ci2 starts bisection 2023-07-07 20:12:53.470318382 +0000 UTC m=+14967.050868809 bisecting fixing commit since d2869ace6eeb8ea8a6e70e6904524c5a6456d3fb building syzkaller on a4ae4f428721da42ac15f07d6f3b54584dedee27 ensuring issue is reproducible on original commit d2869ace6eeb8ea8a6e70e6904524c5a6456d3fb testing commit d2869ace6eeb8ea8a6e70e6904524c5a6456d3fb gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f8b53b33618ccf9076aa5438a72421cbf781d1d9f05a9b7e706750fd78baae20 run #0: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #1: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #2: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #3: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #4: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #5: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #6: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #7: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #8: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #9: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #10: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #11: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #12: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #13: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #14: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #15: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #16: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #17: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #18: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #19: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #20: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #21: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #22: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #23: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #24: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #25: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #26: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #27: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #28: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #29: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #30: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #31: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #32: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #33: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #34: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #35: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #36: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #37: crashed: KASAN: use-after-free Read in reiserfs_find_entry run #38: boot failed: can't ssh into the instance representative crash: KASAN: use-after-free Read in reiserfs_find_entry, types: [KASAN] check whether we can drop unnecessary instrumentation disabling configs for [HANG LEAK UBSAN BUG LOCKDEP ATOMIC_SLEEP], they are not needed testing commit d2869ace6eeb8ea8a6e70e6904524c5a6456d3fb gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: f4e2e8775846f438712f82ad40eccf9c078cdf3e6dbcef90f4f800ef733f5f47 all runs: crashed: KASAN: use-after-free Read in reiserfs_find_entry representative crash: KASAN: use-after-free Read in reiserfs_find_entry, types: [KASAN] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing current HEAD 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 testing commit 61fd484b2cf6bc8022e8e5ea6f693a9991740ac2 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 6caf302f95074105d64a71c4f671ce754fc37dd303554f72cfea420d63ac1200 all runs: crashed: KASAN: use-after-free Read in reiserfs_find_entry representative crash: KASAN: use-after-free Read in reiserfs_find_entry, types: [KASAN] crash still not fixed/happens on the oldest tested release revisions tested: 3, total time: 2h21m1.455448336s (build: 1h58m15.901935711s, test: 16m43.63977098s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Linux 6.1.38 crash: KASAN: use-after-free Read in reiserfs_find_entry REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop0): Using r5 hash to sort names ================================================================== BUG: KASAN: use-after-free in strlen+0x54/0x70 lib/string.c:495 Read of size 1 at addr ffff0000e6e547a3 by task syz-executor.0/4709 CPU: 0 PID: 4709 Comm: syz-executor.0 Not tainted 6.1.38-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call trace: dump_backtrace+0x100/0x150 arch/arm64/kernel/stacktrace.c:158 show_stack+0x18/0x24 arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x90/0xc8 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:395 kasan_report+0xd4/0x130 mm/kasan/report.c:495 __asan_report_load1_noabort+0x2c/0x38 mm/kasan/report_generic.c:348 strlen+0x54/0x70 lib/string.c:495 set_de_name_and_namelen fs/reiserfs/namei.c:82 [inline] linear_search_in_dir_item fs/reiserfs/namei.c:262 [inline] reiserfs_find_entry+0x768/0x1458 fs/reiserfs/namei.c:331 reiserfs_lookup+0x170/0x36c fs/reiserfs/namei.c:368 __lookup_slow+0x220/0x308 fs/namei.c:1685 lookup_one_len+0x1c0/0x210 fs/namei.c:2711 reiserfs_lookup_privroot+0x88/0x1e8 fs/reiserfs/xattr.c:973 reiserfs_fill_super+0x11e0/0x1b40 fs/reiserfs/super.c:2192 mount_bdev+0x224/0x2cc fs/super.c:1423 get_super_block+0x18/0x24 fs/reiserfs/super.c:2601 legacy_get_tree+0xd0/0x158 fs/fs_context.c:610 vfs_get_tree+0x88/0x188 fs/super.c:1553 do_new_mount+0x1a4/0x6f8 fs/namespace.c:3040 path_mount+0x4f8/0xa4c fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x3a0/0x44c fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x7c/0x258 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x160/0x1e4 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x54/0x178 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x13c arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 The buggy address belongs to the physical page: page:00000000b7361bd5 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x126e54 flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000000 fffffc00039bae88 fffffc00039bad08 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e6e54680: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff0000e6e54700: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff0000e6e54780: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff0000e6e54800: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff0000e6e54880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================