BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 25903 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 might_alloc include/linux/sched/mm.h:306 [inline]
 bdev_getblk+0x8e/0x610 fs/buffer.c:1425
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>
syz-executor.4: attempt to access beyond end of device
loop4: rw=0, sector=3245518, nr_sectors = 1 limit=128
Buffer I/O error on dev loop4, logical block 3245518, async page read
syz-executor.4: attempt to access beyond end of device
loop4: rw=0, sector=8769403, nr_sectors = 1 limit=128
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 25903 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 might_alloc include/linux/sched/mm.h:306 [inline]
 bdev_getblk+0x8e/0x610 fs/buffer.c:1425
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>
BUG: sleeping function called from invalid context at include/linux/pagemap.h:1046
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 25903 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 folio_lock+0x29/0x1a0 include/linux/pagemap.h:1046
 __filemap_get_folio+0xa3/0xbc0 mm/filemap.c:1865
 grow_dev_folio fs/buffer.c:1042 [inline]
 grow_buffers fs/buffer.c:1108 [inline]
 __getblk_slow fs/buffer.c:1134 [inline]
 bdev_getblk+0x234/0x610 fs/buffer.c:1429
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 25903 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 might_alloc include/linux/sched/mm.h:306 [inline]
 bdev_getblk+0x8e/0x610 fs/buffer.c:1425
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 25903 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 might_alloc include/linux/sched/mm.h:306 [inline]
 bdev_getblk+0x8e/0x610 fs/buffer.c:1425
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 25903 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 might_alloc include/linux/sched/mm.h:306 [inline]
 bdev_getblk+0x8e/0x610 fs/buffer.c:1425
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 25903 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 might_alloc include/linux/sched/mm.h:306 [inline]
 bdev_getblk+0x8e/0x610 fs/buffer.c:1425
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 25903 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 might_alloc include/linux/sched/mm.h:306 [inline]
 bdev_getblk+0x8e/0x610 fs/buffer.c:1425
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 PID: 25903 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 might_alloc include/linux/sched/mm.h:306 [inline]
 bdev_getblk+0x8e/0x610 fs/buffer.c:1425
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 25903, name: syz-executor.4
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz-executor.4/25903:
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:814 [inline]
 #0: ffff88803d5446d0 (&type->i_mutex_dir_key#32){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1709
 #1: ffffffff8e40e1d8 (pointers_lock#3){.+.+}-{2:2}, at: get_block+0x165/0x1710 fs/sysv/itree.c:222
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 PID: 25903 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 __might_resched+0x5d3/0x780 kernel/sched/core.c:10176
 might_alloc include/linux/sched/mm.h:306 [inline]
 bdev_getblk+0x8e/0x610 fs/buffer.c:1425
 __bread_gfp+0xac/0x430 fs/buffer.c:1474
 sb_bread include/linux/buffer_head.h:321 [inline]
 get_branch+0x2af/0x660 fs/sysv/itree.c:105
 get_block+0x188/0x1710 fs/sysv/itree.c:223
 block_read_full_folio+0x426/0xe20 fs/buffer.c:2382
 filemap_read_folio+0x1a0/0x790 mm/filemap.c:2324
 do_read_cache_folio+0x134/0x820 mm/filemap.c:3703
 do_read_cache_page+0x30/0x200 mm/filemap.c:3769
 read_mapping_page include/linux/pagemap.h:888 [inline]
 dir_get_page fs/sysv/dir.c:64 [inline]
 sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
 sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
 sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1693
 lookup_slow+0x53/0x70 fs/namei.c:1710
 walk_component+0x2e1/0x410 fs/namei.c:2005
 lookup_last fs/namei.c:2462 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2486
 filename_lookup+0x255/0x610 fs/namei.c:2515
 user_path_at_empty+0x42/0x60 fs/namei.c:2924
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3689 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6150a7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f61518be0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6150babf80 RCX: 00007f6150a7dda9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f6150aca47a R08: 0000000020000140 R09: 0000000000000000
R10: 0000000000212012 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6150babf80 R15: 00007fff3bb2ecc8
 </TASK>