kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 22744 Comm: syz-executor.1 Not tainted 5.3.0-rc5+ #137 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:relay_close_buf+0x28/0x150 kernel/relay.c:495 Code: 00 00 55 48 89 e5 41 54 49 89 fc 53 e8 71 1d ff ff 49 8d bc 24 ac 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d9 RSP: 0018:ffff888050ed7920 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffffc90014647000 RDX: 0000000020000015 RSI: ffffffff8173548f RDI: 00000001000000aa RBP: ffff888050ed7930 R08: ffff8880599a24c0 R09: ffffed100a1daefb R10: ffffed100a1daefa R11: 0000000000000003 R12: 00000000fffffffe R13: ffff8880a3fc3080 R14: 0000000000000007 R15: 00000000fffffffe FS: 00007f020b23b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020b6dfc8 CR3: 000000005b262000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: relay_open kernel/relay.c:612 [inline] relay_open+0x619/0x980 kernel/relay.c:563 do_blk_trace_setup+0x3f0/0xb50 kernel/trace/blktrace.c:526 __blk_trace_setup+0xe3/0x190 kernel/trace/blktrace.c:571 blk_trace_ioctl+0x170/0x300 kernel/trace/blktrace.c:710 blkdev_ioctl+0x126/0x1c1a block/ioctl.c:592 block_ioctl+0xee/0x130 fs/block_dev.c:1954 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459829 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f020b23ac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829 RDX: 0000000020000080 RSI: 00000000c0481273 RDI: 0000000000000005 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f020b23b6d4 R13: 00000000004c0ed9 R14: 00000000004d40b0 R15: 00000000ffffffff Modules linked in: ---[ end trace 5410df17bcaa199c ]--- RIP: 0010:relay_close_buf+0x28/0x150 kernel/relay.c:495 Code: 00 00 55 48 89 e5 41 54 49 89 fc 53 e8 71 1d ff ff 49 8d bc 24 ac 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 d9 RSP: 0018:ffff888050ed7920 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: ffffc90014647000 RDX: 0000000020000015 RSI: ffffffff8173548f RDI: 00000001000000aa RBP: ffff888050ed7930 R08: ffff8880599a24c0 R09: ffffed100a1daefb R10: ffffed100a1daefa R11: 0000000000000003 R12: 00000000fffffffe R13: ffff8880a3fc3080 R14: 0000000000000007 R15: 00000000fffffffe FS: 00007f020b23b700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000075c000 CR3: 000000005b262000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400