====================================================== WARNING: possible circular locking dependency detected 4.19.88-syzkaller #0 Not tainted ------------------------------------------------------ syz-executor.2/24058 is trying to acquire lock: 0000000032e6bed0 (&mm->mmap_sem){++++}, at: __might_fault+0xfb/0x1e0 mm/memory.c:4637 but task is already holding lock: 00000000a3a66a65 (&rp->fetch_lock){+.+.}, at: mon_bin_get_event+0x3c/0x450 drivers/usb/mon/mon_bin.c:747 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&rp->fetch_lock){+.+.}: __mutex_lock_common kernel/locking/mutex.c:925 [inline] __mutex_lock+0xf7/0x1300 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 mon_bin_vma_fault+0x73/0x2d0 drivers/usb/mon/mon_bin.c:1237 __do_fault+0x111/0x480 mm/memory.c:3269 do_read_fault mm/memory.c:3681 [inline] do_fault mm/memory.c:3810 [inline] handle_pte_fault mm/memory.c:4041 [inline] __handle_mm_fault+0x2d78/0x3f80 mm/memory.c:4165 handle_mm_fault+0x1b5/0x690 mm/memory.c:4202 faultin_page mm/gup.c:530 [inline] __get_user_pages+0x609/0x1860 mm/gup.c:730 populate_vma_page_range+0x20d/0x2a0 mm/gup.c:1234 __mm_populate+0x204/0x380 mm/gup.c:1282 mm_populate include/linux/mm.h:2323 [inline] vm_mmap_pgoff+0x213/0x230 mm/util.c:362 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1586 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline] __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> #0 (&mm->mmap_sem){++++}: lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 __might_fault mm/memory.c:4638 [inline] __might_fault+0x15e/0x1e0 mm/memory.c:4623 _copy_to_user+0x30/0x120 lib/usercopy.c:25 copy_to_user include/linux/uaccess.h:155 [inline] mon_bin_get_event+0x117/0x450 drivers/usb/mon/mon_bin.c:756 mon_bin_ioctl+0xacf/0xc80 drivers/usb/mon/mon_bin.c:1068 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&rp->fetch_lock); lock(&mm->mmap_sem); lock(&rp->fetch_lock); lock(&mm->mmap_sem); *** DEADLOCK *** 1 lock held by syz-executor.2/24058: #0: 00000000a3a66a65 (&rp->fetch_lock){+.+.}, at: mon_bin_get_event+0x3c/0x450 drivers/usb/mon/mon_bin.c:747 stack backtrace: CPU: 0 PID: 24058 Comm: syz-executor.2 Not tainted 4.19.88-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1221 check_prev_add kernel/locking/lockdep.c:1861 [inline] check_prevs_add kernel/locking/lockdep.c:1974 [inline] validate_chain kernel/locking/lockdep.c:2415 [inline] __lock_acquire+0x2e19/0x49c0 kernel/locking/lockdep.c:3411 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3903 __might_fault mm/memory.c:4638 [inline] __might_fault+0x15e/0x1e0 mm/memory.c:4623 _copy_to_user+0x30/0x120 lib/usercopy.c:25 copy_to_user include/linux/uaccess.h:155 [inline] mon_bin_get_event+0x117/0x450 drivers/usb/mon/mon_bin.c:756 mon_bin_ioctl+0xacf/0xc80 drivers/usb/mon/mon_bin.c:1068 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a6f9 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fe9c4dc2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a6f9 RDX: 0000000020000240 RSI: 0000000040189206 RDI: 0000000000000003 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe9c4dc36d4 R13: 00000000004c43d0 R14: 00000000004d9a58 R15: 00000000ffffffff kobject: 'loop3' (00000000829fb9f8): kobject_uevent_env kobject: 'loop3' (00000000829fb9f8): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000eee30591): kobject_uevent_env kobject: 'kvm' (00000000eee30591): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000eee30591): kobject_uevent_env kobject: 'kvm' (00000000eee30591): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'bonding_slave' (00000000600ee733): kobject_cleanup, parent 000000000aed28d3 kobject: 'bonding_slave' (00000000600ee733): does not have a release() function, it is broken and must be fixed. kobject: 'loop5' (000000005b1f884a): kobject_uevent_env kobject: 'loop5' (000000005b1f884a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'bonding_slave' (00000000600ee733): auto cleanup kobject_del kobject: 'bonding_slave': free name kobject: 'loop0' (000000003f440f54): kobject_uevent_env kobject: 'loop0' (000000003f440f54): fill_kobj_path: path = '/devices/virtual/block/loop0' kauditd_printk_skb: 156 callbacks suppressed audit: type=1400 audit(1575652284.516:14918): avc: denied { map } for pid=24075 comm="blkid" path="/sbin/blkid" dev="sda1" ino=16128 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'kvm' (00000000eee30591): kobject_uevent_env audit: type=1400 audit(1575652284.556:14919): avc: denied { map } for pid=24075 comm="blkid" path="/sbin/blkid" dev="sda1" ino=16128 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'kvm' (00000000eee30591): fill_kobj_path: path = '/devices/virtual/misc/kvm' bond0: Releasing backup interface bond_slave_1 kobject: 'kvm' (00000000eee30591): kobject_uevent_env kobject: 'kvm' (00000000eee30591): fill_kobj_path: path = '/devices/virtual/misc/kvm' audit: type=1400 audit(1575652284.566:14920): avc: denied { map } for pid=24075 comm="blkid" path="/lib/x86_64-linux-gnu/ld-2.13.so" dev="sda1" ino=2668 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop3' (00000000829fb9f8): kobject_uevent_env kobject: 'loop3' (00000000829fb9f8): fill_kobj_path: path = '/devices/virtual/block/loop3' audit: type=1400 audit(1575652284.566:14921): avc: denied { map } for pid=24075 comm="blkid" path="/lib/x86_64-linux-gnu/ld-2.13.so" dev="sda1" ino=2668 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1575652284.586:14922): avc: denied { map } for pid=24075 comm="blkid" path="/etc/ld.so.cache" dev="sda1" ino=2251 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1575652284.606:14923): avc: denied { map } for pid=24075 comm="blkid" path="/lib/x86_64-linux-gnu/libblkid.so.1.1.0" dev="sda1" ino=2825 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1575652284.616:14924): avc: denied { map } for pid=24075 comm="blkid" path="/lib/x86_64-linux-gnu/libblkid.so.1.1.0" dev="sda1" ino=2825 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop1' (000000005b7b7610): kobject_uevent_env kobject: 'loop1' (000000005b7b7610): fill_kobj_path: path = '/devices/virtual/block/loop1' audit: type=1400 audit(1575652284.626:14925): avc: denied { map } for pid=24075 comm="blkid" path="/lib/x86_64-linux-gnu/libc-2.13.so" dev="sda1" ino=2784 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop5' (000000005b1f884a): kobject_uevent_env kobject: 'loop5' (000000005b1f884a): fill_kobj_path: path = '/devices/virtual/block/loop5' audit: type=1400 audit(1575652284.626:14926): avc: denied { map } for pid=24075 comm="blkid" path="/lib/x86_64-linux-gnu/libc-2.13.so" dev="sda1" ino=2784 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop3' (00000000829fb9f8): kobject_uevent_env kobject: 'loop3' (00000000829fb9f8): fill_kobj_path: path = '/devices/virtual/block/loop3' audit: type=1400 audit(1575652284.626:14927): avc: denied { map } for pid=24080 comm="blkid" path="/sbin/blkid" dev="sda1" ino=16128 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop0' (000000003f440f54): kobject_uevent_env kobject: 'loop0' (000000003f440f54): fill_kobj_path: path = '/devices/virtual/block/loop0' net_ratelimit: 18 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. kobject: 'loop4' (000000008a55e14a): kobject_uevent_env overlayfs: filesystem on './file0' not supported as upperdir kobject: 'loop4' (000000008a55e14a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000005b1f884a): kobject_uevent_env kobject: 'loop5' (000000005b1f884a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000829fb9f8): kobject_uevent_env kobject: 'bonding_slave' (000000009e4b2b5e): kobject_add_internal: parent: 'bond_slave_1', set: '' kobject: 'loop3' (00000000829fb9f8): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (000000005b7b7610): kobject_uevent_env bond0: Enslaving bond_slave_1 as an active interface with an up link kobject: 'loop1' (000000005b7b7610): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (000000003f440f54): kobject_uevent_env kobject: 'loop0' (000000003f440f54): fill_kobj_path: path = '/devices/virtual/block/loop0' overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop4' (000000008a55e14a): kobject_uevent_env kobject: 'loop4' (000000008a55e14a): fill_kobj_path: path = '/devices/virtual/block/loop4' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. kobject: 'loop3' (00000000829fb9f8): kobject_uevent_env kobject: 'loop3' (00000000829fb9f8): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000003f440f54): kobject_uevent_env kobject: 'loop0' (000000003f440f54): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000005b1f884a): kobject_uevent_env kobject: 'loop5' (000000005b1f884a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000005b7b7610): kobject_uevent_env kobject: 'loop1' (000000005b7b7610): fill_kobj_path: path = '/devices/virtual/block/loop1' overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. kobject: 'loop0' (000000003f440f54): kobject_uevent_env kobject: 'loop0' (000000003f440f54): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (000000008a55e14a): kobject_uevent_env overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. kobject: 'loop4' (000000008a55e14a): fill_kobj_path: path = '/devices/virtual/block/loop4' overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. kobject: 'loop3' (00000000829fb9f8): kobject_uevent_env kobject: 'loop3' (00000000829fb9f8): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (000000003f440f54): kobject_uevent_env kobject: 'loop0' (000000003f440f54): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000005b7b7610): kobject_uevent_env kobject: 'loop1' (000000005b7b7610): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000005b1f884a): kobject_uevent_env kobject: 'loop5' (000000005b1f884a): fill_kobj_path: path = '/devices/virtual/block/loop5' overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. kobject: 'loop4' (000000008a55e14a): kobject_uevent_env kobject: 'loop4' (000000008a55e14a): fill_kobj_path: path = '/devices/virtual/block/loop4' kauditd_printk_skb: 289 callbacks suppressed audit: type=1400 audit(1575652289.536:15217): avc: denied { map } for pid=24194 comm="blkid" path="/lib/x86_64-linux-gnu/libblkid.so.1.1.0" dev="sda1" ino=2825 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. kobject: 'loop3' (00000000829fb9f8): kobject_uevent_env overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. kobject: 'loop3' (00000000829fb9f8): fill_kobj_path: path = '/devices/virtual/block/loop3' audit: type=1400 audit(1575652289.616:15218): avc: denied { map } for pid=24194 comm="blkid" path="/lib/x86_64-linux-gnu/libblkid.so.1.1.0" dev="sda1" ino=2825 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop0' (000000003f440f54): kobject_uevent_env kobject: 'loop0' (000000003f440f54): fill_kobj_path: path = '/devices/virtual/block/loop0' audit: type=1400 audit(1575652289.626:15219): avc: denied { map } for pid=24195 comm="blkid" path="/lib/x86_64-linux-gnu/libblkid.so.1.1.0" dev="sda1" ino=2825 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1575652289.626:15220): avc: denied { map } for pid=24195 comm="blkid" path="/lib/x86_64-linux-gnu/libc-2.13.so" dev="sda1" ino=2784 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 audit: type=1400 audit(1575652289.626:15221): avc: denied { map } for pid=24195 comm="blkid" path="/lib/x86_64-linux-gnu/libc-2.13.so" dev="sda1" ino=2784 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop5' (000000005b1f884a): kobject_uevent_env kobject: 'loop5' (000000005b1f884a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop4' (000000008a55e14a): kobject_uevent_env audit: type=1400 audit(1575652289.646:15222): avc: denied { map } for pid=24194 comm="blkid" path="/lib/x86_64-linux-gnu/libc-2.13.so" dev="sda1" ino=2784 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop4' (000000008a55e14a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop1' (000000005b7b7610): kobject_uevent_env audit: type=1400 audit(1575652289.646:15223): avc: denied { map } for pid=24194 comm="blkid" path="/lib/x86_64-linux-gnu/libc-2.13.so" dev="sda1" ino=2784 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop1' (000000005b7b7610): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop3' (00000000829fb9f8): kobject_uevent_env audit: type=1400 audit(1575652289.676:15224): avc: denied { map } for pid=24195 comm="blkid" path="/lib/x86_64-linux-gnu/libuuid.so.1.3.0" dev="sda1" ino=2819 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop3' (00000000829fb9f8): fill_kobj_path: path = '/devices/virtual/block/loop3' overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off. audit: type=1400 audit(1575652289.676:15225): avc: denied { map } for pid=24194 comm="blkid" path="/lib/x86_64-linux-gnu/libuuid.so.1.3.0" dev="sda1" ino=2819 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'slcan0' (0000000019327227): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop5' (000000005b1f884a): kobject_uevent_env audit: type=1400 audit(1575652289.676:15226): avc: denied { map } for pid=24194 comm="blkid" path="/lib/x86_64-linux-gnu/libuuid.so.1.3.0" dev="sda1" ino=2819 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 kobject: 'loop5' (000000005b1f884a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'slcan0' (0000000019327227): kobject_uevent_env kobject: 'slcan0' (0000000019327227): fill_kobj_path: path = '/devices/virtual/net/slcan0' kobject: 'queues' (00000000b43e8a16): kobject_add_internal: parent: 'slcan0', set: '' kobject: 'queues' (00000000b43e8a16): kobject_uevent_env kobject: 'queues' (00000000b43e8a16): kobject_uevent_env: filter function caused the event to drop! net_ratelimit: 19 callbacks suppressed protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'loop0' (000000003f440f54): kobject_uevent_env kobject: 'loop0' (000000003f440f54): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'rx-0' (00000000f3ec59aa): kobject_add_internal: parent: 'queues', set: 'queues' protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_1 kobject: 'rx-0' (00000000f3ec59aa): kobject_uevent_env kobject: 'rx-0' (00000000f3ec59aa): fill_kobj_path: path = '/devices/virtual/net/slcan0/queues/rx-0' kobject: 'tx-0' (00000000efbd4072): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000efbd4072): kobject_uevent_env kobject: 'tx-0' (00000000efbd4072): fill_kobj_path: path = '/devices/virtual/net/slcan0/queues/tx-0' kobject: 'loop4' (000000008a55e14a): kobject_uevent_env kobject: 'loop4' (000000008a55e14a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'rx-0' (00000000f3ec59aa): kobject_cleanup, parent 00000000b43e8a16 kobject: 'rx-0' (00000000f3ec59aa): auto cleanup 'remove' event kobject: 'rx-0' (00000000f3ec59aa): kobject_uevent_env kobject: 'rx-0' (00000000f3ec59aa): fill_kobj_path: path = '/devices/virtual/net/slcan0/queues/rx-0' kobject: 'loop1' (000000005b7b7610): kobject_uevent_env kobject: 'rx-0' (00000000f3ec59aa): auto cleanup kobject_del kobject: 'loop1' (000000005b7b7610): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'rx-0' (00000000f3ec59aa): calling ktype release kobject: 'rx-0': free name kobject: 'tx-0' (00000000efbd4072): kobject_cleanup, parent 00000000b43e8a16 kobject: 'tx-0' (00000000efbd4072): auto cleanup 'remove' event kobject: 'tx-0' (00000000efbd4072): kobject_uevent_env kobject: 'tx-0' (00000000efbd4072): fill_kobj_path: path = '/devices/virtual/net/slcan0/queues/tx-0' kobject: 'tx-0' (00000000efbd4072): auto cleanup kobject_del kobject: 'tx-0' (00000000efbd4072): calling ktype release protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_1 protocol 88fb is buggy, dev hsr_slave_0 kobject: 'tx-0': free name kobject: 'queues' (00000000b43e8a16): kobject_cleanup, parent (null) kobject: 'queues' (00000000b43e8a16): calling ktype release kobject: 'queues' (00000000b43e8a16): kset_release kobject: 'queues': free name kobject: 'loop0' (000000003f440f54): kobject_uevent_env kobject: 'loop0' (000000003f440f54): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'slcan0' (0000000019327227): kobject_uevent_env kobject: 'slcan0' (0000000019327227): fill_kobj_path: path = '/devices/virtual/net/slcan0' kobject: 'loop5' (000000005b1f884a): kobject_uevent_env kobject: 'loop5' (000000005b1f884a): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'slcan0' (0000000019327227): kobject_cleanup, parent (null) kobject: 'slcan0' (0000000019327227): calling ktype release kobject: 'slcan0': free name kobject: 'slcan0' (0000000046096c8b): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'slcan0' (0000000046096c8b): kobject_uevent_env kobject: 'loop4' (000000008a55e14a): kobject_uevent_env kobject: 'slcan0' (0000000046096c8b): fill_kobj_path: path = '/devices/virtual/net/slcan0' kobject: 'loop4' (000000008a55e14a): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'queues' (000000006048c3bd): kobject_add_internal: parent: 'slcan0', set: '' kobject: 'queues' (000000006048c3bd): kobject_uevent_env kobject: 'queues' (000000006048c3bd): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (00000000f6a519f8): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (00000000f6a519f8): kobject_uevent_env kobject: 'rx-0' (00000000f6a519f8): fill_kobj_path: path = '/devices/virtual/net/slcan0/queues/rx-0' kobject: 'tx-0' (000000002c25282c): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (000000002c25282c): kobject_uevent_env kobject: 'tx-0' (000000002c25282c): fill_kobj_path: path = '/devices/virtual/net/slcan0/queues/tx-0' kobject: 'rx-0' (00000000f6a519f8): kobject_cleanup, parent 000000006048c3bd kobject: 'rx-0' (00000000f6a519f8): auto cleanup 'remove' event kobject: 'rx-0' (00000000f6a519f8): kobject_uevent_env kobject: 'rx-0' (00000000f6a519f8): fill_kobj_path: path = '/devices/virtual/net/slcan0/queues/rx-0' kobject: 'rx-0' (00000000f6a519f8): auto cleanup kobject_del kobject: 'loop1' (000000005b7b7610): kobject_uevent_env