ci2 starts bisection 2023-04-26 19:59:11.03319607 +0000 UTC m=+35967.026543508 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 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6994d05037007ef4089175c7ffa53e786fc6e7710e26eed456feb4127c39f4d5 all runs: crashed: general protection fault in dtInsert testing current HEAD 5c7ecada25d2086aee607ff7deb69e77faa4aa92 testing commit 5c7ecada25d2086aee607ff7deb69e77faa4aa92 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 8a80bdba5c89d20d30feb6aa94d5ec8572130b955b75f99213f66396db814480 all runs: crashed: general protection fault in dtInsert revisions tested: 2, total time: 46m5.079211664s (build: 37m37.29996929s, test: 7m30.934078109s) the crash still happens on HEAD commit msg: Merge tag 'f2fs-for-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs 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: 5408 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:dtInsert+0x2f55/0x6c80 Code: 8b 9c 24 98 00 00 00 74 12 48 89 df e8 84 c8 02 ff 48 ba 00 00 00 00 00 fc ff df 4c 89 33 eb 03 45 31 f6 4c 89 f3 48 c1 eb 03 <80> 3c 13 00 74 08 4c 89 f7 e8 bd c7 02 ff 49 8b 36 48 85 f6 0f 84 RSP: 0018:ffffc90004e076e0 EFLAGS: 00010246 RAX: ffffc90004e07c30 RBX: 0000000000000000 RCX: ffffffff82bdaa05 RDX: dffffc0000000000 RSI: 1ffff920009c0f34 RDI: ffffc90004e07a70 RBP: ffffc90004e07b50 R08: dffffc0000000000 R09: fffff940001228ef R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 1ffff920009c0f35 R14: 0000000000000000 R15: ffff888071bd0000 FS: 00007faef2b69700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faef1b13e09 CR3: 000000007e766000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: jfs_create+0x5ec/0x970 vfs_create+0x193/0x2d0 do_mknodat+0x33f/0x640 __x64_sys_mknodat+0xa4/0xb0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7faef1a8b5a9 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:00007faef2b69168 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 RAX: ffffffffffffffda RBX: 00007faef1babf80 RCX: 00007faef1a8b5a9 RDX: 0000000000000008 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 00007faef1ae6580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000103 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd4793885f R14: 00007faef2b69300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dtInsert+0x2f55/0x6c80 Code: 8b 9c 24 98 00 00 00 74 12 48 89 df e8 84 c8 02 ff 48 ba 00 00 00 00 00 fc ff df 4c 89 33 eb 03 45 31 f6 4c 89 f3 48 c1 eb 03 <80> 3c 13 00 74 08 4c 89 f7 e8 bd c7 02 ff 49 8b 36 48 85 f6 0f 84 RSP: 0018:ffffc90004e076e0 EFLAGS: 00010246 RAX: ffffc90004e07c30 RBX: 0000000000000000 RCX: ffffffff82bdaa05 RDX: dffffc0000000000 RSI: 1ffff920009c0f34 RDI: ffffc90004e07a70 RBP: ffffc90004e07b50 R08: dffffc0000000000 R09: fffff940001228ef R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 1ffff920009c0f35 R14: 0000000000000000 R15: ffff888071bd0000 FS: 00007faef2b69700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5cbde98378 CR3: 000000007e766000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8b 9c 24 98 00 00 00 mov 0x98(%rsp),%ebx 7: 74 12 je 0x1b 9: 48 89 df mov %rbx,%rdi c: e8 84 c8 02 ff callq 0xff02c895 11: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 18: fc ff df 1b: 4c 89 33 mov %r14,(%rbx) 1e: eb 03 jmp 0x23 20: 45 31 f6 xor %r14d,%r14d 23: 4c 89 f3 mov %r14,%rbx 26: 48 c1 eb 03 shr $0x3,%rbx * 2a: 80 3c 13 00 cmpb $0x0,(%rbx,%rdx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 4c 89 f7 mov %r14,%rdi 33: e8 bd c7 02 ff callq 0xff02c7f5 38: 49 8b 36 mov (%r14),%rsi 3b: 48 85 f6 test %rsi,%rsi 3e: 0f .byte 0xf 3f: 84 .byte 0x84