RDX: 000000000000dda2 RSI: 0000000000000a32 RDI: 0000000000000004 RBP: 00007f7888f371d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffecc457adf R14: 00007f7888f37300 R15: 0000000000022000 general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 0 PID: 10890 Comm: syz-executor.7 Not tainted 5.10.173 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:io_arm_poll_handler io_uring/io_uring.c:5795 [inline] RIP: 0010:__io_queue_sqe+0x69f/0xa60 io_uring/io_uring.c:7043 Code: 0f 85 24 03 00 00 48 8b 3d d6 8a da 02 ba 48 00 00 00 be 20 0a 00 00 e8 cf ce 7d ff 48 8d 78 14 49 89 c5 48 89 f8 48 c1 e8 03 <42> 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffff88804d37fb28 EFLAGS: 00010213 RAX: 0000000000000002 RBX: 1ffff11009a6ff6b RCX: 0000000000000000 RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000014 RBP: ffff88804b7e8000 R08: 0000000000000000 R09: ffffffff8509e133 R10: fffffbfff0a13c26 R11: 0000000000000001 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff88804b7e8058 R15: ffff88804b7e8048 FS: 00007f7888f37700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d622000 CR3: 000000001dd34000 CR4: 0000000000350ef0 Call Trace: io_queue_sqe io_uring/io_uring.c:7071 [inline] io_submit_state_end io_uring/io_uring.c:7262 [inline] io_submit_sqes+0x4279/0x86e0 io_uring/io_uring.c:7366 __do_sys_io_uring_enter+0x6b5/0x17b0 io_uring/io_uring.c:10083 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f788b9c1b19 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:00007f7888f37188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f788bad4f60 RCX: 00007f788b9c1b19 RDX: 000000000000dda2 RSI: 0000000000000a32 RDI: 0000000000000004 RBP: 00007f7888f371d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffecc457adf R14: 00007f7888f37300 R15: 0000000000022000 Modules linked in: ---[ end trace e3f019c8ae0a979a ]--- RIP: 0010:io_arm_poll_handler io_uring/io_uring.c:5795 [inline] RIP: 0010:__io_queue_sqe+0x69f/0xa60 io_uring/io_uring.c:7043 Code: 0f 85 24 03 00 00 48 8b 3d d6 8a da 02 ba 48 00 00 00 be 20 0a 00 00 e8 cf ce 7d ff 48 8d 78 14 49 89 c5 48 89 f8 48 c1 e8 03 <42> 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffff88804d37fb28 EFLAGS: 00010213 RAX: 0000000000000002 RBX: 1ffff11009a6ff6b RCX: 0000000000000000 RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000014 RBP: ffff88804b7e8000 R08: 0000000000000000 R09: ffffffff8509e133 R10: fffffbfff0a13c26 R11: 0000000000000001 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff88804b7e8058 R15: ffff88804b7e8048 FS: 00007f7888f37700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d622000 CR3: 000000001dd34000 CR4: 0000000000350ef0 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10894 Comm: syz-executor.5 Tainted: G D 5.10.173 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x20 mm/slab_common.c:1193 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x5b/0x360 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x360 mm/slub.c:2909 kmem_cache_zalloc include/linux/slab.h:654 [inline] alloc_buffer_head+0x20/0x110 fs/buffer.c:3336 alloc_page_buffers+0x14d/0x700 fs/buffer.c:856 create_empty_buffers+0x2c/0x640 fs/buffer.c:1561 create_page_buffers+0x1bb/0x230 fs/buffer.c:1678 __block_write_begin_int+0x1d1/0x19c0 fs/buffer.c:1990 __block_write_begin fs/buffer.c:2061 [inline] block_write_begin fs/buffer.c:2120 [inline] cont_write_begin+0x472/0x980 fs/buffer.c:2469 fat_write_begin+0x89/0x180 fs/fat/inode.c:235 generic_perform_write+0x20a/0x4f0 mm/filemap.c:3333 __generic_file_write_iter+0x2cd/0x5d0 mm/filemap.c:3430 generic_file_write_iter+0xdb/0x230 mm/filemap.c:3494 call_write_iter include/linux/fs.h:1918 [inline] do_iter_readv_writev+0x476/0x750 fs/read_write.c:740 do_iter_write+0x191/0x670 fs/read_write.c:866 vfs_iter_write+0x70/0xa0 fs/read_write.c:907 iter_file_splice_write+0x762/0xc30 fs/splice.c:686 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0x10f/0x170 fs/splice.c:933 splice_direct_to_actor+0x387/0x980 fs/splice.c:888 do_splice_direct+0x1c4/0x290 fs/splice.c:976 do_sendfile+0x553/0x1090 fs/read_write.c:1257 __do_sys_sendfile64 fs/read_write.c:1318 [inline] __se_sys_sendfile64 fs/read_write.c:1304 [inline] __x64_sys_sendfile64+0x1d1/0x210 fs/read_write.c:1304 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f762e568b19 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:00007f762bade188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f762e67bf60 RCX: 00007f762e568b19 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004 RBP: 00007f762bade1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000100000001 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffd434cb7ff R14: 00007f762bade300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 10905 Comm: syz-executor.5 Tainted: G D 5.10.173 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x20 mm/slab_common.c:1193 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x5b/0x360 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x360 mm/slub.c:2909 kmem_cache_zalloc include/linux/slab.h:654 [inline] alloc_buffer_head+0x20/0x110 fs/buffer.c:3336 alloc_page_buffers+0x14d/0x700 fs/buffer.c:856 create_empty_buffers+0x2c/0x640 fs/buffer.c:1561 create_page_buffers+0x1bb/0x230 fs/buffer.c:1678 __block_write_begin_int+0x1d1/0x19c0 fs/buffer.c:1990 __block_write_begin fs/buffer.c:2061 [inline] block_write_begin fs/buffer.c:2120 [inline] cont_write_begin+0x472/0x980 fs/buffer.c:2469 fat_write_begin+0x89/0x180 fs/fat/inode.c:235 generic_perform_write+0x20a/0x4f0 mm/filemap.c:3333 __generic_file_write_iter+0x2cd/0x5d0 mm/filemap.c:3430 generic_file_write_iter+0xdb/0x230 mm/filemap.c:3494 call_write_iter include/linux/fs.h:1918 [inline] do_iter_readv_writev+0x476/0x750 fs/read_write.c:740 do_iter_write+0x191/0x670 fs/read_write.c:866 vfs_iter_write+0x70/0xa0 fs/read_write.c:907 iter_file_splice_write+0x762/0xc30 fs/splice.c:686 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0x10f/0x170 fs/splice.c:933 splice_direct_to_actor+0x387/0x980 fs/splice.c:888 do_splice_direct+0x1c4/0x290 fs/splice.c:976 do_sendfile+0x553/0x1090 fs/read_write.c:1257 __do_sys_sendfile64 fs/read_write.c:1318 [inline] __se_sys_sendfile64 fs/read_write.c:1304 [inline] __x64_sys_sendfile64+0x1d1/0x210 fs/read_write.c:1304 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f762e568b19 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:00007f762bade188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f762e67bf60 RCX: 00007f762e568b19 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004 RBP: 00007f762bade1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000100000001 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffd434cb7ff R14: 00007f762bade300 R15: 0000000000022000 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 0 PID: 10915 Comm: syz-executor.5 Tainted: G D 5.10.173 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x20 mm/slab_common.c:1193 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x5b/0x360 mm/slub.c:2909 mempool_alloc+0x148/0x360 mm/mempool.c:391 bio_alloc_bioset+0x36e/0x600 block/bio.c:486 bio_alloc include/linux/bio.h:402 [inline] submit_bh_wbc.constprop.0+0x1b8/0x780 fs/buffer.c:3026 submit_bh fs/buffer.c:3060 [inline] __bread_slow fs/buffer.c:1209 [inline] __bread_gfp+0x166/0x3a0 fs/buffer.c:1402 sb_bread include/linux/buffer_head.h:335 [inline] fat12_ent_bread+0x144/0x420 fs/fat/fatent.c:76 fat_ent_read_block fs/fat/fatent.c:444 [inline] fat_alloc_clusters+0x571/0xf30 fs/fat/fatent.c:492 fat_add_cluster+0x6d/0x100 fs/fat/inode.c:108 __fat_get_block fs/fat/inode.c:155 [inline] fat_get_block+0x5b3/0x940 fs/fat/inode.c:190 __block_write_begin_int+0x3d1/0x19c0 fs/buffer.c:2011 __block_write_begin fs/buffer.c:2061 [inline] block_write_begin fs/buffer.c:2120 [inline] cont_write_begin+0x472/0x980 fs/buffer.c:2469 fat_write_begin+0x89/0x180 fs/fat/inode.c:235 generic_perform_write+0x20a/0x4f0 mm/filemap.c:3333 __generic_file_write_iter+0x2cd/0x5d0 mm/filemap.c:3430 generic_file_write_iter+0xdb/0x230 mm/filemap.c:3494 call_write_iter include/linux/fs.h:1918 [inline] do_iter_readv_writev+0x476/0x750 fs/read_write.c:740 do_iter_write+0x191/0x670 fs/read_write.c:866 vfs_iter_write+0x70/0xa0 fs/read_write.c:907 iter_file_splice_write+0x762/0xc30 fs/splice.c:686 do_splice_from fs/splice.c:764 [inline] direct_splice_actor+0x10f/0x170 fs/splice.c:933 splice_direct_to_actor+0x387/0x980 fs/splice.c:888 do_splice_direct+0x1c4/0x290 fs/splice.c:976 do_sendfile+0x553/0x1090 fs/read_write.c:1257 __do_sys_sendfile64 fs/read_write.c:1318 [inline] __se_sys_sendfile64 fs/read_write.c:1304 [inline] __x64_sys_sendfile64+0x1d1/0x210 fs/read_write.c:1304 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f762e568b19 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:00007f762bade188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f762e67bf60 RCX: 00007f762e568b19 RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000004 RBP: 00007f762bade1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000100000001 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffd434cb7ff R14: 00007f762bade300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 0f 85 24 03 00 00 jne 0x32a 6: 48 8b 3d d6 8a da 02 mov 0x2da8ad6(%rip),%rdi # 0x2da8ae3 d: ba 48 00 00 00 mov $0x48,%edx 12: be 20 0a 00 00 mov $0xa20,%esi 17: e8 cf ce 7d ff callq 0xff7dceeb 1c: 48 8d 78 14 lea 0x14(%rax),%rdi 20: 49 89 c5 mov %rax,%r13 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 14 20 movzbl (%rax,%r12,1),%edx <-- trapping instruction 2f: 48 89 f8 mov %rdi,%rax 32: 83 e0 07 and $0x7,%eax 35: 83 c0 03 add $0x3,%eax 38: 38 d0 cmp %dl,%al 3a: 7c 08 jl 0x44 3c: 84 d2 test %dl,%dl 3e: 0f .byte 0xf 3f: 85 .byte 0x85