bisecting fixing commit since 2fe1020d73ca0467b5383b0a3e459a1d29902762
building syzkaller on 744a39e220cece33e207035facce6c5ae161b775
testing commit 2fe1020d73ca0467b5383b0a3e459a1d29902762
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: b421ff9a5dc7bdc791bbb84db18e3ae2383a18c3906a05b6ff456c278e6c9ab7
run #0: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #1: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #2: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe
run #3: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #4: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #5: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #6: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #7: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #8: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #9: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #10: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #11: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #12: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #13: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #14: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #15: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #16: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #17: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #18: crashed: UBSAN: shift-out-of-bounds in minix_statfs
run #19: crashed: UBSAN: shift-out-of-bounds in minix_statfs
testing current HEAD b13baccc3850ca8b8cccbf8ed9912dbaa0fdf7f3
testing commit b13baccc3850ca8b8cccbf8ed9912dbaa0fdf7f3
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: ab2cc862b3a0dd09535d090560fa1f562ee4e50fb720d19419adab0872c811fa
all runs: crashed: UBSAN: shift-out-of-bounds in minix_statfs
revisions tested: 2, total time: 21m59.950552424s (build: 12m56.958115737s, test: 8m33.118245714s)
the crash still happens on HEAD
commit msg: Linux 5.19-rc2
crash: UBSAN: shift-out-of-bounds in minix_statfs
loop0: detected capacity change from 0 to 272
================================================================================
UBSAN: shift-out-of-bounds in fs/minix/inode.c:380:57
shift exponent 65510 is too large for 64-bit type 'long unsigned int'
CPU: 0 PID: 4099 Comm: syz-executor.0 Not tainted 5.19.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
 ubsan_epilogue+0x5/0x36 lib/ubsan.c:151
 __ubsan_handle_shift_out_of_bounds.cold+0x61/0xef lib/ubsan.c:322
 minix_statfs.cold+0x16/0x1f fs/minix/inode.c:380
 statfs_by_dentry fs/statfs.c:66 [inline]
 statfs_by_dentry+0x11b/0x1e0 fs/statfs.c:55
 vfs_statfs fs/statfs.c:90 [inline]
 fd_statfs+0x41/0xb0 fs/statfs.c:120
 __do_sys_fstatfs+0x6b/0xc0 fs/statfs.c:216
 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+0x46/0xb0
RIP: 0033:0x7f87518890e9
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:00007f8752a35168 EFLAGS: 00000246 ORIG_RAX: 000000000000008a
RAX: ffffffffffffffda RBX: 00007f875199bf60 RCX: 00007f87518890e9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f87518e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff8973c3cf R14: 00007f8752a35300 R15: 0000000000022000
 </TASK>
================================================================================