syzbot


UBSAN: shift-out-of-bounds in extHint

Status: upstream: reported C repro on 2022/10/20 06:16
Reported-by: syzbot+4685943e4e2bf4a61bed@syzkaller.appspotmail.com
First crash: 38d, last: 23d

Cause bisection: failed (bisect log)

Sample crash report:
loop0: detected capacity change from 0 to 32768
================================================================================
UBSAN: shift-out-of-bounds in fs/jfs/jfs_extent.c:314:16
shift exponent -1 is negative
CPU: 0 PID: 3600 Comm: syz-executor298 Not tainted 6.1.0-rc1-next-20221021-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 ubsan_epilogue+0xb/0x50 lib/ubsan.c:151
 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x187 lib/ubsan.c:322
 extHint.cold-0x5/0x1f
 jfs_get_block+0x661/0xa90 fs/jfs/inode.c:248
 __block_write_begin_int+0x3b9/0x14b0 fs/buffer.c:1991
 __block_write_begin fs/buffer.c:2041 [inline]
 block_write_begin+0xb5/0x440 fs/buffer.c:2102
 jfs_write_begin+0x2d/0xd0 fs/jfs/inode.c:304
 generic_perform_write+0x252/0x570 mm/filemap.c:3771
 __generic_file_write_iter+0x2aa/0x4d0 mm/filemap.c:3899
 generic_file_write_iter+0xdf/0x350 mm/filemap.c:3931
 call_write_iter include/linux/fs.h:2191 [inline]
 do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735
 do_iter_write+0x182/0x700 fs/read_write.c:861
 vfs_writev+0x1aa/0x630 fs/read_write.c:934
 do_pwritev+0x1b6/0x270 fs/read_write.c:1031
 __do_sys_pwritev2 fs/read_write.c:1090 [inline]
 __se_sys_pwritev2 fs/read_write.c:1081 [inline]
 __x64_sys_pwritev2+0xeb/0x150 fs/read_write.c:1081
 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: 0033:0x7f96946d7c59
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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffdc31f1eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f96946d7c59
RDX: 0000000000000001 RSI: 0000000020005640 RDI: 0000000000000003
RBP: 00007f9694697420 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000f8008000
R13: 0000000000000000 R14: 00080000000000f8 R15: 0000000000000000
 </TASK>
================================================================================

Crashes (51):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2022/10/25 20:03 linux-next 4d48f589d294 45645420 .config log report syz C UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/24 10:49 linux-next 4d48f589d294 23bf86af .config log report syz C UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/19 21:02 linux-next a72b55bc981b b31320fc .config log report syz C UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/11/03 04:37 linux-next 61c3426aca2c 08977f5d .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/11/02 04:47 linux-next 4d48f589d294 edac4fd1 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/11/02 01:26 linux-next 4d48f589d294 edac4fd1 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/11/01 08:37 linux-next 4d48f589d294 a1d8560a .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/11/01 00:14 linux-next 4d48f589d294 2a71366b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/31 11:43 linux-next 4d48f589d294 2a71366b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/31 08:38 linux-next 4d48f589d294 2a71366b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/31 00:45 linux-next 4d48f589d294 2a71366b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/30 20:23 linux-next 4d48f589d294 2a71366b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/30 13:13 linux-next 4d48f589d294 2a71366b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/29 22:23 linux-next 4d48f589d294 899d812a .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/29 00:58 linux-next 4d48f589d294 ea12ae9b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/28 22:09 linux-next 4d48f589d294 ea12ae9b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/28 22:09 linux-next 4d48f589d294 ea12ae9b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/28 20:28 linux-next 4d48f589d294 ea12ae9b .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/28 02:30 linux-next 4d48f589d294 86777b7f .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/27 05:57 linux-next 4d48f589d294 86777b7f .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/27 05:25 linux-next 4d48f589d294 86777b7f .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/26 20:33 linux-next 4d48f589d294 2159e4d2 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/26 20:29 linux-next 4d48f589d294 2159e4d2 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/26 15:26 linux-next 4d48f589d294 2159e4d2 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/26 09:49 linux-next 4d48f589d294 1984aebd .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/26 03:23 linux-next 4d48f589d294 1984aebd .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/25 13:50 linux-next 4d48f589d294 45645420 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/25 13:50 linux-next 4d48f589d294 45645420 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/25 04:08 linux-next 4d48f589d294 ff2fe65d .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/24 22:24 linux-next 4d48f589d294 ff2fe65d .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/24 04:09 linux-next 4d48f589d294 23bf86af .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/24 03:11 linux-next 4d48f589d294 23bf86af .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/23 13:02 linux-next 4d48f589d294 c0b80a55 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/23 11:22 linux-next 4d48f589d294 c0b80a55 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/22 18:06 linux-next 4d48f589d294 c0b80a55 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/22 17:55 linux-next 4d48f589d294 c0b80a55 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/22 17:54 linux-next 4d48f589d294 c0b80a55 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/22 17:54 linux-next 4d48f589d294 c0b80a55 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/22 15:53 linux-next 4d48f589d294 c0b80a55 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/22 11:36 linux-next 4d48f589d294 c0b80a55 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/21 23:57 linux-next 4d48f589d294 4bfd3c27 .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/21 10:35 linux-next 4d48f589d294 63e790dd .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/21 10:32 linux-next 4d48f589d294 63e790dd .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/21 10:18 linux-next 4d48f589d294 63e790dd .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/20 23:15 linux-next acee3e83b493 a0fd4dab .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/20 23:09 linux-next acee3e83b493 a0fd4dab .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/20 23:09 linux-next acee3e83b493 a0fd4dab .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/20 23:09 linux-next acee3e83b493 a0fd4dab .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/20 04:22 linux-next a72b55bc981b b31320fc .config log report info UBSAN: shift-out-of-bounds in extHint
ci-upstream-linux-next-kasan-gce-root 2022/10/19 20:31 linux-next a72b55bc981b b31320fc .config log report info UBSAN: shift-out-of-bounds in extHint
* Struck through repros no longer work on HEAD.