general protection fault, probably for non-canonical address 0xdffffc0000000027: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000138-0x000000000000013f] CPU: 1 PID: 9089 Comm: syz-executor.0 Not tainted 5.15.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hctx_lock+0x22/0x150 block/blk-mq.c:731 Code: 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 54 55 48 89 f5 53 48 89 fb 48 81 c7 38 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 19 01 00 00 f6 83 38 01 00 00 20 75 65 48 b8 00 RSP: 0018:ffffc9000d1af140 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000027 RSI: ffffc9000d1af180 RDI: 0000000000000138 RBP: ffffc9000d1af180 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed10031b04e9 R11: 00000000000001c9 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff88814668eee0 R15: 0000000000000148 FS: 00007f53c0ec3700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe60ae7720 CR3: 0000000073557000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: blk_mq_run_hw_queue+0x71/0x290 block/blk-mq.c:1646 blk_mq_submit_bio+0x10a7/0x17f0 block/blk-mq.c:2282 __submit_bio_noacct_mq block/blk-core.c:1001 [inline] submit_bio_noacct block/blk-core.c:1034 [inline] submit_bio_noacct+0x91b/0xdb0 block/blk-core.c:1017 submit_bio+0xcc/0x3a0 block/blk-core.c:1096 submit_bio_wait+0x100/0x200 block/bio.c:1248 blkdev_issue_flush+0xc0/0x110 block/blk-flush.c:458 blkdev_fsync+0x74/0xa0 block/fops.c:421 generic_write_sync include/linux/fs.h:2955 [inline] blkdev_write_iter+0x312/0x4a0 block/fops.c:521 call_write_iter include/linux/fs.h:2163 [inline] do_iter_readv_writev+0x336/0x6d0 fs/read_write.c:729 do_iter_write+0x12a/0x620 fs/read_write.c:855 iter_file_splice_write+0x598/0xaf0 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0xfb/0x1c0 fs/splice.c:936 splice_direct_to_actor+0x2dd/0x7c0 fs/splice.c:891 do_splice_direct+0x154/0x260 fs/splice.c:979 do_sendfile+0x91e/0x1120 fs/read_write.c:1249 __do_sys_sendfile64 fs/read_write.c:1314 [inline] __se_sys_sendfile64 fs/read_write.c:1300 [inline] __x64_sys_sendfile64+0x186/0x1d0 fs/read_write.c:1300 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f53c176ea39 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f53c0ec3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f53c1872020 RCX: 00007f53c176ea39 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007f53c17c8c5f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000024002da8 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffca138dfcf R14: 00007f53c0ec3300 R15: 0000000000022000 Modules linked in: ---[ end trace cf369608f92e0471 ]--- RIP: 0010:hctx_lock+0x22/0x150 block/blk-mq.c:731 Code: 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 41 54 55 48 89 f5 53 48 89 fb 48 81 c7 38 01 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 19 01 00 00 f6 83 38 01 00 00 20 75 65 48 b8 00 RSP: 0018:ffffc9000d1af140 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000027 RSI: ffffc9000d1af180 RDI: 0000000000000138 RBP: ffffc9000d1af180 R08: 0000000000000001 R09: 0000000000000001 R10: ffffed10031b04e9 R11: 00000000000001c9 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff88814668eee0 R15: 0000000000000148 FS: 00007f53c0ec3700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555565b5708 CR3: 0000000073557000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 7: 00 8: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax f: fc ff df 12: 41 54 push %r12 14: 55 push %rbp 15: 48 89 f5 mov %rsi,%rbp 18: 53 push %rbx 19: 48 89 fb mov %rdi,%rbx 1c: 48 81 c7 38 01 00 00 add $0x138,%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 19 01 00 00 jne 0x14d 34: f6 83 38 01 00 00 20 testb $0x20,0x138(%rbx) 3b: 75 65 jne 0xa2 3d: 48 rex.W 3e: b8 .byte 0xb8