WARNING: suspicious RCU usage 5.12.0-rc4-syzkaller #0 Not tainted ----------------------------- kernel/sched/core.c:8294 Illegal context switch in RCU-sched read-side critical section! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 0 no locks held by syz-executor.3/14020. stack backtrace: CPU: 1 PID: 14020 Comm: syz-executor.3 Not tainted 5.12.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 ___might_sleep+0x266/0x2c0 kernel/sched/core.c:8294 __inode_security_revalidate security/selinux/hooks.c:259 [inline] inode_security+0x5d/0x130 security/selinux/hooks.c:296 selinux_file_permission+0x140/0x520 security/selinux/hooks.c:3641 security_file_permission+0x56/0x560 security/security.c:1461 rw_verify_area+0x115/0x350 fs/read_write.c:400 vfs_write+0x177/0xa30 fs/read_write.c:596 ksys_pwrite64 fs/read_write.c:712 [inline] __do_sys_pwrite64 fs/read_write.c:722 [inline] __se_sys_pwrite64 fs/read_write.c:719 [inline] __x64_sys_pwrite64+0x1fd/0x250 fs/read_write.c:719 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4195f7 Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b RSP: 002b:00007fa5c9cdbe70 EFLAGS: 00000293 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00000000004afb60 RCX: 00000000004195f7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 00000000000001d4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 R13: 0000000000000005 R14: 0000000020002ba0 R15: 00000000000001bc loop3: detected capacity change from 0 to 1 ldm_validate_privheads(): Disk read failed. loop3: p2 < > p4 loop3: partition table partially beyond EOD, truncated loop3: p2 size 2 extends beyond EOD, truncated loop3: p4 size 2097152 extends beyond EOD, truncated