Warning: Permanently added '10.128.0.119' (ECDSA) to the list of known hosts. 2020/06/26 08:36:04 fuzzer started 2020/06/26 08:36:05 dialing manager at 10.128.0.105:35577 2020/06/26 08:36:06 syscalls: 3105 2020/06/26 08:36:06 code coverage: enabled 2020/06/26 08:36:06 comparison tracing: enabled 2020/06/26 08:36:06 extra coverage: enabled 2020/06/26 08:36:06 setuid sandbox: enabled 2020/06/26 08:36:06 namespace sandbox: enabled 2020/06/26 08:36:06 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/26 08:36:06 fault injection: enabled 2020/06/26 08:36:06 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/26 08:36:06 net packet injection: enabled 2020/06/26 08:36:06 net device setup: enabled 2020/06/26 08:36:06 concurrency sanitizer: enabled 2020/06/26 08:36:06 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/26 08:36:06 USB emulation: enabled 2020/06/26 08:36:07 suppressing KCSAN reports in functions: 'generic_write_end' 'do_epoll_wait' 'blk_mq_dispatch_rq_list' 'ext4_free_inodes_count' 'blk_mq_rq_ctx_init' 'ext4_free_inode' '__xa_clear_mark' '__ext4_new_inode' 'ext4_mark_iloc_dirty' '__delayacct_blkio_end' 'find_get_pages_range_tag' 'n_tty_receive_buf_common' 'copy_process' 'futex_wait_queue_me' [ 44.672867][ T8627] ================================================================== [ 44.680950][ T8627] BUG: KCSAN: data-race in __mod_timer / timer_clear_idle [ 44.688023][ T8627] [ 44.690327][ T8627] write to 0xffff88812c01cb24 of 1 bytes by task 0 on cpu 0: [ 44.697662][ T8627] timer_clear_idle+0x2e/0x40 [ 44.702306][ T8627] tick_nohz_idle_retain_tick+0x3e/0x40 [ 44.707949][ T8627] do_idle+0x290/0x320 [ 44.711985][ T8627] cpu_startup_entry+0x15/0x20 [ 44.716714][ T8627] rest_init+0xd8/0xe0 [ 44.720752][ T8627] arch_call_rest_init+0xa/0xb [ 44.725479][ T8627] start_kernel+0x608/0x6d0 [ 44.730040][ T8627] secondary_startup_64+0xa4/0xb0 [ 44.735022][ T8627] [ 44.737318][ T8627] read to 0xffff88812c01cb24 of 1 bytes by task 8627 on cpu 1: [ 44.744867][ T8627] __mod_timer+0xb87/0xf00 [ 44.749371][ T8627] mod_timer+0x1b/0x20 [ 44.753408][ T8627] sk_reset_timer+0x1f/0xa0 [ 44.757891][ T8627] tcp_rearm_rto+0x204/0x210 [ 44.762451][ T8627] tcp_write_xmit+0x1bee/0x3f30 [ 44.767275][ T8627] __tcp_push_pending_frames+0x68/0x1c0 [ 44.772786][ T8627] tcp_push+0x2c4/0x2e0 [ 44.776909][ T8627] tcp_sendmsg_locked+0x1b90/0x2180 [ 44.782075][ T8627] tcp_sendmsg+0x2c/0x40 [ 44.786283][ T8627] inet_sendmsg+0x5f/0x80 [ 44.790578][ T8627] sock_write_iter+0x1a1/0x200 [ 44.795326][ T8627] __vfs_write+0x2d8/0x340 [ 44.799706][ T8627] vfs_write+0x19b/0x350 [ 44.803915][ T8627] ksys_write+0xce/0x180 [ 44.808122][ T8627] __x64_sys_write+0x3e/0x50 [ 44.812700][ T8627] do_syscall_64+0x71/0x120 [ 44.817170][ T8627] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 44.823025][ T8627] [ 44.825329][ T8627] Reported by Kernel Concurrency Sanitizer on: [ 44.831449][ T8627] CPU: 1 PID: 8627 Comm: syz-fuzzer Not tainted 5.8.0-rc2-syzkaller #0 [ 44.839645][ T8627] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.849664][ T8627] ================================================================== [ 44.857687][ T8627] Kernel panic - not syncing: panic_on_warn set ... [ 44.864237][ T8627] CPU: 1 PID: 8627 Comm: syz-fuzzer Not tainted 5.8.0-rc2-syzkaller #0 [ 44.872434][ T8627] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.882452][ T8627] Call Trace: [ 44.885732][ T8627] dump_stack+0x10f/0x19d [ 44.890028][ T8627] panic+0x1f8/0x63a [ 44.893888][ T8627] ? vprintk_emit+0x44a/0x4f0 [ 44.898534][ T8627] kcsan_report+0x684/0x690 [ 44.903007][ T8627] ? kcsan_setup_watchpoint+0x453/0x4d0 [ 44.908515][ T8627] ? __mod_timer+0xb87/0xf00 [ 44.913074][ T8627] ? mod_timer+0x1b/0x20 [ 44.917282][ T8627] ? sk_reset_timer+0x1f/0xa0 [ 44.921927][ T8627] ? tcp_rearm_rto+0x204/0x210 [ 44.926655][ T8627] ? tcp_write_xmit+0x1bee/0x3f30 [ 44.931659][ T8627] ? __tcp_push_pending_frames+0x68/0x1c0 [ 44.937356][ T8627] ? tcp_push+0x2c4/0x2e0 [ 44.941650][ T8627] ? tcp_sendmsg_locked+0x1b90/0x2180 [ 44.946988][ T8627] ? tcp_sendmsg+0x2c/0x40 [ 44.951368][ T8627] ? inet_sendmsg+0x5f/0x80 [ 44.955837][ T8627] ? sock_write_iter+0x1a1/0x200 [ 44.960740][ T8627] ? __vfs_write+0x2d8/0x340 [ 44.965306][ T8627] ? vfs_write+0x19b/0x350 [ 44.969777][ T8627] ? ksys_write+0xce/0x180 [ 44.974157][ T8627] ? __x64_sys_write+0x3e/0x50 [ 44.978885][ T8627] ? do_syscall_64+0x71/0x120 [ 44.983525][ T8627] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 44.989573][ T8627] ? __ip_queue_xmit+0x99e/0x9c0 [ 44.994491][ T8627] ? check_preemption_disabled+0x3f/0x1a0 [ 45.000191][ T8627] kcsan_setup_watchpoint+0x453/0x4d0 [ 45.005534][ T8627] __mod_timer+0xb87/0xf00 [ 45.009920][ T8627] mod_timer+0x1b/0x20 [ 45.013958][ T8627] sk_reset_timer+0x1f/0xa0 [ 45.018431][ T8627] tcp_rearm_rto+0x204/0x210 [ 45.022989][ T8627] tcp_write_xmit+0x1bee/0x3f30 [ 45.027816][ T8627] ? check_preemption_disabled+0x8f/0x1a0 [ 45.033501][ T8627] ? iov_iter_advance+0x1e0/0x890 [ 45.038492][ T8627] ? _copy_from_iter_full+0x1d9/0x6d0 [ 45.043831][ T8627] ? __virt_addr_valid+0x15a/0x1a0 [ 45.048911][ T8627] __tcp_push_pending_frames+0x68/0x1c0 [ 45.054421][ T8627] tcp_push+0x2c4/0x2e0 [ 45.058542][ T8627] tcp_sendmsg_locked+0x1b90/0x2180 [ 45.063709][ T8627] tcp_sendmsg+0x2c/0x40 [ 45.067930][ T8627] inet_sendmsg+0x5f/0x80 [ 45.072234][ T8627] sock_write_iter+0x1a1/0x200 [ 45.076966][ T8627] __vfs_write+0x2d8/0x340 [ 45.081350][ T8627] vfs_write+0x19b/0x350 [ 45.085559][ T8627] ksys_write+0xce/0x180 [ 45.089771][ T8627] __x64_sys_write+0x3e/0x50 [ 45.094331][ T8627] do_syscall_64+0x71/0x120 [ 45.098801][ T8627] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 45.104658][ T8627] RIP: 0033:0x4b3cdb [ 45.108514][ T8627] Code: Bad RIP value. [ 45.112544][ T8627] RSP: 002b:000000c002671540 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 45.120932][ T8627] RAX: ffffffffffffffda RBX: 000000c00002e800 RCX: 00000000004b3cdb [ 45.128875][ T8627] RDX: 0000000000000007 RSI: 000000c00000a200 RDI: 0000000000000006 [ 45.136816][ T8627] RBP: 000000c002671590 R08: 000000c00000a201 R09: 0000000000000007 [ 45.144756][ T8627] R10: 000000c000114000 R11: 0000000000000202 R12: 000000000000011e [ 45.152692][ T8627] R13: 000000c000338000 R14: 0000000000000007 R15: 0000000000002b0e [ 46.257845][ T8627] Shutting down cpus with NMI [ 46.263586][ T8627] Kernel Offset: disabled [ 46.267896][ T8627] Rebooting in 86400 seconds..