bisecting cause commit starting from 7ac3a1c1ae5152e1d18cf6df5b6c3c9847535e78 building syzkaller on 858ea628800647d5e5b68b11441e42b8ef5652c1 testing commit 7ac3a1c1ae5152e1d18cf6df5b6c3c9847535e78 with gcc (GCC) 10.2.1 20210217 kernel signature: c2470cbaddf978d799580c4546196ebfc4111ec824d9083635b0467078efa8e8 run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in bcm_release run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in register_netdevice_notifier run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in bcm_release run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in bcm_release run #10: crashed: INFO: task hung in bcm_release run #11: crashed: INFO: task hung in register_netdevice_notifier run #12: crashed: INFO: task hung in bcm_release run #13: crashed: INFO: task hung in bcm_release run #14: crashed: INFO: task hung in bcm_release run #15: crashed: INFO: task hung in bcm_release run #16: crashed: INFO: task hung in register_netdevice_notifier run #17: crashed: INFO: task hung in bcm_release run #18: OK run #19: OK testing release v5.12 testing commit 9f4ad9e425a1d3b6a34617b8ea226d56a119a717 with gcc (GCC) 10.2.1 20210217 kernel signature: 20a3195b0c2adea39c30d2e9f830a6fa425a34f031f28cd84a5fc4bf09ce8f4d run #0: crashed: INFO: task hung in register_netdevice_notifier run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in register_netdevice_notifier run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in register_netdevice_notifier run #6: crashed: INFO: task hung in register_netdevice_notifier run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in bcm_release run #9: OK testing release v5.11 testing commit f40ddce88593482919761f74910f42f4b84c004b with gcc (GCC) 10.2.1 20210217 kernel signature: 22b26ae1e3be417e2ad324e47433a262e845b6471dfc09f4fa2f647b3330df8e run #0: crashed: INFO: task hung in register_netdevice_notifier run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in bcm_release run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in bcm_release run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in bcm_release testing release v5.10 testing commit 2c85ebc57b3e1817b6ce1a6b703928e113a90442 with gcc (GCC) 10.2.1 20210217 kernel signature: 8f55ba93fd53951cac9b68b979c728becbef461543abacbe99727324ff41baf6 run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in register_netdevice_notifier run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in bcm_release run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in bcm_release testing release v5.9 testing commit bbf5c979011a099af5dc76498918ed7df445635b with gcc (GCC) 10.2.1 20210217 kernel signature: f654d07eeb7c456b884d4afbd5bc4d393d1b1677ed42327eee0eaef482a1d4de run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in bcm_release run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in register_netdevice_notifier run #7: OK run #8: OK run #9: OK testing release v5.8 testing commit bcf876870b95592b52519ed4aafcf9d95999bc9c with gcc (GCC) 8.4.1 20210217 kernel signature: 1063ebaf54671db7804acf12269942e9a5933d00bfb78bb5cf898a218f3c1d07 run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in register_netdevice_notifier run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in register_netdevice_notifier run #7: crashed: INFO: task hung in register_netdevice_notifier run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in bcm_release testing release v5.7 testing commit 3d77e6a8804abcc0504c904bd6e5cdf3a5cf8162 with gcc (GCC) 8.4.1 20210217 kernel signature: 3856a09b3d94850025e3ae49dd0f33b972955333e09df445983a6a278d85997d run #0: crashed: INFO: task hung in register_netdevice_notifier run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in register_netdevice_notifier run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in register_netdevice_notifier run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in bcm_release testing release v5.6 testing commit 7111951b8d4973bda27ff663f2cf18b663d15b48 with gcc (GCC) 8.4.1 20210217 kernel signature: a3b93acd1315ac27fd28df3f64d6ec371b03ab2c3dca6caf01eeb51039157802 run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in bcm_release run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in register_netdevice_notifier run #5: crashed: INFO: task hung in register_netdevice_notifier run #6: crashed: INFO: task hung in bcm_release run #7: crashed: INFO: task hung in register_netdevice_notifier run #8: crashed: INFO: task hung in bcm_release run #9: OK testing release v5.5 testing commit d5226fa6dbae0569ee43ecfc08bdcd6770fc4755 with gcc (GCC) 8.4.1 20210217 kernel signature: 56b75590080ebce41771eb20fb3a18a21250479d609f5cd866a9e9cf93705477 run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in register_netdevice_notifier run #2: crashed: INFO: task hung in bcm_release run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in bcm_release run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in register_netdevice_notifier testing release v5.4 testing commit 219d54332a09e8d8741c1e1982f5eae56099de85 with gcc (GCC) 8.4.1 20210217 kernel signature: c6858008ba2dd87e1e0dfa3f7b77c43b09b0dc43a2a0142524db4f19e9503c6e run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in bcm_release run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in register_netdevice_notifier run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in register_netdevice_notifier testing release v5.3 testing commit 4d856f72c10ecb060868ed10ff1b1453943fc6c8 with gcc (GCC) 8.4.1 20210217 kernel signature: aae18b99c108d4b86fb7c39080c3a8373862416e546d19d54d8a47dcb2701455 run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in bcm_release run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in bcm_release run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in register_netdevice_notifier testing release v5.2 testing commit 0ecfebd2b52404ae0c54a878c872bb93363ada36 with gcc (GCC) 8.4.1 20210217 kernel signature: e13f671b39135f0fd02c29412f7240f2d07a062c4a49e605a3f48631956d18cb all runs: OK # git bisect start 4d856f72c10ecb060868ed10ff1b1453943fc6c8 0ecfebd2b52404ae0c54a878c872bb93363ada36 Bisecting: 7848 revisions left to test after this (roughly 13 steps) [43c95d3694cc448fdf50bd53b7ff3a5bb4655883] Merge tag 'pinctrl-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl testing commit 43c95d3694cc448fdf50bd53b7ff3a5bb4655883 with gcc (GCC) 8.4.1 20210217 kernel signature: eabc8bbc5dcf609fab110f03d71d6bf92f6277515c995067afc0f2a5d60231f3 run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in register_netdevice_notifier run #2: crashed: INFO: task hung in register_netdevice_notifier run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in register_netdevice_notifier run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in register_netdevice_notifier run #9: crashed: INFO: task hung in bcm_release # git bisect bad 43c95d3694cc448fdf50bd53b7ff3a5bb4655883 Bisecting: 4619 revisions left to test after this (roughly 12 steps) [8f6ccf6159aed1f04c6d179f61f6fb2691261e84] Merge tag 'clone3-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux testing commit 8f6ccf6159aed1f04c6d179f61f6fb2691261e84 with gcc (GCC) 8.4.1 20210217 kernel signature: 5cde3d358e6e31f8efcca9abd8ba707b4a789878c8431b21bec8ddb40ad6843a all runs: OK # git bisect good 8f6ccf6159aed1f04c6d179f61f6fb2691261e84 Bisecting: 2306 revisions left to test after this (roughly 11 steps) [753c8d9b7d81206bb5d011b28abe829d364b028e] Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 753c8d9b7d81206bb5d011b28abe829d364b028e with gcc (GCC) 8.4.1 20210217 kernel signature: 880b18a351f2be3b7c532bf624aaf892b289334192ec050f91732b99b2998c58 run #0: crashed: general protection fault in send_hsr_supervision_frame run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in bcm_release run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in bcm_release run #6: crashed: INFO: task hung in bcm_release run #7: crashed: INFO: task hung in register_netdevice_notifier run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in bcm_release # git bisect bad 753c8d9b7d81206bb5d011b28abe829d364b028e Bisecting: 1156 revisions left to test after this (roughly 10 steps) [2f9b0d93a9d3ec64558537ab5d7cff820886afa4] net: ethernet: ti: cpsw: Fix suspend/resume break testing commit 2f9b0d93a9d3ec64558537ab5d7cff820886afa4 with gcc (GCC) 8.4.1 20210217 kernel signature: f40a4170f7a90e9adc282abedb44fbd5d67db1db2e3f3710bbc795c9bcbe853e all runs: crashed: INFO: task hung in bcm_release # git bisect bad 2f9b0d93a9d3ec64558537ab5d7cff820886afa4 Bisecting: 577 revisions left to test after this (roughly 9 steps) [d28d66e5a92de81199d21b696df707068361a4e7] net: ethernet: mediatek: fix mtk_eth_soc build errors & warnings testing commit d28d66e5a92de81199d21b696df707068361a4e7 with gcc (GCC) 8.4.1 20210217 kernel signature: b66b5b8050e11f0c981a9a892fca6c93d66fe2c476d9aa065fd62fac7ccb3010 all runs: OK # git bisect good d28d66e5a92de81199d21b696df707068361a4e7 Bisecting: 288 revisions left to test after this (roughly 8 steps) [9126e75e39e14c357cfb2820abf0733bbc3cd8dc] net: ethernet: ti: cpsw_ethtool: simplify slave loops testing commit 9126e75e39e14c357cfb2820abf0733bbc3cd8dc with gcc (GCC) 8.4.1 20210217 kernel signature: 35c91f66e0c9a6d8662410532c0da2eee01f14a3c70a2090428b8afc3620651b all runs: OK # git bisect good 9126e75e39e14c357cfb2820abf0733bbc3cd8dc Bisecting: 144 revisions left to test after this (roughly 7 steps) [c82481f7ea21be8ec960a28aef07bf258f6820b7] netlink: Add field to skip in-kernel notifications testing commit c82481f7ea21be8ec960a28aef07bf258f6820b7 with gcc (GCC) 8.4.1 20210217 kernel signature: 934ee125ca8e47357b48303a48342a7fb844fb0f69a600b01370ae255b590da1 all runs: OK # git bisect good c82481f7ea21be8ec960a28aef07bf258f6820b7 Bisecting: 76 revisions left to test after this (roughly 6 steps) [497ad9f5b2dc86b733761b9afa44ecfa2f17be65] page_pool: fix compile warning when CONFIG_PAGE_POOL is disabled testing commit 497ad9f5b2dc86b733761b9afa44ecfa2f17be65 with gcc (GCC) 8.4.1 20210217 kernel signature: 626cbb04160b3ae6b459081ce48136bdfe44276dec40dc13caf45dc138ea223d run #0: crashed: INFO: task hung in bcm_release run #1: crashed: INFO: task hung in bcm_release run #2: crashed: INFO: task hung in bcm_release run #3: crashed: INFO: task hung in bcm_release run #4: crashed: INFO: task hung in bcm_release run #5: crashed: INFO: task hung in register_netdevice_notifier run #6: crashed: INFO: task hung in register_netdevice_notifier run #7: crashed: INFO: task hung in bcm_release run #8: crashed: INFO: task hung in bcm_release run #9: crashed: INFO: task hung in bcm_release # git bisect bad 497ad9f5b2dc86b733761b9afa44ecfa2f17be65 Bisecting: 33 revisions left to test after this (roughly 5 steps) [39f5886032380e49119786b23274b38e9b3aa99c] net/mlx5: add missing void argument to function mlx5_devlink_alloc testing commit 39f5886032380e49119786b23274b38e9b3aa99c with gcc (GCC) 8.4.1 20210217 kernel signature: 86b1cad6e9ee1de3003cf80166b8029b0a2c9a89400a1fea8083d7143ce51ecb all runs: OK # git bisect good 39f5886032380e49119786b23274b38e9b3aa99c Bisecting: 16 revisions left to test after this (roughly 4 steps) [6bf071bf09d4b2ff3ee8783531e2ce814f0870cb] xdp: page_pool related fix to cpumap testing commit 6bf071bf09d4b2ff3ee8783531e2ce814f0870cb with gcc (GCC) 8.4.1 20210217 kernel signature: 71ef355a54ed114b24356658c02e97eabb6434b3d57fa6a96f568d0708b7e1ca 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 6bf071bf09d4b2ff3ee8783531e2ce814f0870cb Bisecting: 8 revisions left to test after this (roughly 3 steps) [dcc5e1f9cad0e31198c4a4254981928299b49054] selftests: tc: add ingress device matching support testing commit dcc5e1f9cad0e31198c4a4254981928299b49054 with gcc (GCC) 8.4.1 20210217 kernel signature: 612b8c2998cc59c181d4d1d6d7d9d4b2ad3225a6f5d7228156dc7bfcc7d10e7e all runs: OK # git bisect good dcc5e1f9cad0e31198c4a4254981928299b49054 Bisecting: 4 revisions left to test after this (roughly 2 steps) [39e3622edeffa63c2871153d8743c5825b139968] net: netsec: initialize tx ring on ndo_open testing commit 39e3622edeffa63c2871153d8743c5825b139968 with gcc (GCC) 8.4.1 20210217 kernel signature: 612b8c2998cc59c181d4d1d6d7d9d4b2ad3225a6f5d7228156dc7bfcc7d10e7e all runs: OK # git bisect good 39e3622edeffa63c2871153d8743c5825b139968 Bisecting: 2 revisions left to test after this (roughly 1 step) [0afdeeed08b5f59148069e9f7a52d2ab0eba5d49] net: page_pool: add helper function to retrieve dma addresses testing commit 0afdeeed08b5f59148069e9f7a52d2ab0eba5d49 with gcc (GCC) 8.4.1 20210217 kernel signature: 7023004f3ab43b757852ec0cdf7b27741f8f21e39622157c3e51da26bffd4a7a failed: failed to create VM pool: failed to create GCE image: create image operation failed: &{Code:PERMISSIONS_ERROR Location: Message:Required 'read' permission for 'disks/ci-upstream-kasan-gce-root-bisect-job-bisect-job-image.tar.gz' ForceSendFields:[] NullFields:[]}. # git bisect skip 0afdeeed08b5f59148069e9f7a52d2ab0eba5d49 Bisecting: 2 revisions left to test after this (roughly 1 step) [a25d50bfe645b3ed6b2cb3773e7025db14a608f3] net: page_pool: add helper function to unmap dma addresses testing commit a25d50bfe645b3ed6b2cb3773e7025db14a608f3 with gcc (GCC) 8.4.1 20210217 kernel signature: 03d72b9a69e247cbeeff095b83d7086ab414b7d35b1a10d69011194ea8d3bcb9 all runs: OK # git bisect good a25d50bfe645b3ed6b2cb3773e7025db14a608f3 Bisecting: 0 revisions left to test after this (roughly 0 steps) [516a7593fda6f20a04988e988725a182644f67b4] xdp: fix leak of IDA cyclic id if rhashtable_insert_slow fails testing commit 516a7593fda6f20a04988e988725a182644f67b4 with gcc (GCC) 8.4.1 20210217 kernel signature: 093e5073938fce8896092403f78269e3c7a2660a7ac22cb2849e663f4d6e2acb all runs: OK # git bisect good 516a7593fda6f20a04988e988725a182644f67b4 6bf071bf09d4b2ff3ee8783531e2ce814f0870cb is the first bad commit commit 6bf071bf09d4b2ff3ee8783531e2ce814f0870cb Author: Jesper Dangaard Brouer Date: Tue Jun 18 15:05:27 2019 +0200 xdp: page_pool related fix to cpumap When converting an xdp_frame into an SKB, and sending this into the network stack, then the underlying XDP memory model need to release associated resources, because the network stack don't have callbacks for XDP memory models. The only memory model that needs this is page_pool, when a driver use the DMA-mapping feature. Introduce page_pool_release_page(), which basically does the same as page_pool_unmap_page(). Add xdp_release_frame() as the XDP memory model interface for calling it, if the memory model match MEM_TYPE_PAGE_POOL, to save the function call overhead for others. Have cpumap call xdp_release_frame() before xdp_scrub_frame(). Signed-off-by: Jesper Dangaard Brouer Signed-off-by: David S. Miller include/net/page_pool.h | 15 ++++++++++++++- include/net/xdp.h | 15 +++++++++++++++ kernel/bpf/cpumap.c | 3 +++ net/core/xdp.c | 15 +++++++++++++++ 4 files changed, 47 insertions(+), 1 deletion(-) culprit signature: 71ef355a54ed114b24356658c02e97eabb6434b3d57fa6a96f568d0708b7e1ca parent signature: 093e5073938fce8896092403f78269e3c7a2660a7ac22cb2849e663f4d6e2acb Reproducer flagged being flaky revisions tested: 27, total time: 6h29m49.463822335s (build: 3h0m29.844637139s, test: 3h25m24.413593088s) first bad commit: 6bf071bf09d4b2ff3ee8783531e2ce814f0870cb xdp: page_pool related fix to cpumap recipients (to): ["brouer@redhat.com" "davem@davemloft.net" "davem@davemloft.net" "netdev@vger.kernel.org"] recipients (cc): ["ast@kernel.org" "bpf@vger.kernel.org" "daniel@iogearbox.net" "hawk@kernel.org" "jakub.kicinski@netronome.com" "john.fastabend@gmail.com" "kafai@fb.com" "linux-kernel@vger.kernel.org" "songliubraving@fb.com" "xdp-newbies@vger.kernel.org" "yhs@fb.com"] 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: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.2.0-rc5-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:ffff8880b3eafac0 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: ffff88809d4c9680 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff8880b3eafbd8 R08: ffff88809d4c9680 R09: 0000000000000001 R10: ffffed10167d5f8f R11: 0000000000000003 R12: ffff88809d4c9680 R13: dffffc0000000000 R14: ffff888096becc80 R15: 000000000000003c FS: 0000000000000000(0000) GS:ffff8880ba300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000b3af4000 CR4: 0000000000340ee0 Call Trace: batadv_iv_ogm_schedule+0xb47/0xe80 net/batman-adv/bat_iv_ogm.c:807 batadv_iv_send_outstanding_bat_ogm_packet+0x4a2/0x790 net/batman-adv/bat_iv_ogm.c:1669 process_one_work+0x7b9/0x15e0 kernel/workqueue.c:2269 worker_thread+0x85/0xb60 kernel/workqueue.c:2415 kthread+0x324/0x3e0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace 0a58a485f4bc52f0 ]--- 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:ffff8880b3eafac0 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: ffff88809d4c9680 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: ffff8880b3eafbd8 R08: ffff88809d4c9680 R09: 0000000000000001 R10: ffffed10167d5f8f R11: 0000000000000003 R12: ffff88809d4c9680 R13: dffffc0000000000 R14: ffff888096becc80 R15: 000000000000003c FS: 0000000000000000(0000) GS:ffff8880ba300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000b3af4000 CR4: 0000000000340ee0