================================================================== BUG: KCSAN: data-race in clockevents_program_event / print_tickdevice write to 0xffff888237d1bf18 of 8 bytes by interrupt on cpu 1: clockevents_program_event+0x34/0x1d0 kernel/time/clockevents.c:313 tick_program_event+0x7c/0xc0 kernel/time/tick-oneshot.c:44 hrtimer_interrupt+0x251/0x7b0 kernel/time/hrtimer.c:1824 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline] __sysvec_apic_timer_interrupt+0x73/0x210 arch/x86/kernel/apic/apic.c:1113 sysvec_apic_timer_interrupt+0x68/0x80 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 check_access kernel/kcsan/core.c:778 [inline] __tsan_read1+0x119/0x180 kernel/kcsan/core.c:1013 gf128mul_4k_lle+0x87/0xf0 lib/crypto/gf128mul.c:414 ghash_update+0x304/0x4d0 crypto/ghash-generic.c:101 crypto_shash_update crypto/shash.c:121 [inline] shash_ahash_update+0x18d/0x230 crypto/shash.c:264 shash_async_update+0x19/0x20 crypto/shash.c:272 crypto_ahash_update include/crypto/hash.h:557 [inline] gcm_hash_update crypto/gcm.c:213 [inline] gcm_hash_assoc_remain_continue+0x12a/0x2c0 crypto/gcm.c:321 gcm_hash_init_continue+0x15d/0x2d0 gcm_hash crypto/gcm.c:406 [inline] gcm_encrypt_continue crypto/gcm.c:431 [inline] crypto_gcm_encrypt+0x3a0/0x3c0 crypto/gcm.c:460 crypto_aead_encrypt+0x59/0x70 crypto/aead.c:94 tls_do_encryption net/tls/tls_sw.c:544 [inline] tls_push_record+0x11d9/0x15e0 net/tls/tls_sw.c:777 bpf_exec_tx_verdict+0x6a1/0xb00 net/tls/tls_sw.c:817 tls_sw_do_sendpage+0x6d3/0x9d0 net/tls/tls_sw.c:1233 tls_sw_sendpage+0xb0/0xe0 net/tls/tls_sw.c:1299 inet_sendpage+0x83/0xc0 net/ipv4/af_inet.c:842 kernel_sendpage+0x192/0x320 net/socket.c:3580 sock_sendpage+0x5e/0xa0 net/socket.c:1080 pipe_to_sendpage+0x12e/0x160 fs/splice.c:454 splice_from_pipe_feed fs/splice.c:508 [inline] __splice_from_pipe+0x200/0x4a0 fs/splice.c:652 splice_from_pipe fs/splice.c:687 [inline] generic_splice_sendpage+0x9a/0xd0 fs/splice.c:835 do_splice_from fs/splice.c:856 [inline] direct_splice_actor+0x84/0xa0 fs/splice.c:1022 splice_direct_to_actor+0x2ee/0x5f0 fs/splice.c:977 do_splice_direct+0x104/0x180 fs/splice.c:1065 do_sendfile+0x3b8/0x950 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff888237d1bf18 of 8 bytes by task 7646 on cpu 0: print_tickdevice+0x144/0x340 kernel/time/timer_list.c:204 timer_list_show+0x79/0x180 kernel/time/timer_list.c:296 seq_read_iter+0x612/0x8f0 fs/seq_file.c:272 proc_reg_read_iter+0x10e/0x180 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:1845 [inline] generic_file_splice_read+0xe3/0x290 fs/splice.c:402 do_splice_to fs/splice.c:885 [inline] splice_direct_to_actor+0x25a/0x5f0 fs/splice.c:956 do_splice_direct+0x104/0x180 fs/splice.c:1065 do_sendfile+0x3b8/0x950 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x7fffffffffffffff -> 0x000000341a622704 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 7646 Comm: syz-executor.3 Not tainted 6.3.0-syzkaller-00113-g1a0beef98b58 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 ==================================================================