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================================================================== BUG: KCSAN: data-race in tcp_chrono_stop / tcp_recvmsg write to 0xffff888126b006a4 of 2 bytes by interrupt on cpu 0: tcp_chrono_set net/ipv4/tcp_output.c:2309 [inline] tcp_chrono_stop+0x14c/0x280 net/ipv4/tcp_output.c:2338 tcp_write_xmit+0xb1c/0x3120 net/ipv4/tcp_output.c:2459 tcp_tsq_write.part.0+0xec/0x160 net/ipv4/tcp_output.c:799 tcp_tsq_write net/ipv4/tcp_output.c:788 [inline] tcp_tsq_handler+0x85/0xe0 net/ipv4/tcp_output.c:808 tcp_tasklet_func+0x27a/0x2e0 net/ipv4/tcp_output.c:840 tasklet_action_common.isra.0+0x86/0x150 kernel/softirq.c:523 tasklet_action+0x28/0x30 kernel/softirq.c:541 __do_softirq+0x115/0x33f kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0xbb/0xe0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] do_IRQ+0xa6/0x180 arch/x86/kernel/irq.c:263 ret_from_intr+0x0/0x19 arch_local_irq_restore arch/x86/include/asm/paravirt.h:756 [inline] kcsan_setup_watchpoint+0x205/0x410 kernel/kcsan/core.c:369 check_access kernel/kcsan/core.c:409 [inline] __tsan_read8+0x145/0x1f0 kernel/kcsan/core.c:530 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline] batadv_nc_worker+0xbc/0x390 net/batman-adv/network-coding.c:718 process_one_work+0x3d4/0x890 kernel/workqueue.c:2269 worker_thread+0xa0/0x800 kernel/workqueue.c:2415 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 read to 0xffff888126b006a5 of 1 bytes by task 8125 on cpu 1: tcp_recvmsg+0x793/0x1b40 net/ipv4/tcp.c:2189 inet_recvmsg+0xbb/0x250 net/ipv4/af_inet.c:838 sock_recvmsg_nosec net/socket.c:871 [inline] sock_recvmsg net/socket.c:889 [inline] sock_recvmsg+0x92/0xb0 net/socket.c:885 sock_read_iter+0x15f/0x1e0 net/socket.c:967 call_read_iter include/linux/fs.h:1889 [inline] new_sync_read+0x389/0x4f0 fs/read_write.c:414 __vfs_read+0xb1/0xc0 fs/read_write.c:427 vfs_read fs/read_write.c:461 [inline] vfs_read+0x143/0x2c0 fs/read_write.c:446 ksys_read+0xd5/0x1b0 fs/read_write.c:587 __do_sys_read fs/read_write.c:597 [inline] __se_sys_read fs/read_write.c:595 [inline] __x64_sys_read+0x4c/0x60 fs/read_write.c:595 do_syscall_64+0xcc/0x370 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 8125 Comm: sshd Not tainted 5.4.0-rc6+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019/11/08 03:41 | https://github.com/google/ktsan.git kcsan | 94c006602e13 | f39aff9e | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/11/04 01:07 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | b35fad31 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2019/10/29 01:31 | https://github.com/google/ktsan.git kcsan | 05f2236801fe | 439d7b14 | .config | console log | report | ci2-upstream-kcsan-gce |