ci2 starts bisection 2023-01-23 22:24:19.925520117 +0000 UTC m=+30950.906103551 bisecting fixing commit since b357fd1c2afc1a3e1b73dc4574bb7ac0e3bd4193 building syzkaller on feb5635181eb12a6e3516172a3f5af06a3bc93e1 ensuring issue is reproducible on original commit b357fd1c2afc1a3e1b73dc4574bb7ac0e3bd4193 testing commit b357fd1c2afc1a3e1b73dc4574bb7ac0e3bd4193 gcc compiler: Debian clang version 13.0.1-6~deb11u1, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 4d6be54a01ab46cc8445a5ca855568cdea57145f6f2fcfc632cd1d0990e9139d all runs: crashed: UBSAN: shift-out-of-bounds in dbSplit testing current HEAD 7bf70dbb18820b37406fdfa2aaf14c2f5c71a11a testing commit 7bf70dbb18820b37406fdfa2aaf14c2f5c71a11a gcc compiler: Debian clang version 13.0.1-6~deb11u1, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: e283e9b45c32bd03955a1f1224ebd86cab014b2851e86ddfb919239c1eca9e2f run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe run #1: crashed: UBSAN: shift-out-of-bounds in dbSplit run #2: crashed: UBSAN: shift-out-of-bounds in dbSplit run #3: crashed: UBSAN: shift-out-of-bounds in dbSplit run #4: crashed: UBSAN: shift-out-of-bounds in dbSplit run #5: crashed: UBSAN: shift-out-of-bounds in dbSplit run #6: crashed: UBSAN: shift-out-of-bounds in dbSplit run #7: crashed: UBSAN: shift-out-of-bounds in dbSplit run #8: crashed: UBSAN: shift-out-of-bounds in dbSplit run #9: crashed: UBSAN: shift-out-of-bounds in dbSplit revisions tested: 2, total time: 46m23.354579022s (build: 36m37.323262557s, test: 6m45.057696608s) the crash still happens on HEAD commit msg: Merge tag 'vfio-v6.2-rc6' of https://github.com/awilliam/linux-vfio crash: UBSAN: shift-out-of-bounds in dbSplit loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:2621:11 shift exponent 109 is too large for 32-bit type 'int' CPU: 1 PID: 5583 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 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x12a/0x1c0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_shift_out_of_bounds+0x222/0x250 lib/ubsan.c:321 dbSplit+0x15e/0x170 fs/jfs/jfs_dmap.c:2621 dbAllocBits+0x9f/0x850 fs/jfs/jfs_dmap.c:2173 dbAllocDmap fs/jfs/jfs_dmap.c:2014 [inline] dbAllocNear+0x1ff/0x330 fs/jfs/jfs_dmap.c:1243 dbAlloc+0x5fa/0xa30 fs/jfs/jfs_dmap.c:828 diNewExt+0x850/0x3890 fs/jfs/jfs_imap.c:2251 diAllocExt fs/jfs/jfs_imap.c:1945 [inline] diAllocAG+0xb02/0x1f00 fs/jfs/jfs_imap.c:1662 diAlloc+0x3af/0x1280 fs/jfs/jfs_imap.c:1583 ialloc+0x74/0x990 fs/jfs/jfs_inode.c:56 jfs_mkdir+0xf4/0x950 fs/jfs/namei.c:225 vfs_mkdir+0x2d3/0x460 fs/namei.c:4036 do_mkdirat+0x20b/0x480 fs/namei.c:4061 __do_sys_mkdir fs/namei.c:4081 [inline] __se_sys_mkdir fs/namei.c:4079 [inline] __x64_sys_mkdir+0x65/0x70 fs/namei.c:4079 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: 0033:0x7f2f1e88a5a9 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:00007f2f1f9a3168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007f2f1e9abf80 RCX: 00007f2f1e88a5a9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200052c0 RBP: 00007f2f1e8e5580 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff01e8ffef R14: 00007f2f1f9a3300 R15: 0000000000022000 ================================================================================