================================================================== BUG: KASAN: global-out-of-bounds in show_timer+0x278/0x2b0 fs/proc/base.c:2274 Read of size 8 at addr ffffffff85342a38 by task syzkaller248656/3079 CPU: 0 PID: 3079 Comm: syzkaller248656 Not tainted 4.15.0-rc1+ #115 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x257 lib/dump_stack.c:53 print_address_description+0x178/0x250 mm/kasan/report.c:252 kasan_report_error mm/kasan/report.c:351 [inline] kasan_report+0x25b/0x340 mm/kasan/report.c:409 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430 show_timer+0x278/0x2b0 fs/proc/base.c:2274 traverse+0x248/0xa00 fs/seq_file.c:111 seq_read+0x96a/0x13d0 fs/seq_file.c:189 do_loop_readv_writev fs/read_write.c:673 [inline] do_iter_read+0x3db/0x5b0 fs/read_write.c:897 vfs_readv+0x121/0x1c0 fs/read_write.c:959 kernel_readv fs/splice.c:361 [inline] default_file_splice_read+0x508/0xae0 fs/splice.c:416 do_splice_to+0x110/0x170 fs/splice.c:880 splice_direct_to_actor+0x242/0x820 fs/splice.c:952 do_splice_direct+0x2a7/0x3d0 fs/splice.c:1061 do_sendfile+0x5d5/0xe90 fs/read_write.c:1413 C_SYSC_sendfile fs/read_write.c:1489 [inline] compat_SyS_sendfile+0xea/0x1a0 fs/read_write.c:1478 do_syscall_32_irqs_on arch/x86/entry/common.c:327 [inline] do_fast_syscall_32+0x3ee/0xf9d arch/x86/entry/common.c:389 entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:125 RIP: 0023:0xf7f2fc79 RSP: 002b:00000000ffd3be3c EFLAGS: 00000296 ORIG_RAX: 00000000000000bb RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000003 RDX: 0000000020480ff8 RSI: 00000000000000ff RDI: 0000000000000002 RBP: 0000000020593000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to the variable: nstr.44443+0x18/0x40 Memory state around the buggy address: ffffffff85342900: fa fa fa fa 00 06 fa fa fa fa fa fa 07 fa fa fa ffffffff85342980: fa fa fa fa 05 fa fa fa fa fa fa fa 07 fa fa fa >ffffffff85342a00: fa fa fa fa 00 00 00 fa fa fa fa fa 00 fa fa fa ^ ffffffff85342a80: fa fa fa fa 07 fa fa fa fa fa fa fa 00 00 00 00 ffffffff85342b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================