ci2 starts bisection 2023-06-28 04:26:49.941618042 +0000 UTC m=+135629.031965889
bisecting fixing commit since 1fe619a7d25218e9b9fdcce9fcac6a05cd62abed
building syzkaller on cf1845599c0bdab59c69518eaa0ecb960ec7ddf0
ensuring issue is reproducible on original commit 1fe619a7d25218e9b9fdcce9fcac6a05cd62abed

testing commit 1fe619a7d25218e9b9fdcce9fcac6a05cd62abed gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: e461f37bca428c5d14e9cedbf7c0e2050e8eddc06759c1ecc11ab8a864063323
all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes
testing current HEAD f67653019430833d5003f16817d7fa85272a6a76
testing commit f67653019430833d5003f16817d7fa85272a6a76 gcc
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 0e4c5d10b856bd6552630d3dd6b81eb5a8ba8c62a7dd33d7c1f481ade38900f6
all runs: crashed: KASAN: null-ptr-deref Read in fix_nodes
crash still not fixed/happens on the oldest tested release
revisions tested: 2, total time: 46m18.761363324s (build: 32m26.936058007s, test: 13m2.545871721s)
crash still not fixed on HEAD or HEAD had kernel test errors
commit msg: Linux 5.15.118
crash: KASAN: null-ptr-deref Read in fix_nodes
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 1 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
REISERFS error (device loop5): vs-5150 search_by_key: invalid format found in block 540. Fsck?
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: null-ptr-deref in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
BUG: KASAN: null-ptr-deref in buffer_locked include/linux/buffer_head.h:122 [inline]
BUG: KASAN: null-ptr-deref in fix_nodes+0x44c/0x80e0 fs/reiserfs/fix_node.c:2578
Read of size 8 at addr 0000000000000000 by task syz-executor.5/8575

CPU: 1 PID: 8575 Comm: syz-executor.5 Not tainted 5.15.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
 __kasan_report mm/kasan/report.c:438 [inline]
 kasan_report.cold+0x66/0xdf mm/kasan/report.c:451
 check_region_inline mm/kasan/generic.c:183 [inline]
 kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:71 [inline]
 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
 buffer_locked include/linux/buffer_head.h:122 [inline]
 fix_nodes+0x44c/0x80e0 fs/reiserfs/fix_node.c:2578
 reiserfs_cut_from_item+0x266/0x1690 fs/reiserfs/stree.c:1742
 reiserfs_do_truncate+0x8a6/0xea0 fs/reiserfs/stree.c:1973
 reiserfs_truncate_file+0x179/0xc70 fs/reiserfs/inode.c:2318
 reiserfs_setattr+0x877/0xd20 fs/reiserfs/inode.c:3409
 notify_change+0x863/0xe20 fs/attr.c:488
 do_truncate+0xee/0x1a0 fs/open.c:65
 handle_truncate fs/namei.c:3195 [inline]
 do_open fs/namei.c:3542 [inline]
 path_openat+0x178e/0x23d0 fs/namei.c:3672
 do_filp_open+0x199/0x3d0 fs/namei.c:3699
 do_sys_openat2+0x11e/0x400 fs/open.c:1211
 do_sys_open fs/open.c:1227 [inline]
 __do_sys_open fs/open.c:1235 [inline]
 __se_sys_open fs/open.c:1231 [inline]
 __x64_sys_open+0xfd/0x1a0 fs/open.c:1231
 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+0x61/0xcb
RIP: 0033:0x7f52d78fe169
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:00007f52cec4f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f52d7a1e050 RCX: 00007f52d78fe169
RDX: 0000000000000000 RSI: 000000000014937e RDI: 0000000020000180
RBP: 00007f52d7959ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe6d9401bf R14: 00007f52cec4f300 R15: 0000000000022000
 </TASK>
==================================================================