ci2 starts bisection 2023-05-02 06:34:57.090166263 +0000 UTC m=+312751.110537477 bisecting fixing commit since f9ff5644bcc04221bae56f922122f2b7f5d24d62 building syzkaller on 05494336991504e3c6137b89eeddd492e17af6b6 ensuring issue is reproducible on original commit f9ff5644bcc04221bae56f922122f2b7f5d24d62 testing commit f9ff5644bcc04221bae56f922122f2b7f5d24d62 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: b8cb270640e684a5218a6805d099fec474749101bf9ecb268291142009d58783 run #0: crashed: BUG: unable to handle kernel paging request in schedule run #1: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #2: crashed: kernel panic: stack is corrupted in arch_stack_walk run #3: crashed: BUG: unable to handle kernel paging request in schedule run #4: crashed: BUG: unable to handle kernel paging request in schedule run #5: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #6: crashed: BUG: unable to handle kernel paging request in ntfs_file_write_iter run #7: crashed: BUG: unable to handle kernel paging request in schedule run #8: crashed: BUG: unable to handle kernel paging request in schedule run #9: crashed: kernel panic: stack is corrupted in arch_stack_walk run #10: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #11: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #12: crashed: BUG: unable to handle kernel paging request in schedule run #13: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #14: crashed: kernel panic: stack is corrupted in arch_stack_walk run #15: crashed: BUG: unable to handle kernel paging request in schedule run #16: crashed: BUG: unable to handle kernel paging request in schedule run #17: crashed: BUG: unable to handle kernel paging request in schedule run #18: crashed: BUG: unable to handle kernel paging request in ntfs_file_write_iter run #19: crashed: kernel panic: stack is corrupted in arch_stack_walk testing current HEAD 865fdb08197e657c59e74a35fa32362b12397f58 testing commit 865fdb08197e657c59e74a35fa32362b12397f58 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: e3b8478fb52111844f7b356a6e0b2bbd54ca6b6b79ae40c88f3629ccbeaef5f2 run #0: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #1: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #2: crashed: kernel panic: stack is corrupted in register_lock_class run #3: crashed: kernel panic: stack is corrupted in register_lock_class run #4: crashed: kernel panic: stack is corrupted in validate_chain run #5: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #6: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #7: crashed: kernel panic: stack is corrupted in register_lock_class run #8: crashed: KASAN: out-of-bounds Write in end_buffer_read_sync run #9: OK revisions tested: 2, total time: 55m3.088324051s (build: 37m28.354697941s, test: 16m57.361319575s) the crash still happens on HEAD commit msg: Merge tag 'input-for-v6.4-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input crash: KASAN: out-of-bounds Write in end_buffer_read_sync ================================================================== BUG: KASAN: out-of-bounds in end_buffer_read_sync+0x89/0x90 Write of size 4 at addr ffffc9000aadf1e0 by task ksoftirqd/0/15 CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.3.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Call Trace: dump_stack_lvl+0x12e/0x1d0 print_report+0x163/0x510 kasan_report+0x108/0x140 kasan_check_range+0x283/0x290 end_buffer_read_sync+0x89/0x90 end_bio_bh_io_sync+0x8d/0xe0 blk_update_request+0x3fb/0x1080 blk_mq_end_request+0x48/0x260 blk_done_softirq+0x83/0x120 __do_softirq+0x2ab/0x8ea run_ksoftirqd+0xa6/0x100 smpboot_thread_fn+0x534/0x890 kthread+0x276/0x2f0 ret_from_fork+0x1f/0x30 The buggy address belongs to the virtual mapping at [ffffc9000aad8000, ffffc9000aae1000) created by: copy_process+0x40a/0x3c80 The buggy address belongs to the physical page: page:ffffea00007d5540 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1f555 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 8245, tgid 8245 (dhcpcd-run-hook), ts 443758791430, free_ts 443757252969 get_page_from_freelist+0x31bf/0x3340 __alloc_pages+0x255/0x670 __vmalloc_node_range+0x7cc/0x10d0 dup_task_struct+0x5c3/0x720 copy_process+0x40a/0x3c80 kernel_clone+0x17d/0x5d0 __x64_sys_clone+0x268/0x2e0 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd page last free stack trace: free_unref_page_prepare+0x8fe/0xa10 free_unref_page_list+0x596/0x830 release_pages+0x1a07/0x1bc0 tlb_flush_mmu+0xe9/0x1e0 tlb_finish_mmu+0xb6/0x1c0 exit_mmap+0x317/0x860 __mmput+0xcb/0x300 exit_mm+0x1c4/0x280 do_exit+0x4d0/0x1cf0 do_group_exit+0x1b9/0x280 __x64_sys_exit_group+0x3f/0x40 do_syscall_64+0x41/0xc0 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffffc9000aadf080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc9000aadf100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc9000aadf180: f1 f1 f1 f1 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffffc9000aadf200: 00 00 00 00 00 00 00 f2 f2 f2 f2 f2 f2 f2 f2 f2 ffffc9000aadf280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================