ci2 starts bisection 2023-06-20 11:57:32.379222428 +0000 UTC m=+41245.995528891 bisecting fixing commit since 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 building syzkaller on 4bce1a3e705a8b62de8194bdb28f5eef89c8feec ensuring issue is reproducible on original commit 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 testing commit 43c801dc3325b9f07f8869e95ad87b05a9f21eb6 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 1de85cd002c30503740b35f71379041a998857f82564ed1d4244fe4e33aee125 all runs: crashed: general protection fault in path_openat testing current HEAD 8a30c9beebe8090696eb3d19648d19304a4f7f8b testing commit 8a30c9beebe8090696eb3d19648d19304a4f7f8b gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 290a0d578e48792a870a63187b0e07c6a9755a4f0982663feec591724354238d all runs: crashed: general protection fault in path_openat crash still not fixed/happens on the oldest tested release revisions tested: 2, total time: 15m30.684209077s (build: 9m9.623190044s, test: 5m47.637733701s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Merge branch 'android13-5.10' into android13-5.10-lts crash: general protection fault in path_openat 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: 369 Comm: syz-executor.0 Not tainted 5.10.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline] RIP: 0010:atomic_open fs/namei.c:3136 [inline] RIP: 0010:lookup_open fs/namei.c:3225 [inline] RIP: 0010:open_last_lookups fs/namei.c:3323 [inline] RIP: 0010:path_openat+0x2058/0x3980 fs/namei.c:3512 Code: ff ff 4c 8b 8d b0 fe ff ff 48 c1 e8 03 42 80 3c 20 00 0f 85 1f 0d 00 00 48 8b 85 e8 fe ff ff 4c 8b 68 18 4c 89 e8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 27 3c 03 7f 23 4c 89 ef 4c 89 8d b8 fe ff RSP: 0018:ffffc900008d7a18 EFLAGS: 00010247 RAX: 0000000000000000 RBX: ffff88811c75c000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88810c66e58c RBP: ffffc900008d7bc8 R08: 0000000000000001 R09: ffff88810cca36c4 R10: ffffed10238eb80b R11: ffff8881210bc000 R12: dffffc0000000000 R13: 0000000000000004 R14: ffffc900008d7df0 R15: ffffc900008d7c08 FS: 00007f710514e700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f710514e718 CR3: 000000010c7ee000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_filp_open+0x193/0x3d0 fs/namei.c:3542 do_sys_openat2+0x135/0x810 fs/open.c:1217 do_sys_open fs/open.c:1233 [inline] __do_sys_openat fs/open.c:1249 [inline] __se_sys_openat fs/open.c:1244 [inline] __x64_sys_openat+0x124/0x200 fs/open.c:1244 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f71055fc169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f710514e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f710571c050 RCX: 00007f71055fc169 RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c RBP: 00007f7105657ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffde73130af R14: 00007f710514e300 R15: 0000000000022000 Modules linked in: ---[ end trace 98bd377b4c3647d4 ]--- RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline] RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline] RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline] RIP: 0010:atomic_open fs/namei.c:3136 [inline] RIP: 0010:lookup_open fs/namei.c:3225 [inline] RIP: 0010:open_last_lookups fs/namei.c:3323 [inline] RIP: 0010:path_openat+0x2058/0x3980 fs/namei.c:3512 Code: ff ff 4c 8b 8d b0 fe ff ff 48 c1 e8 03 42 80 3c 20 00 0f 85 1f 0d 00 00 48 8b 85 e8 fe ff ff 4c 8b 68 18 4c 89 e8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 27 3c 03 7f 23 4c 89 ef 4c 89 8d b8 fe ff RSP: 0018:ffffc900008d7a18 EFLAGS: 00010247 RAX: 0000000000000000 RBX: ffff88811c75c000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88810c66e58c RBP: ffffc900008d7bc8 R08: 0000000000000001 R09: ffff88810cca36c4 R10: ffffed10238eb80b R11: ffff8881210bc000 R12: dffffc0000000000 R13: 0000000000000004 R14: ffffc900008d7df0 R15: ffffc900008d7c08 FS: 00007f710514e700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f710514e718 CR3: 000000010c7ee000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 4c 8b 8d b0 fe ff ff mov -0x150(%rbp),%r9 7: 48 c1 e8 03 shr $0x3,%rax b: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) 10: 0f 85 1f 0d 00 00 jne 0xd35 16: 48 8b 85 e8 fe ff ff mov -0x118(%rbp),%rax 1d: 4c 8b 68 18 mov 0x18(%rax),%r13 21: 4c 89 e8 mov %r13,%rax 24: 48 c1 e8 03 shr $0x3,%rax * 28: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2d: 84 c0 test %al,%al 2f: 74 27 je 0x58 31: 3c 03 cmp $0x3,%al 33: 7f 23 jg 0x58 35: 4c 89 ef mov %r13,%rdi 38: 4c rex.WR 39: 89 .byte 0x89 3a: 8d .byte 0x8d 3b: b8 .byte 0xb8 3c: fe (bad) 3d: ff .byte 0xff