general protection fault in khugepaged

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in khugepaged mm	C	done	3	1368d	1380d	15/26	fixed on 2020/09/16 22:51
upstream	general protection fault in khugepaged (2) mm			1	143d	139d	0/26	auto-obsoleted due to no activity on 2024/01/27 04:37
upstream	general protection fault in khugepaged (3) mm			1	77d	72d	0/26	moderation: reported on 2024/02/07 00:07

wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1578 Comm: khugepaged Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:317 [inline] RIP: 0010:PageCompound include/linux/page-flags.h:156 [inline] RIP: 0010:PageTransCompound include/linux/page-flags.h:564 [inline] RIP: 0010:khugepaged_scan_shmem mm/khugepaged.c:1636 [inline] RIP: 0010:khugepaged_scan_mm_slot mm/khugepaged.c:1769 [inline] RIP: 0010:khugepaged_do_scan mm/khugepaged.c:1854 [inline] RIP: 0010:khugepaged+0x2664/0x4930 mm/khugepaged.c:1899 Code: 0f 84 80 0b 00 00 e8 5b 71 c5 ff 31 ff 48 89 de e8 e1 72 c5 ff 48 85 db 0f 85 d8 0b 00 00 e8 43 71 c5 ff 4c 89 e8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 31 21 00 00 49 8b 5d 00 31 ff 48 c1 eb 0f 83 RSP: 0018:ffff8880b2fdfcd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff819d141f RDX: 0000000000000000 RSI: ffffffff819d142d RDI: 0000000000000007 RBP: ffff8880498c4750 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000000 R12: ffff888098c81988 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002001d004 CR3: 0000000009e6d000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: ---[ end trace 2b5414cc3edae8a9 ]--- RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:317 [inline] RIP: 0010:PageCompound include/linux/page-flags.h:156 [inline] RIP: 0010:PageTransCompound include/linux/page-flags.h:564 [inline] RIP: 0010:khugepaged_scan_shmem mm/khugepaged.c:1636 [inline] RIP: 0010:khugepaged_scan_mm_slot mm/khugepaged.c:1769 [inline] RIP: 0010:khugepaged_do_scan mm/khugepaged.c:1854 [inline] RIP: 0010:khugepaged+0x2664/0x4930 mm/khugepaged.c:1899 Code: 0f 84 80 0b 00 00 e8 5b 71 c5 ff 31 ff 48 89 de e8 e1 72 c5 ff 48 85 db 0f 85 d8 0b 00 00 e8 43 71 c5 ff 4c 89 e8 48 c1 e8 03 <42> 80 3c 30 00 0f 85 31 21 00 00 49 8b 5d 00 31 ff 48 c1 eb 0f 83 RSP: 0018:ffff8880b2fdfcd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff819d141f RDX: 0000000000000000 RSI: ffffffff819d142d RDI: 0000000000000007 RBP: ffff8880498c4750 R08: 0000000000000000 R09: 0000000000000000 NILFS (loop2): broken superblock, retrying with spare superblock (blocksize = 1024) R10: 0000000000000007 R11: 0000000000000000 R12: ffff888098c81988 NILFS (loop2): unrecognized mount option "?^Î‡ž“BÍTªå-gW²?üßìß@ Ž0‘¨Fð~õì•%k‹>."Ú!„Í¹v¨}¢F8ŠM•åù$¼½Ó÷Á¦ eªgÔçs¹Ê2˜¯Ÿ9Ýs¶Q%hƒIÝÔÌŒ#ELüc( òÚlCý?E?U¥J„Ò€ØYÉWø:5Jêoº×VÏáy²ûhþé¢fäö:Dkhð2T9fn»æ6¢Ñ 5¨" R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0eb8f17000 CR3: 000000009c8b1000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 0f 84 80 0b 00 00 je 0xb86 6: e8 5b 71 c5 ff callq 0xffc57166 b: 31 ff xor %edi,%edi d: 48 89 de mov %rbx,%rsi 10: e8 e1 72 c5 ff callq 0xffc572f6 15: 48 85 db test %rbx,%rbx 18: 0f 85 d8 0b 00 00 jne 0xbf6 1e: e8 43 71 c5 ff callq 0xffc57166 23: 4c 89 e8 mov %r13,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 0f 85 31 21 00 00 jne 0x2166 35: 49 8b 5d 00 mov 0x0(%r13),%rbx 39: 31 ff xor %edi,%edi 3b: 48 c1 eb 0f shr $0xf,%rbx 3f: 83 .byte 0x83