general protection fault in relay_switch

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	general protection fault in relay_switch_subbuf				2	1485d	1578d	0/1	auto-closed as invalid on 2020/07/25 03:12
upstream	KASAN: use-after-free Read in relay_switch_subbuf block trace	C	done	error	93	538d	2032d	0/26	auto-obsoleted due to no activity on 2023/04/20 06:56
upstream	general protection fault in relay_switch_subbuf block trace				4	1912d	1884d	0/26	auto-closed as invalid on 2019/07/23 22:29
upstream	general protection fault in relay_switch_subbuf (2) block trace				1	1725d	1716d	0/26	auto-closed as invalid on 2019/10/25 14:11
linux-5.15	KASAN: use-after-free Read in relay_switch_subbuf				2	352d	372d	0/3	auto-obsoleted due to no activity on 2023/08/23 09:04
linux-4.19	general protection fault in relay_switch_subbuf				1	1707d	1707d	0/1	auto-closed as invalid on 2019/12/15 08:14
linux-4.19	general protection fault in relay_switch_subbuf (2)				1	1404d	1404d	0/1	auto-closed as invalid on 2020/10/13 07:52
linux-4.19	KASAN: use-after-free Read in relay_switch_subbuf (2)				23	432d	915d	0/1	upstream: reported on 2021/10/17 18:33

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: 28948 Comm: syz-executor.2 Not tainted 5.4.0-rc5+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:relay_switch_subbuf+0x216/0x920 kernel/relay.c:755 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bc 06 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 7b 58 49 8d 7f 50 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7d 06 00 00 48 ba 00 00 00 00 00 fc ff df 49 8b RSP: 0018:ffff88804ad37990 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8880904a6040 RCX: ffffc9000a37f000 RDX: 000000000000000a RSI: ffffffff8173d3de RDI: 0000000000000050 RBP: ffff88804ad379e8 R08: ffff888098fee200 R09: fffffbfff11fc409 R10: ffff88804ad379e8 R11: ffffffff88fe2047 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888099074800 R15: 0000000000000000 FS: 00007f5212dae700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f442abb0518 CR3: 00000000a0f60000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: relay_flush kernel/relay.c:883 [inline] relay_flush+0x1c4/0x280 kernel/relay.c:867 __blk_trace_startstop.isra.0+0x216/0x630 kernel/trace/blktrace.c:662 blk_trace_ioctl+0x1c6/0x300 kernel/trace/blktrace.c:722 blkdev_ioctl+0x126/0x1c20 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+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459f49 Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f5212dadc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459f49 RDX: 0000000000000000 RSI: 0000000000001275 RDI: 0000000000000004 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5212dae6d4 R13: 00000000004c1801 R14: 00000000004d52a8 R15: 00000000ffffffff Modules linked in: ---[ end trace 293341f9fae13bfb ]--- RIP: 0010:relay_switch_subbuf+0x216/0x920 kernel/relay.c:755 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 bc 06 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 7b 58 49 8d 7f 50 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7d 06 00 00 48 ba 00 00 00 00 00 fc ff df 49 8b RSP: 0018:ffff88804ad37990 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8880904a6040 RCX: ffffc9000a37f000 RDX: 000000000000000a RSI: ffffffff8173d3de RDI: 0000000000000050 RBP: ffff88804ad379e8 R08: ffff888098fee200 R09: fffffbfff11fc409 R10: ffff88804ad379e8 R11: ffffffff88fe2047 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888099074800 R15: 0000000000000000 FS: 00007f5212dae700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000a0f60000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400