ci2 starts bisection 2022-11-11 19:05:59.856149089 +0000 UTC m=+56847.012392053 bisecting fixing commit since 493ffd6605b2d3d4dc7008ab927dba319f36671f building syzkaller on 16a9c9e0fe35ce296944c5682f4a54d52bd67e71 ensuring issue is reproducible on original commit 493ffd6605b2d3d4dc7008ab927dba319f36671f testing commit 493ffd6605b2d3d4dc7008ab927dba319f36671f gcc compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 3dc8d2de8fb1a6587e203c307d02dad86a89b5c7c2fc96440b0ec12f80b552b3 all runs: crashed: general protection fault in dtInsert testing current HEAD eb037f16f7e843722db5f0275d84b3f738d5649d testing commit eb037f16f7e843722db5f0275d84b3f738d5649d gcc compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 61b77b762c3b5313a0799d69708154a972ababa81812b33088f7d57fbf35bd8c all runs: crashed: general protection fault in dtInsert revisions tested: 2, total time: 36m35.508217532s (build: 26m34.557314155s, test: 8m27.832658803s) the crash still happens on HEAD commit msg: Merge tag 'perf-tools-fixes-for-v6.1-2-2022-11-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux crash: general protection fault in dtInsert loop0: detected capacity change from 0 to 32768 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 4171 Comm: syz-executor.0 Not tainted 6.1.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:dtExtendPage fs/jfs/jfs_dtree.c:1661 [inline] RIP: 0010:dtSplitUp fs/jfs/jfs_dtree.c:1034 [inline] RIP: 0010:dtInsert+0x2ebe/0x6c10 fs/jfs/jfs_dtree.c:863 Code: 10 00 48 8b 5c 24 08 74 12 48 89 df e8 ab b1 fd fe 48 ba 00 00 00 00 00 fc ff df 4c 89 2b eb 03 45 31 ed 4d 89 ee 49 c1 ee 03 <41> 80 3c 16 00 74 08 4c 89 ef e8 03 b1 fd fe 49 8b 75 00 48 85 f6 RSP: 0018:ffffc90004baf6c0 EFLAGS: 00010246 RAX: ffffc90004bafc10 RBX: ffffc90004bafc00 RCX: 1ffff92000975f31 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90004baf982 RBP: ffffc90004bafb30 R08: dffffc0000000000 R09: fffff940003dd69f R10: fffff940003dd69f R11: 1ffffd40003dd69e R12: ffff888072f93270 R13: 0000000000000000 R14: 0000000000000000 R15: 1ffff92000975f28 FS: 00007fb5c31e6700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb5c2113e09 CR3: 000000001c8cb000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: jfs_create+0x5de/0x960 fs/jfs/namei.c:137 vfs_create+0x25e/0x3b0 fs/namei.c:3115 do_mknodat+0x33e/0x640 fs/namei.c:3964 __do_sys_mknodat fs/namei.c:3992 [inline] __se_sys_mknodat fs/namei.c:3989 [inline] __x64_sys_mknodat+0xa0/0xb0 fs/namei.c:3989 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb5c208b5a9 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:00007fb5c31e6168 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 RAX: ffffffffffffffda RBX: 00007fb5c21abf80 RCX: 00007fb5c208b5a9 RDX: 0000000000000008 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 00007fb5c20e6580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000103 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe66979d9f R14: 00007fb5c31e6300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dtExtendPage fs/jfs/jfs_dtree.c:1661 [inline] RIP: 0010:dtSplitUp fs/jfs/jfs_dtree.c:1034 [inline] RIP: 0010:dtInsert+0x2ebe/0x6c10 fs/jfs/jfs_dtree.c:863 Code: 10 00 48 8b 5c 24 08 74 12 48 89 df e8 ab b1 fd fe 48 ba 00 00 00 00 00 fc ff df 4c 89 2b eb 03 45 31 ed 4d 89 ee 49 c1 ee 03 <41> 80 3c 16 00 74 08 4c 89 ef e8 03 b1 fd fe 49 8b 75 00 48 85 f6 RSP: 0018:ffffc90004baf6c0 EFLAGS: 00010246 RAX: ffffc90004bafc10 RBX: ffffc90004bafc00 RCX: 1ffff92000975f31 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90004baf982 RBP: ffffc90004bafb30 R08: dffffc0000000000 R09: fffff940003dd69f R10: fffff940003dd69f R11: 1ffffd40003dd69e R12: ffff888072f93270 R13: 0000000000000000 R14: 0000000000000000 R15: 1ffff92000975f28 FS: 00007fb5c31e6700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb5c2113e09 CR3: 000000001c8cb000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 10 00 adc %al,(%rax) 2: 48 8b 5c 24 08 mov 0x8(%rsp),%rbx 7: 74 12 je 0x1b 9: 48 89 df mov %rbx,%rdi c: e8 ab b1 fd fe callq 0xfefdb1bc 11: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 18: fc ff df 1b: 4c 89 2b mov %r13,(%rbx) 1e: eb 03 jmp 0x23 20: 45 31 ed xor %r13d,%r13d 23: 4d 89 ee mov %r13,%r14 26: 49 c1 ee 03 shr $0x3,%r14 * 2a: 41 80 3c 16 00 cmpb $0x0,(%r14,%rdx,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ef mov %r13,%rdi 34: e8 03 b1 fd fe callq 0xfefdb13c 39: 49 8b 75 00 mov 0x0(%r13),%rsi 3d: 48 85 f6 test %rsi,%rsi