bisecting cause commit starting from 454c576c3f5e51d60f00a4ac0dde07f4f9d70e9d building syzkaller on 6a81331a1d4c744da9204d02ec88d558f7eea9c9 testing commit 454c576c3f5e51d60f00a4ac0dde07f4f9d70e9d with gcc (GCC) 10.2.1 20210217 kernel signature: 44fae4a790f4a92799ed1d897d816c5af0849c8a4b92356deb41508b677804b5 run #0: crashed: possible deadlock in process_measurement run #1: crashed: possible deadlock in ovl_maybe_copy_up run #2: crashed: possible deadlock in process_measurement run #3: crashed: possible deadlock in process_measurement run #4: crashed: possible deadlock in process_measurement run #5: crashed: possible deadlock in ovl_maybe_copy_up run #6: crashed: possible deadlock in ovl_maybe_copy_up run #7: crashed: possible deadlock in process_measurement run #8: crashed: possible deadlock in ovl_maybe_copy_up run #9: crashed: possible deadlock in ovl_maybe_copy_up run #10: crashed: possible deadlock in ovl_maybe_copy_up run #11: crashed: possible deadlock in ovl_maybe_copy_up run #12: crashed: possible deadlock in ovl_maybe_copy_up run #13: crashed: possible deadlock in ovl_maybe_copy_up run #14: crashed: possible deadlock in process_measurement run #15: crashed: possible deadlock in ovl_maybe_copy_up run #16: crashed: possible deadlock in ovl_maybe_copy_up run #17: crashed: possible deadlock in ovl_maybe_copy_up run #18: crashed: possible deadlock in process_measurement run #19: crashed: possible deadlock in ovl_maybe_copy_up testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b with gcc (GCC) 10.2.1 20210217 kernel signature: 0f3c1837f4dfe64969c4bc941acbd990cc700391e4774b889e5ff798e68c350c run #0: crashed: possible deadlock in ovl_maybe_copy_up run #1: crashed: possible deadlock in ovl_maybe_copy_up run #2: crashed: possible deadlock in ovl_maybe_copy_up run #3: crashed: possible deadlock in ovl_maybe_copy_up run #4: crashed: possible deadlock in ovl_maybe_copy_up run #5: crashed: possible deadlock in process_measurement run #6: crashed: possible deadlock in ovl_maybe_copy_up run #7: crashed: possible deadlock in process_measurement run #8: crashed: possible deadlock in ovl_maybe_copy_up run #9: crashed: possible deadlock in ovl_maybe_copy_up testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 with gcc (GCC) 10.2.1 20210217 kernel signature: 45351986ab4f7e2ffa588cbb8002553c0f0ffc0f4804c7e8ea1b1e1189dabf4b run #0: crashed: possible deadlock in ovl_maybe_copy_up run #1: crashed: possible deadlock in ovl_maybe_copy_up run #2: crashed: possible deadlock in ovl_maybe_copy_up run #3: crashed: possible deadlock in ovl_maybe_copy_up run #4: crashed: possible deadlock in ovl_maybe_copy_up run #5: crashed: possible deadlock in process_measurement run #6: crashed: possible deadlock in process_measurement run #7: crashed: possible deadlock in ovl_maybe_copy_up run #8: crashed: possible deadlock in ovl_maybe_copy_up run #9: crashed: possible deadlock in ovl_maybe_copy_up testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b with gcc (GCC) 10.2.1 20210217 kernel signature: ad0b0b6275b4c2025aff33985cc5dc977cd00c80a45c0b559be390554afd3106 run #0: crashed: possible deadlock in mnt_want_write run #1: crashed: possible deadlock in mnt_want_write run #2: crashed: possible deadlock in mnt_want_write run #3: crashed: possible deadlock in mnt_want_write run #4: crashed: possible deadlock in process_measurement run #5: crashed: possible deadlock in mnt_want_write run #6: crashed: possible deadlock in mnt_want_write run #7: crashed: possible deadlock in mnt_want_write run #8: crashed: possible deadlock in process_measurement run #9: crashed: possible deadlock in mnt_want_write testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.4.1 20210217 kernel signature: be3bf64685d71e06c920ec95ed5cadd9d0988b73683d12046579ee967c67df02 run #0: crashed: possible deadlock in mnt_want_write run #1: crashed: possible deadlock in mnt_want_write run #2: crashed: possible deadlock in mnt_want_write run #3: crashed: possible deadlock in mnt_want_write run #4: crashed: possible deadlock in process_measurement run #5: crashed: possible deadlock in mnt_want_write run #6: crashed: possible deadlock in mnt_want_write run #7: crashed: possible deadlock in process_measurement run #8: crashed: possible deadlock in mnt_want_write run #9: crashed: possible deadlock in mnt_want_write testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.4.1 20210217 kernel signature: 82224589df8468e91bb0a65ee3ae9007a07ca00d4aef33b388c095fe0639fdc5 run #0: crashed: possible deadlock in mnt_want_write run #1: crashed: possible deadlock in mnt_want_write run #2: crashed: possible deadlock in mnt_want_write run #3: crashed: possible deadlock in mnt_want_write run #4: crashed: possible deadlock in process_measurement run #5: crashed: possible deadlock in mnt_want_write run #6: crashed: possible deadlock in mnt_want_write run #7: crashed: possible deadlock in mnt_want_write run #8: crashed: possible deadlock in process_measurement run #9: crashed: possible deadlock in mnt_want_write testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.4.1 20210217 kernel signature: 5f1162f9ff6551d73fe13756d6bb60095ae747e14c3ebfe30b34b85fe7b2f1c8 run #0: crashed: possible deadlock in mnt_want_write run #1: crashed: possible deadlock in mnt_want_write run #2: crashed: possible deadlock in mnt_want_write run #3: crashed: possible deadlock in mnt_want_write run #4: crashed: possible deadlock in mnt_want_write run #5: crashed: possible deadlock in mnt_want_write run #6: crashed: possible deadlock in mnt_want_write run #7: crashed: possible deadlock in mnt_want_write run #8: crashed: possible deadlock in mnt_want_write run #9: boot failed: can't ssh into the instance testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.4.1 20210217 kernel signature: 73e2e59424b782630c4208a1e3462cd44b3adfea93386ae1b6ffc8f3979fda87 all runs: crashed: possible deadlock in mnt_want_write testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.4.1 20210217 kernel signature: 149e828fa86d368a34fb4cc6e916996ce9669d35b1cfc1c29ebbaec794543ea1 all runs: crashed: possible deadlock in mnt_want_write testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.4.1 20210217 kernel signature: 87bdb29c4bcaa126182e862ca2f3dc7914a561af1f5ade3db4fceb3ff1fc804d all runs: OK # git bisect start 219d54332a09e8d8741c1e1982f5eae56099de85 4d856f72c10ecb060868ed10ff1b1453943fc6c8 Bisecting: 7882 revisions left to test after this (roughly 13 steps) [a9f8b38a071b468276a243ea3ea5a0636e848cf2] Merge tag 'for-linus-5.4-1' of git://github.com/cminyard/linux-ipmi testing commit a9f8b38a071b468276a243ea3ea5a0636e848cf2 with gcc (GCC) 8.4.1 20210217 kernel signature: 74d62ebc107e2eb387a8d702d42bb2e39388d88fbb512ff358f83740634f690a all runs: crashed: possible deadlock in mnt_want_write # git bisect bad a9f8b38a071b468276a243ea3ea5a0636e848cf2 Bisecting: 3920 revisions left to test after this (roughly 12 steps) [fe38bd6862074c0a2b9be7f31f043aaa70b2af5f] Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm testing commit fe38bd6862074c0a2b9be7f31f043aaa70b2af5f with gcc (GCC) 8.4.1 20210217 kernel signature: 4354a94ea95c6daf513adf8efb8e7788f005881fcc5042b6b9b46293d5314abf all runs: OK # git bisect good fe38bd6862074c0a2b9be7f31f043aaa70b2af5f Bisecting: 1962 revisions left to test after this (roughly 11 steps) [069841ef8293697e951c34f9a45601b77fb541d7] Merge branch '40GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue testing commit 069841ef8293697e951c34f9a45601b77fb541d7 with gcc (GCC) 8.4.1 20210217 kernel signature: 0038871e224a6f57f3b84ba909e7e6a31714742fc6c3405cbe7874731d797c06 all runs: crashed: possible deadlock in mnt_want_write # git bisect bad 069841ef8293697e951c34f9a45601b77fb541d7 Bisecting: 978 revisions left to test after this (roughly 10 steps) [f33bf6b00f20c9d26c42dfdaf8b83c2b0c1e6f71] net: stmmac: dwmac-meson: use devm_platform_ioremap_resource() to simplify code testing commit f33bf6b00f20c9d26c42dfdaf8b83c2b0c1e6f71 with gcc (GCC) 8.4.1 20210217 kernel signature: d4e6a5dcce1dfa69f4d4adb37b4c16369b0d774566f565231be1c247da100ae2 all runs: crashed: possible deadlock in mnt_want_write # git bisect bad f33bf6b00f20c9d26c42dfdaf8b83c2b0c1e6f71 Bisecting: 489 revisions left to test after this (roughly 9 steps) [16e9b481e988b1f7e6df2243bb510e1c9b581272] nfp: no need to check return value of debugfs_create functions testing commit 16e9b481e988b1f7e6df2243bb510e1c9b581272 with gcc (GCC) 8.4.1 20210217 kernel signature: 246a5f503c0c4db14274d33459bb12707bb7557675993b4dca37c859681a8a98 all runs: OK # git bisect good 16e9b481e988b1f7e6df2243bb510e1c9b581272 Bisecting: 244 revisions left to test after this (roughly 8 steps) [a4d2113e46c1d2ded1bfed9a19fe17b5ab2d584c] ipvlan: set hw_enc_features like macvlan testing commit a4d2113e46c1d2ded1bfed9a19fe17b5ab2d584c with gcc (GCC) 8.4.1 20210217 kernel signature: 7437d3216aefaa4092af8abdb747be4149d131bd786956cf9383b2a71567a071 all runs: crashed: possible deadlock in mnt_want_write # git bisect bad a4d2113e46c1d2ded1bfed9a19fe17b5ab2d584c Bisecting: 122 revisions left to test after this (roughly 7 steps) [043b8413e8c0c0ffbf8be268eb73716e05a96064] net: devlink: remove redundant rtnl lock assert testing commit 043b8413e8c0c0ffbf8be268eb73716e05a96064 with gcc (GCC) 8.4.1 20210217 kernel signature: 0e8fe53b539980524d078f264a3702e14a02bfca3152ee39f846679850799f53 all runs: OK # git bisect good 043b8413e8c0c0ffbf8be268eb73716e05a96064 Bisecting: 68 revisions left to test after this (roughly 6 steps) [8d73f8f23e6b869b726cb01dd4747f56dc88660a] page_pool: fix logic in __page_pool_get_cached testing commit 8d73f8f23e6b869b726cb01dd4747f56dc88660a with gcc (GCC) 8.4.1 20210217 kernel signature: dd0c73493f078664d1a91d2a7feffed93b3dc7059d629ed1f5dcd2b48a38eb7f all runs: crashed: possible deadlock in mnt_want_write # git bisect bad 8d73f8f23e6b869b726cb01dd4747f56dc88660a Bisecting: 25 revisions left to test after this (roughly 5 steps) [c162610c7db2e9611a7b3ec806f9c97fcfec0b0b] Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next testing commit c162610c7db2e9611a7b3ec806f9c97fcfec0b0b with gcc (GCC) 8.4.1 20210217 kernel signature: 4a52544d77a1de70d7e5e932bfe6da5e0d912658536fef62eae180aa5c82d953 all runs: crashed: possible deadlock in mnt_want_write # git bisect bad c162610c7db2e9611a7b3ec806f9c97fcfec0b0b Bisecting: 13 revisions left to test after this (roughly 4 steps) [2a475c409fe81a76fb26a6b023509d648237bbe6] kbuild: remove all netfilter headers from header-test blacklist. testing commit 2a475c409fe81a76fb26a6b023509d648237bbe6 with gcc (GCC) 8.4.1 20210217 kernel signature: 57ee672f010ccfe550d98967e9fc5b3d90b636ba4fff0f31cd2513347d6f6546 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 2a475c409fe81a76fb26a6b023509d648237bbe6 Bisecting: 13 revisions left to test after this (roughly 4 steps) [65b27995a4ab8fc51b4adc6b4dcdca20f7a595bb] net: phy: let phy_speed_down/up support speeds >1Gbps testing commit 65b27995a4ab8fc51b4adc6b4dcdca20f7a595bb with gcc (GCC) 8.4.1 20210217 kernel signature: e0774c0fa751e91657e0a1c3fa816a84f5f898c5771fde1c447629f618e0dfb5 all runs: OK # git bisect good 65b27995a4ab8fc51b4adc6b4dcdca20f7a595bb Bisecting: 11 revisions left to test after this (roughly 4 steps) [20a9379d9a03ee0712d225035308973ecc5f6783] netfilter: remove "#ifdef __KERNEL__" guards from some headers. testing commit 20a9379d9a03ee0712d225035308973ecc5f6783 with gcc (GCC) 8.4.1 20210217 kernel signature: 57ee672f010ccfe550d98967e9fc5b3d90b636ba4fff0f31cd2513347d6f6546 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 20a9379d9a03ee0712d225035308973ecc5f6783 Bisecting: 11 revisions left to test after this (roughly 4 steps) [1b90af292e71b20d03b837d39406acfbdc5d4b2a] ipvs: Improve robustness to the ipvs sysctl testing commit 1b90af292e71b20d03b837d39406acfbdc5d4b2a with gcc (GCC) 8.4.1 20210217 kernel signature: ab64dc62b6bd6ca033d1c4e039c2318852b38030431d57adaedf36ab4ca0bf03 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 1b90af292e71b20d03b837d39406acfbdc5d4b2a Bisecting: 11 revisions left to test after this (roughly 4 steps) [5785cf15fd74ec3b1a076fd39bc67382a8455fe7] netfilter: nf_tables: add missing prototypes. testing commit 5785cf15fd74ec3b1a076fd39bc67382a8455fe7 with gcc (GCC) 8.4.1 20210217 kernel signature: 57ee672f010ccfe550d98967e9fc5b3d90b636ba4fff0f31cd2513347d6f6546 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 5785cf15fd74ec3b1a076fd39bc67382a8455fe7 Bisecting: 11 revisions left to test after this (roughly 4 steps) [d55d70894c6d4709b9ae61109a9fa7c319586b53] r8152: use alloc_pages for rx buffer testing commit d55d70894c6d4709b9ae61109a9fa7c319586b53 with gcc (GCC) 8.4.1 20210217 kernel signature: 61f4fa21f35c526296e06fd3c84005af92379bd8ad175e3f2791419dc49b2a57 all runs: OK # git bisect good d55d70894c6d4709b9ae61109a9fa7c319586b53 Bisecting: 9 revisions left to test after this (roughly 3 steps) [0abc8bf4f2842e409926096f0fa009b468cbd855] netfilter: add missing IS_ENABLED(CONFIG_NF_CONNTRACK) checks to some header-files. testing commit 0abc8bf4f2842e409926096f0fa009b468cbd855 with gcc (GCC) 8.4.1 20210217 kernel signature: e5832bc52e831c178a83398f297ae63886b5075af31677ba763663dfc3c28fe4 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 0abc8bf4f2842e409926096f0fa009b468cbd855 Bisecting: 9 revisions left to test after this (roughly 3 steps) [78458e3e08cda2aacaec9fde8c295dfc2f88618a] netfilter: add missing IS_ENABLED(CONFIG_NETFILTER) checks to some header-files. testing commit 78458e3e08cda2aacaec9fde8c295dfc2f88618a with gcc (GCC) 8.4.1 20210217 kernel signature: 57ee672f010ccfe550d98967e9fc5b3d90b636ba4fff0f31cd2513347d6f6546 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 78458e3e08cda2aacaec9fde8c295dfc2f88618a Bisecting: 9 revisions left to test after this (roughly 3 steps) [7e59b3fea2a2510b52761c20ccc71d3e9f6b7db8] netfilter: remove unnecessary spaces testing commit 7e59b3fea2a2510b52761c20ccc71d3e9f6b7db8 with gcc (GCC) 8.4.1 20210217 kernel signature: ab64dc62b6bd6ca033d1c4e039c2318852b38030431d57adaedf36ab4ca0bf03 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 7e59b3fea2a2510b52761c20ccc71d3e9f6b7db8 Bisecting: 9 revisions left to test after this (roughly 3 steps) [47e640af2e492cc28778dd6f894d50313f7fba75] netfilter: add missing IS_ENABLED(CONFIG_NF_TABLES) check to header-file. testing commit 47e640af2e492cc28778dd6f894d50313f7fba75 with gcc (GCC) 8.4.1 20210217 kernel signature: 1c687e5f054c8aad8fa1cb12dab0f5077515f61ee409b0ed5e458b754f0953f1 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 47e640af2e492cc28778dd6f894d50313f7fba75 Bisecting: 9 revisions left to test after this (roughly 3 steps) [105333435b4f3b21ffc325f32fae17719310db64] netfilter: connlabels: prefer static lock initialiser testing commit 105333435b4f3b21ffc325f32fae17719310db64 with gcc (GCC) 8.4.1 20210217 kernel signature: e734da947765827db2db1239935cccc0bc9de5d6c81a732a42f82eae1fe0c4a2 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 105333435b4f3b21ffc325f32fae17719310db64 Bisecting: 9 revisions left to test after this (roughly 3 steps) [9211bfbff80a7604273086fec5685efcdc10be2b] netfilter: add missing IS_ENABLED(CONFIG_BRIDGE_NETFILTER) checks to header-file. testing commit 9211bfbff80a7604273086fec5685efcdc10be2b with gcc (GCC) 8.4.1 20210217 kernel signature: 1c687e5f054c8aad8fa1cb12dab0f5077515f61ee409b0ed5e458b754f0953f1 all runs: boot failed: general protection fault in dma_direct_max_mapping_size # git bisect skip 9211bfbff80a7604273086fec5685efcdc10be2b Bisecting: 9 revisions left to test after this (roughly 3 steps) [b753c5a7f99f390fc100de18647ce0dcacdceafc] Merge branch 'r8152-RX-improve' testing commit b753c5a7f99f390fc100de18647ce0dcacdceafc with gcc (GCC) 8.4.1 20210217 kernel signature: a17d4944ddeef09708423902abdfd5cdd0d682b455957560e2ad389476afff54 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 reproducer seems to be flaky # git bisect bad b753c5a7f99f390fc100de18647ce0dcacdceafc Bisecting: 1 revision left to test after this (roughly 1 step) [47922fcde5365a2d37e8d4056e537fc8a7213c39] r8152: support skb_add_rx_frag testing commit 47922fcde5365a2d37e8d4056e537fc8a7213c39 with gcc (GCC) 8.4.1 20210217 kernel signature: 3443025f26b1ee70d42cac4d538c2d13fd71c1bef2373dfdbb793faa47351ddb all runs: OK # git bisect good 47922fcde5365a2d37e8d4056e537fc8a7213c39 Bisecting: 0 revisions left to test after this (roughly 0 steps) [e4a5017ac5b3924384a36a0a043cb65bb41dd5be] r8152: change rx_copybreak and rx_pending through ethtool testing commit e4a5017ac5b3924384a36a0a043cb65bb41dd5be with gcc (GCC) 8.4.1 20210217 kernel signature: a17d4944ddeef09708423902abdfd5cdd0d682b455957560e2ad389476afff54 all runs: OK # git bisect good e4a5017ac5b3924384a36a0a043cb65bb41dd5be b753c5a7f99f390fc100de18647ce0dcacdceafc is the first bad commit commit b753c5a7f99f390fc100de18647ce0dcacdceafc Merge: e070ca371f2b e4a5017ac5b3 Author: Jakub Kicinski Date: Tue Aug 13 18:12:45 2019 -0700 Merge branch 'r8152-RX-improve' Hayes says: ==================== v2: For patch #2, replace list_for_each_safe with list_for_each_entry_safe. Remove unlikely in WARN_ON. Adjust the coding style. For patch #4, replace list_for_each_safe with list_for_each_entry_safe. Remove "else" after "continue". For patch #5. replace sysfs with ethtool to modify rx_copybreak and rx_pending. v1: The different chips use different rx buffer size. Use skb_add_rx_frag() to reduce memory copy for RX. ==================== Signed-off-by: Jakub Kicinski drivers/net/usb/r8152.c | 374 +++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 304 insertions(+), 70 deletions(-) Reproducer flagged being flaky revisions tested: 34, total time: 8h12m29.170448684s (build: 3h40m53.04420413s, test: 4h27m45.676127195s) first bad commit: b753c5a7f99f390fc100de18647ce0dcacdceafc Merge branch 'r8152-RX-improve' recipients (to): ["jakub.kicinski@netronome.com"] recipients (cc): [] crash: general protection fault in batadv_iv_ogm_queue_add 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 CPU: 0 PID: 10425 Comm: kworker/u4:5 Not tainted 5.3.0-rc3-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 RIP: 0010:batadv_iv_ogm_queue_add+0x9b/0xec0 net/batman-adv/bat_iv_ogm.c:599 Code: 44 89 8d 64 ff ff ff c7 02 f1 f1 f1 f1 c7 42 04 04 f2 f2 f2 48 89 fa 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 cb 0b 00 00 RSP: 0018:ffff8880b15f7ac0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888097c8ed00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff8880b15f7bd8 R08: ffff888097c8ed00 R09: 0000000000000001 R10: ffffed10162bef8f R11: 0000000000000003 R12: ffff888097c8ed00 R13: dffffc0000000000 R14: ffff8880a5ce8b40 R15: 000000000000003c FS: 0000000000000000(0000) GS:ffff8880ba200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3732e85000 CR3: 00000000a3df7000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: batadv_iv_ogm_schedule+0xb47/0xe80 net/batman-adv/bat_iv_ogm.c:807 batadv_iv_send_outstanding_bat_ogm_packet+0x54c/0x780 net/batman-adv/bat_iv_ogm.c:1669 process_one_work+0x7d2/0x1560 kernel/workqueue.c:2269 worker_thread+0x85/0xb60 kernel/workqueue.c:2415 kthread+0x331/0x3f0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace a95b82a1ec97a07a ]--- RIP: 0010:batadv_iv_ogm_queue_add+0x9b/0xec0 net/batman-adv/bat_iv_ogm.c:599 Code: 44 89 8d 64 ff ff ff c7 02 f1 f1 f1 f1 c7 42 04 04 f2 f2 f2 48 89 fa 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 cb 0b 00 00 RSP: 0018:ffff8880b15f7ac0 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff888097c8ed00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff8880b15f7bd8 R08: ffff888097c8ed00 R09: 0000000000000001 R10: ffffed10162bef8f R11: 0000000000000003 R12: ffff888097c8ed00 R13: dffffc0000000000 R14: ffff8880a5ce8b40 R15: 000000000000003c FS: 0000000000000000(0000) GS:ffff8880ba200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3732e85000 CR3: 00000000b35fe000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400