general protection fault, probably for non-canonical address 0xdffffc0000000029: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000148-0x000000000000014f] CPU: 1 PID: 15963 Comm: syz-executor.5 Not tainted 5.10.52 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:io_sq_offload_start fs/io_uring.c:7995 [inline] RIP: 0010:io_disable_sqo_submit+0x1b1/0x230 fs/io_uring.c:8715 Code: e8 f4 01 bc ff 85 ed 0f 84 fc fe ff ff e8 77 08 bc ff 49 8d bd 48 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 64 49 8b ad 48 01 00 00 48 85 ed 0f 84 c9 fe ff ff RSP: 0018:ffff888055fc7d70 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff8880577ab000 RCX: ffffc900039fc000 RDX: 0000000000000029 RSI: ffffffff81837cb9 RDI: 0000000000000148 RBP: 0000000000000002 R08: 0000000000000000 R09: ffff8880577ab3c7 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880577ab3c0 R13: 0000000000000000 R14: ffff8880577ab048 R15: ffff8880577ab000 FS: 00007f30b112b700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000312a3b8 CR3: 000000004e0b2000 CR4: 0000000000350ee0 Call Trace: io_uring_create fs/io_uring.c:9508 [inline] io_uring_setup+0x14e0/0x2ee0 fs/io_uring.c:9536 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f30b112b108 EFLAGS: 00000202 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 0000000000466609 RDX: 0000000020ffc000 RSI: 0000000020000080 RDI: 000000000000093d RBP: 0000000020000080 R08: 0000000020000140 R09: 0000000020000140 R10: 00000000200001c0 R11: 0000000000000202 R12: 0000000020000140 R13: 0000000020ffc000 R14: 00000000200001c0 R15: 0000000020ffd000 Modules linked in: ---[ end trace 7bb765534ace9880 ]--- RIP: 0010:io_sq_offload_start fs/io_uring.c:7995 [inline] RIP: 0010:io_disable_sqo_submit+0x1b1/0x230 fs/io_uring.c:8715 Code: e8 f4 01 bc ff 85 ed 0f 84 fc fe ff ff e8 77 08 bc ff 49 8d bd 48 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 64 49 8b ad 48 01 00 00 48 85 ed 0f 84 c9 fe ff ff RSP: 0018:ffff888055fc7d70 EFLAGS: 00010212 RAX: dffffc0000000000 RBX: ffff8880577ab000 RCX: ffffc900039fc000 RDX: 0000000000000029 RSI: ffffffff81837cb9 RDI: 0000000000000148 RBP: 0000000000000002 R08: 0000000000000000 R09: ffff8880577ab3c7 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880577ab3c0 R13: 0000000000000000 R14: ffff8880577ab048 R15: ffff8880577ab000 FS: 00007f30b112b700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000312a3b8 CR3: 000000004e0b2000 CR4: 0000000000350ee0 EXT4-fs warning (device loop7): read_mmp_block:106: Error -117 while reading MMP block 0 EXT4-fs warning (device loop7): read_mmp_block:106: Error -117 while reading MMP block 0 audit: type=1326 audit(1628101663.779:81): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=15948 comm="syz-executor.3" exe="/syz-executor.3" sig=31 arch=c000003e syscall=202 compat=0 ip=0x466609 code=0x0