ci2 starts bisection 2023-03-31 03:35:22.515762705 +0000 UTC m=+151623.529421701
bisecting fixing commit since a962b54e162c2977ff37905726cab29728380835
building syzkaller on feb5635181eb12a6e3516172a3f5af06a3bc93e1
ensuring issue is reproducible on original commit a962b54e162c2977ff37905726cab29728380835

testing commit a962b54e162c2977ff37905726cab29728380835 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: accdf898997b64e9b4df6349001a83893f5b614ffcb91e24f66eb03cac9ea155
all runs: crashed: general protection fault in dtInsertEntry
testing current HEAD 62bad54b26db8bc98e28749cd76b2d890edb4258
testing commit 62bad54b26db8bc98e28749cd76b2d890edb4258 gcc
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 7d12cf1c0276a53e4d559f3dd370c9429a437743747cc727fce164a00bf0b51d
all runs: crashed: general protection fault in dtInsertEntry
revisions tested: 2, total time: 40m16.785863718s (build: 32m10.143670854s, test: 6m49.19284646s)
the crash still happens on HEAD
commit msg: Merge tag 'dma-mapping-6.3-2023-03-31' of git://git.infradead.org/users/hch/dma-mapping
crash: general protection fault in dtInsertEntry
loop0: detected capacity change from 0 to 32768
general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 5611 Comm: syz-executor.0 Not tainted 6.3.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:dtInsertEntry+0xd58/0x1880
Code: 00 00 0f b6 04 10 84 c0 0f 85 5c 07 00 00 4c 8b 6c 24 78 41 f6 45 00 02 48 8b 4c 24 18 75 1e 49 83 c4 08 4c 89 e0 48 c1 e8 03 <0f> b6 04 10 84 c0 0f 85 d2 09 00 00 41 c6 04 24 ff eb 22 48 8b 9c
RSP: 0018:ffffc9000463f080 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffffc9000463f640 RCX: ffff888072cbb130
RDX: dffffc0000000000 RSI: ffff8880714df840 RDI: ffff888072cbb14e
RBP: ffffc9000463f230 R08: 000000000000000d R09: fffffbfff175b085
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008
R13: ffff888072cbb140 R14: ffffc9000463f600 R15: 0000000000000002
FS:  00007f4d2fd7d700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4d2edad0b0 CR3: 000000001c171000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dtInsert+0x946/0x6c80
 jfs_create+0x5ec/0x970
 path_openat+0xedd/0x2b80
 do_filp_open+0x25f/0x4b0
 do_sys_openat2+0x100/0x420
 __x64_sys_openat+0x20d/0x260
 do_syscall_64+0x41/0xc0
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4d2ec8a5a9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4d2fd7d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f4d2edabf80 RCX: 00007f4d2ec8a5a9
RDX: 000000000000275a RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f4d2ece5580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd4f333b1f R14: 00007f4d2fd7d300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dtInsertEntry+0xd58/0x1880
Code: 00 00 0f b6 04 10 84 c0 0f 85 5c 07 00 00 4c 8b 6c 24 78 41 f6 45 00 02 48 8b 4c 24 18 75 1e 49 83 c4 08 4c 89 e0 48 c1 e8 03 <0f> b6 04 10 84 c0 0f 85 d2 09 00 00 41 c6 04 24 ff eb 22 48 8b 9c
RSP: 0018:ffffc9000463f080 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffffc9000463f640 RCX: ffff888072cbb130
RDX: dffffc0000000000 RSI: ffff8880714df840 RDI: ffff888072cbb14e
RBP: ffffc9000463f230 R08: 000000000000000d R09: fffffbfff175b085
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000008
R13: ffff888072cbb140 R14: ffffc9000463f600 R15: 0000000000000002
FS:  00007f4d2fd7d700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe9e9d91378 CR3: 000000001c171000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	0f b6 04 10          	movzbl (%rax,%rdx,1),%eax
   6:	84 c0                	test   %al,%al
   8:	0f 85 5c 07 00 00    	jne    0x76a
   e:	4c 8b 6c 24 78       	mov    0x78(%rsp),%r13
  13:	41 f6 45 00 02       	testb  $0x2,0x0(%r13)
  18:	48 8b 4c 24 18       	mov    0x18(%rsp),%rcx
  1d:	75 1e                	jne    0x3d
  1f:	49 83 c4 08          	add    $0x8,%r12
  23:	4c 89 e0             	mov    %r12,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 10          	movzbl (%rax,%rdx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 d2 09 00 00    	jne    0xa08
  36:	41 c6 04 24 ff       	movb   $0xff,(%r12)
  3b:	eb 22                	jmp    0x5f
  3d:	48                   	rex.W
  3e:	8b                   	.byte 0x8b
  3f:	9c                   	pushfq