https://bugzilla.kernel.org/show_bug.cgi?id=201269 Bug ID: 201269 Summary: sysfs_remove_group warning in kbnepd Product: Drivers Version: 2.5 Kernel Version: 4.9.129 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Bluetooth Assignee: linux-bluetooth@xxxxxxxxxxxxxxx Reporter: kai.ruhnau@xxxxxxxx Regression: No I've just gotten a warning in the kernel logs (see below). I was using Bluez 5.43 and a manual busctl call to start a NAP Bluetooth-tethering session to an iPhone, but the iPhone hadn't turned on tethering. The busctl returned successfully and I had the bnep0 network interface for a brief moment before the connection was closed again. I tried to reproduce a couple of times without success. [ 4136.114230] ------------[ cut here ]------------ [ 4136.114260] WARNING: CPU: 0 PID: 427 at fs/sysfs/group.c:237 sysfs_remove_group+0x90/0x9c [ 4136.114265] sysfs group 'byte_queue_limits' not found for kobject 'tx-0' [ 4136.114271] Modules linked in: [ 4136.114284] CPU: 0 PID: 427 Comm: kbnepd bnep0 Not tainted 4.9.129-00093-g98220ccd50ff #180 [ 4136.114288] Hardware name: Freescale i.MX6 SoloX (Device Tree) [ 4136.114292] Backtrace: [ 4136.114315] [<c010bbc4>] (dump_backtrace) from [<c010be70>] (show_stack+0x18/0x1c) [ 4136.114324] r7:00000009 r6:60070013 r5:00000000 r4:c0e1c230 [ 4136.114338] [<c010be58>] (show_stack) from [<c03d9ce8>] (dump_stack+0x94/0xb0) [ 4136.114355] [<c03d9c54>] (dump_stack) from [<c012359c>] (__warn+0xd8/0x104) [ 4136.114362] r7:00000009 r6:c0bfe9f8 r5:00000000 r4:ee747da8 [ 4136.114374] [<c01234c4>] (__warn) from [<c0123604>] (warn_slowpath_fmt+0x3c/0x44) [ 4136.114383] r9:00000000 r8:00000000 r7:ee416000 r6:eebc540c r5:c0e605ec r4:c0bfea34 [ 4136.114396] [<c01235cc>] (warn_slowpath_fmt) from [<c027647c>] (sysfs_remove_group+0x90/0x9c) [ 4136.114401] r3:c0c8290c r2:c0bfea34 [ 4136.114405] r4:00000000 [ 4136.114419] [<c02763ec>] (sysfs_remove_group) from [<c0788324>] (netdev_queue_update_kobjects+0xb4/0x15c) [ 4136.114425] r6:c0e605ec r5:eebc540c r4:00000000 [ 4136.114435] [<c0788270>] (netdev_queue_update_kobjects) from [<c0788408>] (netdev_unregister_kobject+0x3c/0x60) [ 4136.114444] r10:00001ac4 r9:ffffffff r8:00000006 r7:024000c0 r6:eeb703c0 r5:00000001 [ 4136.114448] r4:ee416000 [ 4136.114464] [<c07883cc>] (netdev_unregister_kobject) from [<c0764858>] (rollback_registered_many+0x240/0x3b0) [ 4136.114470] r5:ee747e98 r4:ee416000 [ 4136.114483] [<c0764618>] (rollback_registered_many) from [<c0767674>] (unregister_netdevice_queue+0x78/0xe8) [ 4136.114492] r10:eea53684 r9:ee4164c0 r8:00000002 r7:00000145 r6:00000009 r5:00000000 [ 4136.114495] r4:ee416000 [ 4136.114504] [<c07675fc>] (unregister_netdevice_queue) from [<c0767704>] (unregister_netdev+0x20/0x28) [ 4136.114509] r5:00000000 r4:ee416000 [ 4136.114521] [<c07676e4>] (unregister_netdev) from [<c0891360>] (bnep_session+0x4cc/0x880) [ 4136.114525] r5:00000000 r4:ee416000 [ 4136.114538] [<c0890e94>] (bnep_session) from [<c0141474>] (kthread+0xf0/0x110) [ 4136.114547] r10:00000000 r9:00000000 r8:c0890e94 r7:ee4164c0 r6:ee746000 r5:ee6fea80 [ 4136.114550] r4:00000000 [ 4136.114562] [<c0141384>] (kthread) from [<c0107b70>] (ret_from_fork+0x14/0x24) [ 4136.114570] r8:00000000 r7:00000000 r6:00000000 r5:c0141384 r4:ee6fea80 [ 4136.114574] ---[ end trace 79b76e2cb188c011 ]--- [ 4136.114629] ------------[ cut here ]------------ [ 4136.114646] WARNING: CPU: 0 PID: 427 at fs/sysfs/group.c:237 sysfs_remove_group+0x90/0x9c [ 4136.114650] sysfs group 'power' not found for kobject 'bnep0' [ 4136.114653] Modules linked in: [ 4136.114664] CPU: 0 PID: 427 Comm: kbnepd bnep0 Tainted: G W 4.9.129-00093-g98220ccd50ff #180 [ 4136.114668] Hardware name: Freescale i.MX6 SoloX (Device Tree) [ 4136.114670] Backtrace: [ 4136.114686] [<c010bbc4>] (dump_backtrace) from [<c010be70>] (show_stack+0x18/0x1c) [ 4136.114694] r7:00000009 r6:60070013 r5:00000000 r4:c0e1c230 [ 4136.114704] [<c010be58>] (show_stack) from [<c03d9ce8>] (dump_stack+0x94/0xb0) [ 4136.114717] [<c03d9c54>] (dump_stack) from [<c012359c>] (__warn+0xd8/0x104) [ 4136.114724] r7:00000009 r6:c0bfe9f8 r5:00000000 r4:ee747d90 [ 4136.114734] [<c01234c4>] (__warn) from [<c0123604>] (warn_slowpath_fmt+0x3c/0x44) [ 4136.114743] r9:ffffffff r8:00000006 r7:eeb9a198 r6:ee4162b0 r5:c0e303f0 r4:c0bfea34 [ 4136.114755] [<c01235cc>] (warn_slowpath_fmt) from [<c027647c>] (sysfs_remove_group+0x90/0x9c) [ 4136.114760] r3:c0a51798 r2:c0bfea34 [ 4136.114764] r4:00000000 [ 4136.114782] [<c02763ec>] (sysfs_remove_group) from [<c05002b0>] (dpm_sysfs_remove+0x50/0x58) [ 4136.114788] r6:ee4162a8 r5:c0e303f0 r4:ee4162b0 [ 4136.114801] [<c0500260>] (dpm_sysfs_remove) from [<c04f41c4>] (device_del+0x40/0x224) [ 4136.114808] r7:eeb9a198 r6:eeb703c0 r5:ee4162a8 r4:ee416000 [ 4136.114818] [<c04f4184>] (device_del) from [<c0788428>] (netdev_unregister_kobject+0x5c/0x60) [ 4136.114826] r8:00000006 r7:024000c0 r6:eeb703c0 r5:ee4162a8 r4:ee416000 [ 4136.114840] [<c07883cc>] (netdev_unregister_kobject) from [<c0764858>] (rollback_registered_many+0x240/0x3b0) [ 4136.114845] r5:ee747e98 r4:ee416000 [ 4136.114856] [<c0764618>] (rollback_registered_many) from [<c0767674>] (unregister_netdevice_queue+0x78/0xe8) [ 4136.114865] r10:eea53684 r9:ee4164c0 r8:00000002 r7:00000145 r6:00000009 r5:00000000 [ 4136.114868] r4:ee416000 [ 4136.114877] [<c07675fc>] (unregister_netdevice_queue) from [<c0767704>] (unregister_netdev+0x20/0x28) [ 4136.114881] r5:00000000 r4:ee416000 [ 4136.114891] [<c07676e4>] (unregister_netdev) from [<c0891360>] (bnep_session+0x4cc/0x880) [ 4136.114896] r5:00000000 r4:ee416000 [ 4136.114907] [<c0890e94>] (bnep_session) from [<c0141474>] (kthread+0xf0/0x110) [ 4136.114915] r10:00000000 r9:00000000 r8:c0890e94 r7:ee4164c0 r6:ee746000 r5:ee6fea80 [ 4136.114919] r4:00000000 [ 4136.114930] [<c0141384>] (kthread) from [<c0107b70>] (ret_from_fork+0x14/0x24) [ 4136.114937] r8:00000000 r7:00000000 r6:00000000 r5:c0141384 r4:ee6fea80 [ 4136.114941] ---[ end trace 79b76e2cb188c012 ]--- [ 4136.114959] ------------[ cut here ]------------ [ 4136.114970] WARNING: CPU: 0 PID: 427 at fs/sysfs/group.c:237 sysfs_remove_group+0x90/0x9c [ 4136.114974] sysfs group 'statistics' not found for kobject 'bnep0' [ 4136.114976] Modules linked in: [ 4136.114988] CPU: 0 PID: 427 Comm: kbnepd bnep0 Tainted: G W 4.9.129-00093-g98220ccd50ff #180 [ 4136.114991] Hardware name: Freescale i.MX6 SoloX (Device Tree) [ 4136.114994] Backtrace: [ 4136.115010] [<c010bbc4>] (dump_backtrace) from [<c010be70>] (show_stack+0x18/0x1c) [ 4136.115017] r7:00000009 r6:60070013 r5:00000000 r4:c0e1c230 [ 4136.115026] [<c010be58>] (show_stack) from [<c03d9ce8>] (dump_stack+0x94/0xb0) [ 4136.115039] [<c03d9c54>] (dump_stack) from [<c012359c>] (__warn+0xd8/0x104) [ 4136.115046] r7:00000009 r6:c0bfe9f8 r5:00000000 r4:ee747d78 [ 4136.115057] [<c01234c4>] (__warn) from [<c0123604>] (warn_slowpath_fmt+0x3c/0x44) [ 4136.115066] r9:ffffffff r8:c0ec727c r7:c0e65724 r6:ee4162b0 r5:c0e60600 r4:c0bfea34 [ 4136.115078] [<c01235cc>] (warn_slowpath_fmt) from [<c027647c>] (sysfs_remove_group+0x90/0x9c) [ 4136.115083] r3:c0c50684 r2:c0bfea34 [ 4136.115086] r4:00000000 [ 4136.115096] [<c02763ec>] (sysfs_remove_group) from [<c02764b4>] (sysfs_remove_groups+0x2c/0x3c) [ 4136.115102] r6:c0e6056c r5:ee4162b0 r4:ee416430 [ 4136.115112] [<c0276488>] (sysfs_remove_groups) from [<c04f3734>] (device_remove_attrs+0x44/0x74) [ 4136.115117] r5:ee4162b0 r4:ee4162a8 [ 4136.115125] [<c04f36f0>] (device_remove_attrs) from [<c04f428c>] (device_del+0x108/0x224) [ 4136.115132] r7:eeb9a198 r6:ee4162b0 r5:ee4162a8 r4:ef1c4238 [ 4136.115142] [<c04f4184>] (device_del) from [<c0788428>] (netdev_unregister_kobject+0x5c/0x60) [ 4136.115149] r8:00000006 r7:024000c0 r6:eeb703c0 r5:ee4162a8 r4:ee416000 [ 4136.115161] [<c07883cc>] (netdev_unregister_kobject) from [<c0764858>] (rollback_registered_many+0x240/0x3b0) [ 4136.115166] r5:ee747e98 r4:ee416000 [ 4136.115177] [<c0764618>] (rollback_registered_many) from [<c0767674>] (unregister_netdevice_queue+0x78/0xe8) [ 4136.115186] r10:eea53684 r9:ee4164c0 r8:00000002 r7:00000145 r6:00000009 r5:00000000 [ 4136.115189] r4:ee416000 [ 4136.115198] [<c07675fc>] (unregister_netdevice_queue) from [<c0767704>] (unregister_netdev+0x20/0x28) [ 4136.115202] r5:00000000 r4:ee416000 [ 4136.115212] [<c07676e4>] (unregister_netdev) from [<c0891360>] (bnep_session+0x4cc/0x880) [ 4136.115217] r5:00000000 r4:ee416000 [ 4136.115226] [<c0890e94>] (bnep_session) from [<c0141474>] (kthread+0xf0/0x110) [ 4136.115235] r10:00000000 r9:00000000 r8:c0890e94 r7:ee4164c0 r6:ee746000 r5:ee6fea80 [ 4136.115239] r4:00000000 [ 4136.115249] [<c0141384>] (kthread) from [<c0107b70>] (ret_from_fork+0x14/0x24) [ 4136.115256] r8:00000000 r7:00000000 r6:00000000 r5:c0141384 r4:ee6fea80 [ 4136.115260] ---[ end trace 79b76e2cb188c013 ]--- -- You are receiving this mail because: You are the assignee for the bug.
