Hi, We observed an issue "kernel BUG in find_lock_entries". This was observed a few months ago. Unfortunately, we have not found a reproducer for the crash yet. We will inform you if we have any update on this crash. Detailed crash information is attached below. Best regards, Dae R. Jeong ----- - Kernel version: 6.0-rc7 - Crash report: ------------[ cut here ]------------ kernel BUG at mm/filemap.c:2112! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 18497 Comm: syz-executor.0 Not tainted 6.0.0-rc7-00167-g92162e4a9862 #2 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:find_lock_entries+0xa93/0xaa0 mm/filemap.c:2111 Code: 4c 89 ef 48 c7 c6 c0 2a bc 8b e8 b8 ce 0e 00 0f 0b e8 71 99 a8 09 e8 4c 04 d3 ff 4c 89 ef 48 c7 c6 a0 1e bc 8b e8 9d ce 0e 00 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 57 41 56 41 RSP: 0018:ffffc90009e0f9c0 EFLAGS: 00010246 RAX: 9de53b58cea03600 RBX: ffffea0000664dc0 RCX: 0000000000040000 RDX: ffffc90011e81000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90009e0faf0 R08: ffffffff81e3af0a R09: ffffed1026b84f14 R10: ffffed1026b84f14 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffea0000664dc0 R14: 00fff00000020015 R15: ffffc90009e0fa40 FS: 00007fa68d5be700(0000) GS:ffff888135c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056481d8d7317 CR3: 0000000018571000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> truncate_inode_pages_range+0x195/0x1120 mm/truncate.c:364 kill_bdev block/bdev.c:75 [inline] set_blocksize+0x348/0x3c0 block/bdev.c:151 blkdev_bszset+0x202/0x2a0 block/ioctl.c:459 blkdev_ioctl+0x225/0x810 block/ioctl.c:597 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0x110/0x180 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4e/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4725fd Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa68d5bdbe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000057bf80 RCX: 00000000004725fd RDX: 0000000020000080 RSI: 0000000040081271 RDI: 0000000000000005 RBP: 00000000f477909a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000057cbd8 R13: 000000000057bf8c R14: 00007ffddba46f90 R15: 00007fa68d5bdd80 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:find_lock_entries+0xa93/0xaa0 mm/filemap.c:2111 Code: 4c 89 ef 48 c7 c6 c0 2a bc 8b e8 b8 ce 0e 00 0f 0b e8 71 99 a8 09 e8 4c 04 d3 ff 4c 89 ef 48 c7 c6 a0 1e bc 8b e8 9d ce 0e 00 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 57 41 56 41 RSP: 0018:ffffc90009e0f9c0 EFLAGS: 00010246 RAX: 9de53b58cea03600 RBX: ffffea0000664dc0 RCX: 0000000000040000 RDX: ffffc90011e81000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc90009e0faf0 R08: ffffffff81e3af0a R09: ffffed1026b84f14 R10: ffffed1026b84f14 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffea0000664dc0 R14: 00fff00000020015 R15: ffffc90009e0fa40 FS: 00007fa68d5be700(0000) GS:ffff888135c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056481d8d7317 CR3: 0000000018571000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
