ci2 starts bisection 2023-04-03 20:11:32.5452373 +0000 UTC m=+52304.638395127 bisecting fixing commit since bff687b3dad6e0e56b27f4d3ed8a9695f35c7b1a building syzkaller on ab32d50881df9f96f2af301aadca62ad00b7e099 ensuring issue is reproducible on original commit bff687b3dad6e0e56b27f4d3ed8a9695f35c7b1a testing commit bff687b3dad6e0e56b27f4d3ed8a9695f35c7b1a gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 31751789236596c296b583065736562f6819445f2711db4c22bcb37f25a2c0aa all runs: crashed: BUG: unable to handle kernel paging request in step_into testing current HEAD 148341f0a2f53b5e8808d093333d85170586a15d testing commit 148341f0a2f53b5e8808d093333d85170586a15d gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 973d1f7a7aa2b1409006e8c4c21ec31c255b3b6e0d34e13e20d4e99b6eaa86e7 all runs: crashed: BUG: unable to handle kernel paging request in step_into revisions tested: 2, total time: 53m33.944546217s (build: 44m23.858904569s, test: 6m10.849208141s) the crash still happens on HEAD commit msg: Merge tag 'vfs.misc.fixes.v6.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping crash: BUG: unable to handle kernel paging request in step_into ntfs: (device loop0): check_windows_hibernation_status(): Failed to find inode number for hiberfil.sys. ntfs: (device loop0): load_system_files(): Failed to determine if Windows is hibernated. Will not be able to remount read-write. Run chkdsk. ntfs: (device loop0): ntfs_lookup(): ntfs_lookup_ino_by_name() failed with error code 83886016. BUG: unable to handle page fault for address: fffffbffff600008 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5600 Comm: syz-executor.0 Not tainted 6.3.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:step_into+0x18a/0xe00 Code: c0 0f 85 37 0a 00 00 44 8b 3b 43 80 3c 26 00 74 0a 48 8b 7c 24 68 e8 55 21 f0 ff 48 8b 9c 24 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 24 0a 00 00 8b 33 f7 c6 00 00 07 00 0f RSP: 0018:ffffc900049cf680 EFLAGS: 00010a02 RAX: 1fffffffff600008 RBX: fffffffffb000040 RCX: dffffc0000000000 RDX: fffffffffb000040 RSI: 0000000000000001 RDI: ffffc900049cfba0 RBP: ffffc900049cf7d8 R08: dffffc0000000000 R09: ffffed100e9e0291 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffc900049cfba0 R14: 1ffff92000939eeb R15: 0000000000000000 FS: 00007fa874de5700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbffff600008 CR3: 00000000764f9000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: path_lookupat+0x99/0x360 do_o_path+0x76/0x210 path_openat+0x2663/0x2b80 do_filp_open+0x25f/0x4b0 do_sys_openat2+0x100/0x420 __x64_sys_open+0x1ef/0x240 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa87408c0a9 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:00007fa874de5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fa8741abf80 RCX: 00007fa87408c0a9 RDX: 0000000000000000 RSI: 0000000001ee0000 RDI: 0000000020000340 RBP: 00007fa8740e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe6d2b56df R14: 00007fa874de5300 R15: 0000000000022000 Modules linked in: CR2: fffffbffff600008 ---[ end trace 0000000000000000 ]--- RIP: 0010:step_into+0x18a/0xe00 Code: c0 0f 85 37 0a 00 00 44 8b 3b 43 80 3c 26 00 74 0a 48 8b 7c 24 68 e8 55 21 f0 ff 48 8b 9c 24 d8 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 24 0a 00 00 8b 33 f7 c6 00 00 07 00 0f RSP: 0018:ffffc900049cf680 EFLAGS: 00010a02 RAX: 1fffffffff600008 RBX: fffffffffb000040 RCX: dffffc0000000000 RDX: fffffffffb000040 RSI: 0000000000000001 RDI: ffffc900049cfba0 RBP: ffffc900049cf7d8 R08: dffffc0000000000 R09: ffffed100e9e0291 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffc900049cfba0 R14: 1ffff92000939eeb R15: 0000000000000000 FS: 00007fa874de5700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbffff600008 CR3: 00000000764f9000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 0f 85 37 0a 00 00 jne 0xa3d 6: 44 8b 3b mov (%rbx),%r15d 9: 43 80 3c 26 00 cmpb $0x0,(%r14,%r12,1) e: 74 0a je 0x1a 10: 48 8b 7c 24 68 mov 0x68(%rsp),%rdi 15: e8 55 21 f0 ff callq 0xfff0216f 1a: 48 8b 9c 24 d8 00 00 mov 0xd8(%rsp),%rbx 21: 00 22: 48 89 d8 mov %rbx,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 24 0a 00 00 jne 0xa5a 36: 8b 33 mov (%rbx),%esi 38: f7 c6 00 00 07 00 test $0x70000,%esi 3e: 0f .byte 0xf