bisecting cause commit starting from aeaa925bff844d225f259215a250d2811e436499 building syzkaller on 2e9971bbbfb4df6ba0118353163a7703f3dbd6ec testing commit aeaa925bff844d225f259215a250d2811e436499 with gcc (GCC) 8.1.0 kernel signature: caa9396730fd82932f7d6b4a0fcf3870764accfcea2d6c09c93a073145ce4bdc all runs: crashed: KASAN: use-after-free Read in free_netdev testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.1.0 kernel signature: 7faa916acb81f294e530d3010c31e188b3f6ff1cf797eaddf4e633b58d649678 all runs: crashed: KASAN: use-after-free Read in free_netdev testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.1.0 kernel signature: 739e32c84bc95d1dc9a01bd49816e1325e6fad0655a28f7feaa3b59b27e634c6 all runs: crashed: KASAN: use-after-free Read in free_netdev testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.1.0 kernel signature: 1d25a90c3e22592f8fd7ee411b917034e718b247aec63199e4c75a6d50fe6703 run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in netif_napi_del run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in free_netdev run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in free_netdev testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.1.0 kernel signature: b7ab57c78d16ad03b6dbd85ee9f2412463b6ee1522c603ae569105db719c0f78 run #0: crashed: KASAN: use-after-free Read in netif_napi_del run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in netif_napi_del run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in free_netdev run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in free_netdev testing release v5.1 testing commit e93c9c99a629c61837d5a7fc2120cd2b6c70dbdd with gcc (GCC) 8.1.0 kernel signature: d6127be3be7f268ee6448a2bcf3067080c2dfa388c532d808765fa7e8b9dda15 run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in netif_napi_del run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in free_netdev run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: WARNING in rtnl_delete_link run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in free_netdev testing release v5.0 testing commit 1c163f4c7b3f621efff9b28a47abb36f7378d783 with gcc (GCC) 8.1.0 kernel signature: a9e79795ff6252b08bd26508031cea6d54669aabcc01e95c84120dc426a3a00b all runs: crashed: KASAN: use-after-free Read in free_netdev testing release v4.20 testing commit 8fe28cb58bcb235034b64cbbb7550a8a43fd88be with gcc (GCC) 8.1.0 kernel signature: b82b78eae15c456269254f49f35ebe618777048024354abc3c04eac7afe62c89 run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in netif_napi_del run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in netif_napi_del run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in free_netdev testing release v4.19 testing commit 84df9525b0c27f3ebc2ebb1864fa62a97fdedb7d with gcc (GCC) 8.1.0 kernel signature: d759f08153a8402fa58dacaafc20b8f79207f3809d4f15a085ea90171eda626e run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in netif_napi_del run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in netif_napi_del run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in free_netdev testing release v4.18 testing commit 94710cac0ef4ee177a63b5227664b38c95bbf703 with gcc (GCC) 8.1.0 kernel signature: 23ebb14bc07534b14fd015fe080cbc28c698daacb3e8719ffd94b629d641ba81 run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in free_netdev run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in netif_napi_del run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in free_netdev testing release v4.17 testing commit 29dcea88779c856c7dc92040a0c01233263101d4 with gcc (GCC) 8.1.0 kernel signature: aa8865c112301bd8c97c93f921156a34e486da26f887aa58027d442e689219ba run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in netif_napi_del run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in netif_napi_del testing release v4.16 testing commit 0adb32858b0bddf4ada5f364a84ed60b196dbcda with gcc (GCC) 8.1.0 kernel signature: 488cfedd5ba1e80bdde07b960464de0d36b9e370f9e4f29ec28663894cb96caa run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in netif_napi_del run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in netif_napi_del run #4: crashed: KASAN: use-after-free Read in netif_napi_del run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in netif_napi_del run #9: crashed: KASAN: use-after-free Read in netif_napi_del testing release v4.15 testing commit d8a5b80568a9cb66810e75b182018e9edb68e8ff with gcc (GCC) 8.1.0 kernel signature: d8c67ad02c0092ceecfda97159bb2042fef7cf8102632f7246de6c5ac673be41 run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in netif_napi_del run #5: crashed: KASAN: use-after-free Read in netif_napi_del run #6: crashed: KASAN: use-after-free Read in netif_napi_del run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in free_netdev testing release v4.14 testing commit bebc6082da0a9f5d47a1ea2edc099bf671058bd4 with gcc (GCC) 8.1.0 kernel signature: 8f0641518364aa9993a2766a5a48423cea931ef0f489b48e5253f727394339ba all runs: OK # git bisect start d8a5b80568a9cb66810e75b182018e9edb68e8ff bebc6082da0a9f5d47a1ea2edc099bf671058bd4 Bisecting: 8497 revisions left to test after this (roughly 13 steps) [5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a] Merge tag 'media/v4.15-1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media testing commit 5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a with gcc (GCC) 8.1.0 kernel signature: c1b97e51b058a91aabff409e0e8cdb930b7ff4b08c6fa51f7b6886c0a7b83f0c run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in netif_napi_del run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in free_netdev # git bisect bad 5d352e69c60e54b5f04d6e337a1d2bf0dbf3d94a Bisecting: 3798 revisions left to test after this (roughly 12 steps) [4e4510fec4af08ead21f6934c1410af1f19a8cad] Merge tag 'sound-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tiwai/sound testing commit 4e4510fec4af08ead21f6934c1410af1f19a8cad with gcc (GCC) 8.1.0 kernel signature: 9ca6550d7fa41da282eb7763bd7a7f4c006f20ea39eb9a244309a9efd2274c57 all runs: OK # git bisect good 4e4510fec4af08ead21f6934c1410af1f19a8cad Bisecting: 1899 revisions left to test after this (roughly 11 steps) [9fb7bd77d11ab03b4a969279de9f54d8fd6fe988] mlxsw: spectrum_ipip: Split accessor functions testing commit 9fb7bd77d11ab03b4a969279de9f54d8fd6fe988 with gcc (GCC) 8.1.0 kernel signature: 78364e5abaf14cdbf8438cee6cf3fcefbb4a2f6e54d7dde9a1bbe1d029115ffe run #0: crashed: KASAN: use-after-free Read in netif_napi_del run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in free_netdev run #5: crashed: KASAN: use-after-free Read in netif_napi_del run #6: crashed: KASAN: use-after-free Read in netif_napi_del run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in netif_napi_del run #9: crashed: KASAN: use-after-free Read in free_netdev # git bisect bad 9fb7bd77d11ab03b4a969279de9f54d8fd6fe988 Bisecting: 943 revisions left to test after this (roughly 10 steps) [af28f6f26a67ef850a26c42c49a1d9ca4927e10c] Merge tag 'mlx5-updates-2017-10-11' of git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux testing commit af28f6f26a67ef850a26c42c49a1d9ca4927e10c with gcc (GCC) 8.1.0 kernel signature: d60313c26e4f406055c0f6dea6c0c3250e39352883f87cd40f394ed96759433b run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in netif_napi_del run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in netif_napi_del run #9: crashed: KASAN: use-after-free Read in free_netdev # git bisect bad af28f6f26a67ef850a26c42c49a1d9ca4927e10c Bisecting: 477 revisions left to test after this (roughly 9 steps) [0ccdf3c7fdeda511b10def19505178a9d2d3fccd] sctp: add sockopt to get/set stream scheduler parameters testing commit 0ccdf3c7fdeda511b10def19505178a9d2d3fccd with gcc (GCC) 8.1.0 kernel signature: 5a682dda03e72d60b9199f6d0d8ed02aeebe46b4bf260a817089d3dd99562e1d run #0: crashed: KASAN: use-after-free Read in netif_napi_del run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in free_netdev run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in netif_napi_del run #9: crashed: KASAN: use-after-free Read in free_netdev # git bisect bad 0ccdf3c7fdeda511b10def19505178a9d2d3fccd Bisecting: 238 revisions left to test after this (roughly 8 steps) [e451ae8e4f6b3f6bd3b83a5595657b5421b3bf69] neigh: make struct neigh_table::entry_size unsigned int testing commit e451ae8e4f6b3f6bd3b83a5595657b5421b3bf69 with gcc (GCC) 8.1.0 kernel signature: 6dbb1323b4543239729608611b4e3ed151e7673b59e5aae76d0fa7ffd657c8a8 run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in free_netdev run #4: crashed: KASAN: use-after-free Read in netif_napi_del run #5: crashed: KASAN: use-after-free Read in netif_napi_del run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in netif_napi_del run #8: crashed: KASAN: use-after-free Read in free_netdev run #9: crashed: KASAN: use-after-free Read in free_netdev # git bisect bad e451ae8e4f6b3f6bd3b83a5595657b5421b3bf69 Bisecting: 118 revisions left to test after this (roughly 7 steps) [334e4a7d5505f59a741b0549f41082e29a914439] drivers: net: pcnet32: use setup_timer() helper. testing commit 334e4a7d5505f59a741b0549f41082e29a914439 with gcc (GCC) 8.1.0 kernel signature: 7903cc72ec273606b7c1b83ba20b411e8eff3128bbc03eec5c94d9aff2fa38ff all runs: OK # git bisect good 334e4a7d5505f59a741b0549f41082e29a914439 Bisecting: 59 revisions left to test after this (roughly 6 steps) [66f06890305eb2c8200cefbc3d6405ff6baef47e] drivers: net: cxgb: use setup_timer() helper. testing commit 66f06890305eb2c8200cefbc3d6405ff6baef47e with gcc (GCC) 8.1.0 kernel signature: 4aff886b24ea8e41629d1de27debefaef0343ef3c9576ac5ad9fe4c39ab55827 all runs: OK # git bisect good 66f06890305eb2c8200cefbc3d6405ff6baef47e Bisecting: 29 revisions left to test after this (roughly 5 steps) [e0f911c81e93fc23fe1a4fb0318ff1c3b1c9027f] cxgb4: fetch stats for offloaded tc flower flows testing commit e0f911c81e93fc23fe1a4fb0318ff1c3b1c9027f with gcc (GCC) 8.1.0 kernel signature: b5fe9891775d3e1e0d5bd3e2d64f111e368edb084685f21cdbddfaf7b72e5b01 all runs: OK # git bisect good e0f911c81e93fc23fe1a4fb0318ff1c3b1c9027f Bisecting: 14 revisions left to test after this (roughly 4 steps) [943170998b200190f99d3fe7e771437e2c51f319] tun: enable NAPI for TUN/TAP driver testing commit 943170998b200190f99d3fe7e771437e2c51f319 with gcc (GCC) 8.1.0 kernel signature: 04c572077538c27053518c911effcafef4a48147d623abffcdd408858ee722cf run #0: crashed: KASAN: use-after-free Read in free_netdev run #1: crashed: KASAN: use-after-free Read in free_netdev run #2: crashed: KASAN: use-after-free Read in free_netdev run #3: crashed: KASAN: use-after-free Read in netif_napi_del run #4: crashed: KASAN: use-after-free Read in free_netdev run #5: crashed: KASAN: use-after-free Read in free_netdev run #6: crashed: KASAN: use-after-free Read in free_netdev run #7: crashed: KASAN: use-after-free Read in free_netdev run #8: crashed: KASAN: use-after-free Read in netif_napi_del run #9: crashed: KASAN: use-after-free Read in netif_napi_del # git bisect bad 943170998b200190f99d3fe7e771437e2c51f319 Bisecting: 7 revisions left to test after this (roughly 3 steps) [39e50d9637f9a31967ac9e956b829ee8b50a750f] forcedeth: optimize the xmit/rx with unlikely testing commit 39e50d9637f9a31967ac9e956b829ee8b50a750f with gcc (GCC) 8.1.0 kernel signature: 082b0672fc11b1ead8468080d0158404ce2f5100ff3eff73369881326f7219dd all runs: OK # git bisect good 39e50d9637f9a31967ac9e956b829ee8b50a750f Bisecting: 3 revisions left to test after this (roughly 2 steps) [d835b63cc4ee67e59eed9d1957f729c0a30b7331] net: nfc: llcp_core: use setup_timer() helper. testing commit d835b63cc4ee67e59eed9d1957f729c0a30b7331 with gcc (GCC) 8.1.0 kernel signature: 8d23b0b12025c5a1778ced90ab49b6be3fa68f975ff166951e4887e90ba4c1d3 run #0: crashed: general protection fault in batadv_iv_ogm_queue_add run #1: OK run #2: OK run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK # git bisect bad d835b63cc4ee67e59eed9d1957f729c0a30b7331 Bisecting: 1 revision left to test after this (roughly 1 step) [b1e07c5486f0df26caf93234bd7db5545a37aba8] net: nfc: hci: use setup_timer() helper. testing commit b1e07c5486f0df26caf93234bd7db5545a37aba8 with gcc (GCC) 8.1.0 kernel signature: 034d4cf27d7d2f69c6dc6a1c92ca97faef4809e7cfe4ecf2e51da44c7bc3b73d all runs: OK # git bisect good b1e07c5486f0df26caf93234bd7db5545a37aba8 Bisecting: 0 revisions left to test after this (roughly 0 steps) [22d387e13ac357279ddac55694883fd3e30a5639] net: nfc: hci: llc_shdlc: use setup_timer() helper. testing commit 22d387e13ac357279ddac55694883fd3e30a5639 with gcc (GCC) 8.1.0 kernel signature: 6a9c1ef598fe30445011fb0e58adf65c63b6730267cc9e90c7e41532cf8aab3d all runs: OK # git bisect good 22d387e13ac357279ddac55694883fd3e30a5639 d835b63cc4ee67e59eed9d1957f729c0a30b7331 is the first bad commit commit d835b63cc4ee67e59eed9d1957f729c0a30b7331 Author: Allen Pais Date: Mon Sep 25 13:00:05 2017 +0530 net: nfc: llcp_core: use setup_timer() helper. Use setup_timer function instead of initializing timer with the function and data fields. Signed-off-by: Allen Pais Signed-off-by: David S. Miller net/nfc/llcp_core.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) culprit signature: 8d23b0b12025c5a1778ced90ab49b6be3fa68f975ff166951e4887e90ba4c1d3 parent signature: 6a9c1ef598fe30445011fb0e58adf65c63b6730267cc9e90c7e41532cf8aab3d revisions tested: 28, total time: 5h34m45.30608838s (build: 2h41m21.140656777s, test: 2h50m59.333465375s) first bad commit: d835b63cc4ee67e59eed9d1957f729c0a30b7331 net: nfc: llcp_core: use setup_timer() helper. cc: ["allen.lkml@gmail.com" "davem@davemloft.net" "linux-kernel@vger.kernel.org" "linux-wireless@vger.kernel.org" "netdev@vger.kernel.org" "sameo@linux.intel.com"] crash: general protection fault in batadv_iv_ogm_queue_add batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 20356 Comm: kworker/u4:8 Not tainted 4.14.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet task: ffff88012b2cc040 task.stack: ffff880121398000 RIP: 0010:batadv_iv_ogm_queue_add+0xdf/0x1110 net/batman-adv/bat_iv_ogm.c:772 RSP: 0018:ffff88012139eee0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88012139f108 RCX: ffff880124367580 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff88012139f130 R08: ffff880124367580 R09: 0000000000000001 R10: ffffed0024273e66 R11: ffff88012b2cc040 R12: 0000000000000084 R13: ffff880129ed6600 R14: dffffc0000000000 R15: ffffed0024273e66 FS: 0000000000000000(0000) GS:ffff88012c100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001206e2000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: batadv_iv_ogm_schedule+0xcc0/0x10b0 net/batman-adv/bat_iv_ogm.c:976 batadv_iv_send_outstanding_bat_ogm_packet+0x576/0xa30 net/batman-adv/bat_iv_ogm.c:1803 process_one_work+0x9f7/0x1a80 kernel/workqueue.c:2119 protocol 88fb is buggy, dev hsr_slave_0 protocol 88fb is buggy, dev hsr_slave_1 worker_thread+0x215/0x1820 kernel/workqueue.c:2253 kthread+0x376/0x440 kernel/kthread.c:231 ret_from_fork+0x2a/0x40 arch/x86/entry/entry_64.S:431 Code: f2 c7 40 20 f2 f2 f2 f2 c7 40 24 00 f2 f2 f2 c7 40 28 f2 f2 f2 f2 c7 40 2c 00 f2 f2 f2 c7 40 30 f3 f3 f3 f3 48 89 f8 48 c1 e8 03 <0f> b6 04 10 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 bd 0c 00 RIP: batadv_iv_ogm_queue_add+0xdf/0x1110 net/batman-adv/bat_iv_ogm.c:772 RSP: ffff88012139eee0 ---[ end trace f1e880689c220f85 ]---