ci2 starts bisection 2023-04-05 20:40:59.614701371 +0000 UTC m=+23435.112116565 bisecting fixing commit since 247f34f7b80357943234f93f247a1ae6b6c3a740 building syzkaller on faae2fdada12b98e508bcf76fef1fe1aa5f5183b ensuring issue is reproducible on original commit 247f34f7b80357943234f93f247a1ae6b6c3a740 testing commit 247f34f7b80357943234f93f247a1ae6b6c3a740 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 01133493d45d36e687125ab93718bc7c98856211e5aedb55cc06798a94fab4e4 run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM run #1: crashed: kernel BUG in dnotify_free_mark run #2: crashed: kernel BUG in dnotify_free_mark run #3: crashed: kernel BUG in dnotify_free_mark run #4: crashed: kernel BUG in dnotify_free_mark run #5: crashed: kernel BUG in dnotify_free_mark run #6: crashed: kernel BUG in dnotify_free_mark run #7: crashed: kernel BUG in dnotify_free_mark run #8: crashed: kernel BUG in dnotify_free_mark run #9: crashed: kernel BUG in dnotify_free_mark run #10: crashed: kernel BUG in dnotify_free_mark run #11: crashed: kernel BUG in dnotify_free_mark run #12: crashed: kernel BUG in dnotify_free_mark run #13: crashed: kernel BUG in dnotify_free_mark run #14: crashed: kernel BUG in dnotify_free_mark run #15: crashed: kernel BUG in dnotify_free_mark run #16: crashed: kernel BUG in dnotify_free_mark run #17: crashed: kernel BUG in dnotify_free_mark run #18: crashed: kernel BUG in dnotify_free_mark run #19: crashed: kernel BUG in dnotify_free_mark testing current HEAD 99ddf2254febae9eab7fb0bcc02c5322243f5c49 testing commit 99ddf2254febae9eab7fb0bcc02c5322243f5c49 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: c987a13b8732c7c41e223b3d6c21343a4c78a330d354ae756d21c2eb2c8f07cb run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe run #1: basic kernel testing failed: BUG: program execution failed: executor NUM: exit status NUM run #2: crashed: kernel BUG in dnotify_free_mark run #3: crashed: kernel BUG in dnotify_free_mark run #4: crashed: kernel BUG in dnotify_free_mark run #5: crashed: kernel BUG in dnotify_free_mark run #6: crashed: kernel BUG in dnotify_free_mark run #7: crashed: kernel BUG in dnotify_free_mark run #8: crashed: kernel BUG in dnotify_free_mark run #9: crashed: kernel BUG in dnotify_free_mark revisions tested: 2, total time: 50m38.520995019s (build: 40m43.833239826s, test: 7m30.656459468s) the crash still happens on HEAD commit msg: Merge tag 'trace-v6.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace crash: kernel BUG in dnotify_free_mark ------------[ cut here ]------------ kernel BUG at fs/notify/dnotify/dnotify.c:136! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 6.3.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Workqueue: events_unbound fsnotify_mark_destroy_workfn RIP: 0010:dnotify_free_mark+0x48/0x50 Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 20 de e3 ff 48 83 3b 00 75 12 48 8b 3d 23 98 e0 0a 4c 89 f6 5b 41 5e e9 98 0d e3 ff <0f> 0b 66 0f 1f 44 00 00 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 RSP: 0018:ffffc900000e7b88 EFLAGS: 00010286 RAX: 1ffff110034c5810 RBX: ffff88801a62c080 RCX: dffffc0000000000 RDX: ffff88801a62c010 RSI: 0000000000000004 RDI: ffff88801a62c000 RBP: ffffc900000e7c50 R08: dffffc0000000000 R09: ffffed1029407d02 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801a62c000 R13: ffffc900000e7be0 R14: ffff88801a62c000 R15: ffff888016f39000 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562038f68528 CR3: 000000002773e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: fsnotify_mark_destroy_workfn+0x2b3/0x310 process_one_work+0x7c4/0xe70 worker_thread+0x8c9/0xfd0 kthread+0x232/0x2b0 ret_from_fork+0x1f/0x30 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dnotify_free_mark+0x48/0x50 Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 20 de e3 ff 48 83 3b 00 75 12 48 8b 3d 23 98 e0 0a 4c 89 f6 5b 41 5e e9 98 0d e3 ff <0f> 0b 66 0f 1f 44 00 00 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 RSP: 0018:ffffc900000e7b88 EFLAGS: 00010286 RAX: 1ffff110034c5810 RBX: ffff88801a62c080 RCX: dffffc0000000000 RDX: ffff88801a62c010 RSI: 0000000000000004 RDI: ffff88801a62c000 RBP: ffffc900000e7c50 R08: dffffc0000000000 R09: ffffed1029407d02 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88801a62c000 R13: ffffc900000e7be0 R14: ffff88801a62c000 R15: ffff888016f39000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f417107e000 CR3: 0000000079aad000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400