ci starts bisection 2023-05-31 14:57:25.574503748 +0000 UTC m=+5802.249796731 bisecting fixing commit since 58390c8ce1bddb6c623f62e7ed36383e7fa5c02f building syzkaller on 62df2017e3b1edd786a4c737bd4ccba2b4581d88 ensuring issue is reproducible on original commit 58390c8ce1bddb6c623f62e7ed36383e7fa5c02f testing commit 58390c8ce1bddb6c623f62e7ed36383e7fa5c02f gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: b5da8a37a25c4809d392ece60837c74820b248c464318deea1e1624d19444cb8 run #0: crashed: KASAN: null-ptr-deref Read in fix_nodes run #1: crashed: KASAN: null-ptr-deref Read in fix_nodes run #2: crashed: KASAN: null-ptr-deref Read in fix_nodes run #3: crashed: KASAN: null-ptr-deref Read in fix_nodes run #4: crashed: KASAN: null-ptr-deref Read in fix_nodes run #5: crashed: KASAN: null-ptr-deref Read in fix_nodes run #6: crashed: KASAN: null-ptr-deref Read in fix_nodes run #7: crashed: KASAN: null-ptr-deref Read in fix_nodes run #8: crashed: KASAN: null-ptr-deref Read in fix_nodes run #9: crashed: KASAN: null-ptr-deref Read in fix_nodes run #10: crashed: KASAN: null-ptr-deref Read in fix_nodes run #11: crashed: KASAN: null-ptr-deref Read in fix_nodes run #12: crashed: KASAN: null-ptr-deref Read in fix_nodes run #13: crashed: KASAN: null-ptr-deref Read in fix_nodes run #14: crashed: KASAN: null-ptr-deref Read in fix_nodes run #15: crashed: KASAN: null-ptr-deref Read in fix_nodes run #16: crashed: KASAN: null-ptr-deref Read in fix_nodes run #17: crashed: KASAN: null-ptr-deref Read in fix_nodes run #18: OK run #19: OK testing current HEAD 48b1320a674e1ff5de2fad8606bee38f724594dc testing commit 48b1320a674e1ff5de2fad8606bee38f724594dc gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: ac2325b9ef86af1cf2d14539347183435abc8d215a5f1c02eb9f16f698110fe1 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: 32m33.199391481s (build: 17m3.372757608s, test: 15m2.387293482s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Merge tag 'for-6.4-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux crash: KASAN: null-ptr-deref Read in fix_nodes ================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:68 [inline] BUG: KASAN: null-ptr-deref in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: null-ptr-deref in buffer_locked include/linux/buffer_head.h:126 [inline] BUG: KASAN: null-ptr-deref in fix_nodes+0x450/0x80c0 fs/reiserfs/fix_node.c:2578 Read of size 8 at addr 0000000000000000 by task syz-executor.0/11512 CPU: 1 PID: 11512 Comm: syz-executor.0 Not tainted 6.4.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x64/0xb0 lib/dump_stack.c:106 print_report mm/kasan/report.c:465 [inline] kasan_report+0xec/0x130 mm/kasan/report.c:572 check_region_inline mm/kasan/generic.c:181 [inline] kasan_check_range+0x141/0x190 mm/kasan/generic.c:187 instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] buffer_locked include/linux/buffer_head.h:126 [inline] fix_nodes+0x450/0x80c0 fs/reiserfs/fix_node.c:2578 reiserfs_cut_from_item+0x275/0x16a0 fs/reiserfs/stree.c:1740 reiserfs_do_truncate+0x8aa/0xea0 fs/reiserfs/stree.c:1971 reiserfs_truncate_file+0x180/0xd10 fs/reiserfs/inode.c:2308 reiserfs_setattr+0xa47/0xfd0 fs/reiserfs/inode.c:3393 notify_change+0x7fb/0xda0 fs/attr.c:483 do_truncate+0xf2/0x1a0 fs/open.c:66 handle_truncate fs/namei.c:3295 [inline] do_open fs/namei.c:3640 [inline] path_openat+0x16c1/0x2280 fs/namei.c:3791 do_filp_open+0x1a9/0x3e0 fs/namei.c:3818 do_sys_openat2+0x11e/0x3f0 fs/open.c:1356 do_sys_open fs/open.c:1372 [inline] __do_sys_open fs/open.c:1380 [inline] __se_sys_open fs/open.c:1376 [inline] __x64_sys_open+0x101/0x1a0 fs/open.c:1376 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe77348c169 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:00007fe76a7dd168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fe7735ac050 RCX: 00007fe77348c169 RDX: 0000000000000000 RSI: 000000000014937e RDI: 0000000020000180 RBP: 00007fe7734e7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff97389e9f R14: 00007fe76a7dd300 R15: 0000000000022000 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