bisecting fixing commit since 614cb2751d3150850d459bee596c397f344a7936 building syzkaller on a2fe1cb58994e43fb14f141ecd6e6dcce9bb697a testing commit 614cb2751d3150850d459bee596c397f344a7936 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: a3a85bce4f45999e30949326e2fab7cc4578e19f6b96ef7dbd2ad10521d11990 all runs: crashed: kernel BUG in validate_xmit_skb testing current HEAD fb3b0673b7d5b477ed104949450cd511337ba3c6 testing commit fb3b0673b7d5b477ed104949450cd511337ba3c6 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: da706467e9b3e74c25f8a1efae9138d4fd3a2c1895623bc4921c5fe26c9ea6e5 all runs: OK # git bisect start fb3b0673b7d5b477ed104949450cd511337ba3c6 614cb2751d3150850d459bee596c397f344a7936 Bisecting: 18742 revisions left to test after this (roughly 14 steps) [78805cbe5d72ad27a56962a8072edbcb45ca1180] Merge tag 'gfs2-v5.15-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 testing commit 78805cbe5d72ad27a56962a8072edbcb45ca1180 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f0ba94ceab0dd57dac0fa0b16ce19d50f95f14ec5481b4fd4f0562f46dff28f7 all runs: crashed: kernel BUG in validate_xmit_skb # git bisect good 78805cbe5d72ad27a56962a8072edbcb45ca1180 Bisecting: 9368 revisions left to test after this (roughly 13 steps) [d598c3c46ea69ea974f0613a651cd4ef3be0c870] Merge 5.16-rc4 into usb-next testing commit d598c3c46ea69ea974f0613a651cd4ef3be0c870 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 81e4fe0b7f3d56a11555c6cb1b45a02f145f8357a78be2e5bde06624575391dd all runs: OK # git bisect bad d598c3c46ea69ea974f0613a651cd4ef3be0c870 Bisecting: 4848 revisions left to test after this (roughly 12 steps) [5cd4dc44b8a0f656100e3b6916cf73b1623299eb] Merge tag 'staging-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging testing commit 5cd4dc44b8a0f656100e3b6916cf73b1623299eb compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: c25817a2628cb7482a618f2eebeb003dce954c9bbf39bdb30fb46400daaa8657 all runs: crashed: kernel BUG in validate_xmit_skb # git bisect good 5cd4dc44b8a0f656100e3b6916cf73b1623299eb Bisecting: 2442 revisions left to test after this (roughly 11 steps) [becc1fb4f3e5fb04b888dd292409736f0cddf630] Merge tag 'rpmsg-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux testing commit becc1fb4f3e5fb04b888dd292409736f0cddf630 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: abd648c34c4a2f5c17d89910b48d57571cb23f754fdae4c1dc1da00ada03e1d7 all runs: crashed: kernel BUG in validate_xmit_skb # git bisect good becc1fb4f3e5fb04b888dd292409736f0cddf630 Bisecting: 1220 revisions left to test after this (roughly 10 steps) [622c72b651c85cb55bae147debc1a2fae0189b53] Merge tag 'timers-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip testing commit 622c72b651c85cb55bae147debc1a2fae0189b53 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6c44492c75d39ae9b335dfec87e08a7bfd679fc7f3d19b61321aca6744411a5a all runs: crashed: kernel BUG in validate_xmit_skb # git bisect good 622c72b651c85cb55bae147debc1a2fae0189b53 Bisecting: 610 revisions left to test after this (roughly 9 steps) [6b54698aec0b59943f7e8a88151bdf208de990d0] Merge tag 'for-linus-5.16c-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip testing commit 6b54698aec0b59943f7e8a88151bdf208de990d0 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 4ba72ca6de2b448819202a7a232c4443145f57b93db63b6853cc17fb2e74f0c0 all runs: crashed: kernel BUG in validate_xmit_skb # git bisect good 6b54698aec0b59943f7e8a88151bdf208de990d0 Bisecting: 309 revisions left to test after this (roughly 8 steps) [58e1100fdc5990b0cc0d4beaf2562a92e621ac7d] MAINTAINERS: co-maintain random.c testing commit 58e1100fdc5990b0cc0d4beaf2562a92e621ac7d compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 68478abfbe6147363752a3f830f3750a21f8f64dab46fa0d39b8d2b7250bf62e all runs: crashed: kernel BUG in validate_xmit_skb # git bisect good 58e1100fdc5990b0cc0d4beaf2562a92e621ac7d Bisecting: 133 revisions left to test after this (roughly 7 steps) [5f58da2befa58edf3a70b91ed87ed9bf77f1e70e] Merge tag 'drm-fixes-2021-12-03-1' of git://anongit.freedesktop.org/drm/drm testing commit 5f58da2befa58edf3a70b91ed87ed9bf77f1e70e compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 9ea28054e56afa5d9c8f0b391620e1d7dd2522b21ac90444e9fffc6dfbea92f7 all runs: OK # git bisect bad 5f58da2befa58edf3a70b91ed87ed9bf77f1e70e Bisecting: 87 revisions left to test after this (roughly 7 steps) [76d001603c509562181f3787a7065b8e163bc7b9] mctp: Don't let RTM_DELROUTE delete local routes testing commit 76d001603c509562181f3787a7065b8e163bc7b9 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f68e54c40732f4ccd3414ace5276cdde918adcab33c00916d9ad6cb84ad61b44 all runs: OK # git bisect bad 76d001603c509562181f3787a7065b8e163bc7b9 Bisecting: 43 revisions left to test after this (roughly 6 steps) [4cce2ccf08fbc27ae34ce0e72db15166e7b5f6a7] net/mlx5e: Sync TIR params updates against concurrent create/modify testing commit 4cce2ccf08fbc27ae34ce0e72db15166e7b5f6a7 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 04fbf802b0f29e7438d746f5cdab87d9be1bad12ac00668ba22322d60b052d86 all runs: OK # git bisect bad 4cce2ccf08fbc27ae34ce0e72db15166e7b5f6a7 Bisecting: 21 revisions left to test after this (roughly 5 steps) [03ff1b1def73f817e196bf96ab36ac259490bd7c] wireguard: selftests: increase default dmesg log size testing commit 03ff1b1def73f817e196bf96ab36ac259490bd7c compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 15d98f8712c553828d7d368d4092b0116b425f7a085f6be810e09cd913d188da all runs: crashed: kernel BUG in validate_xmit_skb # git bisect good 03ff1b1def73f817e196bf96ab36ac259490bd7c Bisecting: 9 revisions left to test after this (roughly 4 steps) [5fdc2333e6c3e7ef8b98295024bef27f8edf9202] Merge tag 'rxrpc-fixes-20211129' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs testing commit 5fdc2333e6c3e7ef8b98295024bef27f8edf9202 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: ee93b9abcd6faa3161dbbab57562f6d9590df8f74949d8bc16b39fb3d1076e33 all runs: crashed: kernel BUG in validate_xmit_skb # git bisect good 5fdc2333e6c3e7ef8b98295024bef27f8edf9202 Bisecting: 4 revisions left to test after this (roughly 2 steps) [34d8778a943761121f391b7921f79a7adbe1feaf] MAINTAINERS: s390/net: add Alexandra and Wenjia as maintainer testing commit 34d8778a943761121f391b7921f79a7adbe1feaf compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: ee93b9abcd6faa3161dbbab57562f6d9590df8f74949d8bc16b39fb3d1076e33 run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe run #1: crashed: kernel BUG in validate_xmit_skb run #2: crashed: kernel BUG in validate_xmit_skb run #3: crashed: kernel BUG in validate_xmit_skb run #4: crashed: kernel BUG in validate_xmit_skb run #5: crashed: kernel BUG in validate_xmit_skb run #6: crashed: kernel BUG in validate_xmit_skb run #7: crashed: kernel BUG in validate_xmit_skb run #8: crashed: kernel BUG in validate_xmit_skb run #9: crashed: kernel BUG in validate_xmit_skb # git bisect good 34d8778a943761121f391b7921f79a7adbe1feaf Bisecting: 2 revisions left to test after this (roughly 1 step) [b0f38e15979fa8851e88e8aa371367f264e7b6e9] natsemi: xtensa: fix section mismatch warnings testing commit b0f38e15979fa8851e88e8aa371367f264e7b6e9 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 04fbf802b0f29e7438d746f5cdab87d9be1bad12ac00668ba22322d60b052d86 all runs: OK # git bisect bad b0f38e15979fa8851e88e8aa371367f264e7b6e9 Bisecting: 0 revisions left to test after this (roughly 0 steps) [f123cffdd8fe8ea6c7fded4b88516a42798797d0] net: netlink: af_netlink: Prevent empty skb by adding a check on len. testing commit f123cffdd8fe8ea6c7fded4b88516a42798797d0 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 04fbf802b0f29e7438d746f5cdab87d9be1bad12ac00668ba22322d60b052d86 all runs: OK # git bisect bad f123cffdd8fe8ea6c7fded4b88516a42798797d0 f123cffdd8fe8ea6c7fded4b88516a42798797d0 is the first bad commit commit f123cffdd8fe8ea6c7fded4b88516a42798797d0 Author: Harshit Mogalapalli Date: Mon Nov 29 09:53:27 2021 -0800 net: netlink: af_netlink: Prevent empty skb by adding a check on len. Adding a check on len parameter to avoid empty skb. This prevents a division error in netem_enqueue function which is caused when skb->len=0 and skb->data_len=0 in the randomized corruption step as shown below. skb->data[prandom_u32() % skb_headlen(skb)] ^= 1<<(prandom_u32() % 8); Crash Report: [ 343.170349] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 343.216110] netem: version 1.3 [ 343.235841] divide error: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 343.236680] CPU: 3 PID: 4288 Comm: reproducer Not tainted 5.16.0-rc1+ [ 343.237569] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2.el7 04/01/2014 [ 343.238707] RIP: 0010:netem_enqueue+0x1590/0x33c0 [sch_netem] [ 343.239499] Code: 89 85 58 ff ff ff e8 5f 5d e9 d3 48 8b b5 48 ff ff ff 8b 8d 50 ff ff ff 8b 85 58 ff ff ff 48 8b bd 70 ff ff ff 31 d2 2b 4f 74 f1 48 b8 00 00 00 00 00 fc ff df 49 01 d5 4c 89 e9 48 c1 e9 03 [ 343.241883] RSP: 0018:ffff88800bcd7368 EFLAGS: 00010246 [ 343.242589] RAX: 00000000ba7c0a9c RBX: 0000000000000001 RCX: 0000000000000000 [ 343.243542] RDX: 0000000000000000 RSI: ffff88800f8edb10 RDI: ffff88800f8eda40 [ 343.244474] RBP: ffff88800bcd7458 R08: 0000000000000000 R09: ffffffff94fb8445 [ 343.245403] R10: ffffffff94fb8336 R11: ffffffff94fb8445 R12: 0000000000000000 [ 343.246355] R13: ffff88800a5a7000 R14: ffff88800a5b5800 R15: 0000000000000020 [ 343.247291] FS: 00007fdde2bd7700(0000) GS:ffff888109780000(0000) knlGS:0000000000000000 [ 343.248350] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 343.249120] CR2: 00000000200000c0 CR3: 000000000ef4c000 CR4: 00000000000006e0 [ 343.250076] Call Trace: [ 343.250423] [ 343.250713] ? memcpy+0x4d/0x60 [ 343.251162] ? netem_init+0xa0/0xa0 [sch_netem] [ 343.251795] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.252443] netem_enqueue+0xe28/0x33c0 [sch_netem] [ 343.253102] ? stack_trace_save+0x87/0xb0 [ 343.253655] ? filter_irq_stacks+0xb0/0xb0 [ 343.254220] ? netem_init+0xa0/0xa0 [sch_netem] [ 343.254837] ? __kasan_check_write+0x14/0x20 [ 343.255418] ? _raw_spin_lock+0x88/0xd6 [ 343.255953] dev_qdisc_enqueue+0x50/0x180 [ 343.256508] __dev_queue_xmit+0x1a7e/0x3090 [ 343.257083] ? netdev_core_pick_tx+0x300/0x300 [ 343.257690] ? check_kcov_mode+0x10/0x40 [ 343.258219] ? _raw_spin_unlock_irqrestore+0x29/0x40 [ 343.258899] ? __kasan_init_slab_obj+0x24/0x30 [ 343.259529] ? setup_object.isra.71+0x23/0x90 [ 343.260121] ? new_slab+0x26e/0x4b0 [ 343.260609] ? kasan_poison+0x3a/0x50 [ 343.261118] ? kasan_unpoison+0x28/0x50 [ 343.261637] ? __kasan_slab_alloc+0x71/0x90 [ 343.262214] ? memcpy+0x4d/0x60 [ 343.262674] ? write_comp_data+0x2f/0x90 [ 343.263209] ? __kasan_check_write+0x14/0x20 [ 343.263802] ? __skb_clone+0x5d6/0x840 [ 343.264329] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.264958] dev_queue_xmit+0x1c/0x20 [ 343.265470] netlink_deliver_tap+0x652/0x9c0 [ 343.266067] netlink_unicast+0x5a0/0x7f0 [ 343.266608] ? netlink_attachskb+0x860/0x860 [ 343.267183] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.267820] ? write_comp_data+0x2f/0x90 [ 343.268367] netlink_sendmsg+0x922/0xe80 [ 343.268899] ? netlink_unicast+0x7f0/0x7f0 [ 343.269472] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.270099] ? write_comp_data+0x2f/0x90 [ 343.270644] ? netlink_unicast+0x7f0/0x7f0 [ 343.271210] sock_sendmsg+0x155/0x190 [ 343.271721] ____sys_sendmsg+0x75f/0x8f0 [ 343.272262] ? kernel_sendmsg+0x60/0x60 [ 343.272788] ? write_comp_data+0x2f/0x90 [ 343.273332] ? write_comp_data+0x2f/0x90 [ 343.273869] ___sys_sendmsg+0x10f/0x190 [ 343.274405] ? sendmsg_copy_msghdr+0x80/0x80 [ 343.274984] ? slab_post_alloc_hook+0x70/0x230 [ 343.275597] ? futex_wait_setup+0x240/0x240 [ 343.276175] ? security_file_alloc+0x3e/0x170 [ 343.276779] ? write_comp_data+0x2f/0x90 [ 343.277313] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.277969] ? write_comp_data+0x2f/0x90 [ 343.278515] ? __fget_files+0x1ad/0x260 [ 343.279048] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.279685] ? write_comp_data+0x2f/0x90 [ 343.280234] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.280874] ? sockfd_lookup_light+0xd1/0x190 [ 343.281481] __sys_sendmsg+0x118/0x200 [ 343.281998] ? __sys_sendmsg_sock+0x40/0x40 [ 343.282578] ? alloc_fd+0x229/0x5e0 [ 343.283070] ? write_comp_data+0x2f/0x90 [ 343.283610] ? write_comp_data+0x2f/0x90 [ 343.284135] ? __sanitizer_cov_trace_pc+0x21/0x60 [ 343.284776] ? ktime_get_coarse_real_ts64+0xb8/0xf0 [ 343.285450] __x64_sys_sendmsg+0x7d/0xc0 [ 343.285981] ? syscall_enter_from_user_mode+0x4d/0x70 [ 343.286664] do_syscall_64+0x3a/0x80 [ 343.287158] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 343.287850] RIP: 0033:0x7fdde24cf289 [ 343.288344] Code: 01 00 48 81 c4 80 00 00 00 e9 f1 fe ff ff 0f 1f 00 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 73 01 c3 48 8b 0d b7 db 2c 00 f7 d8 64 89 01 48 [ 343.290729] RSP: 002b:00007fdde2bd6d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 343.291730] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdde24cf289 [ 343.292673] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000004 [ 343.293618] RBP: 00007fdde2bd6e20 R08: 0000000100000001 R09: 0000000000000000 [ 343.294557] R10: 0000000100000001 R11: 0000000000000246 R12: 0000000000000000 [ 343.295493] R13: 0000000000021000 R14: 0000000000000000 R15: 00007fdde2bd7700 [ 343.296432] [ 343.296735] Modules linked in: sch_netem ip6_vti ip_vti ip_gre ipip sit ip_tunnel geneve macsec macvtap tap ipvlan macvlan 8021q garp mrp hsr wireguard libchacha20poly1305 chacha_x86_64 poly1305_x86_64 ip6_udp_tunnel udp_tunnel libblake2s blake2s_x86_64 libblake2s_generic curve25519_x86_64 libcurve25519_generic libchacha xfrm_interface xfrm6_tunnel tunnel4 veth netdevsim psample batman_adv nlmon dummy team bonding tls vcan ip6_gre ip6_tunnel tunnel6 gre tun ip6t_rpfilter ipt_REJECT nf_reject_ipv4 ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_security ip6table_raw iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_security iptable_raw ebtable_filter ebtables rfkill ip6table_filter ip6_tables iptable_filter ppdev bochs drm_vram_helper drm_ttm_helper ttm drm_kms_helper cec parport_pc drm joydev floppy parport sg syscopyarea sysfillrect sysimgblt i2c_piix4 qemu_fw_cfg fb_sys_fops pcspkr [ 343.297459] ip_tables xfs virtio_net net_failover failover sd_mod sr_mod cdrom t10_pi ata_generic pata_acpi ata_piix libata virtio_pci virtio_pci_legacy_dev serio_raw virtio_pci_modern_dev dm_mirror dm_region_hash dm_log dm_mod [ 343.311074] Dumping ftrace buffer: [ 343.311532] (ftrace buffer empty) [ 343.312040] ---[ end trace a2e3db5a6ae05099 ]--- [ 343.312691] RIP: 0010:netem_enqueue+0x1590/0x33c0 [sch_netem] [ 343.313481] Code: 89 85 58 ff ff ff e8 5f 5d e9 d3 48 8b b5 48 ff ff ff 8b 8d 50 ff ff ff 8b 85 58 ff ff ff 48 8b bd 70 ff ff ff 31 d2 2b 4f 74 f1 48 b8 00 00 00 00 00 fc ff df 49 01 d5 4c 89 e9 48 c1 e9 03 [ 343.315893] RSP: 0018:ffff88800bcd7368 EFLAGS: 00010246 [ 343.316622] RAX: 00000000ba7c0a9c RBX: 0000000000000001 RCX: 0000000000000000 [ 343.317585] RDX: 0000000000000000 RSI: ffff88800f8edb10 RDI: ffff88800f8eda40 [ 343.318549] RBP: ffff88800bcd7458 R08: 0000000000000000 R09: ffffffff94fb8445 [ 343.319503] R10: ffffffff94fb8336 R11: ffffffff94fb8445 R12: 0000000000000000 [ 343.320455] R13: ffff88800a5a7000 R14: ffff88800a5b5800 R15: 0000000000000020 [ 343.321414] FS: 00007fdde2bd7700(0000) GS:ffff888109780000(0000) knlGS:0000000000000000 [ 343.322489] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 343.323283] CR2: 00000000200000c0 CR3: 000000000ef4c000 CR4: 00000000000006e0 [ 343.324264] Kernel panic - not syncing: Fatal exception in interrupt [ 343.333717] Dumping ftrace buffer: [ 343.334175] (ftrace buffer empty) [ 343.334653] Kernel Offset: 0x13600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 343.336027] Rebooting in 86400 seconds.. Reported-by: syzkaller Signed-off-by: Harshit Mogalapalli Link: https://lore.kernel.org/r/20211129175328.55339-1-harshit.m.mogalapalli@oracle.com Signed-off-by: Jakub Kicinski net/netlink/af_netlink.c | 5 +++++ 1 file changed, 5 insertions(+) culprit signature: 04fbf802b0f29e7438d746f5cdab87d9be1bad12ac00668ba22322d60b052d86 parent signature: ee93b9abcd6faa3161dbbab57562f6d9590df8f74949d8bc16b39fb3d1076e33 revisions tested: 17, total time: 4h20m32.844457959s (build: 1h51m5.25843875s, test: 2h27m32.691007316s) first good commit: f123cffdd8fe8ea6c7fded4b88516a42798797d0 net: netlink: af_netlink: Prevent empty skb by adding a check on len. recipients (to): ["davem@davemloft.net" "harshit.m.mogalapalli@oracle.com" "kuba@kernel.org" "kuba@kernel.org" "netdev@vger.kernel.org"] recipients (cc): ["edumazet@google.com" "fw@strlen.de" "linux-kernel@vger.kernel.org"]