ci starts bisection 2023-01-27 13:24:46.736577751 +0000 UTC m=+411200.682639819 bisecting fixing commit since a70385240892bcbc6442b054e847c74100e72f1a building syzkaller on 23bf86af9a2ba03cda2b5b913bafb76ce8ce14b8 ensuring issue is reproducible on original commit a70385240892bcbc6442b054e847c74100e72f1a testing commit a70385240892bcbc6442b054e847c74100e72f1a gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 37a712a881999871e4a39a8fcad3d51e771afa6817cefa2b6dce3dd1414f345c run #0: failed: failed to run binary in VM: broken console: Permission denied (publickey) run #1: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM run #2: crashed: general protection fault in dtSplitUp run #3: crashed: general protection fault in dtSplitUp run #4: crashed: general protection fault in dtSplitUp run #5: crashed: general protection fault in dtSplitUp run #6: crashed: general protection fault in dtSplitUp run #7: crashed: general protection fault in dtSplitUp run #8: crashed: general protection fault in dtSplitUp run #9: crashed: general protection fault in dtSplitUp run #10: crashed: general protection fault in dtSplitUp run #11: crashed: general protection fault in dtSplitUp run #12: crashed: general protection fault in dtSplitUp run #13: crashed: general protection fault in dtSplitUp run #14: crashed: general protection fault in dtSplitUp run #15: crashed: general protection fault in dtSplitUp run #16: crashed: general protection fault in dtSplitUp run #17: crashed: general protection fault in dtSplitUp run #18: crashed: general protection fault in dtSplitUp run #19: crashed: general protection fault in dtSplitUp testing current HEAD 5af6ce7049365952f7f023155234fe091693ead1 testing commit 5af6ce7049365952f7f023155234fe091693ead1 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 8759514a2a1485c165ec8fdaee791b0562d7fa181b7e950693b6e8abc621ede2 all runs: crashed: general protection fault in dtSplitUp revisions tested: 2, total time: 21m13.022574714s (build: 14m18.711461011s, test: 6m15.050295923s) the crash still happens on HEAD commit msg: Merge tag '6.2-rc5-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6 crash: general protection fault in dtSplitUp 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: 0 PID: 5591 Comm: syz-executor.0 Not tainted 6.2.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:dtExtendPage fs/jfs/jfs_dtree.c:1661 [inline] RIP: 0010:dtSplitUp+0x125b/0x4d80 fs/jfs/jfs_dtree.c:1034 Code: 4c 24 28 45 31 c9 48 8b 01 48 8d 51 10 48 39 d0 74 07 4c 8d 48 e8 4c 89 09 48 b8 00 00 00 00 00 fc ff df 4c 89 ca 48 c1 ea 03 <80> 3c 02 00 0f 85 a3 37 00 00 49 8b 31 48 85 f6 0f 85 96 18 00 00 RSP: 0018:ffffc9000554f7a8 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc9000554fca8 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc9000554fb48 RBP: ffff8880762c3bb0 R08: 0000000000000001 R09: 0000000000000000 R10: fffff94000384dc6 R11: ffff8880762c3a70 R12: ffffc9000554fb40 R13: ffff88806ed15e4a R14: 0000000000000000 R15: 0000000000000000 FS: 00007f7c82e9d700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc98903f000 CR3: 000000001f35d000 CR4: 0000000000350ef0 Call Trace: dtInsert+0x713/0xb20 fs/jfs/jfs_dtree.c:863 jfs_create+0x4fa/0xa50 fs/jfs/namei.c:137 vfs_create fs/namei.c:3115 [inline] vfs_create+0x314/0x5a0 fs/namei.c:3101 do_mknodat+0x2fb/0x480 fs/namei.c:3965 __do_sys_mknodat fs/namei.c:3993 [inline] __se_sys_mknodat fs/namei.c:3990 [inline] __x64_sys_mknodat+0xa5/0xd0 fs/namei.c:3990 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7c81c8b5f9 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:00007f7c82e9d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000103 RAX: ffffffffffffffda RBX: 00007f7c81dabf80 RCX: 00007f7c81c8b5f9 RDX: 0000000000000008 RSI: 0000000020000180 RDI: 0000000000000003 RBP: 00007f7c81ce67b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000103 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe2746cfff R14: 00007f7c82e9d300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dtExtendPage fs/jfs/jfs_dtree.c:1661 [inline] RIP: 0010:dtSplitUp+0x125b/0x4d80 fs/jfs/jfs_dtree.c:1034 Code: 4c 24 28 45 31 c9 48 8b 01 48 8d 51 10 48 39 d0 74 07 4c 8d 48 e8 4c 89 09 48 b8 00 00 00 00 00 fc ff df 4c 89 ca 48 c1 ea 03 <80> 3c 02 00 0f 85 a3 37 00 00 49 8b 31 48 85 f6 0f 85 96 18 00 00 RSP: 0018:ffffc9000554f7a8 EFLAGS: 00010256 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc9000554fca8 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc9000554fb48 RBP: ffff8880762c3bb0 R08: 0000000000000001 R09: 0000000000000000 R10: fffff94000384dc6 R11: ffff8880762c3a70 R12: ffffc9000554fb40 R13: ffff88806ed15e4a R14: 0000000000000000 R15: 0000000000000000 FS: 00007f7c82e9d700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc98903f000 CR3: 000000001f35d000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 4c 24 28 rex.WR and $0x28,%al 3: 45 31 c9 xor %r9d,%r9d 6: 48 8b 01 mov (%rcx),%rax 9: 48 8d 51 10 lea 0x10(%rcx),%rdx d: 48 39 d0 cmp %rdx,%rax 10: 74 07 je 0x19 12: 4c 8d 48 e8 lea -0x18(%rax),%r9 16: 4c 89 09 mov %r9,(%rcx) 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 ca mov %r9,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 a3 37 00 00 jne 0x37d7 34: 49 8b 31 mov (%r9),%rsi 37: 48 85 f6 test %rsi,%rsi 3a: 0f 85 96 18 00 00 jne 0x18d6