab_free mm/slub.c:3784 [inline] __kmem_cache_free+0xc0/0x180 mm/slub.c:3797 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1578 [inline] ieee80211_ibss_rx_queued_mgmt+0x1b17/0x3140 net/mac80211/ibss.c:1604 ieee80211_iface_process_skb net/mac80211/iface.c:1589 [inline] ieee80211_iface_work+0xa67/0xda0 net/mac80211/iface.c:1643 cfg80211_wiphy_work+0x24e/0x330 net/wireless/core.c:435 process_one_work+0x8a4/0x15f0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b6/0x1290 kernel/workqueue.c:2787 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242